- 1 - User`s Manual: Series 350T Model 350T Resistance
Contents
1. 5957 300 C 212 02 21393 2 3500 229 67 23189 4009 247 04 24956 450 C 264 11 266 94 500 C 280 90 284 02 0 35509 297 39 30080 6009 313 59 317 28 6509 32051 7009 43 7500 36047 8009 375 51 38509 300 26 Note Pt385 Platinum Alpha 0 00385 Q ohm C Pt392 Platinum Alpha 0 00392 Q ohm C GENERAL MAINTENANCE The transmitter contains solid state components and requires no maintenance except for periodic cleaning and calibration verification When a failure is suspected a convenient method for identifying a faulty transmitter is to exchange it with a known good unit It is highly recommended that a non functioning transmitter be returned to Acromag for repair since Acromag makes use of tested and burned in parts and in some cases parts that have been selected for characteristics beyond that specified by the manufacturer Further Acromag has automated test equipment that thoroughly checks the performance of each transmitter OUTPUT DC POWER oc POWER SUPPLY VOLTAGE 0 5 CURRENT OUTPUT LOW PASS TRANSMITTER ADJUSTMENTS OPTIONAL GROUND INTERNAL TRANSMITTER CONFIGURATION JUMPERS SEE DRAWING 4501 293 BASIC TRANSMITTER PRECISION RESISTANCE BULB INPUT RESISTANCE BULB RTD 2 RTD RESIS2. If the calibration of the unit is to be changed first go to the Shunt Block Configuration Procedure Platinum units only not required for Copper units before going to the Transmitter Adjustment Procedure 1 Transmitter Shunt Block Configuration Procedure Platinum Units Only The Platinum RTD transmitter is quite universal in that it can be configured for any of three adjustment ranges with a single jumper Before proceeding with the adjustment procedure this jumper must be configured for the requirements of the application refer to Drawing 4501 293 for details To gain access to the Configuration Jumper first remove the transmitter from the installation Second remove the circuit boards from the plastic enclosure as described in the Disassembly Procedure below Third configure the jumper shunt block as described in the Jumper Configuration procedure below NOTE calibration per the Adjustment Procedure should be performed before the circuit boards are reassembled within the plastic enclosure Disassembly Procedure for the 350T Plastic Housing The plastic housing has no screws it snaps together A flat head screwdriver Acromag 5021 216 or equivalent is needed to pry the housing apart as described in the following steps CAUTION Do not push the screwdriver blade into the housing more than approximately 0 1 inches while prying it apart Handling of the printed circuit boards should only be done at a static free wo
3. Acromag 3 User s Manual Series 350T Model 350T Resistance Bulb RTD DC Powered Transmitters Table of Contents Page A 1 Description 1 Specifications 20 3 2 4 General 2 5 List of Drawings Page RTD Electrical Connections 4501 292 6 RTD Jumper Configuration 4501 293 7 Dimensions DIN Mounting 4501 252 8 Power Supply Configurations 4501 254 9 IMPORTANT SAFETY CONSIDERATIONS It is very important for the user to consider the possible adverse effects of power wiring component sensor or software failures in designing any type of control or monitoring system This is especially important where economic property loss or human life is involved It is important that the user employ satisfactory overall system design It is agreed between the Buyer and Acromag that this is the Buyer s responsibility ACROMAG INCORPORATED 30765 South Wixom Road PO Box 437 Wixom MI 48393 7037 USA Tel 248 624 1541 FAX 248 624 9234 Copyright 1993 1995 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 328 B95D010 INTRODUCTION These instructions cover the model types listed in Table 1 below Sup
4. ON JUMPER 15 MOVED CONFI PG 2 22 54 SN 24 NOTE ALL DIMENSIONS ARE INCHES MILLIMETERS 35 T HOUSING DIN RAIL MOUNT Pe BT re RAIL DIN MOUNTING SHOWN THIS SIDE 4 DIN EN 50035 32mm A 1 NOTE PLASTIC ENCLOSURE SNAPS TOGETHER AT SEAMS 0 984 2 45 25 0 11 43 2 1 H WIRE INSERTION CLAMPS 1 6 PLACES 1 t RAIL DIN MOUNTING SHOWN THIS SIDE 3 DIN EN 50022 35mm RAIL DIN MOUNTING SHOWN HERE DIN 50035 32mm RAIL DIN MOUNTING SHOWN HERE DIN EN 50022 35mm 6 79 0 1 55 39 4 SCREWDRIVER SLOT FOR 286 REMOVAL FROM RAIL NOTE ADJACENT UNITS CAN BE MOUNTED 73 41 ON 1 0 INCH 25 4mm CENTERS 3 35 5 85 09 3 55 90 17 ENCLOSURE DIMENSIONS FOR DIN RAIL MOUNTING ee eye Avgnes NOTE ALL TRANSMITTERS IN THIS CONFIGURATION SHARE OUTPUT COMMON CONNECTION WITH THE POWER SUPPLY gt 5 x CURRENT Y Road NOTE THE COMBINATION OF A SERIES 550 TRANSMITTER AN AC POWERED SUPPLY PROVIDES THREE WAY ISOLATION SPAN ERG INPUT OUTPUT AND POWER OUTPUT DC SUPPLY 12 5 to 36V DC POWER F GROUND CONSULT FACTORY INPUT INPU FOR SUPPLY OPTIONS 115V AC 230V INPUT INPUT SERIES 350 SERIES 350T SERIES 350 SERIES 350 SERIES 550 SERIES 350T TRANSMITTER
5. TANCE 3 WIRE RTD 4 RTD W LOOP COMPENSATION RTD TRANSMITTER INPUT CONNECTIONS GROUND REVERSE POLARITY PROTECTION ZERO SPAN ADJUST ADJUST SIGNAL AMPLIFIER CURRENT UMITER OUTPUT AMPLIFIER SIGNAL ISOLATION OPTIONAL LINEARIZER Te UNITS OUTPUT POWER SUPPLY SUPPLY ISOLATION SERIES 35 T SIMPLIFIED SCHEMATIC SERIES 5501 RTD ELECTRICAL CONNECTIONS ape 4 WIRE RTD KELVIN TYPE etH H Acromag I M 350 ELECTRICAL CONNECTIONS oF 191 994501 292 4 Se POINTS amp B ON LEFT SIDE amp ON RIGHT SIDE E BOARD INTERCONNECTION ZERO RANGE SELECTION SEE NOTE 2 ZERO RANGE 50 TO 50 1 2 ZERO RANGE 5 TO 150 C PIN 3 TO PIN 4 ZERO RANGE 150 50 5 6 MODEL amp SERIAL NUMBER EXAMPLE CONFIGURATION RTD ZERO RANGE 50 50 1 8 BOARD INTERCONNECTION ZERO RANGE SELECTION ONE JUMPER PLATINUM RTD ONLY DISASSEMBLY SEE NOTE 1 JUMPER CONFIGURATION SEE NOTE 1 kM SERIES 3507 RTD JUMPER CONFIGURATION mans MODULE MUST PE RECALBRATED WHEN ZERO te _ 350 RTD TEE GURATI
6. TRANSMITTER TRANSMITTER TRANSMITTER TRANSMITTER TRANSMITTER w 12 ac Lo NOTE INPUT GROUND G TERMINAL 15 NOT CONNECTED INTERNALLY SERIES 350T SERIES 350T SINGLE TRANSMITTER TO POWER MULTI TRANSMITTER POWER SUPPLY CONNECTIONS SUPPLY CONNECTIONS 1 OPTION metres 2 OPTION POWER SUPPLY CONFIGURATIONS ELECTRICAL CONNEGTIONS 191 4501 254
7. d zero ranges are adjustable as specified below NOTE Accuracy is in percent of Input Temperature Span RBP1 Platinum RTD 1000 Accuracy Range Span 25 100 C Zero 50 to 50 0 1 Range Span 25 100 C Zero 50 to 150 C 0 1 Range C Span 25 100 C Zero 150 to 50 C 0 2 RBP2 Platinum RTD 1000 Accuracy Range A Span 50 200 Zero 50 to 50 0 1 Range Span 50 200 C Zero 50 to 150 C 0 1 Range Span 50 200 CG Zero 150 to 50 C 0 2 RBP3 Platinum RTD 100Q Accuracy Range Span 200 800 Zero 50 to 50 Accuracy 200 400 Spans 0 1 Accuracy 400 800 C Spans 0 5 Range Span 200 800 Zero 50 to 150 200 400 0 2 400 800 0 7 RBP3 Platinum RTD 1000 Range Span 200 800 C Zero 150 to 50 C Accuracy 200 400 Spans 0 2 Accuracy 400 800 C Spans 0 3 Transmitter performance is per the temperature range specified see specifications for temperature ranges above INPUT Copper RTD 10 ohm RBCx 10 ohm Copper Resistance Temperature Sensor RTD 2 or 3 wire connection Standard calibration is based on a Copper RTD 9 035 ohms at 0 C Maximum excitation is 1 5mA DC The span and zero adjustment range is a function of the RTD range code The input span and zero ranges are adjustable as specified below except for spec
8. e Time For a step input the output reaches 98 of output span in 350ms typical Noise Rejection Common Mode 120dB 60 Hz 100 ohm unbalance typical Normal Mode 26dB 60 Hz 100 ohm source 20dB 60 Hz 10 ohm source RFI Resistance Less than 0 5 of output span effect with RFI field strengths of up to 10V meter at frequencies of 27MHz 151MHz and 467 MHz per SAMA PMC 33 1 Test Procedures EMI Resistance Less than 0 25 of output span effect with switching solenoids or commutator motors Surge Withstand Capability SWC Input Output terminations are rated per ANSI IEEE C37 90 1978 Unit is tested to standardized test waveform that is representative of surges high frequency transient electrical interference observed in actual installations Construction Printed Circuit Boards Military grade FR 4 epoxy glass circuit board Terminals Compression type wire size 14 AWG maximum Case Self extinguishing NYLON Type 6 6 polyamide thermoplastic UL94 V 2 color black General Purpose NEMA Type 1 enclosure Printed Circuit Board Coating Fungus resistant acrylic conformal coat Mounting Position Position insensitive MOUNTING DIN General Purpose Housing DIN Rail Mount amp T rails Rail 32mm EN50035 Rail 35mm Type EN50022 Refer to Drawing 4501 252 for outline and clearance dimensions Shipping Weight 1 pound 0 45 Kg packed CERTIFICATION Consult the factory for curr
9. e lower arm of the connector and pull downwards while applying outward pressure to the bottom of the unit Rail 32mm EN50035 To attach a transmitter to this style of DIN rail angle the unit so that the upper groove of the adapter hooks under the top lip of the rail Firmly push the unit towards the rail until it snaps solidly into place To remove a transmitter pull the lower part of the unit outwards until it releases from the rail lift unit from rail Electrical Connections The wire size used to connect the unit to the control system is not critical All terminal strips can accommodate wire from 14 to 26 AWG Strip back the insulation 1 4 inch on each lead before installing it into the terminal block Input wiring may be either shielded or unshielded twisted pair Output wires should be twisted pair Since common mode voltages can exist on signal wiring adequate wire insulation should be used and proper wiring practices followed It is recommended that output and power wiring be separated from the signal wiring for safety as well as for low noise pickup 1 Power Connect DC power supply per connection diagram refer to Drawing 4501 292 These transmitters operate from DC power supplies only Power supply voltage is not critical and normally should be from 10 0V to 36V DC The supply voltage must not exceed 36 Volts even instantaneously and must be adequate to furnish full scale current or voltage to the load Va
10. ed to be used as functional components that provide the user with a modular approach to the varied applications in the field The Series 350T complements the Acromag Series 250T two wire transmitter line providing the same input conditioning for three wire applications That is Series 350T transmitters require separate power supply connection while the output signal and DC power share a common lead The small package size low power requirements and wide supply range offers maximum flexibility to the system designer As a three wired DC powered device it can also be used in critical applications that require the use of redundant supplies Series 350T Transmitter User s Manual RTD Platinum Copper The Series 350T includes reverse polarity protection current limiting and operates from a single 10V to 36V DC supply In applications requiring only a single transmitter the 350 can use available DC power or it can be wired to an optional Series 35PS power supply module The Series 35PS power supply module receives it s power from either 115V AC or 230V AC Applications requiring multiple transmitters at a single location can more efficiently share a single DC supply The modular approach of this design and companion Acromag flat pack modules allows additional transmitters input modules isolators and alarms to be easily integrated as required See Drawing 4501 292 for a simplified Series 350T schematic Input wiring is insert
11. ed in the bottom of the unit while output and power wiring is inserted at the top of the unit Screws to secure the wiring are located on the front panel Connectors are screw clamp type and accept wire size up to 14 AWG SPECIFICATIONS Function This family of isolated DC Voltage powered transmitters condition either a 100 ohm Platinum RTD ora 10 ohm Copper RTD input The unit converts the input signal to a process current or voltage output and provides RTD excitation lead wire compensation linearization and isolation The output and DC power share a common terminal 3 Wire connection Wide range zero and span adjustments utilize 22 turn potentiometers which are accessible from the front of the unit This transmitter is DIN rail mounted MODEL SERIES 350T Color coded with a white label INPUT Platinum RTD 100 ohm RBPx 100 ohm Ro Platinum Resistance Temperature Sensor RTD 2 3 or 4 wire connection Standard calibration is based on the international R versus T curve having an alpha of 0 00385 ohms ohm C Pt 385 The unit can also be calibrated for sensors having an alpha of 0 003925 ohms ohm C Pt 392 Maximum excitation current is 1 0mA DC 0 5mA for RBP3 The span and zero adjustment is a function of the RTD range NOTE Linearization is maintained for any calibration within defined range For Platinum units the input range is field selected by means of an internal field configurable jumper Input span an
12. ent information on the availability of agency e g Canadian Standards Association Factory Mutual etc approvals NCR No Certification Required INSTALLATION The transmitter is packaged in a general purpose type of enclosure Use an auxiliary enclosure to protect against unfavorable environments and locations Maximum operating ambient temperatures should be within 13 to 185 F 25 to 85 C for satisfactory performance If the unit is factory calibrated it is ready for installation Connect as shown in the connection diagram of Drawing 4501 292 If the unit is not factory calibrated refer to the CALIBRATION section Mounting Mount transmitter assembly refer to Drawing 4501 252 for mounting and clearance dimensions DIN Rail Mounting Using suitable fastening hardware secure the DIN rail to the designated mounting surface A transmitter can be mounted to either the T or G Rail Installation of the transmitter to the rail depends on the type of DIN rail used Units can be mounted side by side on 1 0 inch centers if required Series 350T Transmitter User s Manual RTD Platinum Copper Rail 35mm EN50022 To attach a transmitter to this style of DIN rail angle the top of the unit towards the rail and locate the top groove of the adapter over the upper lip of the rail Firmly push the unit towards the rail until it snaps solidly into place To remove a transmitter insert a screwdriver into th
13. ial ranges which are factory calibrated per customer requirements NOTE Accuracy is in percent of input temperature span 2 5 Accuracy RBC1 Span 50 100 Zero 50 to 50 0 25 2 Span 100 200 Zero 50 to 50 0 25 Transmitter performance is per the temperature range specified see specifications for temperature ranges above Isolation The input circuit is electrically isolated from the output and power circuits allowing the input to operate at up to 250V AC or 354V DC off ground on a continuous basis will withstand 1500V AC dielectric strength test for one minute without breakdown This complies with test requirements outlined in ANSI ISA S82 01 1988 for the voltage rating specified Lead Wire Compensation A 100 ohm Platinum RTD Zero shift is less than 0 01 per ohm of lead resistance for up to 10 ohms per leg with a total maximum shift of 0 1 B 10 ohm Copper RTD Zero shift is less than 0 05 per ohm of lead resistance for up to 10 ohms per leg with a total maximum shift of 0 5 OUTPUT Process Current or Voltage output The output shares a with the power supply Voltage outputs are designed to provide true voltage output with zero volts included and to be stable with capacitive loads Y 4 to 20mA DC see Load Resistance Range Equation of the following page 0 0 to 10V DC into 10 000 ohms or greater V5 0 to 5V DC into 5 000 ohms or greater Load Resistance Ra
14. mper positions are marked A B and C on the circuit board corresponding to sub range A B and C 2 Important Mark the Transmitter s Configuration on the calibration label located on the enclosure Example IN RBP1 Range B 0 100 C Jumper Configuration Example The following is the configuration for the example below configure your module as required by your application Configure internal jumper as follows A 1 sub range A Zero 50 to 50 C Span 25 to 100 C B Mark label with range selected 2 Transmitter Adjustment Procedure The calibration example below is used for reference only Calibration is essentially the same for units with other inputs Connect the transmitter as shown in the Connection diagram Drawing 4501 292 The resistance decade box must be adjustable over the entire input range of the unit and settable to an accuracy of 0 1 or better The power supply voltage must be between 8 and 36 VDC at the terminals of the transmitter The output voltage must be measured to 0 1 accuracy or better for proper results The Zero and Span adjustments are accessible on the front panel of the transmitter see Drawing 4501 292 for their location The screwdriver blade used to adjust the potentiometers should not be more than 0 1 inch 2 54mm wide The resistance representing the temperatures at Zero and at Full Scale are set on the resistance source to obtain the two calibration points Use Table 2 to con
15. nge Equation Y output option The maximum load resistance for 20mA compliance is a function of input supply voltage as follows R Load Maximum Minimum VDC supply 2 5V 0 02A At 10 0V DC supply R Load 0 to 375 ohms At 12 5V DC supply R Load 0 to 500 ohms At 15 0V DC supply R Load 0 625 ohms At 24 0V DC supply R Load 0 to 1075 ohms Output Limiting Voltage units 150 of full scale output nominal Current units 125 of full scale output nominal Series 350T Transmitter User s Manual RTD Platinum Copper Output Ripple Less than 0 1 of the maximum output span Power An external DC power supply is required between the output P and terminals Transmitter current is for rated supply inputs full scale output and no load on voltage output units Diode on transmitter provides reverse polarity protection CAUTION Do not exceed 36V DC peak to avoid damage to the transmitter A Process Current Output Y 10 0V to 36 0V DC 30mA 35mA at current limit Voltage Output 0 12 5V to 36 0V DC 9 maximum C Voltage Output V5 10 0V to 36 0V DC 9mA maximum Power Supply Effect DC Volts less than 0 001 of output span per volt DC for rated power supply variations 60 120 Hz ripple less than 0 01 of span per volt peak to peak of power supply ripple RTD Break Detection Upscale RTD break detection is standard Reference Test Conditions A 100 ohm 3 wire Plati
16. num 0 100 C Alpha 0 00385 Output Y units 4 20mA DC 500 Ohm load Output Vx units 0 10V DC into 10K ohms or greater Ambient 77 F 25 C 15V DC supply B 10 ohm 3 wire Copper 9 035 ohms at 0 C 0 to 100 C Output Y units 4 20mA DC 500 Ohm load Output Vx units 0 10V DC into 10K ohms or greater Ambient 77 F 25 C 15 DC supply Accuracy A function of input range Accuracy is listed adjacent to range specification and includes the combined effects of transmitter repeatability hysteresis terminal point linearity and adjustment resolution Does not include sensor error Linearization The unit linearizes the Platinum RTD signal to provide an output signal that represents the percent of span value of the measured temperature The linearization circuit is universal for the model type ordered it allows freedom to calibrate to any input range and linearization will be functional Per manufacturers tables the Copper sensor is linear between 50 C and 150 C Ambient Temperature Range 13 F to 185 25 to 85 Ambient Temperature Effect Combined effects of zero span over temperature RBP Less than 0 01 of output span per F 0 018 per C over ambient temperature range for reference test conditions RBC Less than 0 025 of output span per F 0 045 per C over ambient temperature range for reference test conditions Bandwidth at 3 Hz typical Respons
17. plementary sheets are attached for units with special options or features Table 1 A Model Number Format 350T Input Output Mounting Display Certification B Typical Model Number 350T RBP1 Y DIN NCRC Mtg Cert Calib Display 2 40 Approval eers vs eeoa f Notes Table 1 1 Models RBP1 RBP2 and RBP3 and Models RBC1 and RBC2 can be ordered with or without factory calibration C option All other input types automatically include calibration to the customer s specification no C needed Any customer specified calibration information will be included on a separate calibration label on the unit 2 Consult the factory for current information on agency e g Canadian Standards Association etc approvals DESCRIPTION These DC powered transmitters condition either a 2 3 or 4 wire 100 ohm Platinum Resistance Temperature Sensor RTD or a2 or 3 wire Copper RTD input and convert the signal to a process current or voltage output Input circuit isolation is standard The unit provides excitation to the sensor lead wire compensation linearization and wide range zero and span adjustments These transmitters are RFI and EMI protected operate over large temperature ranges and feature excellent temperature coefficients which minimize the effects from the plant environment The 350T Series are DIN rail mounted transmitters design
18. riations in power supply voltage above the minimum required or load resistance have negligible effect on transmitter accuracy Refer to POWER in the preceding SPECIFICATIONS section for current requirements The minus power supply lead and the minus output lead share a common terminal This device includes input current limiting and reverse polarity protection Refer to Drawing 4501 254 for other power supply configurations 2 Output Connect output per connection diagram refer to Drawing 4501 292 Load range is a function of the module s output type refer to Output in the preceding SPECIFICATIONS section The output shares a common with the power supply 3 Grounding The transmitter in the General Purpose Housing is plastic and does not require an earth ground connection 4 Input Connect input per connection diagram refer to Drawing 4501 292 Be sure to observe proper polarity see label for input type If unit is factory calibrated the calibration label indicates range of input NOTE The input circuit is electrically isolated from the output and power circuits allowing the input to operate up to 250V AC or 354V DC off ground on a continuous basis CALIBRATION A TRANSMITTER This section provides information for unit configuration and calibration If the unit was factory calibrated jumpers have been placed in their proper positions and verification of the calibration can be made per the Adjustment Procedure
19. rkstation otherwise damage to the electronics could result 1 To begin disassembly refer to Drawing 4501 293 place the screwdriver at point A left side of the transmitter While pressing the blade into the seam use a twisting motion to separate the sides slightly Repeat this operation at point B 2 Now that the two pieces have been partially separated use the screwdriver blade to work the left side of the package loose by working around the transmitter and carefully prying the sides further apart Repeat this action until it is easy to remove the left side from the plastic pins holding the pieces together 3 Repeat this operation for the right side starting at points C amp CAUTION If the two pc boards become separated while taking the package apart re align the boards making sure that the two headers pins and sockets at locations E and F are properly aligned and carefully push the boards back together Series 350T Transmitter User s Manual RTD Platinum Copper Jumper Configuration Shunt Block A shunt block is provided to accommodate in field configuration changes for the Platinum unit In case of misplacement additional shunt blocks may be ordered from the factory When ordering additional shunt blocks refer to Acromag Part Number 1004 332 1 Zero Range Determine the Zero Range that is required by your application refer to the table on Drawing 4501 293 for proper jumper shunt position Ju
20. vert each temperature to its equivalent resistance for the RTD type used Transmitter Calibration Example MODEL 350T RBP1 Y DIN NCR Input 0 to 100 C 100 00 to 138 50 Platinum RTD PT 385 Output 4 to 20 DC 1 Set the input resistance decade to 100 0 ohms 0 09 Adjust the Zero Z pot until the output reads 4 000mA 2 Set the input resistance decade to 138 5 ohms 100 C Adjust the Span S pot until the output reads 20 000mA 3 Repeat steps 1 and 2 above until the readings converge The instrument is now calibrated Several mid point values should be checked to verify proper operation of the transmitter 4 After the above calibration procedure is complete install the transmitter PC Board assembly back into its case as described in the assembly procedure below Assembly Procedure for the 350T Plastic Housing Note The Model Serial Number is attached to the left side 1 Refer to drawing 4501 088 and line up the left plastic side with the board and terminal assembly Carefully but firmly press the pieces together 2 Before installing the right side place the mounting bracket unique to the mounting type you have around the pins at the back of the housing 3 Line up the right side of the housing with the assembly and carefully but firmly press the pieces together Table 2 Temperature Versus Resistance Temperature 85 1392 9 0350 00 11509 39 71 3868 100 c 6025
Download Pdf Manuals
Related Search