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User`s Manual The 3B Series Signal Conditioning I/O Subsystem

1. 14 15 26 NC BOTTOM VIEW GROUNO MATING CONNECTOR AMP P N 499958 6 OR EQUIVALENT 1312 Figure 3 4 4 Voltage Connector Figure 3 4 6 is a drill template that can be removed from the User s Manual and used for mounting any 5 x 4 5 interface board see page following 3 7 Each board can be mounted on the back of the AC1330 Rack Mount Kit the side of a cabinet NEMA box or any other convenient surface The AC1315 a 2 foot 26 pin cable that plugs into one of the system connectors and plugs into a 26 pin connector on the interface board can be used with any interface board The cable s from the interface board to the user equipment are also available as separate accessories 3 5 KC DRILL AND TAP FOR 6 32 SCREW FOUR LOCATIONS 7 62 Figure 3 4 5 Interface Boards Surface Mount Dimensions MODULE INSTALLATION Before modules are installed the proper jumper configuration must be chosen and the ranging card AC1310 must be installed if used Alignment marks are provided on the inside of the case skirt to aid the installation of the AC1310 When ready the modules are plugged into the appropriate slot on the backplane Each module and backplane is keyed to assure each module is plugged in properly Each backplane location has two plastic clips that help align and retain the modules when they are plugged in If a more rigid holddown is desired a rack mount AC
2. Filter Capacitor C Figure 2 1 7 2 3B18 Custom Ranging 2 17 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs 3B18 01 3B18 02 Outputs Maximum Current for Input Overload Accuracy Nonlinearity Stability vs Ambient Temperature Voltage Output Zero Span Current Output w r t Voltage Output Zero Span Excitation Voltage Bridge Excitation User Selectable Excitation Tolerance Bridge Resistance Range Vexc 10 0V Bridge Resistance Range Vexc 3 33V Common Mode Voltage Input to Output Common Mode Rejection 50Hz or 60Hz 1 Source Unbalance Differential Input Protection Voltage Output Protection Current Output Protection Zero and Span Adjustment Range Bandwidth Response Time to 9095 Span Input Resistance Input Bias Current Power Supplies x 15V Input Supplies Range Rated Operauon Supply Rejection Supply Current 24V Loop Supply Range Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Conforms to MIL Spec 202 RFI Susceptibility NOTES 3B18 30mV at 3mV V Sensitivity O0mV at 3mV V Sensitivity 10V t 2 4 20mA or 0 20mA a 010 8500 3lmA 0 1 span 0 01 z34VPC RTI 0 0025 reading C 0 0025 span C 0 0025 reading C 0 0015 10V 3 33V 2 3000 to 1000 to 10V 100dB 130V rms Co
3. 0 003096 reading C 0 0025 span C 0 002596 reading C 10V 3000 to 60dB 130V rms cont Continuous Short to Ground 130V rms cont 5 of span 0 2sec 100 0 3nA 0 24 V rms at 10Hz bandwidth 50 rms in 100kHz bandwidth 3Hz 12 7V to 16 5 0 0196 span V 45mA l mA 12V to 30V 0 000296 span V 27mA at FS 3 150 x 0 775 x 3 395 25 to 85 55 85 0 to 95 t 60 C noncondensing 0 5 span error 5W 400MH2z a Fora0 20mA range atypical minimum output current is 10 2 Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does not include sensor or signal source error ncludes excitation circuitry wide range of zero suppression and custom calibration may accomplished with a custom ranging card AC1310 24V dc power is only needed for driving the current output at up to 8500 If only voltage output is used or a current oulput toad of 4002 or less isdesired 15V isall that is required Specifications subject to change without notice ORDERING INFORMATION Input Ranges Externally Programmable 3mV N Model Number 3B16 00 3B16 01 6 35V 6 35V PB A Figure 2 1 5 3 3B16 Zero Suppression Resistors 10 to avoid taking excessive current from the voltage reference or self heating in the resistors Using 10kQ as the total value R
4. Gain Resistor GainResistor R Open Open GAIN ZERO GAIN AND ZERO SUPPRESSION AND SUPPRESSION LINEARIZATION Gain Resistor Open Zero Suppression Resistor Open Linearization Resistor Zero Suppression Resistor For copper RTDs or for platinum or nickel RTD applications which do not require internal linearization the following custom ranging procedure applies 1 2 Output voltages at the endpoints of the span may be anywhere in the range of 10 to 10V Ranging components are computed from Gain Setung Resistor 3B34 00 3B34 N 00 3B34 C 00 D500 Zero Suppression Resistor R34 Rz Where Rz Resistanceofthe RTD atthe tempera ture that is to give 0V Vrs Positive full scale output voltage desired Changein RTD resistance from Rz to the full scale temperature The fact that Rz is set to the zero volt output point does not mean that negative outputs will not be meaningful it just provides the simplest relation Once R and Rz are determined the output voltage at any RTD temperature can be found given the RTD sresistance at that tem perature Rgrp from the following relation for the 3B34 00 or the 3B34 N 00 Vg RRTD Rz X 0 25mA X Gy For the 3B34 C 00 the relation 1s Vo Retp Ta Rz x 1 0mA Gy 20k In both cases Gy 400 a 1 These relations are the general transfer functions for the mo
5. EGRE BERS BES 4 1 4 11 Backplane Jumper 4 1 4 1 1 Surge Withstand Capability 4 1 4 1 2 15 24V Loop Power Commons 4 2 42 Interface Boards s e s oa GS 4 2 42 1 KILInterface Boatds 4 2 4 2 2 to RTI MACSYM Cable Assemblies 4 3 4 2 3 Universal Interface Boards 4 5 4 3 Current Output 5 4 6 4 5 1 Power 4 6 4 3 2 Current Output Load 4 6 TABLE OF CONTENTS 4 4 Module cess ce tees on week 4 6 1 Mod le RIDES TEE TTL 4 6 Bae 2 Mod le Sci ACN e 4 7 4 4 3 Custom Ranging Zero Suppression ssccsssssssssscssscssscssccccescccscccccssccccsccssssccesssssses 4 7 4 4 4 Modul s Color 4 7 4 4 5 Module onstr cltlOnh 22 5 mei eccle vets con voee deco rado ri EI 4 7 4 5 Individual Module Mounting Kit 4 7 CHAPTERS SCHEMA 5 5 1 APPENDICES te ADM I A 1 A C T TUR A 1 Custom Rangin
6. typical 25 C and 15V 24V dc power Model inputs 2 or 3 Wire Outputs Maximum Current Output Range Accuracy Nonlinearity Stability vs Ambient Temperature Voltage Output Zero Span Current Output w r t Voltage Output Zero Span Common Mode Voltage input to Output Common Mode Rejection SOHz or 60Hz Source Unbalance Normal Mode Rejection 50Hz or 60Hz Sensor Excitation Current 1000 Pt 1200 Ni 100 Cu Lead Resistance Effect 1000 1200 Ni 10f1 Cu Differential Ioput Protection Voltage Output Protection Current Output Prntectinn Zero and Span Adjustment Range Response T ime tn 90 Span Input Resistance Input Bias Current Input Noise Output Noise Bandwidth Power Supplies x 15V input Supplies Range Rated Operation Supply Rejectinn Supply Current 24V Loop Supply Range Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Confnrms n MIL Spec 202 RFI Suscepuibility NOTES 3B34 10001 Platinum RTD 2 3 4 wire a 0 00385 100 Copper RTD 1200 Nickel RTD 2 3 or4 Wire 10V 5 4 20mA or 0 20mA a 0108500 0 31mA 0 1 span 0 05 span 0 02 0 0025 reading C 0 002596 lt 0 0025 reading C 1500 pk max 160dB 60dB 0 25mA 1 0 02 C N 0 2 220V rms cont Continuous Short to Ground 130V rms con
7. 10 6 35V 6 35V 3 175 3 175V A P B 7 R2 3B12 3B32 Figure 2 1 2 3 3B12 and 3B32 Zero Suppression Resistors LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed For the 3B12 the maximum input at either the HI or LO input terminal 15 6 6V with respect to output system common which implies a 66mA current through the 1002 resistor The supplied resistor is 1 8W which means a higher watt resistor should be used if this much current is required The maximum input current for the 3B12 is 30m The range of both module s voltage output adjustment is at least 0 5V at the module output and can therefore correct any input offset error of less than 0 5V Gain or SmA Gain with the 1000 external resistor If possible the resistors used should be 1 tolerance 10ppm See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 1 3 MODEL 3B13 FEATURES Accepts AD590 AC2626 Input FUNCTIONAL DESCRIPTION The 3B13 is designed to interface with Analog Devices AD590 temperature transducer The 3B13 is a nonisolated device that accommodates the AD590 temperature measurement range of 55 C to 130 C Figure 2 1 3 1 shows a functional diagram for model 3B13 A current sensing resistor supplied with each module is connected to screw terminals 2 and 3 Sen
8. 1325 3B01 3B03 AC1320 AC1325 AC1321 AC1 323 AC1325 AC1320 AC1325 3B01 3B03 3B01 3B03 3B01 3B03 Used With 1321 1323 AC1325 3B01 3B03 1320 1325 AC1320 AC1325 1321 1323 AC1325 AC1325 AC1325 AC1325 AC1325 3B01 03 Used With 3B12 3B32 3B13 Any 3B Module Any 3B Module Custom Function with 3B Series Custom Function with 3B Series Used With RTI 1225 RTI 1226 RTI 1260 RTI 1262 RTI 1230 1232 RTI 1232 RTI 1200 RTI 1250 RTI 1260 03 AIM100 RTI 1240 RTI 1241 RTI 1242 RTI 1243 RTI 711 RTI 724 RTI 732 RTI 800 RTI 815 UNIVERSAL ADAPTER BOARDS The universal adapter boards are intended to provide connections to any external equipment The AC1324 has a 26 pin connector which accepts the high level voltage I from a Series backplane the 1315 might be used for this purpose User connections are then made to screw terminals on the AC1324 which allows the 3B Series to interface to any equipment with just a screw ADIP N Description AC1324 AC1325 driver The AC1325 has two 26 pin connectors that can interface with two 3B Series backplanes and has 4 patterns of holes that accommodate flat cable connectors of up to 50 pins each The AC1325 mates with the appropriate connectors required to in terface with the users equipment The AC1325 will accept the 1316 1319 board mount connectors or any standard flat cable connector with
9. RANGING LIMITS The range carrier can be used effectively to create a very wide range of special transfer functions but there are practical limits which must be observed The limits are of three fundamental types a Module input restrictions Independent of the amount of gain or zero suppression taken the maximum voltage for normal linear operation at either the HI or LO input terminal for the nonisolated units is 3B10 3B12 3B13 6 6V with respect to output system common 3B16 12V with respect to output system common 3B17 10V peak with respect to output system common 3B18 withrespect to output system common For isolated units the maximum differential voltage input is 3B30 3B37 3B47 V differential input 3B31 20V differential input 3B32 2V differential input 3B40 2 5V differential input 3B41 25V differential input The 3B17 requires no zero or gain setting resistors For isolated ac input modules the maximum ac voltage input is 3B42 1V rms 3B43 50 V rms 3B44 550V rms Model 3B11 has a 10 x input attenuator that affects its restriction For this product the sum of common mode voltage plus one tenth the normal mode voltage must be less than 6 6V The RTD models 3 14 3B15 3B34 will work for RTD value less than 10 2 5 for Copper RTDs Frequency Input Models 3B45 and 3B46 offer input protection up to 220V and will operate normally up to that value The 3B46 can accept
10. any capacitor across the entire differential coil must be removed CUSTOM CONFIGURATION powerful custom ranging capability is provided with a plug on ranging card AC1310 If a special excitation voltage or frequency is desired it can be provided by ordering the externally programmable version 3B17 00 and the AC1310 which houses the user supplied resistors that determine the excitation voltage and frequency of the new range If possible the excitation voltage resistor should be 196 tolerance 10 ppm The frequency resistors need only be 100 ppm See Appendix for a detailed discussion of limits of the ranging card The excitation ranging flexibility and the wide calibration capability available with a standard 3B17 together provide the flexibility needed for the complete signal conditioning solution to virtually any LVDT requirement The bandwidth of all standard 3B17s is 100Hz factory configured 3B17 CUS TOM can have a bandwidth that varies up to 1 10 the excitation frequency special range can also be factory configured with the excitation voltage settable between 1V and 5V and the excitation frequency can vary between 1kHz and 10kHz Consult the factory for details EXCITATION VOLTAGE SETTING RELATION With the AC1310 the excitation voltage amplitude is set by RI which is determined from the following relation RI 10 rms 7 rms V rms is the desired rms amplitude of the oscillation and it can be selected f
11. cd 6 lt 2 o lt 0 lt 0 155 D ENS VES SNS 3 3 O SNS E i peil Irs 8 8 lt 8 lt 8 itt dp 9 2229 pi 1 SNS SNS SNS SNS Oe 0 14 2 4 lt 2 14 ee EL eui zase zose jer FH ae 21 T 2 T 21 2 24 5 8 28 lt pir m J5 J6 J8 27 34 1O 43 28 38 A lt He 13 EXPANSION RTI i262 OUTPUT CHANNEL 30 lt gt 14 BACKPLANE 22 js j CHANNEL Figure 5 4 AC1320 Schematic 2 7 s 13 4 1 19 6 BACKPLANE 23 7 CHANNEL 6 9 8 10 10 14 12 LE 205 14 245 25 oT SNS LO T 00 00 N f 602 Se as OO AWN p 17 19 l S FT gt BACKPLANE 3 Oooo pes CHANNEL GN 2 4 dc _ 4 Det T ven lo oon 1 1 2 14 E jc 82216 ee ae 20 ll Hl 2m mn a E TID 1230 31 4 6 9 25 4 SNS LO INPUT V7 1 i ae 5 SNS 545 lt I SNS S SNS lt 3 SNS 8 2 3 I 1 11 11 41 17 5 18 i2 12 5 12 21 gt 2 SNS 2 SNS 2 SNS 2 SNS 2 SNS 22 lt 6 3 3 15 5 3 15 23 5 SNS 3 sns 5 3 SN
12. cold junction sensor is supplied on each channel to accommodate thermocouple modules Each channel has two screw terminals for the output connections for the 4 20mA output Two 26 pin system connectors provide high level voltage I O for all channels The 3B Series Subsystem offers high density packaging to conserve mounting space and can be easily tailored to fit the user s needs All modules feature a universal pin out which assures interchangeability The plug in design allows easy reconfiguration 17 400 441 96 E a 6 35 TYP PIN IS o _ 1 THRU STANDOFF ACCEPTS 6 SCREW 4 PLACES THAU STANDOFF ACCEPTS 6 SCREW 4 PLACES 3B02 8 Channel Backplane 3B03 4 Channel Backplane Figure 2 3 1 Backplane Outline Dimensions Dimensions shown in inches and mm 1 7 9 _ 7 5 ae ro EN 16 E 2 800 1198 12 4 e 0 250 6 35 TYP d i a a z D A BACKPLANE SPECIFICATIONS 3B03 Size with modules 17 400 x 5 200 x 4 373 11 000 x 5 200 x 4 373 7 800 x 5 200 x 4 373 Model 3B01 3B02 Channels 16 8 Power Supply Options External Power 15 Requirements 24V AC Power Supply 100 115 220 240 DC Power Supply 24V Cold Junction Sensor ProvidedoneachChannel Power Indicator LEDs indicate 15V and 24V powerapplied Physica Fuse 220V Fuse at 500mA Smm x 20mm NOTES Actual Power Supply re
13. 0 775 1 395 Enviromental Teamnporature Rango Rated Storage Torpsruture Relative Humidity RFI Suscaptib ity NOTES spen is 20 Vole 1 0 2 A range cipium 1044 1 5 m V rms 150m 25mV V t10V 5mA end 4 203 ar 0 20mA RL 45500 40mA 10 14 Span 40 054 Span 0 005 Spen C 0 01 par C 10 002594 Span C 10 0025 Raading C ZV rms 10V ems 12 5 lkHz 10kHs Up to mA rms mm n 54 130V rms Coctenous Continaous Short to Ground 130V rms Continous 1254 of span minimum 0 4 24 min lda Q 14 mn 3 28kHs 0 37 25 mm 10k 100Hs Sens 100M0 10nA 13 to 18V 0 03 Span V ti65SmA max plus excitation current 13 5V to 30V 0 001 Span V Z7mA at 73 25 C to 85 5 C wo 85 0 to 95 60 C Nancondenaing 0 5 Span Error SW 400Miis 2 Accuracy inciudes combined effects of and Seestity 5 Conan be accomplished with canam raging car ACT310 6 Bandwidth can be for up 1 10 fqeency vien onjeriag 30820 7 24V dc power a only seeded far diving ammm aput up Lf aniy umpu of 4000 er lees is 3177 ip Specificedous subject to change vites amiss
14. 0 SOmV rms 0 100mV rms 0 10V 4 20mA 0 20mA 3B42 0 10V rms 0 10V 4 20mA 0 20mA 3B43 0 150V rms 0 250V rms 0 10V 4 20mA 0 20mA 3B44 Frequency 0 25Hz 0 300Hz 0 10V 4 20mA 0 20mA 3B45 Frequency 0 1500Hz 0 3000Hz 0 25 2 0 10V 4 20mA 0 20mA 3B46 Table 1 3 1 Module Selection Table 1 2 The modules are available in several factory calibrated input ranges Each input module includes separate screwdriver adjustable zero and span potentiometers for both the voltage output and the current output which can be used for fine calibration within the chosen range The voltage and current adjustments are independent and noninteractive which allows for precise calibration of both outputs Each output module has two adjustable zero and span potentiometers for fine calibration of the output current Each potentiometer has an adjustment range of 5 span 14 WIDE ZERO SUPPRESSION CAPABILITY A wide zero suppression capability and easy field recalibration are available with a unique plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the externally programmable version of the desired module 1 3B32 00 and the plug on ranging card AC1310 This card houses user supplied resistors that determine the zero and span of the desired range The RTD modules accept an additional resistor that is used for linearization of the input signal while the thermocouple module uses an additional resistor to set the
15. 02 0953000 A Schematic Diag Manifold 4 Channel Backnlane 02 0952900 A Schematic Diag Manifold 8 channel backplane APPROVED PRODUCT REVISION REPORT foe OR ADDRESS CONTACT CHANGE REPORT ste SENDER Forward original and one 1 copy with updeted Additional forms may be FORWARD TO drawings or other appropriete change information requested by writing to the to the ettention of the Approvals Division Original ettention of the FACTORY MUTUAL RESEARCH wil be returned showing course of action taken Factory Mutual Stockroom 1 1 Cine Turnpike Ox Norwood MA 02062 Please type below your Company Name Address City State amp Zip Code Attention R T Burke 1 Analog Devices Inc May 20 1986 P 0 Box 280 FOR Norwood MA 02062 TA Engineer L J MODEL S PRODUCT S _ 210 IS A FACTORY MUTUAL LISTED MODEL TYPE NO REVISED BY INDICA CATE ATION S YarrecreD S THIS CHANGE IF YES EXPLAIN USE SEPARATE SHEET IF REQUIRED Rives ay HAS THE MANUFACTURING LOCATION LISTING ADDRESS TELEPHONE NUMBER OR CONTACT PERSON CHANGED IF YES EXPLAIN BELOW Cives NO REVISION DETAILS DWG NO AF n d NEW DWG NO Analog Devices requests additional modules to be dded to the 3801 3B02 and 3 03 signal conditioning subsystem approved nonincendive as described in FM J I OK5AB AX There are ten new plug L modules and two new plug
16. 100 to 100 3B14 01 3B15 01 100 3B14 02 3B15 02 Oto 200 3B14 03 3B15 03 600 3B14 04 3B15 04 oe Tm Two Figure 2 1 4 2 RTD Values Needed for Ranging Models 3 14 and 3 15 GAIN ZERO GAIN SELECTION GAIN AND ZERO SUPPRESSION AND ONLY SUPPRESSION LINEARIZATION Gain Resistor Gain Resistor Gain Resistor gt Jumper Zero Suppression Resistor Zero Suppression Resistor Open Open Open Open Linearization Resistor Zaro Suppression for 3814 Uses Aya Figure 2 1 4 3 3B14 and 3 15 Custom Ranging 2 Any type of RTD can be used provided that its resistance does not exceed 10kQ in the measurement range of interest 3 Ranging components are computed from Gain Setting Resistor 4000 Vee FS Ars x 20k Zero Suppression Resistor 3 15 Rz 3B14 Rz Where Rz Resitanceof the RTD at the tempera ture that is to give 0V Vps Positive full scale output voltage desired ARps Changein RTD resistance from to the full scale temperature The fact that Rz is set to the zero volt output point does not mean that negative outputs will not be meaningful it just provides the simplest relation Once R and are determined the output voltage at any RTD temperature can be found given the RTD s resistance at that temperature Rgrp from the following relation Vo Retp
17. 7 25 25 F4 SNS e 2 UNE NEUTRAL GND KI 10 EXC GUT CH 0 CH i CH 2 THRU 6 CH 7 Figure 5 2 3B02 Schematic 6 8 CHO VOLTAGE Out WOLTAGE OUT IN 11 Pi v gt jy t Ji J3 J i LOOP our gt t boone OUT gt 1B voor OUT gt 0O 0e Dur LOOP AET RET SELO roor att 1 o LOOP a T Tat 7 5 LOOP V 5 LOOP foh 231 EUS a gus 159 PWR 9 T 11 i 2 2 ie 12 Wi Wa O 0 pe 14 14 14 OUT vouf LUNES 320 2 3 Sh COM EXC H1 1 2 L 9 EXC 9 SHS CGUT 0 Figure 5 3 3B03 Schematic LOOR y LOOP ae RERUMS di Raa Tr poro cecus 16 1 2 945 24 lt Mt MILAR TO 923 24 A T633 LINE NEUTRAL OND RTI 1225 6 INPUT CHANNEL RTI 1225 OUTPUT CHANNEL 22 SNS LO ET 29 ee ti ERE PEE 2 9 0 lt DEM 12 14 38 522200 15 lt lt MESE Au 232 1 W2 2 J4 1260 INPUT CHANNEL 2 lt 1 5 2 7 3 4 13 E E ES Dc cut d D e Bg e pq eec 5 D ep __ OM RN REL m num
18. REQUIRED TO ECO THIS DRAWING ptt tol LR urb La mH Factory Mutual approval is based upon the following Ca installation requirements of the Series Subsystem Protection from electrical shock of accessable live parts Connectors Pl amp P2 TBI T81 TB2I 5 E in too secured enclosure Input modules ODD NUMBERS ONLY de DC Power Protection of intemal circuits fram contact with x 1 S 1 2 t gt o 225 Loop V up T0 30V 6 external hazardous voltage wiring in the sam enclosure c i C La 300 mH 3 BOI Loop com Con formancx to the requircoments of the National C 1 Electrica Code 15V up to 0 8A 15 on The markings identified provide a convenient way to assess 3B19 and 3839 0 8A the compatibility of different equipment with respect output modules 182 2 Vmax 30 Volts to nonincendive field circuits such as the JU Series Imax 30 mA EVEN NUMBERS ONLY The criteria for the comparison are that the voltage Li 0 Vmax and current Imex which the loud device can receive Ci 0 must be equal to or greater than the maximum open circuit o voltage Voc and maximum short circuit current Ise p which can be delivered by the sture device In addition Input Terminals LO GND he maximum capacitance Ci and inductance Li of the and the capacitance and
19. x 0 25mA x Gy where Gy 2080 1 l This relation is the general transfer function for the modules when linearization is not used LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The maximum RTD value that can be used with these modules 15 10 The range of the module s voltage output adjustment is at least 0 5V at the module output and can therefore correct any error less than 0 5V Gain If possible the ranging resistors used should be 1 tolerance 10 while the linearization resistor be a 50ppm part See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 12 2 1 5 MODEL 3B16 FEATURES Accepts Strain Gage Input Provides Bridge Excitation FUNCTIONAL DESCRIPTION The 3B16 is designed to accept inputs from full four arm bridge strain gage type transducers on the input screw termi nals The 3B16 provides a constant 10V excitation and can be used with 3000 to 10000 strain gage bridges The module has a fixed 3Hz bandwidth to eliminate high frequency noise Figure 2 1 5 1 shows a functional diagram for the model 3B16 A constant bridge excitation voltage of 10V is provided on screw terminals and 4 Input protection of up to 130V for the input and excitation circuitry is provided The signal is then amplified and filtered to give the high level v
20. 0 016mA or the voltage measured across Rj 5V 4mV If a 0 20mA output is desired for 10V output adjust Iz for Iour 0 020mA in step 2 and for 20mA 0 020mA in step 3 A typical minimum output current is 104A with 0 20mA operation If the current output is to be proportional to a 10V to 10V output instead of a 0 to 10V output Iz should be adjusted for a Full Scale input in step 2 CUSTOM CALIBRATION A powerful custom ranging capability is provided with a plug on ranging card AC1310 If a special gain is desired it can be provided by ordering the externally programmable version of the desired module and the AC1310 which houses Output Protection Figure 2 1 11 1 3B40 and 3B41 Functional Block Diagram user supplied resistors that determine the zero and span of the new range Special ranges can also be factory configured Consult the factory for details The basic transfer function of both the 3B40 and 3B41 is Vo Gx Vm Vz Where Vo Output Voltage G Gain Vin Input Voltage Vz ZeroSuppression Voltage GAIN SETTING RELATION With the AC1310 the gain is set which is determined from the following relations 3B40 3B41 _ 400k _ 40 Bi G 0 4 Gain G is a ratio of the change of output to the input change that produced it Model 3B41 is a 3B40 with a 10x normal mode input attenuator The attenuation is done before the zero
21. 1A wide range of zero suppression and custom calibration may be accomplished with a custom ranging card 1310 4 24V dc power is only needed for driving the current output at up 10 85001 lf only voltage is used or a current output load of 4000 or less is desired 15 is all thal is required Specifications same as 38 32 Specifications subjeci to change without notice ORDERING INFORMATION Model Number Model Number 3B12 Li Input Ranges Isolated Nonisolated Externally Programmable 3B32 00 3B12 00 4 20mA 3B32 01 3B12 01 0 20mA 3B32 02 3B12 02 ZERO SUPPRESSION VOLTAGE For the 3B12 the zero suppression term Iz can be set for any value between 63 5mA and 63 5mA through the use of and while 1 can be set to any value from 31 75mA to 31 75mA for model 3B32 Iz is determined from the following relations 3812 12 0 0635 x R R 12 Amps 3832 12 0 03175 X R 12 In Amps with the sign of Iz determined by the choice of location A positive or location B negative for R see Figure 2 1 2 3 The total resistance of R R3 should be approximately 10k to avoid taking excessive current from the voltage reference or self heating in the resistors Using 10kQ as the total value R and are determined from the following relations 3B12 10001 6 385V 10 0 10k Iz in Amps 3B32 x 10 Iz in Amps
22. 25 42 4e 42 pur lt EO C SNS O SNS n 36 3 lt gt 1 1 1 SNS SNS 22 SNS PN NIE PM 2 39 2 39 2 SNS 2 2 545 29 i 2 SNS 23 24 3 224 3 24 e 23 22 3 SNS ELE 3 SNS SNS ES J5 J4 J3 732 CHANNELS ONLY OR 724 OUTPUT CHANNEL Figure 5 7 AC1323 Schematic ELEME V VON Bb vbw NS SNS LO BACKPLANE CHANNEL APPENDIX A CUSTOM RANGING Wide zero suppression and easy field ranging are available with the AC1310 plug on ranging card and the externally programmable version of the desired input module 3B_ _ 00 The AC1310 houses user supplied resistors that determine the zero and span of the custom range This section discusses custom ranging and its error contributions temperature effects and limitations APPENDIX Al CUSTOM RANGING mV V mA THERMOCOUPLE STRAIN GAGE FREQUENCY AND AD590 MODELS For the purposes of custom ranging the 3B Series modules can be discussed in three categories the RTD models the LVDT model and all others The basic transfer function of all modules other than the RTD and LVDT modules can be characterized as Vo Gx Vin Vz Where Vo Output Voltage G Gain Vin Input Voltage Vz ZeroSuppression Voltage This equation applies directly to millivolt and voltage input models 3B10 3B11 3B16 3B18 3B30 3B31 3B40 3B41 and indirectly to the thermocouple input model
23. Figure 4 2 2 2 mates with the appropriate connectors required to interface with any user s equipment The AC1325 will accept the AC1316 AC1319 board mount connectors or any standard flat cable connector with 0 1 spacing and has plated through holes for the necessary custom connections Cables and connectors are offered to interface with the interface boards These are defined in Table 4 2 1 2 Figure 4 2 2 2 1325 4 3 4 3 1 Figure 4 3 2 Preferred Current Output Load CURRENT OUTPUT CONSIDERATIONS POWER CONSIDERATIONS Loads of up to 8500 can be used if an external 24V is supplied If the user wishes to use a 15V supply for current output the 15V be strapped to the loop power on connector see Figure 4 3 1 With this arrangement the load resistance on current outputs is limited to 4000 max Note also that this approach will require an additional 27mA per module from the backplane power supply P3 DC POWER CONNECTOR Figure 4 3 1 Jumper Strapping 15 Power to Loop Power LOOP POWER 1 LOOP COM 2 NC 3 15V 4 15 5 6 15V CURRENT OUTPUT LOAD CONFIGURATION The nonisolated current outputs all modules except 3B39 are configured for a loop output and a grounded return The typical configuration is shown in Figure 4 3 2 with the output dropped across the load resistor and connected to the RETURN screw terminal Since the RETURN screw terminal is grounded a perfectly accept
24. Rack Mount Options we o Sex 3 2 Rack Mount Assembly 3 2 Surface Mount Drill Template 23 Surface Mount Dimensions 3 3 Surface Mount Assembly 3 3 Power Supply Installation 34 Power Connections 34 DC Power Connections 3 5 Screw Terminal 3 5 Voltage UO 3 6 Interface Boards Surface Mount Dimensions 3 7 Interface Boards Surface Mount Drill 3 8 Adjacent Channels that can be 4 1 Relationship between 15 and Loop Power Supply Commons 4 2 AG 1320 So ee aA dw SO ae CUR gea or D 4 3 axons eer WE od Ro CU A eee b a use Fe BS eds 4 3 421922 5 Bes eS GO eee 4 4 ACTIS M PERI 4 4 4 5 2 213925 se Ae oro e Re de 4 5 Jumper Strapping 15 Power to Loop 46 Preferred Current Output Load 4 6 Optional Current Output Load Con
25. SPECIFICATIONS typical 25 C and 15V 24V dc power Model 3B45 3B46 Inputs Min and Max Spen 25Hz 1100Hz 520Hz 25kHz Input Voltage Level 10mV 220V rms Outputs 0 10V 2 5 4 20mA or 0 20mA Ri 010 8500 Maximum Current Output for Input Overload 31mA Accuracy 0 1 span Nonlinearity 0 02 span d Stability vs Ambient Temperature Voltage Output Zero 500u V C Span 0 0050 reading C Current Output w r t Voltage Output Zero 0 0025 span C Span LO 0 0025 reading C Common Mode Voltage Input to Output 1500V peak max Differential Input Protection 220V rms continuous Voltage Output Protection Continuous Short to Ground Current Output Protection 130V rms continuous Zeroand Span Adjustment Range 5 span Input Transient Protection Meets IEEE STD 472 SWC Input Resistance Small Signa 15MN Large Signal Vin gt 4V 82k Input Bias Current 3nA Output Ripple 10mV rms 10 span max Output Noise 75p mms at 100kHz Power Supplies 15V Input Supplies Range Rated Operation X 11 5V 16 5 Supply Rejection 0 01 span V Supply Current 16mA 19mA 24V Loop Supply Range 13 5V to 30V Supply Rejection 0 0002 span V Supply Range 27mA at FS Size 3 1507 x 0 775 x 3 395 Environmental Temperarure Range Rated Performance 25 C to 85 C Storage Temperature Range 55 C to 85 Relative Humidity Conforms to MIL Spec
26. Span Current Output w r t Voltage Output Zero Span Common Mode Voltage Input to Output 1500V pk max Common Mode Rejection 50Hz or 60Hz Source Unbalance 160dB Normal Mode Rejection 50Hz or 60Hz 60dB Differential Input Protection 220V rms cont Voltage Output Protection Continuous Short to Ground Current Output Protection 130V rms cont Zero and Span Adjustment Range 5 of span Response Time to 90 Span 0 25 Input Transient Protection Meets IEEE STD 472 SWC Input Resistance Input Bias Current 3nA Input Noise 0 2u V 2 bandwidth Output Noise 504 V rmsin t00kHz bandwidth Bandwidth 3Hz 3dB Power Supplies 15V Input Supplies Range Rated Operation 11 5V to 16 55 Supply Rejecuon 0 01 span V Supply Current lOmA 24V Loop Supply Range 12V to 30 Supply Rejection 0 0002 span V Supply Current 27mA at FS Size 3 150 x 0 775 x 3 395 Environmenta Temperature Range Rated Performance 25 to 85 C Storage Temperature Range 55 C to 85 C Relative Humidity Conforms to MIL Spec 202 010 95 60 noncondensing RFI Susceptibility 0 5 span error SW 400M Hz 3 ft NOTES lFor a0 20mA range a typica minimum ouput current is 10 2 Accuracy spec includes the combined effecis of repeatability hysteresis and linearity Does not include sensor or signal source error 3B31 02 and 3831 03 have CMR values of 150dB and 145dB respecti
27. Why can t the 3B16 strain gage module handle 1002 load cells The 3B16 provides 10V of excitation with approximately 35mA driving capability With a 1000 strain gage requiring 10V excitation there would be a need for 100mA driving capability If using the 3B18 with the 3 3V excitation only 33mA is required Do I have to return the 20m output from 3B modules back into the same module or can I use a common return path for all my 3B outputs With nonisolated modules you may use the loop power supply return for all the modules You will of course lose the overvoltage protection that each module offers on its current return E 1 NOTES 98 0996001 Addendum to the 3B Series User s Manual Important Information for use of the 3B Series Signal Conditioning Subsystems in RFI EMI fields The 3B Series Modular Signal Conditioners has been tested and passed the stringent heavy industrial requirements of the European Union s elec tromagnetic compatibility EMC directive The 3B Series modules have the CE Communit Europ enne mark on their label indicating their approval Only products that comply with these directives can have the CE mark affixed Only CE marked products can be sold in the EU starting on January 1 1996 In order to comply with the European Standards in a typical heavy indus trial application we recommend the following setup 1 The modules must be mounted on a standard jomation backplane 2
28. and R3 are determined from the following relations V R 10kO LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The allowable input voltage for the 3B16 is 0 to 12V The range of the module s voltage output adjustment is at least 0 5 at the module output and can therefore correct any error less than 0 5V Gain If possible the resistors used should be 1 tolerance 10 See Appendix A for a detailed discussion of limits error contributions and tem perature effects of the ranging card ipea 2 1 6 MODEL 3B17 FEATURES Accepts LVDT or RVDT Input Provides Complete LVDT Conditioning Provides 1kHz to 10kHz AC Excitation 100Hz Bandwidth High Accuracy 0 1 Low Drift 0 01 c FUNCTIONAL DESCRIPTION The 3B17 is a wideband input module that is designed to accept signals from 4 5 or 6 wire LVDT or RVDT transducers The 3B17 provides an ac excitation of 1 5V rms at frequencies ranging from IkHz to 10kHz Figure 2 1 6 1 shows a block diagram for the 3B17 The ac excitation is provided on terminals 1 and 4 The amplitude and frequency of the ac excitation can be specified when ordered or can be configured externally with the AC1310 custom ranging card Input protection of up to 130V is provided for the input and excitation circuitry The signal is amplified to give the high level voltage output and automatically synch
29. therefore correct any input offset error of less than 0 5V Gain If possible the resistor should be 1 tolerance Oppm See Appendix A for a detailed discussion of limits error contributions and tem perature effects of the ranging card 2 18 Model 3B20 FEATURES Accepts Straln Gage or Torque Transducer inputs Provides Complete Strain Gage Conditioning Provides 1kHz to 10kHz AC Excitation Dual High Level Outputs Voltage 10V Current 4 20mA 0 20 High Accuracy 0 1 Low Drift 0 01 C 100Hz Bandwidth FUNCTIONAL DESCRIPTION The 3B20 is a wideband input module that is designed to interface to four arm bridge transducers The 3B20 provides an ac excitation of 2 10V rms at frequencies ranging from kHz to lOKHz This module can accept inputs from 1 5mV mms to 150mV rms accommodating most four arm bridge values Figure 1 is a functional block diagram for the 3B20 The ac excitation is provided on terminals 1 and 4 The amplitude and frequency of the ac excitation can be speci fied when ordered or can be configured externally with the AC1310 custom ranging card Protection of up to 130V rms is provided for the input and the excitation circuitry The signal is amplified to give the high level voltage output The gain of the module can be a standard range custom range or user configured with the AC1310 Both the current and voltage outputs can be adjusted by potentiometers for a minimum of 25 of the span range a
30. 0 1 spacing Universal Adapter with 26 Pin Connector in 26 Screw Terminals out Universal Adapter with two 26 Pin Connectors im 4 patterns of 50 sockets out Accommodates the necessary connectors for each application APPENDIX D NOT to be distributed outside the FACTORY MUTUAL SYSTEM except by CLIENT SUBSYSTEM HAZARDOUS M Sd ANALO E S INC oN STRIAL PARK on MASS 02062 lt lt 1 1 OK5AB AX 3611 _ DECEMBER 26 1984 pE Factory Mutual Research 1151 Boston Providence Turnpike Box 688 Norwood Massachusetts 02062 MODELS 3801 3802 3 03 SIGNAL en Factory Mutual Research 1151 Boston Providence Turnpike Box 688 Norwood Massachusetts 02062 pecs December 26 1984 361 MODELS 3801 3802 3803 SIGNAL CONDITIONING 1 0 SUBSYSTEM for HAZARDOUS LOCATIONS amp from ANALOG DEVICES INC ROUTE 1 INDUSTRIAL NORWOOD MASS INTRODUCTION 1 1 Analog Devices Inc request Section 1 2 to be in compliance with following standards of the apparatus listed in eser requirements of the Title lt Issue Date Electrical Equipment for ISA dS12 12 1983 Use in Class I Division ie 123 Hazardous Classified Locations O Electrical Utilizati Class No 3820 September 1979 Equipment BN 2 apparatus 18 nonincendive with nonincendive circuit field ass I Division 2 Groups and D hazardous locations
31. 10 X attenuation of the input signal The internal references 6 35V and 3 175V respectively so ordinary 100mW resistors are suitable for zero suppression Using 10kQ as the total value and are determined from the following 3B30 3B32 Model 3 10 3 11 3 13 3 16 3B11 3B37 3B40 3B47 3 31 3 41 10K ees E Ro 63 5 1531757 2 75 10kQ R R3 10kQ R R3 R For the ac input modules the zero suppression voltage Vz can be set for any value between 0 and 1 23V Since the signal varies from 0 to 1V dc at the amplifier input a zero suppression voltage of 0 to 1V dc corresponds linearly to a 0 100 of full scale zero suppression The zero suppression resistor R is determined from the following relations for all three models LOKO 277123 VJV A 2 The zero suppression frequency Fz can be set for any value up to 80 of the desired input span through the use of R Zero suppression is limited by temperature drift Values larger than 80 of the input span will have a larger amount of temperature drift The value for R is determined from the following rela tions 3B45 3B46 1 52 x 10 3 33 x 108 R R o 2 F 2 F ADDITIONAL CUSTOM RELATIONS Model 3B18 s standard bandwidth is 20kHz The bandwidth can be set for any value less than 20kHz using the A
32. 202 0 9545 60 noncondensing RFI Susceptibility 0 5 span error SW 400M Hz 3 ft NOTES Fors0 20mA range s typical minimum output current is 104A 1 Accuracy spec includes the combined effects of repeatability hysteresis and linearicy Does Dot include scs sensor of signal source error Custom calibration may be accomplished with s custom ranging card AC1310 24V de power is only needed for driving the current output at up to 85001 If only voltage output is used or a current ourput load of 4004 oc bess is desired JSV all that is required Specifications same 3 45 Specifications subject to change without notice ORDERING INFORMATION Input Range Model Number Frequency Input Externally Programmable Min Span 25Hz Max Span 1100 2 3B45 00 0 25Hz 3845 01 0 300 2 3845 02 Frequency Input Externally Programmable Min Span 520Hz Max Span 25kHz 3B46 00 0 1 5kHz 3B46 01 0 3kHz 3B46 02 0 25kHz 3B46 03 ZERO SUPPRESSION FREQUENCY The zero suppression frequency Fz can be set for any value up to 80 of the desired input span through the use of R Zero suppression is limited by temperature drift Values larger than 8096 of the input span will have a larger amount of temperature drift The value for R is determined from the following relations 3B45 3B46 1 52 x 107 3 33 x 10 R pR 223x 10 F HYSTERESIS SELECTION standard 3B45 or 3B46 is shipped with zero hysteres
33. 4 20 0 20mA Ry 010 85002 0 1 span 0 01 span z0 02 C C 0 0025 reading C 0 0025 span C 0 0025 reading C 1500V pk max 160dB 60dB 220V rms cont Continuous Short to Ground 130V rms cont 5 of span 0 2sec Meets IEEE STD 472 SWC ISM 15 0 2 rms at 10H2 bandwidth Upscale 10sec SOL V rms 100 2 bandwidth 3Hz 0 5 0 5 11 5 to 16 5V 0 01 span V 2mA 12V to 30V 0 000296 span V 27mA at FS 3 150 x 0 775 x 3 395 25 C to 85 C 55 to 85 C 010 95 t 60 C noncondensing 0 5 span error 5W 400MHz 3 ft Fora0 20mA range a typical minimum output current is 104A Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does Not include sensor or signal source error wide range of zero suppression and custom calibration may be accomplished with a custom ranging card AC1310 When used with CJC sensor provided on 3B Series backplanes Compensation error contributed by ambient temperature changes 24V de power is only needed for driving the current output at up to 8500 If only voltage outputs used or acurrent output load of 400 or less 15 desired 15V is all thar is required Specifications subject to change without notice ORDERING INFORMATION EXAMPLE MODEL 3 37 02 Select Thermocouple Type J K T E R S or B Sele
34. 4mV 6 Place the LVDT in the desired full scale output position and adjust Is for Iout 20mA 0 016mA or the voltage measured occurs 5V 4mV If a 0 20mA output is desired for a to 10V output adjust Iz for OmA 0 020mA in step 5 and Is for 20mA 0 02 in step 6 A typical minimum output current is 10 with 0 20mA operation If the current output is to be proportional to a 10V to 10V output instead of 0 to 10V output Iz should be adjusted for a Full Scale input in step 5 SPECIFICATIONS typical a 25 C and 15V 24V dc power Mode Inputs Outputs Maximum Current Output for Input Overtoad Accuracy when Calibrated Nontinearity Stability vs Ambient Temperatures Voltage Output Zero Span Current Output w r t Voltage Output Zero Span LVDT Excitation Excitation Voltage Excitation Tolerance Excitation Frequency Excitation Drive Excitation Harmonic Distortion Differential Input Protection Voltage Output Protection Current Output Protection Voltage Zero Adjustment Range Voltage Span Adjustment Range Current Zero Span Adjustment Range Bandwidth Response Time to 90 Span Input Resistance Input Bias Current Power Supplies 15V Input Supplies Range Rated Operation Supply Rejection Supply Current 24V Loop Supply Range Supply Reiection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humi
35. Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does not include sensor or signa source error 2 wide range of zero suppression and custom calibration may be accomplished with a custom ranging card AC1310 When used with CJC sensor provided on 3B Series backplanes Compensation error contributed by ambient temperature changes Specifications subject to change without notice ORDERING INFORMATION EXAMPLE MODEL 3 47 J 01 Select Thermocouple Type J K T E R S or B and Range TC Range in C F Type No Accuracy Oro 760 J 01 0 76 C 32 to 1400 100 to 300 J 02 0 4 C 148 to 572 Oro 500 J 03 0 36 C 32 to 932 Oto 1000 K 04 1 0 C 32 to 1832 Oro 500 K 05 0 38 C 32 to 932 100 to 400 T 06 1 1 C 148 to 752 200 T 07 0 3 C 32 to 392 Oto 1000 E 08 1 5 C 32 to 1832 500 to 1750 R 09 1 6 C 932 to 3182 500 to 1750 S 10 LSC 932 to 3182 500 to 1800 B 11 3 3 C 932 to 3272 2 2 OUTPUT MODULES FEATURES High Level Voltage Input 0 10V 10V Process Current Output 4 20mA 0 20mA High Accuracy 0 196 Reliable Transformer Isolation 1500V CMV 90dB CMR Meets IEEE STD 472 Transient Protection SWC Output Protection 130V or 220V rms Continuous Reliable Pin and Socket Connections Low Cost per Channel APPLICATIONS Process Control Factory Automation Energy Management Data
36. ERE 8 8 QS 2 fae E 1 CHO O RIB A 4 cH c 5 Bg 3 3K 2 FE LO 2 bcm E 12 1008 com lt gt ouTCOM S 12 12 i wr W3 I5Y 5 4 2 vour S 14 13 13 vOUT Ko FROM 55 15 15 chs LL i CHANNEL 13 19 943 23 23 VOLTAGE E 24 DU T7 IN 2 EE eee ES SIMILAR TO 923 cu lt 4 3 8 8 lt 9 to F1 SNS COM EXE e 2 7855 ae NEUTRAL GND 14 a cg E EN a SHS GUT 22 25 SD CH I CH 5 2THRU CM 15 Figure 5 1 3B01 Schematic eS Jt J3 JIS LOGP OUT Lo out gt Loar out 2 2 2 LOOP RET One RET gt gt woe LOOP RET TBI i 5 LOOP v zd BENE 2 amp 6 21 e pm wa P1 P2 E3 Ri R18 r CHO 21 o STR 76 5 BE 1 LOOP v en 5 ae Ss 2 lt 1 lt 2 ee EE ett BE Le 1 YOLATSE QuT COM OUT IN fr Y OUT Vous 24 24 15 15 i FROM COM CHA CHANNEL cus t 5 m 19 19 Rg 5 s CHE amp 2 SIMILAR TO 923 22 25 Ep 6 4
37. V rms 0 900 for sinusoids Vim full scale rms input voltage The difference between these three models is in the input scaling The scaling is done before the zero suppression or gain so that the maximum value presented to the rectifier is 1V rms The signal is processed the same from this point on in each of the three models is determined from the following relation which is the same for all models _ 40k _ 10V Vin 10V represents the module s output span ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 6 35V and 6 35V for nonisolated models 63 5V to 63 5V for model 3B11 and 3 175V and 3 175V for isolated models 31 75V to 31 75V for model 3B31 and 3B41 There is no zero suppression for the 3B18 The ac input modules are discussed separately at the end of this section The relations for Vz are defined below Models 3B10 3B12 3B13 3B16 3B11 3B30 3B32 3B37 3B40 3B47 Relati V 6 35V V 63 5V 3 175 elations 2 Model 3B31 3B41 R Relation a x 31 75V 2 3 The sign of Vz is defined by the mounting of in location A positive B negative The total resistance of R R should be approximately 10kQ to avoid taking excessive current from the voltage reference or self heating of the resistors For the 3B11 and 3B31 3B41 the 63 5V and 31 75V terms are functions of the
38. and nonisolated versions The input modules feature complete signal conditioning circuitry optimized for specific sensors or analog signals and provide high level analog output Each input module provides two simultaneous outputs 0 to 10 or 10V to the system connector and 4 20mA or 0 20mA to the output screw terminals Output modules accept high level single ended voltage signals and provide an isolated or nonisolated 4 20mA or 0 20mA process signal All modules feature a universal pin out and may be readily mixed and matched and interchanged without disrupting field wiring Each backplane contains the provision for a subsystem power supply The 3B Series Subsystem can be powered either from a common dc dc or ac power supply mounted on each backplane or from an externally provided dc power supply Two LEDs are used to indicate that power is being applied FM APPROVAL THE 3B SERIES The 3B Series Signal Conditioning Subsystem is approved by Factory Mutual for use in Class I Division 2 Groups A B C and D locations This approval certifies that the 3B Series is suitable for use in locations where a hazardous concentration of flammable gas exists only under unlikely conditions of operation Equipment of this type is called nonincendive and needs no special enclosure or other physical safeguards For additional information on the 3B Series FM Approval see Appendix D APPLICATIONS The Analog Devices 3B Series Signal Conditioning Su
39. be added directly to a module s input offset drift A lower value can of course be obtained the use of a better resistor Temperature drift in the value of the gain setting resistor R will directly affect the module s gain drift Note however that the basic drift specification for the modules includes the effect of a gain setting resistor drift of lOppm C Rated performance will be obtained if the drift of is less than or equal to this value APPENDIX A3 CUSTOM RANGING LVDT MODULE The excitation voltage amplitude of the 3B17 LVDT input module is set by which is determined from the following relation 10kQ x V rms R 7 rms V rms is the desired rms amplitude of the oscillation and it selected for any value between 1V and 5V The accuracy of the excitation is 10 with a harmonic distortion of less than 0 5 Using resistors R and R3A the excitation frequency can be set for any value between 1kHz and 10 2 These values are determined by the equation below 10 So BS 6 3 where f is the desired frequency of oscillation Since the excitation voltage resistor is used to set the amplitude of the excitation its drift is reflected directly in the output of the module Therefore the excitation voltage resistor should be 1 tolerance 10ppm The frequency setting resistors on the other hand need only be 100ppm since the module is insensitive to changes in frequency APPENDIX A4
40. colors of the labels are defined as ISOLATED INPUT white lettering on a black background NONISOLATED INPUT black lettering on a white background ISOLATED OUTPUT white lettering on a red background NONISOLATED OUTPUT black lettering on a yellow background MODULE CONSTRUCTION All module cases are made from a thermoplastic resin which has a fire retardent rating of 94V 0 and is designed for use from 55 C to 85 Each module s printed circuit board is 0 031 inch thick glass epoxy and the module s pins are gold plated contacts with a nickel undercoat INDIVIDUAL MODULE MOUNTING KIT The AC1345 individual module mounting kit is to be used when a user defined backplane is substituted for a 3B Series backplane Figure 4 5 2 shows the outline of a 3B Series module when plugged into a 3B Series backplane and gives the dimensions of the mating connectors and retaining clips and the spacing between them 0 200 m inimum spacing is required between the input conductors and 0 400 minimum spacing is used between input and output conductors This spacing is required to maintain the 1500V CMV isolation provided by the isolated 3B modules The dimensions of the figure should be considered when individual module mounting is desired The pinout of the input modules is defined in Section 2 1 and the pinout for the output modules is defined in Section 2 2 Each AC1345 comes with a transistor resistor pair that is to be used as a cold juncti
41. i2mA 12V to 30V 0 0002 span V 27mA at FS 3 150 x 0 775 x 3 395 25 to 85 55 C to 85 C 0 to 95 60 C noncondensing 0 5 span error 5W 400M Hz 3 ft For a 0 20mA range a typical minimum output current is 10 Accuracy spec includes the combined effects of repeatability hysteresis and linearity Docs not include sensor or signal source error Includes excitation circuitry A wide range of zero suppression and custom calibration may be accomplished with a custom ranging card AC1310 5 24V dc power is only needed for driving the current output at up to 850 If only voltage output is used or a current output load of 4000 or less is desired 15V is all that is required Specifications subject to change without notice ORDERING INFORMATION Input Ranges Externally Programmable 55 C to 130 C 67 F to 266 F Model Number 3B 13 00 3B 13 01 4 R should always go in location A The total resistance of should be approximately 10k to avoid taking excessive current from the voltage reference or self heating in the resistors If there is no zero suppression 273 K OV should be a jumper and R left open see Figure 2 1 3 3 GAIN SELECTION GAIN AND ZERO ONLY SUPPRESSION Gain Resistor Gain Resistor Jumper Zero Suppression Resistor Raa Open Zero Suppression Resistor Figure 2 1 3
42. in power supplies as listed below Signal Module 3B17 Linear Differential Transformer 3B18 Wideband ain Gage Inputs 3B40 3B41 nd Isolated mV and V inputs 3B42 3843 3844 AC mV and inputs 3B45 3B46 Bolated Frequency inputs 3B47 Isolated Linearized Thermocouple input 5 Vac to 125 Vac 15 Vde 800 mA 15 Vdc 225 mA AC1307 AC1307E 29 to 240 Vac 24 Vde 350 mA The plug in dules contain circuits that are very similar to the modules examined a 1222 ed FM 7 1 OK5AB AX BELOW FOR FACTORY MUTUAL USE Y rower Supply AN Output Both Models COMMENTS REVISION REPORT J i REVISION NOTICE NO 1 4 0 I A FORWARD APPROVAL AGREEMENT FILE O yes 3611 REVIS EVISION S AUTHORIZED 797 8 84 FMRC PRINTEO IN JSA D 6 uere are uo relays switches or contacts in any of the new plug in modules Therefore no arcing or sparking contacts Temperature tests were conducted on one of the new power supplies The maximum temperature measured on Model AC1307 power supply was 95 C at an ambient of 40 C Model AC1307E has a 240 ac power input and both have the same regulating circuitry Analysis indicates Model AC1307E would produce the same maximum temperature on the 15 volt regulator transistor Report J I OK5AB AX identified a maximum temperature of 107 C referenced to 400C on Signal Module 3816 Analysis of the new signal module circ
43. installed and W2 removed to force pin 25 to power supply common third option available to the user provides the capability of directing the voltage output of any input module to an adjacent output module This feature could be used to provide an isolated current output from an isolated input module which gives two levels of 1500V CMV isolation If this feature is desired it is implemented by using wire wraps or jumpers on the appropriate pins of the jumper posts located near the voltage I O connectors Figure 4 1 1 defines the channel pairs that can have this feature Each backplane has been keyed to prevent modules from being improperly plugged in The keys and plastic module retainer clips assure that all modules will be properly plugged in Each backplane contains two voltage I O connectors that are identical electrically Both connectors may be useful when using a 3B Series backplane for both analog input and analog output when the data acquisition system has separate input and output connectors d E d di E 3801 3B02 3B03 Figure 4 1 1 Adjacent Channels That Can Be Connected SURGE WITHSTAND CAPABILITY The 3B Series isolated modules have been designed to meet the IEEE Standard for transient voltage protection IEEE STD 472 The Surge Withstand Capability can be tested with not less than 50 2 5KV bursts per second test duration of 2 seconds is widely accepted A rise of 20KV us is specified S
44. lt 3 500 1331 1331 AC1331 8 89 1332 2 425 6 16 4 275 10 86 4 000 10 16 4 800 12 19 s A m 0 600 1 52 TK TA B B B 0 602 1 53 0 602 7 300 18 54 ESI 1 53 1 53 0 602 10 500 26 67 1 53 16 900 42 93 1 Holes Marked Are to Secure End Brackets Drill and Tap for 10 24 Screw Use Fiat Washers Under the Screw Heads 25 Driil 0 1495 Inches is Recommended for 10 24 2 Holes Marked B Are for Securing Corner Standoffs of 3B Series Backplanas with 6 32 x 1 Screws Provided Drill and Tap for 6 32 Screw 36 Drill 0 1065 Inches is Recommended for 6 32 Tap 3 Holes Marked C Are Optional Mounting for AC1331 and AC1332 Use 6 32 x 1 Screws Provided Drill and Tap for 6 32 Screw 36 Drill 0 1065 Inches is Recommended lor 6 32 Tap Figure 3 2 2 Surface Mount Dimensions MODULE RETAINING BAR 70 0996501 END BRACKET 3B SERIES BACKPLANE 70 0996502 END BRACKET 5 375 13 65 8 END VIEW Figure 3 2 3 Surface Mount Assembly 3 3 3 4 POWER SUPPLY INSTALLATION Each power supply comes with a retainer clip and required hardware that can be used to secure the power supply to any backplane This feature allows each power supply to be removed from the backplane without disturbing the mounted backplane If desired the ac power supplies can be secured to the backplane from the
45. module is identical in size 3 150 x 0 775 x 3 395 and has the same pin out The transfer function provided by each input module is Input specified sensor measurement range Output 0 to 10V or 10V dc 4 20mA or 0 20mA nonisolated with respect to voltage output The transfer function provided by each output module is Input 0 to 10V or 10V Output 4 20mA or 0 20mA All modules include a printed circuit board incorporating electronic circuitry housed in a protective plastic shell The shell contains provisions for securing each module to the backplane INPUT MODULES Voltage Current Nonisolated Isolated Input Type Span Output Output Modules Modules dc lOmV SOmV 100 10V 4 20mA 0 20mA 3B10 3B30 3B40 dc 1V 5V 10V 4 20mA 0 20mA 3B10 3B31 3B41 dc 10V 4 20mA 0 20mA 3B 3B31 3B41 dc 4 20mA 0 20mA 0 10V 4 20mA 0 20mA 3B12 3B32 Thermocouple Types J K T 5 0 10V 4 20mA 0 20mA 3B37 3B47 1000 Platinum RTD 2 3 4 wire a 0 00385 linearized 0 10V 4 20mA 0 20mA 3B14 3B34 1000 Platinum RTD Kelvin 4 wire a 0 00385 linearized 0 10V 4 20mA 0 20mA 3B15 100 Copper RTD 2 or 3 wire 0 10V 4 20mA 0 20mA 3B34 C 1202 Nickel RTD 2 3 or 4 wire 0 10V 4 20mA 0 20mA 3B34 N Strain Gage 30mV 100mV 10V 4 20mA 0 20mA 3B16 3B18 LVDT 4 6 wire RVDT 4 56 wire 10V 4 20mA 0 20mA 3B17 ADS90 AC2626 Solid State Temperature Transducer 0 10V 4 20mA 0 20mA 3B13
46. or self heating in the resistors For the 3B11 the 63 5V term is a function of the 10 x attenuation of the input signal The internal voltage reference is 6 35V and high watt resistors are not required for zero suppression Using 10k as the total value R and R3 are determined from the following relations 3B10 3B11 Vz Vz R 635 10k R 635 10 0 R3 OkO R 10kQ REF 4 6 35 6 35 7 Figure 2 1 1 3 3B10 Zero Suppression Resistors LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed For the 3B10 the maximum input voltage for normal linear operation at either the or LO input terminal is 6 6V with respect to output system common For the 3 11 a similar relation applies after the input signal has been attenuated by a factor of 10 These relations are shown below 3B10 Vem 6 6 V 3Bll Vem S lt 6 6 The range of the module s voltage output adjustment is at least 0 5V at the module output and can therefore correct any input offset error of less than 0 5V Gain for the 3B10 and 5V Gain for the 3B11 If possible the resistors used should be 1 tolerance 10 See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 6 2 1 2 MODELS 3B12 AND 3B32 FEATURES Accepts Process Cur
47. ranges between 25kHz and SOkHz with a gradual decrease in linearity 0 30 range has 0 02 nonlinearity and 0 50kHz range has 0 5 nonlinearity Adjustability of offset As was mentioned above the range of the voltage output ZERO pot is 0 5 volts at the module output Equivalently it can correct for INPUT offsets of up to 0 5V G The errors in Vz can limit the maximum gain when zero suppression is used When Vz is zero no zero suppression the offset adjustment need only cover the module s input offset voltage typically less than 50 microvolts so that gains up to 10000 are practical in many cases Some exceptions are the 3B37 and 3B47 where CJC errors limit gain to about 4000 the 3B18 whose larger input offset implies a gain limit of 5000 and the 3B40 where oscillation may occur for gains above 5000 Noise At the higher gains beyond 1000 all of the noise seen at the module output is a reflection of the module s input noise seen through the chosen gain Although the noise does not rise in proportion to gain due to a gradual decrease in module bandwidth beyond G 1000 there may well be a point beyond which system resolution is limited by noise rather than by the resolution of the data converter There is in general no benefit in increasing gain beyond that point APPENDIX 1 MULTIPLE LVDT INSTALLATIONS When multiple LVDTs are used in the same installation good wiring practice is recommended to minimize interfere
48. suppression and gain If there is to be no zero suppression should be a jumper and R should be left open These resistors should be installed as indicated in Figure 2 1 11 2 GAIN AND ZERO GAIN SELECTION SUPPRESSION R Gain Resistor Gain Resistor R2 Jumper Zero Suppression Resistor R3 Open Zero Suppression Resistor Figure 2 1 11 2 3 40 3 41 Custom Ranging SPECIFICATIONS typical 25 C and 15V 24V dc power Model 3B40 3B41 Inputs l0mV to IV 10 Outputs 10 2 4 20 or 0 20mA Ry 8500 Accuracy 0 1 span Nonlinearity 0 02 span x Stability vs Ambient Temperature Voltage Output Input Zero 10pV C Output Zero 254yV C 4 Span 0 0025 Current Output w r t Voltage Output Zero 0 0025 span C 0 0025 reading C Common Mode Voltage Input to Output 1500V pk max Common Mode Rejection 50 60Hz Source Unbalance I00dB 85dB Differential Input Protection 220V rms cont Voltage Output Protection Continuous ShorttoGround Current Output Protection 130V rms cont Zero and Span Adjustment Range 5 of span Bandwidth 348 10kHz x Response Time to 90 55us Resistance 200M0 250k 1 Input Bias Current SRA Input Noise dc IMHz Rs IOk 1 rms Output Ripple and Noise 25mV pk topk Power Supplies 15V Input Supp
49. the zero and span of the new range A special range can also be factory configured Consult the factory for details The ranging relations are identical for the 3B14 and 3 15 Ranging applications can be divided into two categories depending on whether the module s internal linearizing circuit is used If internal linearization is required the following procedure applies l The module s output voltage must always be positive since the linearizing circuit is active only for Vo gt 0 The relations assume the use of a 10V output span Other output ranges are possible contact the factory for information on any other positive output range 2 Any type of RTD can be used provided that its resistance does not exceed 10 0 in the range of interest and its temperature characteristic is concave down While virtually all RTDs have these properties the conformity errors specified for these models apply specifically to 1000 platinum RTDs following the European curve a 0 00385 Conformity errors for other RTD types can be supplied by the factory 3 Ranging component values are found from 20k G Gain Setting Resistor Zero Suppression Resistor 3B15 Rz 3 14 R3A Rz Linearization Resistor R4 9 5 20 1 Where Gain G 40k x ARus ARE Rz Resistance of the RTD at the temper ature Tarn that is to give Vo OV Q ARs is the change in resistance from Tmin to Tmax which
50. to program the current output to be proportional to either the 0 to 10 output or a 10V to 10 output The second option allows the user to determine if the current output is 4 20mA or 0 20mA All modules are shipped from the factory configured so that the current output is proportional to the 0 to 10V output and each current output is 4 20mA If the push on jumpers are changed the zero and full scale points will shift by approximately 0 2596 of span and will need to be recalibrated to remove this error The current output of all input modules requires a grounded return The grounded return of the current output can only be used for the return of ONE MODULE Two or more modules SHOULD NOT BE connected to the same RETURN terminal If several current loops are to be returned with one ground that connection should be made to the Loop Common on the DC POWER connector OUTPUT CONNECTOR RETURN 2 1 TOUT KEY 4 3 KEY LOOPPOWER g 5 424 COMMON RES 8 7 RES RES 10 9 15V V OUT 12 11 POWER COM V 4 OUT 14 13 15V BOTTOM VIEW Output Connector TOP VIEW R1 R4 ARE USER SUPPLIED RESISTORS Ranging Card CURRENT OUTPUT JUMPER PROGRAMMING UNIPOLAR OUTPUT BIPOLAR OUTPUT BOTTOM VIEW Jumper Options INPUT CONNECTOR CJC OUT 2 1 LO CJC COM 4 3 HI EXC 6 5 EXC BOTTOM VIEW Input Connector OUTPUT POWER CURRENT OUTPUT PROGRAMMING OPTIONAL RANGING CARD INPUT BOTTOM VIEW Bott
51. to give Vo OV ARps Q ARus a measure of nonlinearity Since copper RTDs are linear devices the 3B34 C 00 does not need a linearization resistor 4 ARgs is the change in resistance from Tain to Tmax which will give Vo ARys is the change in resistance from to Typ which will give Vo 10V 5V If internal linearization is not required then the following procedure applies 1 Output voltages at the endpoints of the span may be anywhere in the range of 10V to 10V 2 Any type of RTD can be used provided that its resistance does not exceed 10 in the measurement range of interest 3 Ranging components are computed from 3B14 3B15 3B34 00 3B34 N 00 in Setti istor R SETS x 200 R SEES 20 0 Gain Setting Resistor i 4000 Ves 2000 Ves X 3B34 C 00 500 Vrs ARps x 20k Zero Suppression Resistors 3 14 Rz Rz 3 15 Rz Where Rz Resistanceofthe RTD atthe temperature that isto give Vo 0V Vrs Positive full scale output voltage desired ARrgs Changein RTD resistance from Rz to the full scale temperature The fact that R is set to the zero volt output point does not mean that negative outputs will not be meaningful it just provides the simplest relation Once R and R are determined the output voltage at any RTD temperature can be found given the RTDs resistance at that temperature from the following relations 3B
52. will give Vo 10V 5 is the change in resistance from Tmi to which will give Vo 5V lt 8 measure of nonlinearity Figure 2 1 4 2 graphically shows the RTD values needed for ranging the 3B14 and 3B15 while Figure 2 1 4 3 depicts the mounting locations of the ranging resistors If internal linearization is not required then the following procedure applies 1 Output voltages at the endpoints of the span may be anywhere the range of 10 to 10V 244 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs Outputs Maximum Current Output Range Accuracy Nonlincarity Stability vs Ambient Temperature 3B14 1000 Plaunum RTD 2 or 3 wire 0 00385 10 SmA 4 20mA or 0 20mA Ry to 8500 0 3 0 1 span 0 05 span 3815 1000 PlatinumRTD 4 wire a 0 00385 Voltage Output Zero 0 005 C C Span 0 002596 reading C Current Output w r t Voltage Output Zero 0 002596 span C Span 0 002596 2 Lead Resistance Effect 0 02 0 0 00001 C Sensor Excitation Current 0 25mA 2 Normal Made Rejection 50Hzor 60Hz 60dB la Differential Input Protection 130V rms cont Voltage Output Protection Continuous Short to Ground Current Output Protection 130V rms cont Zeroand Span Adjustment 5 of span Response Time to 90 Span 0 2sec Input Resistance 100 Input Bias
53. with nonfactory UN dversely affect the safe use of the system VI CONCLUSION 0 The apparatus described in Section 1 2 meets Fa Approval is effective when the Approval Agreement is Factory Mutual this approval and is on file at Mutual requirements igned and returned to VII DOCUMENTATION FILE The following documentation is applicab Factory Mutual No changes of any n ture shall be made unless notice of the proposed change has been given and written authorization obtained from Factorv Mutual The Approved Product Revision Report FMRC Form 797 shall he forwarded to Factory Mutual as noti of proposed changes Document No Revision Title 03 0952800 A O 3B Series Nonicendive Installation Diagram 75 1123200 A 3B Series FM Approval 02 0951500 9 Schematic Drawing Model 3810 02 0951600 Schematic Drawing Model 3811 02 0951700 Schematic Drawing Model 3812 02 0951 800 Schematic Drawing Model 3813 02 0951900 2 Co F Schematic Drawing Model 3814 02 095200 F Schematic Drawing Model 3815 02 0951200 lt Schematic Drawing Model 3815 02 095 D Schematic Drawing Model 3B19 02 09523 Schematic Drawing Model 3B30 02 0952400 Schematic Drawing Model 3831 02 0952500 Schematic Drawing Model 3832 02 1006100 B Schematic Drawing Model 3834 02 0952600 D Schematic Drawing Model 3B37 02 0952700 B Schematic Drawing Model 3B39 02 0951300 B Schematic Diag Manifold Tvoe 3 Board
54. 0 20mA range typical minimum output current is 3B43 3844 1Vto50V 50Vto550V 550V mms continuous a a a 250kN IM 5nA 3nA t X P 5 T gt Accuracy spec includes the combined effects of repeatability hysteresis ripple and linearity Does not include sensor signal source error Custom calibration may be accomplished with custom ranging card 1310 Bandwidth represents response to a change in amplitude 3 24V dc power only needed for driving the current output at up to 8500 If only voltage output used or current output load of 4000 or is desired 15V al that is required Specifications same as 3842 Specifications subject to change without notice ORDERING INFORMATION Model Input Range Number Low Level 20mV IV rms Externally Programmable 3B42 00 0 S0mV rms 3B42 01 0 100mV rms 3B42 02 Volt ac 1V 50V rms Externally Programmable 3B43 00 0 10V rms 3B43 01 Volt ac 50V 550V rms Externally Programmable 3B44 00 0 150V rms 3B44 01 0 250 rms 3B44 02 The difference between these three models is in the input scaling The scaling is done before the zero suppression or gain so that the maximum value presented to the rectifier 1s IV rms The signal is processed the same from this point on in each of the three models R4B is d
55. 0K ohms 3 5 Nonincendive circuit field wiring A g parameters for Terminals 1 erminal l of TB2 TB32 even 3 5 1 Nonincendive circuit fiel and 2 of odd numbered onl numbered only are as follows Voc 30 V 50 mH Isc 30 mA 0 2 ufd 3 5 2 m32 even circuit field wiring parameters for Terminals 2 3 and 4 of TB2 TB32 even ber only Vmax ON S rues 9 3 5 3 endive circuit field wiring parameters for all pins Connector Pl xcept when 3819 or 3839 output modules are used La 300 mH 10 mA Ca 1 Nonincendive circuit field wiring parameters for all pins on and P2 using 3 19 or 3839 output modules 30 V Li 30 mA Ci Vmax Imax 0 0 il 3 6 Electrical Utilization Examination 3 6 1 Power supplies ACI300 and 1301 representative of the power supplies described in Paragraph 2 4 were tested under fault conditions by separately shorting each DC output Under these conditions the maximum temperature measured on the case was 75 Referenced to 409C FACTORY MUTUAL RESEARCH CORPORATION OK5A8 AX Page 5 4 3 Marking on the individual plug in modules displays the following information a Model number b Manufacturer s name c Input and output parameters V REMARKS 5 1 Installation use and maintenance should be in accordance C manufacturer s documents and the National Electrical Code 5 2 Tampering or replacement
56. 0V output instead of a 0 to 10V output Iz should be adjusted for a Full Scale input in step 2 CUSTOM CALIBRATION A powerful custom ranging capability is provided with a plug on ranging card AC1310 If a special gain is desired it 10V or 3 33V DC Protected Excilation Pass Filter If Used Figure 2 1 7 1 3B18 Functional Block Diagram can be provided by ordering the externally programmable version of the desired module and the AC1310 which houses a user supplied resistor that determines the span of the new range If desired the 20kHz bandwidth can be reduced with user supplied capacitors installed in the AC1310 A special range can also be factory configured Consult the factory for details The basic transfer function of the 3B18 1s Vo G x Vin Where Vo Output Voltage G Gain Vin Voltage There is no provision for zero suppression beyond the 5 available with the zero potentiometers GAIN SETTING RELATION With the AC1310 the gain G is set by R3A which is determined from the following 3B18 200kQ G Gain G is a ratio of the change of output to the input change that produced it If there is to be no bandwidth reduction and should be left open The gain setting resistor should be installed as indicated in Figure 2 1 7 2 R3A GAIN SELECTION GAIN SELECTION AND ONLY BANDWIDTH REDUCTION R Open Filter Capacitor R2 Open Open Gain Resistor Gain Resistor
57. 1 accuracy when calibrated RTD Models 3B14 3B15 3B34 and Model 3B17 have a linearization conformity error of 0 05 Models 3B13 3B14 3B15 3B16 and 3B17 cach have the common mode voltage determined by the internal excitation circuitry Only applies to units with 3Hz bandwidth Models 3B18 3B40 3 4 have a CMR of 100dB Only applies to units with 3Hz bandwidth Includes excitation circuitry for models 3B13 3 14 3B15 3B16 3B17 3B18 3B34 wide range of zero suppression and custom calibration may be accomplished with a custom ranging card AC1310 Model 3B17 has a gain adjustment range of 256 1 and an output referred zero suppression range of SV I Model 3B18 has a 20kHz bandwidth models 3B40 and 3B41 havea 10kHz bandwidth model 3B17 has a 100Hz bandwidth 11 24V dc power is only needed for driving the current output at up to 8502 If only voltage output is used or a current output load of 4002 or less is desired 15V is all that is required Specifications same as isolated modules Specifications subject to change without notice If a special input range is desired it can be provided with the externally programmable version of the desired module the plug on ranging card and user supplied resistors See the discussion of the module of interest within the User s Manual for further details Each input module has two user programmable jumper options One option allows the user
58. 1 330 or surface mount AC1331 AC1332 AC1333 option may be used DRILL AND TAP FOR 6 32 SCREW FOUR LOCATIONS Figure 3 4 6 Interface Boards Surface Mount Drill Template CHAPTER 4 OPERATION This section discusses the various options available to the user with the 3B Series Subsystem These features must be understood to assure that each system is properly configured 4 1 4 1 1 BACKPLANE JUMPER OPTIONS Each backplane has a power supply jumper option that must be addressed This jumper marked W4 provides the capability of tying the 15V power supply common to the 24 power supply common If the 24V power supply is used its common must be tied to the 15V common All backplanes are shipped with this jumper installed If the two commons are connected externally W4 should be disconnected on the backplane to help prevent ground loops Each backplane is configured with W2 installed for external voltage sensing See Figure 5 1 This allows the 3B Series Subsystem to be used with Analog Devices RTI boards measuring in a pseudo differential mode to provide higher noise rejection In this mode pin 25 of connectors and P2 is used as a common point for all voltage outputs The common pins on and P2 See Figure 2 3 2 are connected to the 15V power supply common on the 3B Series backplane and may be used as signal common in a single ended measurement system Optionally W1 and W3 can be
59. 1 year from the date of shipment The Customer shall provide notice to Analog Devices of each such defect within one week after the Customer s discovery of such defect The sole obligation and liability of Analog Devices under this warranty shall be to repair or replace at its option without cost to the Customer the product or part which is so defective and as to which such notice is given Upon request by Analog Devices the product or part claimed to be defective shall immediately be returned at the Customer s expense to Analog Devices Replaced or repaired products or parts will be shipped to the Customer at the expense of Analog Devices There shall be no warranty or liability for any products or parts which have been subject to misuse accident negli gence failure of electric power or modification by the Customer without Analog Devices approval Final determina tion of warranty eligibility shall be made by Analog Devices If a warranty claim is considered invalid for any reason the Customer will be charged for services performed and expenses incurred by Analog Devices in handling and shipping the returned item As to replacement parts supplied or repairs made during the original warranty period the warranty period of the replacement or repaired part shall terminate with the termination of the warranty period with respect to the original product or part THE FOREGOING WARRANTY CONSTITUTES ANALOG DEVICES SOLE LIABILITY AND THE CUSTOMER S
60. 1330 includes a two piece metal device that js designed for mounting the 3B Series Subsystem in a 19 rack The bottom plate has threaded inserts for mounting each of the three backplanes using the four screws 6 32 x 1 long that are shipped with each backplane The top piece provides a rigid module holddown and is secured to the bottom piece with two quarter turn fasteners Figure 3 1 1 provides the location of the mounting holes on the bottom plate Figure 3 1 2 is an assembly drawing for the AC1330 option The backplane is readily fitted to the base plate by sliding it in from the side under the protruding metal used for stiffening If a power supply is to be secured from the back of the backplane it should be secured to the backplane before the backplane 1s mounted to the AC1330 If an interface board i e AC1320 is to be mounted on the AC1330 it should be connected before the AC1330 is placed in a rack 3 1 OPTIONAL OPTIONAL 3801 CARD ON BACK 3B02 SURFACE AC1330 MODULE RETAINING BAR i i 1330 RACKMOUNT i l ADAPTER CARD Optional 5 125 3B SERIES BACKPLANE REF 13 02 Penn DES END VIEW Figure 3 1 2 Rack Mount Assembly 3 2 3B SERIES SURFACE MOUNT KITS 1331 AC1332 AC1333 The AC1331 AC1322 and AC1333 are surface mount kits that are designed for the sixteen 3 01 eight 3B02 and four 3B03 channel backplanes respectively These accessories allow for easy panel an
61. 14 3B15 3B34 00 3B34 N 00 Vo Rz x 0 25mA Gy 3B34 C 00 Vo Retp ZE R2 x x Gy where Gy a 1 for 3B14 and 15 and Gy TA 2 for 3B34 1 1 APPENDIX 2 1 ERROR CONTRIBUTIONS The tolerance of the resistor chosen for zero suppression and the mismatch of the current sources typically 0 2 define the error introduced with zero suppression As an example if when using the 3B34 00 the low end of a range is to be 100 C which gives Rz 175 840 from standard tables the use of a 1 tolerance resistor will result in a total possible error of 1 2 2 10 This error is seen at the module input independent of gain The range of the module s voltage output zero adjust is at least 5 0 of the output span Thus the 2 10 input offset in the example above can be adjusted to zero for any output span greater than 420 approximately 110 C If a smaller output span is desired it will be necessary to use a more accurate resistor at R to guarantee that the offset can be zeroed The tolerance of the gain setting resistor affects the accuracy of the selected gain directly Since the modules SPAN ADJUST have at least 5 adjustment range the use of 1 tolerance resistors for Ry will be sufficient APPENDIX A2 2 TEMPERATURE EFFECTS The temperature drift of the zero suppression resistor Rz directly affects the module s input offset drift Thus if a SOppm C resistor is used the drift should
62. 2 3 13 Custom Ranging 6 35 6 35 A Vz should always go in location A Figure 2 1 3 3 3B13 Zero Suppression Resistors LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed For the 3B13 the maximum input at either the HI or LO input terminal is 6 6V with respect to output system common which implies a 3 3mA current through the 2 resistor The range of the modules voltage output adjustment is at least 0 5V at the module output and can therefore correct any error less than 0 5V Gain 2501 A Gain with the 2kQ external resistor If possible the resistors used should be 1 tolerance 10 See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card With the AD590 there is 273 K of zero suppression for any range beginning at 0 This large amount of zero suppression limits the amount of gain that can be taken so tha in general a practical temperature range may be 100 C 2 10 2 1 4 MODELS 3 14 AND 3 15 FEATURES Accepts RTD Inputs Linearized Outputs Sensor Excitation Provided Low Conformity Error Low Lead Resistance Effect FUNCTIONAL DESCRIPTION The 3B14 and 3B15 are designed to accept a platinum RTD Resistance Temperature Detector input from the input screw terminals The 3B14 accepts inputs from 2 or 3 wire RTDs while the 3B15 is specif
63. 2 3B16 Custom Ranging ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 6 35 and 6 35 through the use of R and R and is determined from the following relations R Vz 6 35V Ry with the sign of Vz determined by the choice of location A positive or location B negative for R4 see Figure 2 1 5 3 total resistance of R3 should be approximately 2 13 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs Outputs Maximum Current Output Range Accuracy Nonlinearity Stability vs Ambient Temperature Voltage Output Zero Span Current Output w r t Voltage Output Zero Bridge Excitation Bridge Resistance Range Normal Mode Rejection 50Hz or 60Hz Differential Input Protection Voltage put Protection Current put Protection Zero and Span Adjustment Range Response Time to 90 Span Input Resistance Input Bias Current Input Noise Output Noise Band width Power Supplies 15V Input Supplies Range Rated Operation Supply Rejection Supply Current 24V Loop Supply Range Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Conforms to MIL Spec 202 RFI Susceptibility NOTES 3B16 61 3mV V 10V 5 4 20mA 0 20 0108500 0 31 0 1 span 0 01 1
64. 2631 4 3 2 51007 9 30 77 INSTALLATION DIAGRAM A CODE IDENT N DwG NO REV B 24355 03 0952800 wove 3 1 gt THIS DRAWINC IS THE PROPERTY OF ANALOG OE VICES INC li is otto be reproduced copi amp d in whole or In pari or used for fures ahirsg to others or foi othe purpose detrimental interests of Analog DOavicea The equipment thoen hereon may be by patenis aened of Analog Oevicasn NEXT ASSY USED ON APPLICATION gt gt APPENDIX E THE 3B SERIES SUBSYSTEM COMMONLY ASKED QUESTIONS Is the 4 to 20mA output of the the 3B39 isolated from loop power Yes the current output is isolated from the input and from the loop power On the 3B system where do I get the 24V for current output Up to 4000 max load per module can be supplied from the 15V power supply mounted on the backplane within the power supply current output specification This is obtained by strapping pins 1 and 4 on P3 Or the 24V can be supplied externally through P3 see page 4 6 Are the outputs from a 3B37 thermocouple module linearized No A common practice is to use a poly statement via software in the user s system The transfer function of the 3B37 is in the 3B Users Manual A 3B47 thermocouple module does provide a linearized output How can I isolate an input signal and also isolate the output from the power supply gro
65. 3B37 the current input models 3B12 3B13 3B32 and the ac input models 3B42 3B43 3B44 For the 3B37 the input temperature must be converted to a millivolt signal from standard tables For the current input devices the input current is converted to a voltage with an external sensing resistor For the ac input devices a scale factor must be considered The 3B47 cannot be externally custom ranged because of the complexity of the circuitry 3B47 CUSTOM be factory configured to satisfy a special range The transfer function for the frequency input models 3B45 3B46 is Vo Gx FEm Fz Where Vo Output Voltage G V Hz Fin Input Voltage Fz ZeroSuppression Voltage GAIN SETTING RELATIONS With the AC1310 the gain is set by R3A 3B18 which forms part of an internal divider and is determined from the following Models 3B10 3B12 3B13 3B16 3B1l 3B30 3B32 3B37 3B31 Relations ER Ri Models 3B18 3B40 3B41 Relations R3A _ R A OK 4 Models 3B45 3B46 Relations Gx1 18x 109 Gx 2 60 x 107 1 For the ac input modules the gain is set by and is used to control the scaling of input in each of these three models while R4B determines the gain from the rectifier on R is determined from the following relations 3B42 3B43 3B44 _ 20kQ _ 20kQ _ 20kQ ON S UE E KV KV KV Where V av
66. 42 3B43 and 3B44 Custom Ranging SPECIFICATIONS typical 25 C and 15V 24V dc power Model 3B42 Inputs 0Hz 400Hz 20mV to 1V Outputs 0 10V 5mA 4 20mA or 0 20mA GR 0 8500 Accuracy 0 5 span Stability vs Ambient Temperature Voltage Output Zero 0 005 span C Span 0 005 reading Current Ourput wrt Voltage Output Zero 0 0025 span C Span x 0 002595 reading C Common Mode Voltage Input to Output 1500V peak max Common Mode Rejection 50Hz or 60Hz source unbalance 100dB Differential Input Protection 220V mms continuous Vcltagc Output Protection Continuous Short to Ground Current Output Protection 130V rms continuous Zero and Span Adjustment Range 5 of span Bandwidth 3Hz Response Time to 90 Span 0 2 sec Input Transient Protection Meets IEEE ST D 472 SWC Input Resistance 100 1 Input Bias Current InA Output Noise 50 rms on IOOkHz Bandwidth Power Supplies 15V Input Supplies Range Rated Operation x 11 5V to 16 5V Supply Rejection x 0 0196 span V Supply Current l mA 10mA 24V Loop Supply 12V to WV Supply Rejection 0 002 span V Supply Current 27m at FS Size 3 1507 x 0 775 x 3 395 Environmental Temperature Range Rated Performance 25 C to 85 C Storage Temperature Range 55 to 85 C Relauve Humidity Conforms to MIL Spec 202 0 to 95 60 C Noncondensing RFI Susceptibility 0 5 span error SW 400M Hz G 3 feet NOTES
67. 46 Other ranges will have response times in between these extremes Model Range Response Time 3B45 0 25Hz 1 6sec 3B45 0 1 1kHz 0 6sec 3B46 0 520Hz 0 07sec 3B46 0 25 2 0 03sec LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits to be observed The 3B46 can accept ranges between 25kHz and 50kHz with a gradual decrease in linearity 0 to 30kHz range has 0 02 nonlinearity 0 40kHz has 0 12 nonlinearity and a 0 50 2 range has 0 5 nonlinearity The 3B45 and 3B46 offer input protection up to 220V and will operate normally up to that value However the user may want to externally attenuate large signals to reduce the noise level below the available hysteresis The range of the module s output adjustment is at least 0 5V at the module output and can therefore correct any error of less than 0 5V Gain If possible the resistors should be 1 tolerance 10ppm See Appendix A for a detailed discussion of limits error contributions and tem perature effects of the ranging card 2 30 2 1 14 MODEL 3B47 FEATURES Accepts J K T E R S or B Thermocouple Inputs Provides Linearized 0 10V Output Reliable Transformer Isolation 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC Internal Cold Junction Compensation Open Thermocouple Detection FUNCTIONAL DESCRIPTION The 3B47 accepts its signal from type J K T E R S and B thermocoupl
68. A step 2 and 20mA 0 020mA step 3 a typical minimum output current 15 with 0 20mA operation GENERAL OUTPUT MODULE SPECIFICATIONS typical 25 and 15V 24V dc power Model 3B39 Isolated 3B19 Nonisolated Inputs to IOV 10 Outputs 4 20mA or 0 20mA Ri 0108500 0 196 span Nonlinearity 0 01 Stability vs Ambient Temperature Zero 0 0025 span C Span 0 002 reading C x Common Mode Voltage Output to Input and Power Supply 1500V pk max N A Common Mode Rejection 90dB N A Normal Mode Output Protection 220V rms Continuous 130V rms Continuous Zero and Span Adjustment Range 5 of span Output Transient Protection Meets IEEE STD 472 SWC N A Input Resistance 10k Power Supply 15Vdc 24V dc Maximum Input Voltage Without Damage 20V Size 3 150 x 0 775 x 3 395 Environmental Temperature Range Rated Performance 25 Cto 85 C Storage Temperature Range 55 C to 85 C Relative Humidity Conforms to MIL Spec 202 95 4 60 C noncondensing RFI Susceptibility 0 5 spanerror SW 400MHz 3 ft NOTES Accuracy spec includes combined effects of repeatability hysteresis and linearity 2 24N dc supply is only needed for driving loads of up to 8500 15V dc be used for driving a 4000 maximum load Specifications same as 3B39 Specifications subject to change without notice OUTPUT CONNECTOR INPUT CONNEC
69. AC1307 AC1302 AC1301 15V COM 15V COM LO GND AC POWER SUPPLY AC POWER SUPPLY EXTERNAL DC POWER CONNECTIONS CONNECTIONS DC POWER SUPPLY CONNECTIONS CONNECTIONS Figure 2 4 1 Power Supply Connections POWER SUPPLY SPECIFICATIONS Model ACI300 1301 AC1302 1307 Input Voltage 105 125V ac 50Hz to 400Hz 105 125V ac 50Hz to 400Hz 22 3V 26 4V 105 125V ac SOHz to 400Hz 205 240V ac 50Hz to 400Hz AC1300E 205 240V ac 50Hz to 400Hz AC1301E 205 240V ac 50Hz to 400Hz AC1307E 90 110V ac 5 2 to 400Hz AC1300F 90 110V ac 50Hz to 400Hz AC1301F 220 260V ac 5 2 to 400Hz AC1300H 220 260V ac 50 2 to 400Hz AC1301H Output Voltage 15V 15V 15 15V 15V 24V Output Current 200mA 350mA 190mA 800mA 225mA 350mA Operating Temperature 25 C to 71 25 to 71 C 25 C to 71 25 Cto 71 Storage Temperature 25 Cto 85 25 85 C 40 C to 100 C 25 85 C Dimensions inches 3 5 x 2 5 1 25 3 5 x 2 5 x 1 62 2 0 x 2 0 x 0 38 4 0 2 8 x 3 4 24V output is unregulated CHAPTER 3 INSTALLATION The 3B Series Signal Conditioning I O Subsystem is designed to be installed in any convenient location suitable for general purpose electronic equipment Operating ambient temperature should be within 25 C to 85 C 13 F to 185 F for satisfactory performance of the complete system If the equipment 1S goin
70. ANALOG DEVICES USER S MANUAL The 3B Series Signal Conditioning I O Subsystem AC1346 Three Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Analog Devices Inc Tel 617 329 4700 Errata Agency Certification 3B series products Effective 7 01 2009 ADI will no longer carry the Factory Mutual FM approval Certification for the 3B series of products All other certifications for the 3B series products will remain in place The decision to remove the FM approval Certification is an effort to control rising costs Our decision to remove the FM approval Certification is not a result of any changes to these products USER S MANUAL 3B SERIES Copyright 1986 Analog Devices Inc One Technology Way P O Box 9106 Norwood Massachusetts 02062 9106 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical photocopying recoding or other wise without the prior written permission of Analog Devices Inc Printed in U S A REVISION RECORD Publication E762d 5 1 87 Revision Description 4 0 Released 1 87 4 01 Modified 3B45 46 Gain setting Relation 4 02 Corrected 3B17 Calibration calibration section 2 13 ANALOG DEVICES STATEMENT OF WARRANTY Analog Devices warrants that the Products furnished under this Agreement will be free from material defects in workmanship for a period of
71. Acquisition and Control Systems OUTPUT MODULE General Description Each output module accepts a high level analog signal from the Voltage I O Connector and provides a current output on the output screw terminals The output modules can be powered from an external 24V with a load of up to 8500 If desired 15V can be used to power the output modules with a smaller load up to 4000 Each output module features high accuracy of 0 196 If isolation is required the 3B39 provides 1500V peak of common mode voltage isola protection The transfer function provided by each output module is Input 0 to 10V 10 Output 4 to 20mA 0 20mA Figure 2 2 1 shows a functional diagram for the model 3B39 isolated voltage to current converter Each unit is plugged into a 3B Series backplane which provides the power for each module The input signal drives a voltage to current converter through the isolation barrier Transformer coupling is used to achieve stable galvanic isolation The current output can be adjusted over a 5 span range for zero and span with front panel accessible potentiometers Output protection of up to 220V 130V for the 3B19 is provided for the current outputs Model 3B39 has been specifically designed for high accuracy applications in process control and monitoring systems to offer complete galvanic isolation and protection against damage from transients and fault voltage in transmitting information between
72. B01 3B03 3B01 3B03 AC1323 3B01 3B03 1321 1323 AC1325 3B01 3B03 1320 1325 1321 1323 AC1325 AC1320 AC1325 3B01 3B03 3B01 3B03 3B01 3B03 Used With 1321 1323 AC1325 3B01 3B03 AC1320 AC1325 1320 AC1325 1321 1323 AC1325 AC1325 AC1325 AC1325 AC1325 3B01 03 Table 4 2 1 2 Series Cables and Connectors 4 2 3 UNIVERSAL INTERFACE BOARDS Two universal interface boards are available to help satisfy any interconnection The AC1324 accepts the 26 pin connector from the 3B Series Backplanes and provides 26 screw terminals for interconnecting to any analog I O subsystem This interface board might be used with programmable controllers and is diagrammed in Figure 4 2 2 1 OUTLINE DIMENSION Dimensions shown in inches and mm MOUNTING TRACK 0 145 3 68 MAX LUG ACCESS AC1324 ASSEMBLY NO 2 56 TERMINAL SCREW 2 V di 7 Em El banaai fe ee cee e m e n mild d Figure 4 2 2 1 AC1324 The AC1324 can be mounted in snap track if desired or could be mounted to the back of the AC1330 Rack Mount Kit Standoffs are included with the AC1324 and should be used if the AC1324 is to be mounted on the back of the AC1330 Rack Mounted Kit The AC1325 accepts up to two 26 pin connectors from 3B Series backplanes and has four patterns of holes that accommodate flat cable connectors of up to 50 pins each The AC1325
73. C1310 The required capacitors and are determined from the following relations 8 44 F Fc Note For values of C below 3nF 4 2 reduce by 320pF and by 160pF where is the desired cutoff frequency Bipolar capacitors capable of withstanding 10V should used The space limitations of the AC1310 must be considered when choosing the required capacitors These capacitors are to be installed in the positions designated as and respectively The AC1310 can be used to reduce the bandwidth in factory ranged units Model 3B37 and 3B47 requires an additional resistor to set the cold junction compensation for the appropriate thermocouple type These values are defined in Section 2 1 9 3B37 and Section 2 1 12 3B47 A standard 3B45 or 3B46 is shipped with zero hysteresis since a jumper is installed on the range carrier pins If the jumper is removed there will be nominally 4V 20 of hysteresis If less hysteresis is desired it can be accomplished with the following equation 3B45 3B46 10 x Vy 10 x 4 where is the desired hysteresis be set for any value between 0 and 4V witha 2096 tolerance APPENDIX A1 1 ERROR CONTRIBUTIONS The tolerance of the references typically better than 2 will directly affect all nonzero values of Vz The contribution of the resistors used will be the total tolerance error of the two resistors multip
74. Current 3nA Input Noise 0 2 rms at 10 2 bandwidth Output Noise 50 rms 100kHz band width Bandwidth 3H2 3dB Power Supplies 15V Input Supplies Range Rated Operation 11 5V 16 5 V Supply Rejection 0 01 span V Supply Current 20mA 24V Loop Supply Range 12V to 30V Supply Rejection 0 0002 span V Supply Current 27mA at FS Size 3 150 x 0 775 x 3 395 Environmental Temperature Range Rated Performance 25 85 C Storage Temperature Range 55 to 85 C Relative Humidity Conforms to MIL 0 to 95 60 Spec 202 noncondensing RFI Sesceptibility 0 5 span error SW 400MHz a 3 ft NOTES Fora0 20mA range a typical minimum output current is 10 Accuracy spec includes ihe combined effects of repeatability hysteresis and linearity Does not include sensor or signal source error Includes excitation circuitry wide range of zero suppression and cusiom calibration may be accomplished with a custom ranging card AC1310 3 24V dc power is only reeded for driving the current output at up to 85002 If only voltage output is used or a current output load of 40011 or less is desired 15V is all that isrequired Specifications same as 3B 14 Specifications subject to change without notice ORDERING INFORMATION 2or3WireRTD 4WireRTD Range in 0 00385 0 00385 Externally Programmable 3B14 00 3B15 00
75. F where is the desired cutoff frequency Bipolar capacitors capable of withstanding 10V should be used The space limitations of the AC1310 must be considered when choosing the required capacitors These capacitors are to be installed in the positions designated as R4A and respectively as indicated in Figure 2 1 7 2 The AC1310 can be used to reduce the bandwidth in factory ranged units EXCITATION VOLTAGE SELECTION The excitation voltage is selected by dip switches accessible behind the sliding door on the front of the module just below the zero and span trim potentiometers The switch settings for the excitation voltage are indicated in Table 2 1 7 1 No other combinations of switch settings are useful When the excitation terminals are open circuited and the 3 33V excitation voltage is selected the actual terminal voltage will rise to over 8V This is not a harmful effect but must be considered when the product is being tested A load as small as 0 25mA will bring the voltage down to its specified value Excitation Switch Switch Voltage 1 2 10 0V OFF ON 3 33V ON OFF Table 2 1 7 1 3B18 Excitation Voltage Switch Selections LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The allowable input voltage for the 3B18 is 10V The range of the module s voltage output adjustment 1 at least 0 5V at the module output and can
76. Ln accord e With Drawing 03 0952800 Rev A and will appear in the Approval Guide 1 1 2 03 0952800 See Dwg 03 0952800 for nonincendive circuit field wiring parameters Signal Conditioning Subsystem Models 3801 3802 3803 II DESCRIPTION 2 1 The attached documents describe the major functions and operation of the signal conditioning subsystem The manufacturer has made available all necessary component information system specification and test procedures which have been examined Installation and operation manuals are available which thoroughly describe each major assembly initial installation testing periodic adjustments and trouble shooting techniques FACTORY MUTUAL RESEARCH CORPORATION 5 8 Page 3 3 3 There are no relays switches or contacts in any of the plug in modules power supplies or backplane of the 3B Series Subsystem Therefore no arcing or sparking contacts 3 4 Modules 3830 3831 3832 3834 and 3837 each contain two small signal isolation transformers The maximum inductance was measured as 0 9H The circuits using these transformers were examined to determine if any hazardous stored energy could reach the nonincendive circuit field wiring terminals under normal conditions Analysis and tests determined that the energy was prevented from reaching these terminals by the following components Component Type R46 2 2M ohms R47 20K ohms R48 LOOK ohms RA9 LOOK ohms R28 47
77. Low Conformity Error Low Lead Resistance Effect FUNCTIONAL DESCRIPTION The 3B34 provides 3 wire lead resistance compensation and can be connected to 2 3 or 4 wire 1000 platinum RTDs Resistance Temperature Detectors 2 or 3 wire 100 copper RTDs and 2 3 or 4 wire 1200 nickel RTDS The automatic lead wire compensation eliminates the effect of lead resistance from 3 wire sensors with an accuracy of 0 02 Platinum and nickel RTD signals are internally linearized Copper RTDs are linear devices Figure 2 1 9 1 shows a functional diagram for model 3B34 sensor excitation current is provided for each module 0 25mA for platinum and nickel RTDs 1 0mA for copper RTDs Input protection of up to 220V for the input and excitation circuitry is provided The signal is then amplified linearized and filtered to give the high level voltage output Chopper based amplification is used to assure low drift and excellent long term stability Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equip ment through screw terminal connections FINE CALIBRATION The 3B34 is factory calibrated for a specified range to provide zero and span accuracy of 0 196 of span User accessibl
78. MODELS 3B45 AND 3B46 FEATURES Accepts Frequency Inputs Dual High Level Outputs Voltage 0 to 10V Current 4 20mA 0 20mA High Accuracy 0 1 Low Drift 500 V C Retiable Transformer Isolation 1500V CMV Meets IEEE 472 Transient Protection SWC Input Protection 220V rms Continuous Reliable Pin and Socket Connections FUNCTIONAL DESCRIPTION Mode 3B45 is an isolated frequency input module that is designed to accept full scale frequency signals ranging from 25Hz to 1100Hz Model 3B46 is an isolated frequency input module that is designed to accept full scale frequency signals ranging from 520Hz to 25kHz The 3B45 has a 15ms debounce option that is factory installed for ranges less than 30Hz Both modules have a user selectable threshold of either or 1 6V and an internal pull up resistor for use with switch closure inputs Figure 2 1 13 1 shows a functional block diagram for models 3B45 and 3B46 Input protection of up to 220V rms is provided on the four input screw terminals The input signal is compared to the selected threshold and hysteresis and the comparator s output frequency is converted to a voltage The signal is then amplified and filtered to give the high level voltage output Chopper based amplification is used to assure low drift and excellent long term stability Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adj
79. ORDERING INFORMATION Model Number Excitation and Sensitivity 3B20 00 Externally Programmable 3B20 01 SVrms 3kHz 2mV V GAIN SETTING RELATION The gain G is set by R4B which is determined from the following equation R4B 20k Vrms FS 1 11 VrmsFS VrmsFS Full Scale rms Input EXCITATION VOLTAGE SETTING RELATION With the AC1310 the excitation voltage amplitude is set by R1 which is determined from the relation 10kQ x Vrms 14 33V Vrms Vrms is the desired rms amplitude of the oscillation and it can be selected for any value between 1V and 10V EXCITATION FREQUENCY RELATION The excitation frequency can be set for any value between 1kHz and 10kHz by resistors R2 and R3A These values are determined by the equation below R2 R3A 10 f x 6 3 where f is the desired frequency of oscillation These resistors should be installed as indicated in figure 2 LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The allowable limit for the excitation voltage is 2Vrms to 10Vrms and 1kHz to 10kHz The al lowable input voltage for the 3B20 150mV rms The range of the module s voltage output adjustment is at least 0 5 at the module output and can therefore correct any input offset error of less than 0 5V Gain for the 3B20 1f possible the resistors used should be 1 tolerance 10 See Appendix A for a detailed discussi
80. PTER 2 GENERAL INPUT MODULE SPECIFICATIONS FEATURES Complete Signal Conditioning Function Per Module Wide Variety of Sensor Inputs Thermocouples RTDs Strain Gages Frequency Inputs LVDT AD590 AC2626 Dual High Level Outputs Voltage 0 to 10V or 10V Current 4 20mA 0 20mA Mix and Match Input Capability Sensor Signals mV V 4 20mA 0 20mA High Accuracy 0 1 Low Drift 1pV C Reliable Transformer Isolation 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC Input Protection 130V or 220V rms Continuous Reliable Pin and Socket Connections Low Cost Per Channel 2 1 INPUT MODULE Each input module is a single channel signal conditioner that plugs into a socket on the backplane and accepts its signal from the input screw terminals All input modules provide input protection amplification and filtering of the input signal accuracy of 0 1 low drift of 1pV C and feature two high level analog outputs that are compatible with most process instrumentation The isolated input modules also provide 1500V of isolation The choice of a specific 3B module depends on the type of input signal and also whether an isolated or nonisolated interface is required Input modules are available to accept millivolt volt process current thermocouple RTD strain gage frequency LVDT and AD590 inputs The voltage output of each module is available from the voltage I O connector while the current output is availabl
81. S 3 SNS 16 ____ 5 2 8 RTI 123 i9 19 19 28 4 9 OuTPuT 4 4 204 _ 4 5542 CHANNEL 49 4 SNS 20 4 SNS lt lt 4 SNS 0 26 tO er AQ EXPANSION JS JT JG J8 28 145512 BACK PLANE ps 13 CHANNEL RTI 4232 OUTPUT CHANNEL Figure 5 5 ACI321 Schematic RTI 1240 41 INPUT CHANNEL SNS 5 er PIRA rans ar 13 TEN o a el 23 72 4 8 Sio 16 20 22 26 23 5 0 5 i 35 e 22 4 is 43 75 6 8 _______ gt RTI 241 28 2 n gt CHANNEL 32 4 9 4 9 10 28 EXPANSION 40 12 BACKPLANE qe 1 TED Tid Bp 10 U 5 19 6 MAE BERE 23 HANNEL HA 2 x ees ae n oc MEE en do a Hcc UD o O o 080 E 5 O o s 20 2 s He cod EE EE prem Pd 1 SNS lt J1 2 SNS C2 X ed 3 SNS lt 4 0 a sns Kg ts 14 6 SNs 17 20 lt 22 8 SNS J6 RTI 1242 OUTPUT CHANNEL Figure 5 6 ACI322 Schematic RTI 7414 732 INPUT CHANNEL 0 1 2 3 4 5 6 7 8 9 10 1 ee NEMORE 7 11 13 17 19 E 23 i ak 4 MEER 0 8 10 Ee ey 14 O O MT c qui 20 HU edet ete tein 22
82. SOLE REMEDY WITH RESPECT TO THE PRODUCTS AND IS IN LIEU OF ALL OTHER WARRANTIES LIABILITIES AND REMEDIES EXCEPT AS THUS PROVIDED ANALOG DEVICES DISCLAIMS ALL WARRANTIES EXPRESS OR IM PLIED INCLUDING ANY WARRANTY OF MERCHANTIBILITY OR FITNESS FOR A PARTICULAR PURPOSE CHAPTER 1 INTRODUCTION Scope of the Manual 2 1 1 lel General Description X S iSo e Bi Se Bee 1 1 11 1 FM Approval The 3B Series 4 on Rome Phe hae eB Eee 1 1 2 wipplications a Xo xc USERS wk E aed ee or ee eee 1 1 1 3 Description of 1 2 1 4 Wide Zero Suppression Capability 1 3 1 5 sApplication Example 1 3 1 6 Backplane Functional Description 1 4 1 4 CHAPTER 2 SPECIFICATIONS deck OM 2 1 2 1 General Input Module Specifications 2 1 2 1 4 Models 3B10 and 3 11 Millivolt and Voltage Inputs 2 5 2 1 2 Models 3B12 and 3B32 Current Inputs 06 2 7 2 1 3 Model 3BI3 AD590 Input 4 4 4 4 642 4 cmo ee Peed 2 9 2 1 4 Models 3B14 and 15 RTD Inputs 2 11 2 1 5 Model 3B16 Strain Gage 2 13 71 35 Model EL VDT INDU
83. TOR RETURN 2 1 Il OUT NC 2 1 NC KEY 4 3 KEY NC 4 3 NC LOOPPOWER g 5 424V NC 6 5 NC COMMON RES 8 7 RES BOTTOM VIEW RES 10 9 15 Input Connector V IN 12 11 POWERCOM V IN 14 13 15 BOTTOM VIEW INPUT OUTPUT POWER Output Connector CURRENT OUTPUT CURRENT JUMPER PROGRAMMING OUTPUT PROGRAMMING Nod 0 20mA OPTIONAL RANGING BIPOLAR 4 20mA CARD OUTPUT BOTTOM VIEW NC Jumper Options BOTTOM VIEW Bottom View of Connectors Figure 2 2 2 Output Module Connectors 3 395 86 2 D d Figure 2 2 3 Output Module Dimensions Dimensions shown in inches and mm 2 35 2 3 BACKPLANE FUNCTIONAL DESCRIPTION The 3B Series Signal Conditioning Subsystem consists of a family of backplanes input modules output modules and power supplies The three backplane models 3 01 3802 and 3B03 are designed for 16 8 and 4 channels respectively to offer users the flexibility to match the size of a system to specific applications The sixteen channel backplane can be mounted in a 19 x 5 25 panel space Several mounting options are offered including rack surface and NEMA enclosure mounting The 3B01 backplane can accommodate up to 16 signal conditioning modules Modules can be mixed and matched in the backplane to provide the desired number of channels for a specific function Each channel has four screw terminals for input connections These connections satisfy all transducer inputs and provide transducer excitation when necessary
84. The3B backplane must be mounted inside a standard metal cabinet which fully encloses the modules on all sides The cabinet must be earth grounded at a convenient point and good electrical contact between all side panels must be assured 3 All wiring must be routed through a metal conduit or wire chase flexible or rigid 4 The conduit must be earth grounded and electrically connected to the cabinet 3 Due to the low input levels it is recommended that all input output and power lines be shielded The wiring must be connected as de scribed in Chapter 3 of this manual Flexible Rigid Metal Conduit POWER SUPPLY 3B BACKPLANE Peale la a he oe CONTROL SYSTEM Metal Cabinet General Wiring Configuration CE CERTIFICATION TESTS The 3B Series modules have been tested and certified according to the rigorous electromagnetic constrains of the EN50082 2 and EN50081 2 European Standards The tests performed in accordance with these standards were Radiated RF Immunity 80 MHz to 1000 MHz Pulsed RF Immunity 900 MHz 50 Duty Cycle 200 Hz Conducted RF Immunity 150 KHz to 80 MHz Magnetic Field Immunity 50 Hz Fast Transient Immunity ESD Immunity Contact Method ESD Immunity Air Discharge Method Voltage Surge Immunity Emissions When used according to these installation directions any errors caused by EMI RFI interference will be less than 0 1 of the full scale me
85. able connection would be to an external system ground Figure 4 3 3 This connection will offer the user an additional 1V compliance In most cases the screw terminal connection will be the preferred connection The grounded return of the current output can only be used for the return of one module Two or more modules should not be connected to the same RETURN terminal If several current loops are to be returned with one ground that connection should be made to the common on the Loop power connector The isolated current output module 3B39 should use the RETURN screw terminal since it 1s floating with respect to ground Figure 4 3 3 Optional Current Output Load Connection Connection nonisolated outputs only 4 4 4 4 1 MODULE OPERATION This section covers the options and features that are available with each module The appropriate module section in Chapter 2 should also be reviewed MODULE JUMPERS Each module has two push on jumper options All modules are shipped from the factory configured for 4 20mA output and the current output is proportional to 0 to 10V output If a 0 20mA output is desired and or the current output is to be proportional to a 10V to 10V output these parameters can be readily changed If the push on jumpers are changed the zero and full scale points will shift by approximately 0 2596 of span and will need to be recalibrated to remove this error The details are defined in Section 2 1 for input
86. acy is desired the modules should be calibrated in the actual backplane channel that they will be installed in User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted inde pendently and are noninteractive The following nonrecursive adjustment procedure is recommended 1 Make connections as shown in Figure 2 1 10 1 with 2500 Use a precision millivolt source 2 Measure the ambient temperature of the screw terminal block and determine the millivolt output for the thermocouple type being used from standard millivolt temperature tables This value will be inverted and added to the millivolt span of the thermocouple being simulated 3 Determine the zero and full scale points for the measurement range from standard millivolt tem perature tables and add to the number determined in step 2 Example 0 C 500 C Zero and full scale values Output at ambient temperature Corrected zero and span values OmV to 27 388mV 1 277mV invert sign 1 277 to 26 111mV THERMOCOUPLI INPUT Ear rote 2 dout Figure 2 1 10 1 3B37 Functional Block Diagram 4 Apply Vy for the minimum input signal determined in step 3 adjust Vz for Voyr 0 10mV and Iz for lour 4mA 0 016mA or the measured voltage across 1V 4mV 5 Apply for the maximum inpu
87. and 15V 24V dc power Model Inputs Outputs Accuracy Stability vs Ambient Temperature Voltage Output Zero Span Common Mode Voltage Input to Output Common Mode Rejection 50Hz or 60Hz Source Unbalance Normal Mode Rejection 2 50Hz or 60Hz Differential Input Protection Voltage Output Protection Zeroand Span Adjustment Range Response Time to 90 Span Input Transient Protection Input Resistance Input Bias Current Input Noise Open Input Response Open Input Detection Time Output Noise Bandwidth Cold Junction Compensation Initial Accuracy vs Temperature 5 C to 45 Power Supplies 15V Input Supplies Range Rated Operation Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Conforms to MIL Spec 202 RFI Susceptibility NOTES 3B47 Thermocouple Types J K T E R B Oto 10V SmA See ordering information 0 02 0 0025 reading C 1500V pk max 160dB 60dB 220V rms cont Conunuous Short to Ground 5 of span 0 2sec Meets IEEE STD 472 SWC 15 0 15 0 2 rms at 10Hz bandwidth Upscale lOsec 100 rms 100kHz bandwidth 3Hz 0 5 C 0 5 C 11 5V to 16 5V 0 0196 span V 16 14mA 3 150 x 0 775 x 3 395 25 C to 85 55 85 C 0to 95 2 60 C noncondensing 0 5 span error SW 2 400M Hz 3 ft
88. and span of the new range A special range can also be factory configured Consult the factory for details The basic transfer function of both the 3B12 and 3B32 is Vo G Vin Vz Where Vo Output Voltage G Gain Gyn 1000 V 1000 In InputCurrent Iz ZeroSuppression Current These relations assume the use of the 100 resistor supplied with each module GAIN SETTING RELATION With the AC1310 the gain is set by which forms part of an internal divider and is determined from the following relation 3B12 3B32 10k 40k Neg is a ratio of the change of output to the input change that produced it If there is to be no zero suppression should be a jumper and R should be left open These resistors should be installed as indicated in Figure 2 1 2 2 GAIN SELECTION ONLY GAIN AND ZERO SUPPRESSION R4 Gain Resistor Gain Resistor Rz Jumper Zero Suppression Resistor Zero Suppression Resistor R Open Open Figure 2 1 2 2 3B12 and 3B32 Custom Ranging 2 7 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs Outputs Maximum Current Output Span Accuracy Nonlincarity Stability vs Ambient Temperature Voltage Output Zero Span Current Output w r t Voltage Output Zero Span Common Mode Voltage Input to Output Common Mode Rejection 50Hz or 60Hz Source Unbalance Normal Mode Rejection a 50Hz or 60Hz Differe
89. asure ment range typical 25 C for field strengths up to 10 V M and frequen cies up to 1 GHz 11 21 95
90. ation are available with plug on ranging card 1310 If special input range is desired it can be provided by ordering the externally programmable version of the desired module e g 3B45 00 and the AC1310 which houses user supplied resistors that determine the zero span and hysteresis of the new range A special range can also be factory configured Analog Devices will provide the function when a model CUSTOM is ordered with the desired range The basic transfer function of both the 3B45 and 3B46 is Vo Gx FEm Fz When Vo Output Voltage G Gain V Hz Input Frequency Fz Zero Suppression Frequency GAIN SETTING RELATION With the AC1310 the gain G is set by Ry which 15 determined from the following relation 3B45 3B46 1 20 10 R GX2 65X 10 G is a ratio of the change of output to the input change that produced it If there is to be no zero suppression should be left open If a hysteresis of 4V is acceptable R4A should be left open If no hysteresis is desired install a jumper in R4A The gain resistor R should be installed as indicated in Figure 2 1 13 2 GAIN AND ZERO SUPPRESSION GAIN ZERO SUPPRESSION GAIN SELECTION ANDHYSTERES S A Gain Resistor Gain Resistor Gain Resistor R2 Zero Suppression Jumper Zero Suppression Resistor Open Open Open j Jumper Jumper Hysteresis Resistor Figure 2 1 13 2 3B45 and 3B46 Custom Ranging
91. aximum differential input voltage for normal linear operation is 25V The range of the voltage output adjustment is at least 0 5V at the module output and can therefore correct any input offset error of less than 0 5V Gain for the 3B40 and 5V Gain for the 3B41 If possible the resistors used should be 1 tolerance 10ppm See Appendix A for a detailed discussion of limits error contributions and tem perature effects of the ranging card 2 26 2 1 12 MODELS 3B42 3B43 AND 3B44 FEATURES Accepts 20mV to 550V ac Inputs Dual High Level Outputs Voltage 0 to 10V Current 4 20mA 0 20mA High Accuracy 0 5 Low Drift 50ppm C Reliable Transformer Isolation 1500V CMV CMR 100dB Meets IEEE 472 Transient Protection SWC Input Protection 220V rms Continuous 550V rms for 3B44 Reliable Pin and Socket Connections FUNCTIONAL DESCRIPTION Models 3B42 3B43 and 3B44 are designed to accept ac sine wave input signals Model 3B42 accepts signals ranging from 20mV to 1V rms model 3B43 accepts signals ranging from 1V to 50V rms and model 3B44 accepts inputs ranging from 50V rms to 550V rms Figure 2 1 12 1 shows a functional block diagram for models 3B42 3B43 and 3B44 Input protection of up to 220V rms 550V rms for model 3B44 is provided on the input screw terminals Each module uses an ac averaging technique The input signal is rectified filtered and scaled to give an rms reading for a sine wave input This scaling 1s not acc
92. back with 4 screws and a large diameter washer The clip mounting is diagrammed in Figure 3 3 1 POWER SUPPLY MODULE POWER SUPPLY RETAINING CLIP 3B SERIES BACKPLANE Figure 3 3 1 Power Supply Installation ELECTRICAL CONNECTIONS The wiring discussion is divided into three areas power connections field terminations and user equipment termination Power Connections The 3B Series Subsystem can operate from an ac power supply a dc dc power supply an externally provided 15V and 24 supply If an ac power i e AC1300 AC1301 is used it should be secured to the backplane with the retainer clip or holddown screws as discussed in Section 3 3 The input wiring is connected to TB33 as indicated in Figure 3 4 1 The wiring of the ac power connector is most readily accomplished by removing the two corner screws that secure the yellow safety cover to the connector This enables the cover to be easily removed so that the ac terminals are accessible LO GND Figure 3 4 1 AC Power Connections The AC1340 D power cord can be used with the ac connector and plugged into a standard wall outlet the AC1340 C version is available for the European continental plug If a different cable is used proper wiring practice should be used so that no wiring is exposed It is recommended that the yellow safety cover be reinstalled after the ac power connector is wired so that no ac wiring is exposed If a dc dc converter AC1302 or
93. ble Connector with 3 Cable 1585 6 3BtoRTI 1260 Cable Assembly 1585 7 1262 Cable Assembly 11 to MACSYM 150 Cable Assembly ADIP N Description 1311 20 Pin Female Mating Connector 1312 26 Pin Female Mating Connector AC1313 34 Pin Female Mating Connector 1314 50 Pin Female Mating Connector AC1316 20 Pin Board Mounted Male Connector AC1317 26 Pin Board Mounted Male Connector AC1318 34 Pin Board Mounted Male Connector 1319 50 Pin Board Mounted Male Connector AC1352 6 Pin dc Power Female Mating Connector ADIP N Description AC1342 1000 Current Sense Resistor Spare 1343 2kQ Current Sense Resistor Spare 1344 10 Jumpers Spare AC1345 Individual Module Mounting Kit with CJC Sensor AC1346 3B Series Manual AC1350 Blank Module Includes PC Board Case and Connector 1351 Blank Module Includes Case and Connector only Adapter Boards for Analog Devices RTI Products ADIP N Description AC1320 RTI 1225 26 60 62 Family Adapter Board 1321 1230 31 32 Family Adapter Board Also Supports Analog Input for RTI 1200 RTI 1250 RTI 1260 AIMO3 and AIM100 AC1322 RTI 1240 41 42 43 Family Adapter Board AC1323 RTI 711 24 32 Family Adapter Board IOB120 01 RTI 800 815 Family Adapter Board with Cables A Cable Assembly is defined as a cable with two connectors Used With 3B01 3B03 1320 1325 3B01 3B03 3B01 3B03 3B01 3B03 AC1323 3B01 3B03 1321 1323
94. bsystem is designed to provide an easy and convenient solution to signal conditioning problems in measurement and control applications Some typical uses are in mini and microcomputer based systems standard data acquisition systems programmable controllers analog recorders dedicated control systems and other applications where monitoring and control of temperature pressure flow position and analog signals are required Since each input module features two simultaneous outputs the voltage output can be used to provide an input to a microprocessor based data acquisition and control system while the current output can be used for analog transmission operator interface or an analog backup system Figure 1 2 1 1 a functional diagram of the 3B Series Subsystem CURRENT OUTPUTS EXTERNAL DC PDWER CDNNECTOR er raps OUTPUT MODULE POWER SUPPLY CONI NECTIONS c o o l o 2 ol er 01019 Wma ot 2 ee AC LINE Figure 1 2 1 3B Series System Functional Block Diagram DESCRIPTION OF 3B MODULES The 3B input modules are single channel analog input conditioners that plug into sockets on the backplane The choice of a specific 3B module depends on the type of input signal and also whether an isolated or nonisolated interface is required refer to Table 1 3 1 The choice of the 3B output module depends on whether an isolated or nonisolated process current signal is required Each
95. calibrated for a specified range to provide zero and span accuracy of 0 196 of span User accessible zero and span trim potentiometers providing a 596 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive adjustment procedure is recom mended l Connect model 3B30 3B31 as shown in Figure 2 1 8 1 with Ry 2500 2 Apply Vin 0 volts adjust Vz for 0V 10mV and Iz for Ioyr 4mA 0 016mA or the measured voltage across 1V 4mV 3 Apply Vin Full Scale adjust Vs for Voyt 10V 10mV and IoyT 20mA 0 016mA or the measured voltage across 5V 4mV If a 0 20mA output is desired for a 0 to 10V output adjust Iz for Ioyr 0mA 0 020mA in step 2 and Is for lour 20mA 0 020mA in step 3 A typical minimum output current is 104A with 0 20mA operation If the current output is to be proportional to a 10V to 10V output instead of a 0 to 10V output Iz should be adjusted for a Full Scale input in step 2 OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the externally programmable version of the desired module 1 3B30 00 and the AC1310 which houses user supplie
96. cold junction compensation level This feature allows the user to provide zero suppression of up to and beyond 100 of the input range and provide a wide range of span modification The capability allows the user to map any portion of the input signal to the full output span For example a user who wants to measure temperature with a thermocouple in the range of 800 900 C can use this ranging card for greater system resolution in that 100 C temperature span This tremendous flexibility should satisfy virtually any requirement The resistor values are determined by equations defined for each module See the appropriate data page for each module within the User s Manual for further details Special ranges can also be factory configured Analog Devices will provide the function when a model 3B CUSTOM is ordered with the desired range 1 5 APPLICATION EXAMPLE An example of how the 3B Series Subsystem might be used with an analog I O subsystem in a measurement and control application is diagrammed in Figure 1 5 1 The sensor which could be a thermocouple is connected directly to the input screw terminals The high level voltage output of the input module is compatible with any high level multiplexer or analog to digital converter which converts the data to the digital form that the microprocessor requires The digital output of the microprocessor is connected to a digital to analog converter which provides a high level voltage output The output module c
97. ct Temperature Range 01 through 06 Range in C CF TCType No 100to 760 J 01 148 to 1400 100 to 1350 K 02 148to 2462 100 to 400 T 03 148to 752 Oto 900 E 04 32to 1652 1750 R S 05 32to 3182 1800 B 06 32to 3272 GAIN ZERO SUPPRESSION GAIN SELECTION GAIN AND ZERO AND COLD JUNCTION ONLY SUPPRESSION COMPENSATION Gain Resistor Gain Resistor Gain Resistor Rz Jumper Zero Suppression Resistor Zero Suppression Resistor Zero Suppression Resistor Zero Suppression Resistor Open CJC Resistor Figure 2 1 10 2 3B37 Custom Ranging ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 3 175V and 3 175V through the use of and R and is determined from the following relations V2 3 175V with the sign of Vz determined by the choice of location positive or location B negative for R3 see Figure 2 1 9 3 The total resistance of R R3 should be approximately to avoid taking excessive current from the voltage reference or self heating in the resistors Using 10k as the total value R and are determined from the following relations Vz R 3 175V x 10k R l0kQ 3 175 3 175V 4 Figure 2 1 10 3 3B37 Zero Suppression Resistors COLD JUNCTION COMPENSATION SELECTION The 3B37 incorporates internal cold junction co
98. d NEMA enclosure mounting The AC1331 will mount the 1 in an 18 824 5 375 area The AC1332 will mount the 3B02 in a 12 42 x 5 375 area and the AC1333 will mount the 3B03 in a 9 22 x 5 375 area backplane and appropriate accessory are mounted to any surface by drilling and tapping the appropriate eight holes four 6 32 and four 10 24 If additional rigidity is required on the 3B01 or 3B02 they can also be secured by drilling and tapping additional holes for 6 32 screws to pick up the through standoffs on the center of each backplane Figure 3 2 2 shows the mounting location for each of the three accessories and Figure 3 2 3 shows an assembly drawing for the AC1331 surface mount option Mount the backplane first using four 6 32 x 1 screws provided On 3B01 and 3B02 additional screws may be inserted for additional rigidity Insert a module in the left most position and the right most position Attach the module retaining bar to the two end brackets with the quarter turn fasteners as shown in Figure 3 2 3 Place the holddown assembly over the backplane so that the two modules fit up inside of the module retaining bar Attach the end brackets to the mounting surface using the four 10 24 screws provided and flat washers Remove the module retaining bar and install modules as desired AC1331 AC1332 AC1333 AC1333 AC1332 AC1331 y pra 4 B B B 8 0 600 1 52 ta
99. d resistors that determine the zero and span of the new range special Renglng Card If Used Figure 2 1 8 1 3B30 and 3B31 Functional Block Diagram range can also be factory configured Consult the factory for details The basic transfer function of both the 3B30 and 3B31 is Vo Gx Vm Vz Where Vo Output Voltage G Gain Vin Voltage z ZeroSuppression Voltage GAIN SETTING RELATION With the AC1310 the gain G is set by Rj which forms part of an internal divider and is determined from the following relation 3B30 3B31 40kQ _ 40 G 2 176 02 Gain G is a ratio of the change of output to the input change that produced it Model 3B31 is a 3B30 with a 10x normal mode input attenuator The attenuation is done before the zero suppression or gain which causes a change in these relations If there 15 to be no zero suppression R should be a jumper and should be left open These resistors should be installed as indicated in Figure 2 1 8 2 GAIN SELECTION ONLY GAIN AND ZERO SUPPRESSION Gain Resistor Gain Resistor Jumper Zero Suppression Resistor Zero Suppression Resistor Figure 2 1 8 2 3B30 and 3B31 Custom Ranging 2 19 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs Outputs Maximum Current Output Range Accuracy Nonlinearity Stability vs Ambient Temperature Voltage Output Zero
100. d taking excessive current from the voltage reference or self heating in the resistors For the 3B31 the 31 75V term 15 a function of the 10 X attenuation of the input signal The internal voltage reference is 3 175V and high watt resistors are not required for zero suppression Using 10k as the total value and are determined from the following relations 3B30 3B31 Zz x 100 27 3175 27 31 75V 10 0 10kQ R REF 43 175V 3 175 7 Figure 2 1 8 3 3B30 and 3B31 Zero Suppression Resistors LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed For the 3B30 the maximum differential input voltage for normal linear operation is 1V For the 3B31 the maximum differential input voltage for normal linear operation is 20V The range of the voltage output adjustment is at least 0 5V at the module output and can therefore correct any input offset error of less than 0 5V Gain for the 3B30 and 5V Gain for the 3B31 If possible the resistors used should be 1 tolerance 10ppm See Appendix A for a detailed discussion of limits error contributions and tem perature effects of the ranging card 2 1 9 MODEL 3 34 FEATURES Accepts RTD Inputs Linearized Outputs Sensor Excitation Provided Reliable Transformer Isolation 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC
101. dity Conforms to MIL Spec 20z RFI Suscepubility NOTES 3B17 20mV rms 5V rms 5mA and 4 20mA 0 20mA 8500 40mA 0 1 Span 0 05 Span 0 005 Span C 0 01 Span C 0 0025 0 0025 Reading C iV rms rms 10 1 2 gt 10 gt 15 Up to 20mA rms min lt 0 5 130V rms Continuous Conunuous Short to Ground 130V rms Continuous 5V 256 1 5 of Span 100Hz Sms 00 1 13 to 18V 0 03 Span V 5 max plus LVDT Current 13 5V to 30 0 001 Span V 27m at F S 3 150 x 0 775 x 3 395 25 C to 85 55 C to 85 C 0 to 95 60 C Noncondensing 0 5 Span Error 5W 400mHz 3ft Fora0 20mA rangc a typica mirunium output current is 104A 2 Accuracy spec includes thc combined effects of repeatability hysteresis and lincariiy Does not include sensor error Includes excitation drift Includes excitation circuitry Bandwidth can be set for up to 1 10 the excitation frequency when ordering a 3B17 CUSTOM 6 24V dc power is only needed for driving the current output at up to 85001 If only voltage output is used or a current output load of 400 1 or less is desired 15V isall that is required Tvpical number 15 40mA per module plus 5mA for drive current Supply current requirements for LVDT current 15 75 of che LVDT rmscurrent Specifications subject to change witho
102. dule Input 5 3B10 and 3B11 Function Block Diagram 3B10 and 3B11 Custom Ranging 3B10 and 3B11 Zero Suppression Resistors 3B32 Functional Block Diagram 3B12 and 3B32 Custom Ranging 3B12 and 3B32 Zero Suppression Resistors 3B13 Functional Block Diagram 3BI3 Custom Rangin eet 3B13 Zero Suppression Resistors 3B14 and 3B15 Functional Block Diagram RTD Values Needed for Ranging Models 3B14 and 3B15 3B14 and 3B15 Custom Ranging 3B16 Functional Block Diagram 3Bl6 Custom Ranging 22225 woe WO kA SSeS 3B16 Zero Suppression Resistors 3B17 Functional Block Diagram 3BI7 Custom 3B18 Functional Block Diagram 3B18 Custom 3B30 and 3B31 Functional Block Diagram 3B30 3B31 Custom Ranging 3B30 and 3B31 Zero Suppression Resistor gt G 6 e g gG RTD Values Needed for Ranging Model 3B34 3834 Custom woe doe arce te Bee Stee he A 3B37 Functional Block Diagram 3B37 Custo
103. dules when Linearization is not used The ranging card can be used to create a wide variety of special transfer functions with virtually any type RTD RTDs with a concave down temperature characteristic should be conditioned with the 3B34 00 RTDs with a concave up temperature characteristic should be conditioned with the 3B34 N 00 Any type RTD can be used with nonlinearized custom ranging LIMITS There are practical limits that must be observed when ranging the 3B34 The maximum RTD value in the measurement range of interest must not exceed 10 for the 3B34 00 and 3B34 N 00 or 2 5 for the 3B34 C 00 The range of the voltage output adjustment is at least 0 5V at the module output and can therefore correct any error less than 0 5V Gain If possible the ranging resistors used should be 1 tolerance lOppm while the linearization resistor can be a 50ppm part See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 1 10 MODEL 3B37 FEATURES Accepts J K T E R S or B Thermocouple Inputs Reliable Transformer Isolation 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC Internal Cold Junction Compensation Open Thermocouple Detection FUNCTIONAL DESCRIPTION The 3B37 accepts its signal from type J K T E R S and B thermocouples and provides two high level outputs that are proportional to the input signal Figure 2 1 10 1 shows a functional diagra
104. e zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonre cursive adjustment procedure is recommended i Connect model 3B34 as shown in Figure 2 1 9 1 with 2500 Substitute a resistance standard for the RTD 2 Determine the minimum and maximum resistance values of the RTD from standard resistance temperature tables For example a measurement range of 0 to 100 C for a 1000 platinum RTD corresponds to a resistance range of 100 000 to 138 500 3 Connect the required minimum input resistance standard adjust Vz for Vour 10mV and Iz for 4mA 0 016mA or the measured voltage across Ry 1V 4mV 4 Connect the required maximum input resistance standard adjust Vs for 10V 10mV and Is for 20mA 0 016mA or the measured voltage across Ry 5V 4mV If a 0 20mA output is desired Iz should be adjusted for OmA 0 020mA in step 2 and should be adjusted for 20mA 0 020mA in step 3 A typical minimum output current is l0uA with 0 20mA operation Input CHOPPER Protection DIFF 15 Figure 2 1 9 1 3B34 Functional Block Diagram OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibration are available with a plu
105. e following nonrecursive adjustment procedure is recommended 1 Connect model 3B14 3B15 as shown in Figure 2 1 4 1 with 2500 Substitute a resistance standard for the RTD 2 Determine the minimum and maximum resistance values of the platinum RTD from standard resistance temperature tables For example a measurement range of 0 to 100 C for a 100 platinum RTD corres ponds to a resistance range of 100 000 to 138 500 3 Connect the required minimum input resistance standard adjust Vz for 10mV and Iz for 4mA 0 016mA or the measured voltage across 1V 4 4 Connect the required maximum input resistance standard adjust Vs for 10V 20mV and Is for 20m 0 016mA or the measured voltage across 5V 4mV If a 0 20mA output is desired Iz should be adjusted for Iour 0 020mA in step 2 and Is should be adjusted for 20mA 0 020mA in step 3 A typical minimum output current is 10WA with 0 20m operation OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special TI eii Figure 2 1 4 1 3B 14 and 3B15 Functional Block Diagram input range is desired it can be provided by ordering the externally programmable version of the desired module 1 e 3B 14 00 and the AC1310 which houses user supplied resistors that determine
106. e on the output screw terminals The transfer function provided by each input module is Input specified sensor measurement range Output 0 to 10V dc or 10V 4 20mA nonisolated with respect to voltage output 0 20mA output programmed by a jumper option on the module LOOP V LOOP COM C S un NPUT Jes CHOPPER MAGNETIC 2 o PROTECTION ISOLATION Vour COM 2 9 11 MI T 15V 13 4 JUNCTION PWR COM aD Lr COMPENSATION V 9 CJ SENSOR RANGING 15V CARD IF USED Figure 2 1 1 Model 3B37 Functional Block Diagram O 4 O 2 1 For example Figure 2 1 shows a functional diagram for the Model 3B37 isolated thermocouple signal conditioner The input signal is filtered amplified and has cold junction compensation applied before the isolation barrier Reliable magnetic isolation is used to provide isolation pro tection The outputs of the module are isolated from the input up to 1500V peak and calibrated for 0 to 10 voltage output and 4 20mA current output which corresponds to the specified input span GENERAL INPUT MODULE SPECIFICATIONS typical 25 C and 15V 24V dc power Isolated Nonisolated Model Modules Modules Inputs Per Selection Table Outputs 10 5 10V 2 5mA 4 20mA or 0 20mA Ri 01085002 Accuracy 0 1 span Nonlinearity 0 01 span Stability vs Ambient Temperature Voltage Output Ze
107. e user must manually trim the phase of the demodulator and hope that the phase relationship does not shift with time or temperature The 3B17 uses a unique approach to compensate for these errors The two secondary windings are identified as A and B in Figure 2 1 6 1 with the normal output being A B The function A B is a voltage that is in phase with the secondaries and nearly invariant with the core displacement Since this term is much larger than the quadrature voltage it can be used to drive the demodulator directly The 3B17 generates the A B term by manipulating the A and A B outputs This approach automatically compensates for any phase error between the primary and secondaries of the LVDT and eliminates the need for a phase adjustment It also rejects any residual quadrature voltages automatically The 3B17 is the complete solution for your LVDT needs Protected Precision Oscillator V Loop Loop COM Vout Vout COM Figure 2 1 6 1 3B17 Functional Block Diagram The 3B17 has the flexibility to address the broad array of LVDTs available with its extensive gain and zero adjustment range The AC excitation is limited to a 20mA rms load which sets a lower circuit primary impedance of 50Q for a 1V excitation and 2500 for a 5V excitation If the primary impedance of the LVDT is below 50Q the impedance of the LVDT can be increased by increasing the excitation frequency This excitation capability addresses
108. ectively eeThe 24V output is unregulated Power Cords ADIP N Description Used With AC1340 D 7 ft Domestic Power Cord 3B01 3B02 3B03 AC1340 C 7 ft Continental Power Cord 3B01 3B02 3B03 AC1341 6 ft dc Power Cable 3B01 3B02 3B03 Mounting Kits ADIP N Description Used With AC1330 19 Rack Mount Kit 3B01 3B02 3B03 1331 16 Channel Surface Mount Kit 3B01 AC1332 8 Channel Surface Mount Kit 3B02 AC1333 4 Channel Surface Mount Kit 3B03 INTERCONNECTION ACCESSORIES AC1311 USER AC1314 ES oy es 1320 3801 3802 3803 1325 This diagram depicts how the 3B Series may be interfaced to the user s equipment The AC1315 ribbon cable provides a direct electrical connection to all adapter boards Four adapter boards AC1320 AC1323 are designed for specific Analog Devices RTI boards and two AC1324 AC1325 are designed for universal connections All adapter boards accept either connectors or ribbon cables that can interface with the user s equipment Cables Connectors Miscellaneous ADIP N Description 1315 2 26 Pin Cable Assembly AC1326 3B to RTI 1225 1226 Cable Assembly AC1327 3Bto RTI 711 732 Cable Assembly AC1328 3B to RTI 724 Cable Assembly AC1329 AC1323 to RTI 711 732 Cable Assembly AC1335 to MIO 120 or RTI 800 815 Cable Assembly 1553 50 Pin Cable Connector with 3 Cable 1554 26 Pin Cable Connector with 3 Cable ACISSS 20 Pin Cable Connector with 3 Cable AC1562 34 Pin Ca
109. ency response of custom ranged units if desired These modules can be confi gured at the factory with a 100Hz minimum bandwidth ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 3 175V and 3 175V for the 3 40 and 31 75V to 31 75V for the 3B4I through the use of and and is determined from the following relations 3B40 3 41 T 31 75V E with the sign of Vz determined by the choice of location A positive or location B negative for see Figure 2 1 11 3 The total resistance of R3 should be approximately 10 to avoid taking excessive current from the voltage reference or self heating in the resistors For the 3B41 the 31 75 term is a function of the 10 x attenuation of the input signal The internal voltage reference is 3 175V so standard 100mW resistors are suitable for zero suppression Using 10kQ as the total value Rz and are determined from the following relations 3B40 3B41 R lt x 1050 x 2 3 175V 22 31 75V 10 R 10kQ REF 3 175V 3 175V A PB Figure 2 1 11 3 3B40 and 3B41 Zero Suppression Resistors LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed For the 3B40 the maximum differential input voltage for normal linear operation is 2 5V For the 3B41 the m
110. ent output is to be proportional to a 10V to 10V output instead of a 0 10 output Iz should be adjusted for a 30mV input in step 2 OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the externally programmable version of the desired module 1 3B10 00 and the AC1310 which houses user supplied resistors that determine the zero and span of the new range A special range can also be factory configured Consult the factory for details Figure 2 1 5 1 3B16 Functional Block Diagram The basic transfer function of the 3B16 Vo Gx Vm Vz Where Vo Output Voltage G Gain Vin Input Voltage Vz ZeroSuppression Voltage GAIN SETTING RELATION With the AC1310 the gain G is set which forms part of an internal divider and is determined from the following relation 3B16 10 0 G 1 Gain is ratio of the change of output to the input change that produced it If there is to be no zero suppression should be a jumper should be left open These resistors should be installed as indicated in Figure 2 1 5 2 GAIN SELECTION GAIN AND ZERO ONLY SUPPRESSION Gain Resistor Gain Resistor Jumper Zero Suppression Resistor Zero Suppression Resistor R4 Open Open Figure 2 1 5
111. ero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive adjustment procedure is recom mended 1 Connect model 3B12 3B32 as shown in Figure 2 1 2 1 with 2500 2 4mA adjust Vz for 10 and Iz forIouT 4mA 0 016mA or the measured voltageacrossR IV 4mV 3 Apply 20mA adjust Vs for l0mV and Is forIoy7 20mA 0 016mA or the measured voltage across Ry 5V 4mV If a 0 20mA input is used should be OmA in step 2 If a 0 20mA output is desired Iz should be adjusted for 0mA 0 020mA step 2 and Is should be adjusted for 20mA 0 020mA in step 3 a typical minimum output current is 104A with 0 20mA operation OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the externally programmable version of the desired module 1 e 3B32 00 and the AC1310 which houses user supplied resistors Vil Izero Ranging arol If Used Figure 2 1 2 1 3B32 Functional Block Diagram that determine the zero
112. es and provides a 0 to 10V output The input signal is internally linearized to provide an output which is linear with temperature Figure 2 1 14 1 shows a functional diagram for the model 3B47 Input protection of up to 220V is provided for the input circuitry Cold Junction Compensation with an initial accuracy of 0 5 C is performed in each unit with the external sensor provided on all channels of the 3B Series backplane The signal is amplified and filtered to give the high level voltage output Chopper based amplifi cauon is used to assure low drift and excellent long term stability Transformer coupling is used to achieve stable galvanic isolation between input and output The voltage output can be adjusted over a 5 span range for zero and span with the front panel accessible potentiometers DOWNSCALE OPEN INPUT DETECTION The 3B47 provides upscale open thermocouple detection when used under normal operation Downscale open ther mocouple detection be provided by installing a 220 0 resistor across screw terminals 2 and 4 This resistor could be 0 25W carbon comp and need not be a tight tolerance x 20 The addition of this resistor reverses the input bias current which provides downscale open input detection FINE CALIBRATION The 3B47 15 factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span Cold junction sensors with an initial accuracy of 0 5 C are provided on each backplane cha
113. es over a 25 C to 71 C temperature range If the user wishes to use a 15V supply for current output the 15V can be strapped to the loop power on connector P3 see Figure 4 3 1 With this arrangement the load resistance on current outputs is limited to 400 max If 24V is supplied from an external source a dc dc converter ADI model AC1302 can be used to supply 15V to the backplane The current loop power is provided from the 24V source which must be capable of handiing the desired number of current loop outputs If both 24V and 15V are supplied from an external source the power supply requirements must be satisfied for the desired number of modules 15Vde 15Vdc 24Vde Model Current Current Current 3B10 10mA 10mA 27mA 1 10mA 10mA 27mA 3B12 10mA 10 27mA 3B13 12mA 12mA 27mA 3B14 20mA 20mA 27mA 3B15 20mA 20mA 27mA 3B16 45mA 10mA 27mA 3B17 65mA 65mA 27mA 3B18 50mA 15mA 27mA 3B19 4mA 4mA 27mA 3B30 10mA 10mA 27mA 3B31 10mA 10mA 27mA 3B32 10mA 10mA 27mA 3B34 10mA 10mA 27mA 3B37 12mA 12mA 27mA 3B39 5mA 5mA 35mA 3B40 10mA 10mA 27mA 3 41 10 10 27mA 3B42 10mA 10mA 27mA 3B43 10mA 10mA 27mA 3B44 10mA 10 27mA 3B45 16mA 27mA 3B46 19mA 19mA 27mA 3B47 l6mA 14mA N A number is 40mA per module plus 5mA for LVDT drive current Supply current requirements for L VDT current is 75 of the LVDT rms current Table2 4 1 Module Power Requirements 15V COM AC1300
114. etermined from the following relation which is the same for all models 40 0 10V l GI where G 10V represents the module s output span If there is to be no zero suppression R should be a jumper These resistors should be installed as indicated in Figure 2 121252 ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 0 and 1 23V Since the signal varies from 0 to 1V dc at the amplifier input a zero suppression voltage of 0 to 1V dc corresponds linearly to a 0 10096 of full scale zero suppression The zero suppression resistor Rz is determined from the following relations for all three models 10KO 2 1 23 ViVin R should be installed as indicated in Figure 2 1 12 2 LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The allowable input voltages are 20mV 1V rms for the 3B42 1 50V rms for the 3B43 and 50 550V rms for the 3B44 The range of the modules voltage output adjustment is at least 0 5V at the module output and can therefore correct any input offset error of less than 0 5V Gain for the 3B42 25V Gain for the 3B43 and 275V Gain for the 3B44 If possible the resistors should be a 1 tolerance 10ppm See Appendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 1 13
115. external power is used the wiring is brought to connector P3 This connector is compatible with an AMP mating connector or equivalent see Figure 3 4 2 The AC1341 dc power cord can be used to interface the 3B Series to any external dc power source If a user supplied cable is used proper wiring practice should be employed to ensure that no wiring is exposed Note that if 15V is to be used to supply loop power a jumper should be installed between pins and 4 on the dc power connector see Figure 4 3 1 Power Connector DC Power 1 LOOP V 2 LOOP COM 3 NC 4 15V 5 15VCOM 6 15V BOTTOM VIEW MATING CONNECTOR AMP 202237 1 6 PCS AMP P N 207377 1 1 PC OR EQUIVALENT 1352 Figure 3 4 2 DC Power Connector LI INPUT CONNECTIONS ALL INPUT CONNECTIONS USE 6 32 SCREW TERMINALS COMPATIBLE WITH 14 AWG WIRE OUTPUT CONNECTIONS ALL OUTPUT CONNECTIONS USE 6 32 SCREW TERMINALS COMPATIBLE WITH 14 AWG WIRE Figure 3 4 3 Screw Terminal Connections 3 5 Field Terminations All screw terminal connections are indicated in Figure 3 4 3 Input terminals numbered 1 2 3 and 4 correspond to the markings on each backplane The output connectors each are marked 1 and 2 where represents the current loop out and 2 represents the return Calibration information may be found by referring to the instructions for the appropriate module All input and output connec
116. f the measurement range that is to produce an output of Vut AT is the total temperature range Tur AV is the total output span SPECIFICATIONS typical 25 C and 15V 24V dc power inputs Outputs Maximum Current Output Span Accuracy Nonlinearity Stability vs Ambient Temperature Voltage Output Zero Span Current Output w r t Voltage Output Zero Span Normal Mode Rejection 50Hz or 60Hz Differential Input Protection Voltage Output Protection Current Output Protection Zero and Span Adjustment Range Response Time to 90 S pan input Resistance Input Bias Current Excitation Voltage Input Noise Output Noise Bandwidth Power Supplies 15V Input Supplies Range Rated Operation Supply Rejection Supply Current 24V Loop Supply Range Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Conforms to MIL Spec 202 RFI Susceptibility NOTES 3B13 01 AD590 55 C to 130 C 10V u SmA 4 20mA or 0 20mA 0108500 0 3 0 1 5 0 01 span 0 01 C C 0 002596 reading C 0 0025 span C 0 0025 reading C 60dB 130V rms cont Continuous Short to Ground 130V rms cont 5 of span 0 2sec 100M 3nA 6V 0 24 V rms at 10Hz bandwidth 501 V rms in 100kHz bandwidth 3Hz 3dB 11 5 16 5 0 01 span V
117. for a specified range to provide zero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 596 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive adjustment procedure is recommended 1 Connect model 3B10 3B11 asshownin Figure 2 1 1 1 with 2500 2 Apply Vin Ovolts adjust Vz for Vopr 10mV and Iz for lour 4mA 0 016mA or the measured voltage 55 1 4mV 3 Apply Vin Full Scale adjust 10 and adjust Is for 20mA 0 016mA or the measured voltage across Ry 5V 4mV If a 0 20mA output is desired for a 0 to 10V output adjust Iz for OMA 020mA in Step 2 and for 20mA 020mA in Step 3 A typical minimum output current is with 0 20mA operation If the current output is to be proportional to a 10V to 10V output instead of a 0 to 10V output Iz should be adjusted for a Full Scale input in Step 2 OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range 1s desired it can be provided by ordering the externally programmable version of the desired module 1 3B10 00 and the AC1310 which ho
118. for use with AD590 AC2626 temperature sensors whose output is LpA per degree Kelvin This current is converted to a voltage of 2mV per K by a 2kN sensing resistor supplied with the 3B13 The 3B13 processes this signal exactly as would a 3B10 and the same rules for computing ranging components apply However it may be more con venient to work directly with the endpoint temperatures needed for an application Use the following procedure 1 Convert all temperatures to K To convert from C to K add 273 To convert from F to K multiply by and add 255 2 To convert from R to K multiply by 55 2 Compute the values for the gain setting resistors and the zero suppression resistors and R3A If a to 10V output span is desired the relations are AT 5000 AT Zero Suppression Tyo 3 150 Resistors 10 0 Gain Setting Resistor x 10kN Where T o is the Kelvin temperature that is to read OVourt and is the total temperature from to the temperature that is to read 10Voyr If an output range of other than 0 to 10V is desired the following relations should be used AT 500AV AT Tos AVSVISAT Gain Setting Resistor R x 10kN Zero Suppression R x 3 150 Resistors R Where Tyo is the Kelvin temperature at the low end of the measurement range that is to produce an output of Vio is the Kelvin temperature at the high end o
119. g information 1 1 1 1 1 12 GENERAL DESCRIPTION The 3B Series Signal Conditioning I O Subsystem provides a low cost versatile method of in terconnecting real world analog signals to a data acquisition monitoring or control system It is designed to interface directly to sensor or analog signals such as thermocouple RTD strain gage frequency inputs wideband mV and V AD590 AC2626 solid state temperature sensor outputs or millivolt or process current signals and convert the inputs to standardized analog outputs compatible with high level analog I O subsystems The 3B Series Subsystem consists of a 19 relay rack compatible universal mounting backplane and a family of plug in up to 16 per rack input and output signal conditioning modules Eight and four channel backplanes are also available Each backplane incorporates screw terminals for sensor inputs and current outputs and tracks for high level single ended outputs to the connector which interfaces with the user s equipment The high performance of the 3B Series Subsystem is assured by high quality signal conditioning featuring 130V or 220V rms input protection galvanic isolation high common mode rejection filtering low drift rugged packaging and when required sensor excitation A wide zero suppression capability and easy field calibration are available with a unique plug on ranging card The input and output modules are offered in both isolated 1500V peak
120. g mV mA Thermocouple Strain Gage and AD390 A 1 A2 Custom Ranging RTD Models 4 AS Custom Ranging LVDT Module 6 Ad Ranina 7 Multiple LVDT Installations B 1 C EN E 1 FM Approval The Series Documentation ssssssssssssssssssssssssssssssccssscscssssssessooons D 1 E The Series Subsystem Commonly Asked Questions ccce eee eene eene enun enu E 1 LIST OFTLLUSTRATIONS FIGURE 1 2 1 1 5 1 2 1 1 2 1 2 2 1 3 2 1 4 2 1 1 1 2 1 1 2 2 1 1 3 2 1 2 1 2 1 2 2 2 1 2 3 2 1 3 1 2 1 5 2 2 1 3 3 2 1 4 1 2 1 4 2 2 1 4 3 2 1 5 1 21 52 2 1 5 3 2 1 6 1 2 1 6 2 2 1 7 1 2 1 7 2 2 1 8 1 2 1 8 2 2 1 8 3 2 1 9 1 2 1 9 2 2 1 9 3 2 1 10 1 2 1 10 2 2 1 10 3 2 1 11 1 2 1 11 2 2 1 11 3 2 1 12 1 2 1 12 2 2 1 13 1 2 1 13 2 2 1 13 3 2 1 14 1 2 1 14 2 2 1 14 3 2 241 2 2 2 2 2 3 2 3 1 2 3 2 2 4 1 3B34 Functional Block Diagram Series System Functional Block Diagram Functional Block Diagram of a Typical Measurement and Control Application Using the 3B Series Subsystem eo Redde eee cse Model 3B37 Functional Block Diagram Input Module Connectors Module Outline Dimensions Mo
121. g on ranging card AC1310 A special input range can be provided by ordering the externally pro grammable version of the desired module i e 3B34 00 and the AC1310 which houses user supplied resistors that determine the new range A special range can also be factory configured Consult the factory for details For platinum and nickel RTD applications where internal linearization is required the following relations determine the values of the custom ranging components These relations assume the use of a 0 to 10V output span Contact the factory for information on any other output range Linearization Resistor 1 3 34 00 Q Q x 17 1 x 25 0 3B34 N 00 RA x L85 28 3 0 G Gain Setting Resistor 200 Zero Suppression Resistor R3A Rz Where 215 measure of nonlinearity Rz Resistance of the RTD at the temper ature that is to give Vo OV iw 2x10 V 9 1 ARrzs is the change in resistance from to Tmax which will give Vo 10V is the change in resistance from to which will give Vo 5V Figure 2 1 9 2 graphically shows the RTD values needed for ranging the 3B34 while Figure 2 1 9 3 depicts the mounting locations of the ranging resistors Tmax Twp NICKEL Tmax Tmi Tmp PLATINUM Figure 2 1 9 2 RTD Values Needed for Ranging Model 3B34 Tmin 2 21 SPECIFICATIONS
122. g to be used in a harsh or unfavorable environment it may be necessary to install it inside a protective enclosure It is recommended that the backplane be mounted and wired before the modules are installed If a plug in module requires calibration refer to the calibration instructions for the particular module PLEASE NOTE The 3B Series is approved by Factory Mutual for use in Class I Division 2 Groups A B C and D locations when meeting the installment requirements shown in the drawing in Appendix C 3 0 i 94 3 025 7 68 ra 4 275 10 86 0 250 0 64 TYPICAL END VIEW 7 300 18 54 TYP 4 CORNERS 10 500 26 67 4 CORNERS 0 250 0 54 BACKPLANE MOUNTING Four 6 32 x 1 screws and through standoffs at the four corners of each backplane are provided for mounting purposes Figure 3 0 1 shows the location of the mounting standoffs Securing the backplane with the four corner screws should be sufficient for most applications If additional rigidity 1 required on the 3 01 and 3B02 they can also be secured with the through standoffs found on the center of each backplane see Figure 3 0 1 The additional 6 32 x 1 screws are provided with the 3B01 and 3B02 4 700 11 94 3 025 7 68 o 0 250 0 64 TYP 4 CORNERS 3B01 4 700 3B02 4 37 11 1 11 94 3B03 REF CORNERS TYP 4 CORNERS Figure 3 0 1 Backplane Mounting Dimensions 19 RACK MOUNT AC1330 The AC
123. he 3B47 may also be calibrated using an ice bath setup OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION The 3B47 CUSTOM is recommended for the user needing 3B47 with special ranging This is a factory configured unit in which the factory will install the resistors needed for zero span and cold junction compensation as well as the fifteen separate components needed for linearization Consult the factory for details OPTIONAL CURRENT OUTPUT A current output can be provided for the 3B47 by installing a 3B19 or 3B39 in an adjacent channel and installing a jumper on the backplane that connects the 3B47 output to the Current Output Module s either 3B19 or 3B39 input If utilizing this feature with the 3B19 Non Isolated Current Output Module the 3B47 will have a current output capability com parable to that of the 3B37 Thermocouple Module If on the other hand the 3B39 Isolated Current Output Module is used the user would be provided with two levels of 1500 CMV isolation an isolated current output from an isolated input module If the Optional Current Output feature is desired it 1 im plemented by using wire wraps or jumpers on the appropriate pins of the jumper posts located near the voltage I O connectors Figure 2 1 14 2 defines the channel pairs that can have this WE HE d Ju c Ei 3B01 3B02 7 3B03 Figure 2 1 14 2 Adjacent Channels That Can Be Connected SPECIFICATIONS typical 25 C
124. ically designed for 4 wire RTDs where high accuracy is required The 3B14 provides automatic lead wire compensation to eliminate the effect of lead resistance from 3 wire sensors with an accuracy of 0 02 C The 3B15 provides automatic lead wire compensation for 4 wire sensors with an accuracy of 0 00001 The RTD signal is internally linearized in each model to provide an output that is linear with temperature Figure 2 1 4 1 shows a functional diagram for models 3B14 and 3B15 A sensor excitation current of 25mA is provided by each module Input protection of up to 130V for the input and excitation circuitry is provided The signal is then amplified linearized and filtered to give the high level voltage output Chopper based amplification is used to assure low drift and excellent long term stability Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment through screw terminal connections FINE CALIBRATION Each model is factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive Th
125. ility is provided with a plug on ranging card AC1310 a special range is desired it can be provided by ordering the externally rangable version of the desired module 1 e 3B42 00 and the AC1310 which vin Filler CHOPPER AMP Ranging Card lf Used Figure 2 1 12 1 3B42 3B43 and 3B44 Functional Block Diagram houses user supplied resistors that determine the zero and span of the new range Special ranges can also be factory configured Consult the factory for details The basic transfer function of the 3B42 3B43 and 3B44 is Vo G Vin Vz Vo Output Voltage G Gain Vin Input Voltage rms Vz Zero Suppression Voltage rms where M Gain G is the ratio of the change of output to the input change that produced it SCALING RELATIONS With the AC1310 the gain is set and is used to control the scaling of input in each of these three models while determines the gain from the rectifier on R 15 determined from the following relations 3B42 3B43 3B44 20k 20kQ 20kQ LS Se Rant SES E E 75507 KV n KV n Where V av V rms 0 900 for sinusoids V 7 full scale rms input voltage SCALING SCALING AND SELECTION ONLY ZERO SUPPRESSION R Input Scaling Resistor Input Scaling Resistor Jumper Zero Suppression Resistor Open Open Output Scaling Resistor Output Scaling Resistor Figure 2 1 12 2 3B
126. ince I C dv dt and a typical module capacitance to ground is 10pF each module could see 200mA of surge current The 3B Series backplanes which have been designed to accommodate up to 16 channels of this surge current have a large ground plane and two large ground lugs that should be used with heavy cabling to return the surge current to earth ground in systems requiring surge withstand capability 7 4 1 4 2 4 2 1 15V AND 24V LOOP POWER COMMONS The 3B Series backplanes are shipped with the 15V common tied to the 24V loop common with jumper W4 If the commons of the two supplies are tied externally this connection W4 should be disconnected to avoid ground loops withiz the subsystem If it is desired that the commons of the 15V and 24V loop supply be ciiferent because of the existing hardware the commons can vary by several volts and still operate The precise relationship is defined in Figure 4 1 2 1 where the area between the limits defines the allowed differences between the power commons The 15V supply can be used to power the current outputs if desired The only limitation when using the 15V to power a current loop is that the output load must be 4000 or less 35V Vis Vic VOLTAGE AT LOOP SUPPLY VOLTAGE 5 WITH RESPECT To 15 10 LOWER LIMIT E C Vic 8V Vis Figure 4 1 2 1 Relationship Between ISV and Loop Power Supply Commons INTERFACE BOARDS There a
127. inductance of the interconnect tng 30 Volts wi must be equal to or less than the Capacitance Imax 30 mA inductance which can be driven by the source SEE NOTE 2 1 0 evic B SEE NOTE 3 B MODEL mnpur o ERIE R SUPPLIES FUSE NUMBER VOLTAGE RATING AC1300 105 Vac to 125 Vac 250 V 500 mA AC1300E 205 Vac to 240 Vac 250 V 8 500 mA i i i i j 4821301 105 125 250 V 6 500 mA 3B02 and 3803 have the same nonincendive field circuit values as the 3801 but have fewer input and output screw terminals 8 and 4 respectively 1301 205 Vac to 240 Vac 250 V 500 mA 1302 22 3 Vde to 26 4 Vdc NA SEE NOTE 6 OF SHEETS f for sensor values its entity values are Voc 30 ACt307 105 Vac to 125 Vac 250 500 mA Volts Ine c 30 mA La SO m 0 2 OF 205 Nag Ta 240 Vac 250 Vw 500 mA n prse p me j SPECIFIED DIMENSIONS ARE INCHES ERANCES gt NORWOOD MASSACHUSETTS 3 When 24CVac input is used one side of line must be grounded ANALOG DEVICES x 4 Approved plug in power supplies are AC1300 AC1301 AC1302 AND 1307 fon 5 APPROVED 3B SERIES MODULES 3810 3811 3812 3813 3B14 3B15 EG 3816 3817 3818 3819 3830 3831 3 32 3834 3837 3939 3840 3B41 3B42 3B43 3B44 3845 3846 AND 3847 6 FULL LOAD INPUT CURRENT OF AC1302 15 350 mA BRUNING 44 131 5
128. is since a jumper is installed on the range carrier pins If the jumper 15 removed there will be nominally 4 20 of hysteresis If less hysteresis is desired it can be accomplished with the following equation 3B45 3B46 _ 10 _ 10 BENE Va where Vy 15 the desired hysteresis Vy can be set for any value between 0 and 4V with a 2096 tolerance THRESHOLD SELECTION The threshold 1s determined by user wiring on the input screw terminals If the input signal is a zero crossing voltage input the LO input screw terminal must be tied to the EXC screw terminal to implement a OV threshold see Figure 2 1 13 3a When the LO input is not connected to the EXC terminal as in Figure 2 1 13 3b the threshold is 1 6V which is useful for TTL level inputs For open collector outputs an internal pull up resistor is provided at the EXC screw terminal The pull up resistor and 1 6V threshold are used with switch closure inputs Figure 2 1 13 3c EXC COLLECTOR D 1 HI Hi b a Zero Crossing b 1 6V Threshold 1 6V Threshold with Threshold Contact Excttation Figure 2 1 13 3 Threshold Selection RESPONSE TIME Response time is a function of the frequency range The table below indicates the time required to reach 9096 of the output span for a step change input to the minimum and maximum ranges of the 3B45 and 3B
129. is placed on the ranging connector of each 3B17 to be synchronized This connects a control node of the excitation oscillator to Bus 3 on the 3B01 3B02 3B03 16 8 and 4 channel backplanes Other 3B modules may still be used on the same backplane but only 3B17s with identical nominal excitation voltages and frequencies may be connected to the synchronization bus User programmed units 1 e 3B17 00s cannot be synchronized because the AC1310 custom ranging card is required to provide the connection to the synchronization bus The synchronization capability is available only on 3B17s with a date code of 8646 or higher Figure B2 To Synchronize Like 3B17s Solder Jumper in Position R3B APPENDIX C ACCESSORIES Custom Ranging Card ADIP N Description Used With AC1310 Plug on Card Requiring Customer Any 3B Input Module Supplied Resistors Power Supply Kits Input Output Output ADIP N Voltage Voltage Current Description AC1300 115 15 200mA AC Power Supply and Hold Down 1301 115 15V 350mA AC Power Supply and Hold Down 1302 24V dc 15V 190mA DC DC Converter and Hold Down 1307 115 15 800mA 225 AC Power Supply and Hold Down 24V 350mA Power supply current is a function of the actual modules used See Table II in the 3B Series data sheet for current requirements Add or H suffix to mode number for 220V 100V 240V ac input voltages resp
130. lied by the fraction RJ R R3 In practical terms this amounts 0 the total of the resistor tolerances for small Vz half the total resistor tolerance at Vz 3V virtually no effect from resistors at Vz 6V Thus if Vz is to be for example 100mV the use of 1 tolerance resistors will result in a total possible error of 4 of Vz or X 4mV assumes a 2 error in the reference voltage This error is as seen at the module input independent of gain For models 3B11 and 3B31 a 10 x input attenuator is used to extend the input signal range of the basic amplifier in the 3B10 and 3B30 respectively The tolerance of the attenuator 2 max must be considered with custom ranging and is additive to the above terms The range of the module s voltage output ZERO ADJUST is at least 0 5V at the module output and it can therefore correct any input offset error of less than 0 5V G Thus the 4mV input offset in the example above can be adjusted to zero for any gain less than 125 If more gain is to be taken it will be necessary to use more accurate resistors at R and or R to guarantee that the offset can be zeroed The tolerance of the gain setting resistor affects the accuracy of the selected gain directly Since the module s SPAN ADJUST pots have at least 5 adjustment range the use of 1 tolerance resistors for R will be sufficient APPENDIX Al 2 TEMPERATURE EFFECTS The temperature drift of the zero s
131. lies Range 12Vtol6 5V Supply Rejection 0 01 span V Supply Current 10 24V Loop Supply Range 12V to 30V Supply Rejection 0 0002 span V Supply Current 27mA at FS Size 3 150 0 775 3 395 Environmental Temperature Range Rated Performance 25 C to 85 C Storage Temperature Range 55 C to 85 C Relative Humidity Conforms to MIL Spec 202 010 95 40 noncondensing RFI Susceptibility 0 5 span error SW t 400M Hz 3 ft NOTES For 0 20 range a typical minimum cuiput current 15 10 Accuracy spec includes the combined effecis of repeatability hysteresis and linearity Does not include sensor or signal source error Custom calibration may be accomplished with custom ranging card 1310 4 24 de power is only necded for driving the current output at up to 8500 If only voltage output is used or current output of 40011 or jess is desired 13V is all that is required Specifications same 23 3840 Specifications subject to change without notice ORDERING INFORMATION Input Range Model Number Low Level Externally Programmable 3B40 00 10mV 3B40 01 50mV 3B40 02 100mV 3B40 03 High Level Externally Programmable 3B41 00 1V 3B41 01 5V 3B41 02 10V 3B41 03 FREQUENCY RESPONSE The standard bandwidth of the 3B40 and 3B41 is 10kHz This frequency response is determined by a two pole filter A third pole is available to reduce the frequ
132. m Raneing ee Res 3B37 Zero Suppression Resistors 3B40 and 3B41 Functional Block Diagram 3B40 3B41 Custom Ranging 3B40 and 3B41 Zero Suppression Resistors 3B42 3B43 and 3B44 Functional Block Diagram 3B42 and 3B43 and 3B44 Custom Ranging 3B45 and 3B46 Functional Block Diagram 3 45 3B46 Custom Ranging Threshold Selection oe au Moe ee 3B47 Functional Block Diagram 3B47 Custom 3B47 Zero Suppression Resistors Model 3B39 Isolated Voltage to Current Converter Function Block Diagram Output Module Connectors Output Module Backplane Outline Dimensions Backplane Pin 5 Power Supply Connections e 4 4 u 4 e 3 0 1 3 1 1 3 1 2 3 2 1 3 2 2 3 2 3 3 3 1 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 4 1 1 4 1 2 1 4 2 1 1 4 2 1 2 4 2 1 3 4 2 1 4 4 2 2 1 4 2 2 2 4 3 1 4 3 2 4 3 3 4 5 1 4 5 2 5 1 5 2 5 3 5 4 5 5 5 6 1 2 1 3 1 2 4 1 4 2 1 1 4 2 1 2 Backplane Mounting Dimensions 3 1
133. m for the model 3B37 Input protection of up to 220V is provided for the input circuitry Cold Junction Compensation with an initial accuracy of 0 5 C is performed in each unit with the external sensor provided on all channels of the 3B Series backplane The signal is amplified and filtered to give the high level voltage outputs Chopper based amplification is used to assure low drift and excellent long term stability Transformer cou pling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment through screw terminal connections DOWNSCALE OPEN INPUT DETECTION The 3B37 provides upscale open thermocouple detection when used under normal operation Downscale open ther mocouple detection can be provided by installing 220 resistor across screw terminals 2 and 4 This resistor could be a 0 25W carbon comp and need not be a tight tolerance 20 The addition of this resistor reverses the input bias current which provides downscale open input detection FINE CALIBRATION The 3B37 is factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span Cold junction sensors with an initial accuracy of 0 5 C are provided on each backplane channel If greater accur
134. mV 4 Remove all load or torque from the transducer and adjust I for 4mA 0 016mA or the voltage measured across R 1V 4mV 5 Connect a full load to the transducer and adjust 1 for 1 20mA 0 16 or the voltage measured across R 5V 4mV If a 0 20mA output is desired for a0 to 10V output adjust I for I OmA 0 020 in step 4 and I for I 20mA 0 020mA in step 5 A typical minimum output current is with 0 20mA operation If the current output is to be proportional to a 10V to 10V output instead of a 0 to 10V output I should be adjusted for a Full Scale input in step 4 CUSTOM CONFIGURATION A powerful custom ranging capability is provided with a plug on ranging card AC1310 If a special excitation voltage or frequency or module gain is desired it can be provided by ordering the externally programmable version 3B20 00 and the AC1310 which houses the user supplied resistors that determine the excitation voltage and fre quency and the module s gain The bandwidth of all standard 3B20 s is 100Hz A factory configured 3B20 CUSTOM can have a bandwidth that varies up to 1 10 the excitation frequency SPECIFICATIONS typical 25 C and 15V 24Vde power Modet Mini Sensitivity Outputs Maximam Curren Outpat for input Overload Accuracy Noniinserity Stability vs Ambient Tomperumros Voltage Zaro Span Current Output wrt Voltage Output Zaro Sum 3 150
135. modules and Section 2 2 for output modules 4 4 2 4 4 3 4 4 4 4 4 5 4 5 MODULE CALIBRATION Each module has adjustment potentiometers that provide a 5 adjustment range If fine cali bration Or minor range variations are desired it can be accomplished by the calibration procedure defined for each module see the calibration section of the appropriate module in Section 2 All units are shipped with a zero and span accuracy of 0 1 of span CUSTOM RANGING ZERO SUPPRESSION A wide zero suppression capability and easy field ranging are available with the AC1310 plug on ranging card If a special input range is desired it can be provided by ordering the externally programmable version of the desired module i e 3B32 00 and the AC1310 which houses user supplied resistors that determine the zero and span of the new range This feature allows the user to provide zero suppression of up to and beyond 100 of the input range and provide a very wide range of span modification The capability allows the user to map any portion of the input signal to the full output span See the Custom Ranging section of the appropriate module in Section 2 to determine the required resistor values The error contributions and temperature effects of custom ranging are discussed in Appendix A MODULES COLOR CODING The top labels of each module have been color coded to differentiate isolated units from nonisolated ones and input modules from output units The
136. mpensation circuitry which is used with the external sensors incorporated in the 3B Series backplanes The calibration of this circuitry is accomplished with a resistor installed in position R4B The values for thermocouple types J K T E R S and B are defined below if another type is required consult the factory for the required resistor value TCType J K T E R S B RB 2100 1650 1650 2430 23 70 23 70 Jumper 00 LIMITS The ranging card can be used to create a wide range of special transfer functions but there are practical limits that must be observed The maximum differential input voltage for normal linear operation is 1V The range of the voltage output adjustment is at least 0 5V at the module output and can therefore correct any error of less than 0 5V Gain If possible the resistors used should be 1 tolerance lOppm See Ap pendix A for a detailed discussion of limits error contributions and temperature effects of the ranging card 2 1 11 MODELS 3B40 and 3B41 FEATURES Accepts Inputs from 10mV to 10V Inputs 10kHz Bandwidth Dual High Level Outputs Voltage 10V Current 4 20mA 0 20mA High Accuracy 0 1 Low Drift Reliable Transformer Isolation 1500 CMV CMR 100dB Meets IEEE 472 Transient Protection SWC Input Protection 220V rms Continuous Reliable Pin and Socket Connections FUNCTIONAL DESCRIPTION The 3B40 is an isolated wideband millivolt input module that is designed to accept signals rangi
137. nce between channels This interference which can occur when the difference in the LVDT excitation frequencies is smaller than the bandwidth of the module can be virtually eliminated by keeping the wires from each LVDT as far apart as possible It is best to use shielded cable tying the shield to backplane common and keeping the LVDT leads as short as possible Interference may still occur if the bodies of the LVDTs must be in close proximity to each other To eliminate any interference the oscillator of one 3B17 can be used to excite several LVDTs The primary leads of all the LVDTs are connected in parallel to screws 1 and 4 of the module whose oscillator is to be used The secondary leads are connected in the normal manner to their respective 3B17s A jumper AC1344 must be installed between pins 1 and 3 of the optional ranging card connector of the modules whose excitation circuits are not being used to turn off those modules oscillators see Figure below This technique is limited in that the sum of the primary currents of all the LVDTs connected to one 3B17 must not exceed 20mA rms Figure Bl 3B17 Module Bottom View of Connectors APPENDIX B2 SYNCHRONIZING MULTIPLE LVDTs It is possible to synchronize the oscillators of any number of 3B17s on the same backplane All of the 3B17s to be synchronized must have the same nominal excitation voltage and frequency An AC1310 with a jumper soldered into position R3B see Figure below
138. nd 1V for the zero adjustment The current output which has 130V output protection interfaces with user equipment through screw terminal connections In order to compensate for any phase shift between the excitation signal and the output signal from the transducer a phase adjustment potentiometer is included in the front window of the module 3B20 FINE CALIBRATION Each model with the exception of the 3B20 00 is set up by the factory fora specified excitation voltage and frequency The voltage and current outputs must be finely calibrated and the phase adjustment must be set for a specific transducer The voltage output must be trimmed before the current output because the large dynamic range of adjustment is accomplished in the voltage stage Once the voltage output is calibrated the current output can be Q o 5 zT o mao Ol Figure 1 3B20 Functional Block Diagram independently adjusted The following procedure is rec ommended 1 Connect the 3B20 as shown in the block diagram with R 2500 Rotate the adjustment counterclockwise until it clicks This is zero phase adjustment Apply a load or torque to the transducer that is at least 25 of full scale Adjust for the maximum V This will compen sate for any phase errors in the transducer 2 Remove all load or torque from the transducer and adjust V for V OV 10mV 3 Connect a full load to the transducer and adjust V for V 10 0V 10
139. nection 4 6 Cold Junction Compensation 47 Individual Module Mounting Dimensions 4 8 Schemat Slee a WE AGS oc E 5 1 SCHOMOUNC w ue dr e X 5 2 3H03 5 5 3 AGIZO Schemi iC eec Veo et De ere Ba 5 4 1321 Schematic ed eg Sk ae OH a ee 5 5 AGISZ2 Ute 5 6 ACI323 SCHEMAUC ie pe Se de qb ke a ee REC 5 7 Multiple LVDT Installations 1 Synchronizing Multiple 5 B 1 LIST OF TABLES Module Selection Table 1 2 Module Power Requirements 2 36 Adapter Boards for Analog Devices RTI Boards 4 2 3B Series Cables and Connectors 44 CHAPTER 1 INTRODUCTION SCOPE OF THE MANUAL The intent of this manual is to serve as a guide to the proper configuration and operation of the 3B Series Subsystem as well as present the functional theory and specifications A separate section is devoted to custom calibration and interfaces to user equipment Appendices are included which contain accessories and custom rangin
140. ng from to 100mV Model 3B41 is an isolated wideband voltage input module that is designed to accept voltage input signals ranging from IV 10 Each model has a 10kHz bandwidth to interface to dynamic signals Figure 2 1 11 1 shows a functional diagram for models 3B40 and 3B41 Input protection of up to 220V rms is provided on the input screw terminals Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adjusted over 5 span range for zero and span with front panel accessible potentiometers The current output which has 130V rms output protection interfaces with user equipment through screw terminal connections FINE CALIBRATION Each model is factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive procedure is recommended 1 Connect model 3B40 3B41 as shown in Figure 2 1 11 1 with 2502 2 Apply Vin 0 volts adjust Vz for VouT 10mV Iz for 4mA 0 016mA or the voltage measured across Rj 1 4mV 3 Apply Vin Full Scale adjust Vs for Vout 10V 10mV and for lout 20mA
141. nnector J4 Connector J5 is used to interface to the RTI 1242 and RTI 1243 analog output boards If more than eight analog outputs are required connector J6 can be used as the interface for an additional eight analog outputs The AC1323 interfaces the 3B Series to Analog Devices analog I O boards that are compatible with Intels MULTIBUS see Figure 4 2 1 4 Connector Jl is used to interface one 3B Series backplane up to 16 channels to the RTI 711 and RTI 732 with connector J2 Connectors J3 J6 are each used to interface four analog output channels to the RTI 724 and RTI 732 The AC1323 can be used to accommodate any mix of 16 inputs and outputs The IOB120 01 interfaces the 3B Series to Analog Devices I O boards that are compatible with the IBM PC IBM XT and J1 on the IOB120 01 provides direct 3B interface to the RTI 800 RTI 815 and MIO120 A via and J3 W1 and W2 can either be jumpered to channels 14 and 15 of the 3B backplane for input or can be configured to provide analog output on channels 14 and 15 Terminal Block 2 TB2 provides continuous analog output for the RTI 815 and MIO120 A only provides the capability for external convert commands on all boards Cables and connectors are offered that interface with these accessories These accessories are defined in Table 4 2 1 2 4 2 2 3B TO RTL MACSYM CABLE ASSEMBLIES In addition to the RTI Interface Boards there are also several cable assemblies
142. nnel If greater accuracy is desired the modules should be calibrated in the actual backplane channel that they will be installed in User accessible zero and span trim potentiometers providing a 5 adjust ment range permit precise field calibration of the voltage output The following nonrecursive adjustment procedure 15 recommended 1 Make connections as shown in Figure 2 1 14 1 Use a precision millivolt source 2 Measure the ambient temperature of the screw terminal block and determine the millivolt output for millivolt temperature tables This value will be inverted and added to the millivolt span of the thermocouple being simulated 3 Determine the zero and full scale points for the measurement range from standard millivolt temperature tables and add to the number determined in step 2 Example Type J 0 500 C Zero and full scale values Output at ambient temperature Corrected zero and span values OmV to 27 388mV 1 277mV invert sign 1 277 to 26 1 1mV 4 Apply for the minimum input signal determined in step 3 adjust Vz for 10mV 5 Apply for the maximum input signal determined in step 3 adjust Vs for Vour 10V l0mV NO CURRENT OUTPUT THERMOCOUPLE INPUT Vout COM Ranging Card if Used Figure 2 1 14 1 3B47 Functional Block Diagram 5 Apply for the maximum input signal determined in step 3 adjust Vs for 10V 10 T
143. ntial Input Protection Voltage Output Protection Current Output Protection Zero and Span Adjustment Range Response Time to 90 Span Input Transient Protection Input Resistance Input Bias Current input Noise Output Noise Bandwidth Power Supplies 15 Input Supplies Range Rated Operation Supply Rejection Supply Current 24V Loop Supply Range Supply Reiection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperature Range Relative Humidity Conforms to Spec 202 Susceptibility NOTES 3B32 4 20mA 0 20mA 10V SmA 4 20mA 0 20mA t 0108508 0 31 0 1 span 0 01 span 0 0025 span C 0 0025 reading C 0 002596 span C 0 002596 reading C 1500V pk max 160dB 60dB 220V rms cont Continuous Short to Ground 130V rms cont 5 of span 0 25 Meets IEEE STD 472 SWC ISMN 3nA 0 2 V mms at 10 gt bandwidth S0n V rms in 100kHz bandwidth 3Hz 3dB 11 5V t016 5V 0 01 span V 10mA 12V to 30 0 000296 span V 27m at FS 3 150 x 0 775 x 3 395 25 to 85 55 C 10 85 0 t095 60 C noncondensing 0 5 spanerror SW t 400M Hz a 3 ft Fora0 20m range a typical minimum output current is lOp 2 Accuracy spec includes the combined of repeatability hysteresis and linearity Does nol include sensor or signal source error
144. ntinuous Continuous Short to Ground 130V rms Continuous 5 of span 20kHz 2445 100 0 25nA 13 5V 16 5V 0 01 span V 50 15 13 5V to 30 0 0002 span V 27mA at FS 3 150 x 0 775 x 3 395 25 85 C SS C to 85 C 01095 t 60 C noncondensing 0 5 span error 5W 400MHz 3 ft 0 20mA range typical minimum output current is 7Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does not include sensor or signal source error Includes excitation circuitry Custom calibration may be accomplished with a custom ranging card 1310 5 24V de power is only needed for driving the current output at up to 8500 If only voltage output is used Or a current output load of 4000 or less is desired 15V is all that is required Specifications subject to change without notice ORDERING INFORMATION Input Ranges Externally Programmable 30mV 3mV V Sensitivity with 10V Excitation 10mV 3mV V Sensitivity with 3 33V Excitation Model Number 3B18 00 3B18 01 3B18 02 FREQUENCY RESPONSE Model 3B18 s standard bandwidth is 20kHz The bandwidth can be set for any value less than 20kHz using the AC1310 The required capacitors C and are determined from the following relauons 8 4 F Fc C 4 2uF Fe Note For values of C below 3nF reduce C by 320pF and C 160p
145. of output to the input change that produced it If there is to be no zero suppression i e 0 C OmV OV output then R should be a jumper and R should be left open Refer to the cold junction compensation section for the value for R4B These resistors should be installed as indicated in Figure 2 1 10 2 2 23 SPECIFICATIONS typical 25 C and 15V 24V dc power Model Inputs Outputs Accuracy Nonlinearity Stability vs Ambient Temperature Voliage Output Zero Span Current Output w r t Voltage Output Zero Span Common Mode Voltage Input to Output Common Mode Rejection 50H2 or 60H2 Source Unbalance Normal Mode Rejection 50Hz or 60H2 Differential Input Protection Voltage Output Protection Current Output Protection Zero and Span Adjustment Range Response Time to 90 Span Input Transient Protection Input Resistance Input Bias Current Input Noise Open Input Response Open Input Detection Time Output Bandwidth Cold Junction Compensation Initial Accuracy vs Temperature 5 C to 45 C Power Supplies 15 Input Supplies Range Rated Operation Supply Rejection Supply Current 24V Loop Supply Range Supply Rejection Supply Current Size Environmental Temperature Range Rated Performance Storage Temperaturc Range Relative Humidity Conforms to MIL Spec 202 Suscepubility NOTES 3B37 Thermocouple Types K T E R S B 10 Sm
146. oltage output Chopper based amplification is used to assure low drift and excellent long term stability Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment Model 3B16 requires a ground return for the input connection to return the bias current to ground FINE CALIBRATION The 3B16 01 is factory calibrated for a strain gage with a 30mV span and provides a zero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibra tion of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive procedure is recommended 1 Connect mode 3B16 as shown in Figure 2 1 5 1 with Ry 2500 2 Apply Vin 0 volts adjust Vz for Vout 0V JOmV and Iz for lout 4mA 0 016mA or the voltage measured across 1V 4mV 3 Apply Vin 30mV adjust Vs for Vout 10V 10mV for 20mA 0 016mA or the voltage measured across 5V 4mV If 0 20mA output is desired for a 10V output adjust Iz for OmA 0 020mA in step 2 and for 20mA 0 020mA in step 3 A typical minimum output current is 10 with 0 20mA operation If the curr
147. om View of Connectors Figure 2 1 2 Input Module Connectors 3 395 86 2 Figure 2 1 3 Module Outline Dimensions Dimensions shown in inches and THERMO COUPLE INPUT CONNECTIONS ALL INPUT CONNECTIONS USE 6 32 SCREW TERMINALS COMPATIBLE WITH 14 AWG WIRE Figure 2 1 4 Module Input Connections 2 1 1 MODELS 3B10 AND 3B11 FEATURES Accepts Millivolt and Volt Inputs 3B10 10mV to 5V 3B11 10V FUNCTIONAL DESCRIPTION Model 3B10 is a nonisolated voltage input device that 1s designed to accept a wide range of input voltages ranging from 10mV to 5 Model 1 is a nonisolated high level voltage input device that is designed to accept 10 Figure 2 1 1 1 shows a functional diagram for models 3B10 and 3B11 Input protection of up to 130V is provided on the input screw terminals The signal 1s then amplified and filtered to give the high level voltage output Chopper based amplifi cation is used to assure low drift and excellent long term stability Both the voltage and current outputs can be inde pendently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment through screw terminal connections Both models 3B10 and 3B11 require a ground return for the input connections to return the bias current to ground FINE CALIBRATION Each model is factory calibrated
148. on compensation sensor in thermocouple applications This sensor is to be installed as indicated in Figure 4 5 1 The cold junction sensor will give an initial accuracy of 0 5 C INPUT CONNECTOR PINS 2 6 4 Figure 4 5 1 Cold Junction Compensation Connections 4 7 0 138 0 138 REF 77 pm 0 094 0 004 DIA 0 035 0 004 DIA 0 500 12 700 094 0 0 889 0 102 CASE RETAINER CLIP 222 2 388 0 102 TYP 18 HOLES CASE RETAINER CLIP MOUNTING HOLES 4 EACH 0 250 6 350 0 138 REF E CASE RETAINER CLIP 2 EACH oe e O 0 300 REF L T e ue S a 7 620 _ o 9 4 i 0 300 REF 7 620 0 900 1 1 22 86 4 EQ SPACES 0 150 0 600 15 240 2 875 73 025 o CASE RETAINER CLIP MTG DIM 0 000 3 150 0 010 20 010 10 20 1 350 REF i 34 290 ELI 1 950 em 49 530 0 400 MIN 10 160 BETWEEN INPUT OUTPUT CONDUCTORS X _ UNIVERSAL RANGING 0 300 7 620 0 150 3 810 0 300 7 620 INPUT CONNECTOR 0 200 MIN 5 080 SPACING IS REQUIRED BETWEEN INPUT CONDUCTORS 0 200 MIN 5 080 Figure 4 5 2 Individual Module Mounting Dimensions Dimensions shown in inches and mm 4 8 Ji 1 Jal LOOP gt LOOP OUT gt Ooo QUT gt _ _ 00 our 100 a pA LOOP vt 2 S 5 LOOP 5 NE 6 E E
149. on of limits error contributions and temperature effects of the ranging card Figure 2 3B20 Custom Ranging Gain Excitation Voltage and Frequency Selection R1 Excita on Amplitude R2 Excitation Frequency R3A Excitation Frequency R4B Gain 2 1 8 MODELS 3B30 AND 3B31 FEATURES Accepts Millivolt and Volt Inputs 3830 10mV to 100mV 3831 1V to 10V Reliable Transformer Isolation 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC FUNCTIONAL DESCRIPTION Model 3B30 is an isolated millivolt input device that 1s designed to accept millivolt signals ranging from 10mV to 100mV Model 3 31 is an isolated voltage input device that 1s designed to accept voltage signals ranging from 1V to 10V Figure 2 1 8 1 shows a functional diagram for models 3B30 and 3B31 Input protection of up to 220V 15 provided on the input screw terminals The signal is then amplifed and filtered to give the high level voltage output Chopper based amplifi cation is used to assure low drift and excellent long term stability Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adjusted over a 596 span range for zero and span with the front panel accessible potentiometers The current output which has a 130V output protection interfaces with user equipment through screw terminal connections FINE CALIBRATION Each model is factory
150. onitnearity 0 01 span Stability vs Ambient Temperature Voltage Output Zero V C Span 0 0025 reading C Current Output w r t Voltage Output Zero 0 002596 Span 0 0025 reading C Common Mode Voltage Input to Output 6 5V Common Mode Rejection 50 2 or 60Hz 1k Source Unbalance 90d B Normal Mode Rejection SOHzor 60Hz 60dB Differential Input Protection Voitage Output Protection Current Output Protection Zero and Span Adjustment Range 130V rms cont Continuous Short to Ground 1 30V rms cont 5 of span Response Time to 90 Span 0 2sec Input Resistance 100M Input Bias Current Input Noise 0 2u V rmsat 10Hz bandwidth Output Noise 50u V rms in 100kHz bandwidth Bandwidth 3Hz Power Supplies 15V Input Supplies Range Rated Operation 11 5V to 16 5V Supply Rejection 0 01 span V Supply Current 10mA 24V Loop Supply Range 12V to 30V Supply Rejection 0 000296 span V Supply Current 27mA at FS Size 3 150 x 0 775 x 3 395 Environmental Temperature Range Rated Performance 25 C to 85 C Storage Temperature Range 55 C to 85 Relative Humidity Conforms to MIL Spec 202 01095 a 60 C noncondensing 0 5 span error SW 400MHz 3 ft RFI Susceptibility NOTES Fora0 20mA range a typical minimum oulpul current is lOi A Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does nol include sens
151. onverts this high level voltage output to a process current which can be used to drive an actuator or any other control element MODULE INPUT SENSOR OR TRANSMITTER mV V 0 10V OR 10V AND 4 20mA INPUT MODULES ACCEPT REAL m TRAIN GAGE WORLD ANALOG INPUTS AND PROCESS coma PROVIDE TWO HIGH LEVEL ANALOG OUTPUTS AD590 ANALOG M CER I O SUBSYSTEM PA CAM i e RTI ACTUATOR VALVE OUTPUT MODULE 0 10V OR 10V OUTPUT MODULES ACCEPT HIGH LEVEL VOLTAGE INPUTS AND PROVIDE PROCESS CURRENT OUTPUTS Figure 1 5 1 Function Block Diagram of a Typical Measurement and Control Application Using the 3B Series Subsystem 16 BACKPLANE FUNCTIONAL DESCRIPTION The three backplane models 3 01 3B02 and 3B03 are designed for sixteen eight and four channels respectively which offers users the flexibility to match the size of a system to specific applications The sixteen channel backplane can be mounted in a 19 x 5 25 panel space while all backplanes can be surface mounted or mounted in a NEMA enclosure 17 POWER SUPPLY The 3B Series Subsystem can operate from a common ac power supply or dc dc 24V input power supply mounted in the subsystem or an externally provided 15V or 24V supply The power supply is bussed to all signal conditioners in the system Several power supplies are available to satisfy various current requirements CHA
152. or any value between 1V and 5V The accuracy of the excitation is 10 with a harmonic distortion of less than 0 5 EXCITATION FREQUENCY RELATION The excitation frequency can be set for any value between 2 and 10 2 by resistors R These values are determined by the equation below 10 where f is the desired frequency of oscillation These resistors should be installed as indicated in Figure 2 1 6 2 2 16 2 1 7 MODEL 3B18 FEATURES Accepts Strain Gage Input 20kHz Bandwidth Provides Bridge Excitation Dual High Level Outputs Voltage 10V Current 4 20mA 0 20mA High Accuracy 0 1 Low Drift 3pV C Input Protection 130V rms Continuous Reliable Pin and Socket Connections FUNCTIONAL DESCRIPTION The 3B18 is a wideband input module that is designed to accept signals from full four arm bridge strain gage type transducers on the input screw terminals The 3B18 provides a switch selectable excitation of 3 3V 10 0 and can be used with 1000 to 10k strain gage bridges The module has a 20kHz bandwidth to interface to dynamic signals Figure 2 1 7 1 shows a block diagram for the model 3B18 A regulated bridge excitation of either 3 3V or 10 0V is provided on screw terminals and 4 Input protection of up to 130V is provided for the input and excitation circuitry The signal is amplified to give the high level voltage output Both the voltage and current outputs can be independently adju
153. or or signal source error Models 3B10 04 and 3B 10 05 have zero drift values of 3u and 15 respectively 3B 10 03 3B 10 04 and 3B 10 05 have CMR values of 85dB SOdB and 75dB respeciively wide range of zero suppression and custom calibration may be accumplished with a custum ranging card 1310 9 24V dc power is only needed for driving the current output at up to 85011 If only voltage Output is used or a current output load uf 4001 less is desired 15V isall that is required Specifications same as 3B 10 Specifications subject 10 change without notice ORDERING INFORMATION Input Range Model Number Low Level Externally Programmable 3B10 00 J mV 3B10 01 50mV 3B10 02 100mV 3B10 03 Ey 3B10 04 45V 3B10 05 High Level Externally Programmable 3B11 00 10V 3B11 01 3B11 10 t b ZERO SUPPRESSION VOLTAGE For the 3B10 the zero suppression voltage Vz can be set for any value between 6 35V and 6 35V through the use of R and while Vz can be set to any value from 63 5V to 63 5V for model 3B11 Vz is determined from the following relations 3B10 3B11 Vz 6 35V x R Vz 63 5V X 2 with the sign of Vz determined by the choice of location A positive or location B negative for see Figure 2 1 1 3 The total resistance of R3 should be approximately 10 to avoid taking excessive current from the voltage reference
154. ouv ob at SEU a 2 15 2 1 7 Model 18 Wide Bandwidth Strain Gage Input 2 2 17 2 1 8 Models 3B30 and 3B31 Millivolt and Voltage Inputs 2 19 2 1 9 Model 3B34 RTD Input 2 21 2 1 10 Model 3B37 Thermocouple Input 2 23 2 1 11 Models 3B40 and 3B41 Wide Bandwidth Millivolt and Voltage Inputs 2 25 2 1 12 Models 3B42 3 43 and 44 ac Inputs 2 27 2 1 13 Models 3 45 and 3B46 Frequency Inputs 2 29 2 1 14 Model 3B47 Linearized Thermocouple Input 2 31 22 Modules eekly ok wo rate May te 2 33 2 3 Backplane Functional Description 2 36 2a Supply 25 5 A CU Er RECS Em OR Nu aras 2 38 CHAPTER 3 INSTALLATION 3 1 3 0 Backplane Mounting 3 1 Sok 19 Rack Mount KIE CACI330 92 SR 3 1 3 2 Series Surface Mount Kits AC1331 1332 33 3 2 2 3 Power Supply Installation X X ww GS 3 4 3 4 Electrical Conmections 4 4 4 a Ow AS RED AS 3 4 3 Module Installation 3 ae d CE 3 7
155. quirements are a function of the quantity and types of module used see Table II Power Supplies include AC1300 and AC1301 Each is offered in one domestic and three foreign versions Refer to Power Supply Specifications ACI302 is optional dc Power Supply Specifications same as 3801 Specifications subject to change without notice Power Connector DC Power 1 O LOOP V 2 9 LOOPCOM 3 O NC 4 15 5 15V COM 6 15V TOP VIEW MATING CONNECTOR AMP P N 202237 1 6 PCS _AMP P N 207377 1 1 PC OR EQUIVALENT 1352 System Connector High Level Analog I O CHO 1 2 CH8 COM 3 4 CH9 CH1 5 6 COM 2 7 8 CH10 COM 9 10 CH11 CH3 11 12 CH4 13 14 12 15 16 CH13 CH517 18 COM CH6 19 O 20CH14 COM 21 22CH15 CH7 23 e 24 COM SENSE 25 26 NC TOP VIEW GROUND MATING CONNECTOR AMP P N 499958 6 OR EQUIVALENT AC1312 Figure 2 3 2 Backplane Pin Designations 3B01 3B02 3B03 2 37 POWER SUPPLY The Series Subsystem can operate from an ac power supply or dc dc 24V input power supply mounted on the backplane or external 15V and 24V supplies can be used The power supply is bussed to all signal conditioners on the backplane Supply current is a function of the modules that are actually used see Table 2 4 1 The power supply outputs listed in the Specifications cover most cases Each power supply operat
156. re four adapter boards available to interface to specific Analog Devices families of Real Time Interface RTI boards These accessories provide a direct signal path to the appropriate RTI board There are also two Universal Interface Boards that can be used for any interconnection needs Each of these accessories can be mounted on the back of the AC1330 Rack Mount or on any flat surface See Section 3 4 for mounting details RTI INTERFACE BOARDS AC1320 AC1323 provide a direct signal connection from the 3B Series to the analog inputs and or outputs of Analog Devices RTI boards Refer to Table 4 2 1 1 to determine the correct accessory for the appropriate board The 3B Series 26 pin connector s interfaces directly with the appropriate connector for each RTI board All that is required to install the system is flat ribbon cables from the 3B Series backplane to the 26 pin connector on the board and a ribbon cable from the RTI connector to the RTI board Each interface board is configured for all analog inputs and outputs to the appropriate RTI family Analog Devices RTI products have a hardware settling time of at most 155 which delays the start of an A D conversion until the input amplifier has had time to settle after a MUX change When modules are selected from these RTI boards the modules take approximately 505 to settle to within ILSB 0 02 FSR The A D conversion delay should be lengthened by increasing the hardware dela
157. rent Inputs 4 20mA or 0 20mA Reliable Transformer Isolation 3B32 1500V CMV 160dB CMR Meets IEEE STD 472 Transient Protection SWC FUNCTIONAL DESCRIPTION Model 3B32 1s an isolated current input device that 1s designed to accept a process current 4 20mA or 0 20mA The 3B12 offers a functionally equivalent design without input to output isolation Figure 2 1 2 1 shows a functional diagram for the model 3B32 The model 3B 12 offers the same functional characteristics as the 3B32 but does not include isolation circuitry A current sensing resistor supplied with each module is connected to screw terminals 2 and 3 Input protection of up to 220V is provided for the 3B32 130V for the 3B12 on the input screw terminals The signal is then amplified and filtered to give the high level voltage output Chopper based amplification is used to assure low drift and excellent long term stability Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current output can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment through screw terminal connections Model 3B12 requires a ground return for the input connection to return the bias current to ground FINE CALIBRATION Each model is factory calibrated for a specified range to provide z
158. ro Ig V C for G gt 100 RTI Span 0 0025 reading C Current Output w r t Voltage Output Zero 0 0025 span C Span 0 002596 reading C Common Mode Voltage Input to Output 1500V pk max x6 5V5 Common Mode Rejection 2 SOHz or 60Hz Source Unbalance 160dB 90dB Normal Mode Rejection 2 50Hz or 60Hz 60dB 60dB Differential Input Protection 220V rms cont 130V rms cont Voltage Output Protection Continuous Short to Ground Current Output Protection 130V rms cont Zero and Span Adjustment Range 596 of span Input Transient Protection Meets IEEE STD 472 SWC N A Input Resistance 15 100MQ Bandwidth 3Hz 3dB or 3Hz 3dB or 10kHz 3dB 20kHz 3dB Power Supply 15V dc 24V dc Size 3 150 x 0 775 x 3 395 Environmental Temperature Range Rated Performance 25 C to 85 C Storage Temperature Range 55 C to 85 Relative Humidity Conforms to MIL Spec 202 01095 60 C noncondensing RFI Susceptibility 0 5 span error SW 400MHz 3 ft NOTES Voltage output range is determined by the module input range while the current output range is user selectable Model 3B47 does not have a current output 0 20mA range a typical minimum output current is 10 3 Accuracy spec includes the combined effects of repeatability hysteresis and linearity Does not include sensor or signal source error 3B42 3B43 3B44 have a 0 596 accuracy 3B17 has 0
159. ronously demodulated to correct for any phase shift errors from the primary to the secondaries of the LVDT eliminating the need for a phase adjustment Unlike other 3B Series modules all of the gain and zero suppression is accomplished with a screwdriver through the sliding door on top of the module The gain adjustment has a 256 1 adjustment range which is accomplished with a com bination of a digital gain set rotary switch for coarse adjustment and a fine trim potentiometer for precise calibration The zero suppression is output referred and can adjust the output over 5V from the center setting After the voltage output is calibrated the 130V AC protected current output can be independently adjusted over a 5 span range for zero and span with front panel accessible potentiometers The current output is provided on screw terminal connections Historically users of LVDTs have had to contend with various error terms For example quadrature voltages or null voltages are caused by interwinding capacitance and winding assym metries This error term is a residual ac voltage that appears at the differential output of the LVDT It is called quadrature because it appears as a 90 out of phase voltage to the output signal Another source of error is a fixed phase shift from the primary to the secondary of the LVDT This error is often accounted for by synchronizing the demodulator on a phase shifted version of the excitation In this approach th
160. sor excitation of up to 6V is provided by the modules Input protection of up to 130V for the input and excitation screw terminals is provided in each device The signal 1s then amplified and filtered to give the high level voltage output Chopper based amplification is used to assure low drift and excellent long term stability Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V input protection interfaces with user equipment through screw terminal connections FINE CALIBRATION The 3B13 is factory calibrated to operate over most of the full range of the AD590 55 C 130 C and provides zero and span accuracy of 0 1 span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage and current output The two outputs are adjusted independently and are noninteractive The following nonrecursive adjustment procedure is recommended 1 Connect model 3B13 as shown in Figure 2 1 3 1 with 2500 7 Apply lin 218 15 adjust Vz Vout 10mV Iz for IouT 40 0 016mA or the measured voltage access 1V 4mV 3 Apply 403 15 yA adjust Vs for Vour 10V 10mV Is for Ioyr 20mA 0 016mA or the measured voltage access Ry 5V 4mV If a 0 20mA output is desired I
161. ss than or equal to this value APPENDIX A2 CUSTOM RANGING RTD MODELS RTD Ranging applications can be divided into two categories depending on whether the module s internal linearizing circuit is used If internal linearization is required the following procedure applies For models 3B14 and 3B15 the module s output voltage must always be positive since the linearizing circuit is active only for Vo gt 0 The relations assume the use of a 0 to 10V output span Other output ranges are possible contact the factory for information on any other positive output range 2 Any type of RTD be used provided that its resistance does not exceed 10 0 in the range of interest and its temperature characteristic is concave down While virtually all RT Ds have these properties the conformity errors specified for these models apply specifically to 1000 platinum RTDs following the European curve a 0 00385 Conformity errors for other RTD types can be supplied by the factory 3 Ranging component values are found from 3B14 3 15 3B34 00 3B34 N 00 _ 20kQ G Gain Setting Resistor R Ls Zero Suppression Rz Resistors 3B14 Rz 3 15 Rz Q 1 3B34 00 mE 25k l Linearization Resistor x 20 0 3B34 N 00 te ee x 28 30 ARys 0 2 x 1 85 _ ARgs 1 2x10 0 1 Rz Resistance of the RTD at the temperature Tyr that is
162. sted over a 5 span range for zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equip ment through screw terminal connections Model 3B18 requires a ground return for the input connection to return the bias current to ground FINE CALIBRATION Each model is factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span The excitation voltage should be used in the calibration setup since it has a 2 tolerance User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted inde pendently and are noninteractive The following nonrecursive procedure is recommended 1 Connect model 3B18 as shown in Figure 2 1 7 1 with Ry 2500 2 Apply Vin 0 volts adjust Vz for OV 10mV and Iz for 4mA 0 016mA or the voltage measured across Ry 1V 4mV 3 Apply Vin Full Scale adjust Vs for 10V 10mV and Is for 20mA 0 016mA the voltage measured across 5V 4mV If a 0 20m output is desired for a 0 to 10V output adjust Iz for OMA 0 020mA step 2 and Is for 20mA 0 020mA in step 3 A typical minimum output current is lOL with 0 2QmA operation If the current output is to be proportional to a 10V to t 1
163. subsystems or separated system elements It provides total ground isolation and transient protection when interfacing D A converters to standard 4 20mA current loops This requirement is common in microcomputer based control systems LOOP 24V COMMON 15 15 4 20mA OR 0 20mA OUTPUT 0 TO 10V 10V INPUT FROM SYSTEM CONNECTOR MAGNETIC ISOLATION RETURN P2 Figure 2 2 1 Model 3B39 Isolated Voltage to Current Converter Functional Block Diagram 2 33 Each output module has two user programmable jumper options One option allows the user to program the current output to be proportional to either a 0 to 10V span input or a 10V to 10V input The second option allows the user to set the current output to 4 20mA or 0 20mA All output modules are shipped from the factory so that the current output is proportional to the 0 to 10V input and all current outputs are 4 20mA FINE CALIBRATION The 3 19 and 3B39 are factory calibrated to 0 1 of span for a 0 to 10V input If field calibration is required the following nonrecursive procedure is recommended 1 Connectthe3B39 3B19 as indicated in Figure 2 2 1 with 2500 2 Apply Vix OV and adjust Iz so Ig 4mA 0 016mA or the voltage measured across 4mV 3 Apply Vin 10V and adjust I so that 20mA 0 016mA or the voltage measured across 5V 4mV If a 0 20mA output is desired should be adjusted for OMA 0 020m
164. t x 5 of span 0 2sec ISMA 3nA 0 24 V rms at OHz bandwidth 50 rmsin 100kHz bandwidth 3Hz 11 5V to 16 5V 0 01 span V 12 30V 0 0002 span V 27 at FS 3 1507 x 0 775 x 3 395 25 C to 85 55 C to 85 C 010 95 60 C nnncondensing 0 5 span error SW 4 400MHz G 3 ft Fora 0 20mA range typical minimum output current is 101A Accuracy spec includes the combined effects of repestability hysteresis and linearity Does not include sensor or signal source error Includes excitation circuitry A wide range of zero suppression and custom calibration may be accomplished with ranging card 1310 24V dc power is only needed for driving the current outpui at up to 8500 If only voltage output is used or a current outpul load af 4002 or less is desired 15V is all that is required Specifications subject to change without notice ORDERING INFORMATION Range in C 2 30r4 Wire RTD 1000 Pt 0 00385 Externally Programmable 3 34 00 100 to 100 3B34 01 Oto 100 3B34 02 200 3B34 03 600 3B34 04 Range in 2 or 3 Wire RTD 100 Copper Externally Programmable 3 34 00 0 to 120 100 0 C 3B34 C 01 0 120 100 25 C 3B34 C 02 Range in C 2 3 4 Wire RTD 1200 Nickel Externally Programmable 3B34 N 00 300 3B34 N 01 GAIN SELECTION ONLY 2 Jumper Open
165. t signal determined in step 3 adjust Vs for 10V 10mV and Is for 20mA 0 016mA or the measured voltage across 5V 4mV If a 0 20mA output is desired Iz should be adjusted for lour OmA 0 020mA in step 4 and Is should be adjusted for 20mA 0 020mA in step 5 A typical minimum output current is 104A with 0 20mA operation The 3B37 might also be calibrated using an ice bath setup OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the externally programmable version of the desired module 1 e 3B37 X 00 and the AC1310 which houses user supplied resistors that determine the zero and span of the new range A special range can also be factory configured Consult the factory for details The basic transfer function of the 3B37 can be expressed as Vo Gx Vm Vz Where Vo Output Voltage G Gain Vi Input Voltage Vz Zero Suppression Voltage The output voltages for a given temperature span and ther mocouple type are available from standard tables and these values should be substituted in the above equation GAIN SETTING RELATION With the AC1310 the gain G is set by Rj which forms part of an internal divider and is determined from the following relation _ 40kO G 2 Gain G is a ratio of the change
166. than eight analog outputs are required up to two additional connectors can be installed in positions J7 and J8 J2 P O EXPANSION 77777 Figure 4 2 1 1 AC1320 Figure 4 2 1 2 AC1321 The 1321 interfaces the 3B Series to Analog Devices Motorola Bus Analog I O Boards see Figure 4 2 1 2 Connectors J1 and J2 are used to interface up to two 3B Series backplanes 32 analog inputs to the RTI 1230 and RTI 1231 with connector J3 If the two analog outputs of the RTI 1232 are to be used they are interfaced with connector J4 Connectors J5 and J7 can be used to interface 3B channels 0 3 and 4 7 respectively to up to two RTI 1262 boards If additional analog outputs are required up to two additional connectors be installed in position J6 and J8 Connector J3 can also be used to interface analog inputs only to Analog Devices RTI 1200 1250 RTI 1260 AIM03 and AIM100 Analog I O products Connectors Jl and J2 are used to interface from the 3B backplane 16 and 32 single ended inputs while connector J3 is used to interface to RTI or MACSYM products The AC1322 interfaces the 3B Series to Analog Devices analog I O boards that are compatible with Texas Instruments TM990 Bus see Figure 4 2 1 3 Connectors J and J2 are used to interface up to two 3B Series backplanes 32 analog inputs to the RTI 1240 and RTI 1241 with connector J3 If the two analog outputs of the RTI 1241 are to be used they are interfaced with co
167. that provide direct connection to many of the RTI Series products as well as MACSYM products A cable assembly 1s defined as a cable with two connectors See Table 4 2 1 2 for pertinent part numbers and descriptions Cables ADI P N 1315 AC1326 AC1327 AC1328 AC1329 AC1335 1553 1554 1555 1562 1585 6 1585 7 CCA11 Connectors ADI P N 1311 1312 1313 1314 1316 1317 1318 AC1319 1352 DAC 8 15 0 7 DAC 0 1 ADC Figure 4 2 1 3 AC1322 Description 2 26 Pin Cable Assembly 3B to RTI 1225 1226 Cable Assembly 3B to RTI 711 732 Cable Assembly 3B to RTI 724 Cable Assembly AC1323 to RTI 711 732 Cable Assembly 3B to MIO 120 Cable Assembly 50 Pin Cable Connector with 3 Cable 26 Pin Cable Connector with 3 Cable 20 Pin Cable Connector with 3 Cable 34 Pin Cable Connector with 3 Cable 3B to RTI 1260 Cable Assembly to RTI 1262 Cable Assembly 3Bto MACSYM 150 Cable Assembly Description 20 Pin Female Mating Connector 26 Pin Female Mating Connector 34 Pin Female Mating Connector 50 Pin Female Mating Connector 20 Pin Board Mounted Male Connector 26 Pin Board Mounted Male Connector 34 Pin Board Mounted Male Connector 50 Pin Board Mounted Male Connector 6 Pin dc Power Female Mating Connector cable assembly is defined as a cable with two connectors Figure 4 2 1 4 AC1323 Used With 3B01 3B03 1320 1325 3B01 3B03 3
168. the vast majority of the LVDTs on the market CALIBRATION Each model with the exception of the 3B17 00 is setup by the factory for a specified excitation voltage and frequency The voltage output must be trimmed before the current output because the large dynamic range of adjustment is accomplished in the voltage stage Once the voltage output is calibrated the current output can be independently adjusted The following procedure is recommended 1 Connect model 3B17 as shown in Figure 2 1 6 1 with R L 2500 leaving the EXC wire disconnected 2 Adjust Vz for Vo Z0V 10mV 3 Connect LVDT EXC lead and adjust the mounting scheme so the voltage output is OV 100mV If minimal response to core position is noticed first turn the rotary switch clockwise until full displacement of the core causes a change of several volts at the output The dot is at minimum gain Gain increases in the direction of the arrow on the face of the switch This centers the LVDT core travel for maximum linearity 4 Alternately position the core at both ends of travel and adjust the rotary switch to be close to the desired output span Fine tune the span with the gain adjustment poten tiometer Each stop on the rotary switch represents a doubling of gain Any gain in between two stops can be achieved by using the potentiometer 5 Adjust Vz when the core position is at center to OV 10mV Adjust Iz 4rnA 0 016mA or the voltage measured across 1V
169. tions can accommodate 14 20 gauge wire Models 3B10 3B11 3B12 3B16 and 3B18 when used with external excitation all require a ground return for the input connections to return the bias current to ground The remaining nonisolated units do not require this since the input signal is grounded internal to the module The isolated input modules do not require a return to ground since the input signal is floating User Equipment Terminations All channels are single ended and share a common reference to all other channels and to the power supply common The pinout of the system connector is shown in Figure 3 4 4 The 3B Series backplanes are readily interfaced to any user equipment by means of various interconnection boards Four interface boards are available that interface directly with Analog Devices Real Time Interface RTI Boards while there are two universal boards that are designed to satisfy most user interface needs Five of these interface boards have identical mechanical dimension 5 x 4 5 with 3 x 3 mounting holes see Figure 3 4 5 while the AC1324 has smaller dimensions See Figure 4 2 2 1 There is also a selection of 3B to RTI Cable Assemblies a cable assembly being defined as a cable with two connectors that allow direct interface with many Analog Devices RTI Boards System Connector High Level Analog I O CH 8 e CH 9 10 e o CH 11 12 13
170. uitry Points to the same maximum temperature Therefore the existing temperature rating of for the 3B subsystem remains unchanged with this report have a primary fuse of 0 5 amps A sample transformer was tested un fault The power transformer in supplies AC1307 and AC1307E are identical ARE conditions by separately shorting each secondary winding and Se ed primary voitage In all cases the 0 5 amp primary fuse open d 5 seconds Test results were satisfactory Sections 3 6 2 3 6 4 of the original Report OK5A8 AX also apply to this revision These oy Tea in sections cover Hypot Testing and electrical shock protect FM Standard No 3820 The nonincendive field wiring parameters remain the listed on System Drawing 03 0952800 B and the listing guide will be chan to Revision B Documentation Fi Document No Revision 91 1174400 Sp ion Control Drawing AC1307 02 1182100 A S tic Diagram 3B17 02 1245800 Diagram 3 18 02 1056200 B tic Diagram 3B40 41 02 1047300 B Bm Diagram 3842 3B43 3844 02 1080100 B Schematic Diagram 3B45 3B46 02 1105800 A Schematic diagram 3B47 03 0952800 B cO 3B Series Nonincendive Instal Diag won A lt iii amp E Y 2 1 UM DESCRIPTION EE INITIAL RELEASE PERERNO 2 2272 W REVISED PER ECN 19017 CAUTION FACTORY MUTUAL APPROVAL e AX gt rn R
171. und Use an output module in conjunction with an input module i e a 3B31 and a 3B39 The output of the 3B31 is the input to the 3B39 This is known as 3 port isolation I have a 3B16 strain gage module but I need bandwidth of 1kHz Can I cut out the filter inside the module A No It s not that simple What you need ia a 3B18 module How do I correspond my desired 4 20mA output with 10V to 10V or 0 to 10V output O gt All modules are shipped 4 20mA corresponding to 10V output For a 10V to 10 proportion the user would select by a jumper on the bottom of the module A jumper also exists for 0 20mA output When I plug my 00 3B module into the backplane I get 10 volts out What should I do _ Plug the configured AC1310 onto the module On our 3B RTD modules how do we linearize Do we use two endpoints worst case or what We use Tmig and Tmax three 3 points I m using 3B39 output module and have 0 to 10 input going to my screw terminals 2 and 3 but I can t get 4 20mA output Input 0 to 10V 10 to 10V is to go through or P2 26 pin connector not screw termi nals I have a 3B18 module How do I zero suppress It s not in the manual There is no zero suppression available on the 3B18 Do you have an isolated input strain gage module Not at this time the output from the 3816 18 could be put into a 3B31 though
172. uppression voltage Vz will depend upon the temperature coefficients of the resistors used in the same way that accuracy depends upon tolerance that is the total drift of R3 and will be seen through a multiplier of R3 R R3 As before the practical effect of this is that the total of the resistor temperature coefficients will be seen for small values of Vz one half the total will be seen for Vz in the vicinity of and almost no drift will be contributed by the resistors for Vz near 6V Note that for the ac input modules the top leg of the zero suppression divider R3 is an internal resistor with a value of 10 1 tolerance and a drift of 10 2 The reference voltages supplied by the module have a typical drift of less than 2Sppm C This drift will add directly to the resistor drift for any value of Vz Thus for Vz 100mV as in the example above the use of a pair of SOppm C resistors will result in a total drift of 125ppm of Vz per C or 12 5 microvolts per C This drift adds directly to the module s basic input offset drift A lower value can of course be obtained by the use of better resistors for and R3 Temperature drift in the value of the gain setting resistor will directly affect the module s gain drift Note however that the basic drift specifications for the modules include the effect of a gain setting resistor drift of lOppm C rated performance will be obtained if the drift of is le
173. urate for other input waveforms Transformer coupling is used to achieve stable galvanic isolation between input and output Both the voltage and current outputs can be independently adjusted over a 5 span range for zero and span with front panel accessible potentiometers The current output which has 130V rms output protection interfaces with user equipment through screw terminal connections FINE CALIBRATION Each model is factory calibrated for a specified range to provide zero and span accuracy of 0 5 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage output and the current output The two outputs are adjusted independently and are noninteractive The following nonrecursive procedure is recommended 1 Connect the unit as shown in Figure 2 1 12 1 with 2500 2 Apply Vin 0 volts adjust Vz for 10mV and 17 for 4 0 016mA or the measured voltage across 1V 4mV 3 Apply Vin t Field Scale adjust Vs for 10V 10mV and Is for 20mA 0 016mA or the voltage measured across 5V 4mV If a 0 20mA output is desired for a 0 to 10V output adjust 17 for lour 0 020mA in Step 2 and Is for lour 20mA Q 020mA in Step 3 A typical minimum output current 15 10 with 0 20mA operation OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A powerful custom ranging capab
174. uses user supplied resistors that determine the zero and span of the new range A special range can also be factory configured Consult the factory for details Renging Card If Used Figure 2 1 1 1 3310 and 3B11 Functional Block Diagram The basic transfer function of both the 3B10 and 11 is Vo Gx Vqm Vz Where Vo Output Voltage G Vin InputVoltage Vz Zero Suppression Voltage GAIN SETTING RELATION With the AC1310 the gain G is set by Rj which forms part of an internal divider and is determined from the following relation 3B10 3811 BGs Gain G is a ratio of the change of output to the input change that produced it Model 3B11 is a 3B10 with a 10x normal mode input attenuator The attenuation is done before the zero suppression or gain which causes a change in these relations If there is to be no zero suppression should be a jumper and should be left open These resistors should be installed as indicated in Figure 2 1 1 2 GAIN SELECTION GAIN AND ZERO ONLY SUPPRESSION Gain Resistor Gain Resistor R Jumper Zero SuppressionResistor Zero Suppression Resistor R4 Open Open Figure 2 1 1 2 3B10 and 3B11 Custom Ranging SPECIFICATIONS typical 25 C and 15V 24V dc power Mode 3810 Inputs 10mV to 5 Outputs 10V t 5 4 20mA or 0 20mA tu 0108500 Maximum Current Output Range 0 31m Accuracy 0 1 span N
175. usted over a 5 span range from zero and span with the front panel accessible potentiometers The current output which has 130V output protection interfaces with user equipment through screw terminal connections FINE CALIBRATION Each model 15 factory calibrated for a specified range to provide zero and span accuracy of 0 1 of span User accessible zero and span trim potentiometers providing a 5 adjustment range permit precise field calibration of both the voltage and current output The two outputs are adjusted independently and are noninteractive The following nonrecursive procedure is recommended 1 Connect model 3 45 3846 as shown Figure 2 1 13 1 with 2500 2 Apply Fry 0Hz adjust Vz for Vour 0V 10mV and I for 4 0 016 or the measured voltage across IV 4mV 3 Apply Fry Full Scale adjust Vs for 10V l mV and Is for 20 0 016mA on the measured voltage across 5V 4mV If a 0 20mA output is desired adjust Iz for 0 020 Step 2 and Is for lout 20mA 0 020mA in Step 3 A typical minimum output current is with 0 26mA operation ar Comparator Hysteresis Magnetic p Isolation Filter Figure 2 1 13 1 3B45 and 3B46 Functional Block Diagram OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibr
176. ut notice ORDERING INFORMATION Excitation Voltage and Frequency Externally Programmable rms 2 5kHz 5V rms 5SkHz 5V rms 7 5kHz 1 rms 10kHz The following models address differential coil applications Externally Programmable 3V rms 2 5kHz 5V rms SkHz 5V rms 7 5Hz IV rms 10kHz Model Number 3B17 00 3B17 01 3B17 02 3B17 03 3B17 04 3B17 D 00 3B17 D 01 3B17 D 02 3B17 D 03 3B17 D 04 EXCITATION VOLTAGE AND FREQUENCY SELECTION Excitation Voltage Excitation Frequency Ra Excitation Frequency Raa Open Figure 2 1 6 2 3B17 Custom Ranging MULTIPLE LVDT INSTALLATIONS LVDTs are AC devices and have potential to cause interference between units Careful installation may eliminate this in many cases For a complete discussion of wiring practices in multiple LVDT installations refer to Appendix Bl SYNCHRONIZING MULTIPLE LVDTs The 3B17 has the ability to synchronize its excitation with other 3B17s For an extended discussion of that feature please refer to Appendix B2 DIFFERENTIAL COIL CONDITIONING The 3B17 D is a version of the 3B17 designed to address differential coil applications The functional description and specifications are identical to the 3B17 The 3B17 D must be connected as shown in the diagram below And because the 3B17 D differential coil input module is intolerant of capacitive loads across the excitation terminal greater than 100
177. vely wide range of zero suppression and custom calibration may be accomplished with a cusrom ranging card 1310 24V de power is only needed for driving the current output ar up tu 85011 If only voltage output 15 used or a current output Joad of 40011 or less is desired 15V is all that is required Specifications same as 3830 Specifications subject to change without notice ORDERING INFORMATION Input Range Model Number Low Level Externally Programmable 3B30 00 10mV 3B30 01 50mV 3B30 02 100mV 3B30 03 High Level Externally Programmable 3B31 00 1V 3B31 01 5V 3B31 02 10V 3B31 03 3B30 10 to 100mV 0V t 5mA 4 20mA or 0 20mA 01085000 0 31 0 1 span 0 01 span In V C RTDI 0 0025 reading C 0 002595 span C 0 0025 reading C 3B31 0 0025 span C L60dB 50kf RP ZERO SUPPRESSION VOLTAGE The zero suppression voltage Vz can be set for any value between 3 175V and 3 175V for the 3B30 and 31 75 to 31 75V for the 3B31 through the use of and and is determined from the following relations 3B30 3831 R Vz 31 75V x V4 3 175V R2 arm with the sign of Vz determined by the choice of location positive or location B negative for see Figure 2 1 8 3 The total resistance of R3 should be approximately lOk to avoi
178. y or by software changes to assure that accurate data is obtained ADIP N Description AC1320 1225 26 60 62 Family Adapter Board AC1321 RTI 1230 31 32 Family Adapter Board Also Supports Analog Inputsfor i RTI 1200 RTI1250 RTI 1260 AIM03 and AIM100 AC1322 RTI 1240 4 1 42 43 Family Adapter Board C1323 711 24 32 Family Adapter Board IOB120 01 RTI 800 815 Family Adapter Board with Cables Used With RTI 1225 RTI 1226 RTI 1260 RTI 1262 RTI 1230 RTI 1231 RTI 1232 RTI 1200 RTI 1250 RTI 1260 AIM03 AIM100 RTI 1240 RTI 1241 RTI 1242 RTI 1243 RTI 711 RTI 724 RTI 732 RTI 800 RTI 815 Table 4 2 1 1 Adapter Boards for Analog Devices RTI Products Board with Cables The AC1320 interfaces the 3B Series to Analog Devices analog I O boards that are compatible with the STD Bus see Figure 4 2 1 1 Connector 1 is used to interface one 3B Series backplane while connector J2 is available to interface a second 3B Series backplane up to 32 analog inputs to the RTI 1260 connector J3 interfaces to the RTI 1260 Connector J4 provides a direct analog input for the RTI 1225 If the two analog outputs of the RTI 1225 are to be used they are interfaced by installing two jumpers W1 and W2 on the AC1320 This process connects the outputs to 3B channels 0 and 1 Connectors J5 and J6 provide direct analog output connections from 3B channels 0 3 and 4 7 respectively and can be used to interface to the RTI 1262 If more
179. z should be adjusted for OmA 0 020mA in step 2 and should be adjusted for Iour 20mA 0 020mA in step 3 A typical minimum output current is 0 with 0 20m operation The AD590 provides an output of and the value of Iry above is determined by the relation K C 273 15 Thus for the AD590 range 55 C 218 15 K and 130 C 403 15 K The calibration is most readily accomplished with a current source and the AD590 could be used if it can be maintained at both reference temperatures The AD590 is available in many accuracy grades with cali bration errors ranging from 0 5 C to 10 0 C It is rec ommended that the higher quality grades be used grades K L or M to assure that the 3B13 can be properly calibrated for system zero if desired The accuracy of the 3B13 does not include sensor error OPTIONAL ZERO SUPPRESSION CUSTOM CALIBRATION A wide zero suppression capability and easy field calibration are available with a plug on ranging card AC1310 If a special input range is desired it can be provided by ordering the Input ratection Renging Card If Used Figure 2 1 3 1 3B13 Functional Bloch Diagram externally programmable version of the desired module 1 e 3B13 00 and the AC1310 which houses user supplied resistors that determine the zero and span of the new range special range can also be factory configured Consult the factory for details The 3B13 is designed

User`s Manual The 3B Series Signal Conditioning I/O Subsystem

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