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SC-2311 User Manual - National Instruments

1. 5B Series Module Each Current Requirement at 5 VDC 5B30 30 mA 5B31 30 mA 5B40 30 mA 5B41 30 mA 5B32 30 mA 5B34 30 mA 5B35 15 mA 5B36 15 mA 5B37 30 mA 5B38 200 mA 5B42 200 mA National Instruments Corporation C 1 SC 2311 User Manual Appendix C SC 2311 User Manual Power Requirements for the SC 2311 with 5B and SSR Series Modules Table C 1 5B Series Current Requirements Continued 5B Series Module Each Current Requirement at 5 VDC 5B45 110 mA 5B46 110 mA 5B47 30 mA Table C 2 SSR Series Current Requirements SSR Series Module Each Current Requirement at 5 VDC SSR IDC 5 10 mA SSR IAC 5 10 mA SSR IAC 5A 10 mA SSR ODC 5 10 mA SSR OAC 5 10 mA SSR OAC 5A 10 mA C 2 ni com Technical Support Resources Web Support National Instruments Web support is your first stop for help in solving installation configuration and application problems and questions Online problem solving and diagnostic resources include frequently asked questions knowledge bases product specific troubleshooting wizards manuals drivers software updates and more Web support is available through the Technical Support section of ni com NI Developer Zone The NI Developer Zone at ni com zone is the essential resource for building measurement and automation systems At the NI Developer Zone you can easily access the latest e
2. Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 37 SC 2311 User Manual 5B Series Module Data Sheets Appendix B 5B Series Module Data Sheets 5B42 Isolated Process Current Input Functional Description The 5B42 is a single channel signal conditioning module that interfaces with two wire transmitters providing an isolated regulated 20 V supply voltage The module filters and amplifies the 4 to 20 mA process current input to produce an accurately scaled low noise low impedance output of 1 to 5 V or 2 to 10 V True Three Port Isolation The floating differential input circuit on the field side eliminates the need for any input grounding Signal and power isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal True three port isolation Input Output Power includes common mode ratings of 1500 V rms between input and output and input and power 250 V rms between power and output no return path is required between the power and signal output commons Accurate and Stable Performance The 5B42 maintains accuracy over the wide operating temperature range of 40 C to 85 C through design for low parameter drift This enables the modu
3. 1 to 20 V 0 5 to 20 V custom Figure 2 5B30 and 5B31 Input Field Connections Output Ranges e 5B30 5B31 5 V to 5 V or 0 to 5 V National Instruments Corporation B 3 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B30 and 5B31 Specifications Description Model 5B30 Model 5B31 Input Ranges Standard Ranges 10 mV to 100 mV 1 V to 20 V Custom Ranges 5 mV to 500 mV 0 5 V to 20 V Output Ranges RL gt 50 kQ 5 V to 5 V or 0 V to 5 V Accuracy Initial 25 C 0 05 Span 10 uV RTI 0 05 0 05 Span 0 2 mV RTI Vz 0 05 Vz Nonlinearity 0 02 Span Input Offset vs Temperature 21 uV c 20 uV C Output Offset vs Temperature 20 uV C 7 Gain vs Temperature 25 ppm of Reading C 50 ppm of Reading C Input Bias Current 23 nA 20 2 nA Input Resistance Power On 5MQ 650 kQ Power Off 40 KQ 650 kQ Overload 40 kQ 650 KQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 2 uV rms 2 uV rms Output 100 kHz Bandwidth 200 uV rms Bandwidth 3 dB 4 Hz x Output Rise Time 10 to 90 200 ms Span Common Mode Voltage CMV Input to Output Continuous 1500 V rms maximum Output to Power Continuous 3 V maximum Transient ANSI TEEE C37 90 1 1989 Common Mode Rejection CMR 1 kQ Source Imbalance 50 60 Hz 160 dB all ranges 160 dB span lt 2 V 150 dB span 10 V Normal Mode Rejection 50 60 60 dB Hz SC 2311 User Manual
4. Chapter 2 Configuring and Setting Up the SC 2311 can become impaired if the device becomes damaged in any way If the device is damaged turn the device off and do not use it until service trained personnel can check its safety If necessary return the device to National Instruments for service and repair to ensure that its safety is not compromised Do not operate this equipment in a manner that contradicts the information specified in this document Misuse of this equipment could result in a shock hazard Do not substitute parts or modify equipment Because of the danger of introducing additional hazards do not install unauthorized parts or modify the device Return the device to National Instruments for service and repair to ensure that its safety features are not compromised You must insulate all of your signal connections to the highest voltage with which the SC 2311 can come in contact When using the device with high common mode voltages you must insulate your signal wires for the highest input voltage National Instruments is not liable for any damages or injuries resulting from inadequate signal wire insulation Use only 26 14 AWG wire with a minimum voltage rating of 300 V and a temperature value of 60 C for measuring up to 300 V When connecting or disconnecting signal lines to the SC 2311 screw terminals make sure the lines are powered off Potential differences between the lines and the SC 2311 ground can create a shoc
5. Figure 2 1 SC 2311 Top Cover Removal SC 2311 User Manual 2 2 ni com Chapter 2 Configuring and Setting Up the SC 2311 a o i sc p ON te oh H3 CE INSTRUMENTS amaro val El E e aE HTT uo o pexe 9 Oca am slo B da I H E Ont C ORD 20 Gu Q 0000 0990 ol o a o a O ol oooo oon of Slad gi 13 naco U m69 Can Jel osea C o ao os o e Eo a tusmes O O AtstNsE oj OH Ei P pmo O illis 999 990 ole d e Er a mxo 2 O facris m xc Fo 5 8 5 vines O dace me eom Bout Oo jexc4 ont ang o o Bacu o6 Hia O4 us B 9 piney a O 0000 o 4 olla A 3 rey nc o lens 9900 oon of 5 7j Ro i JD ioll o Be sees PEE Eu O Jacue ou Fa 8 B uoo 9009 000 j obs IE i ee o zO ES 7 0000 oon o q o u WED Cr O p ma O O e Qe ts o exc wd i e i o el SOOO stes NE olia mw Fe 3i no Bis i maci O atsense V m6 GO Lir ee ES ul O o lacna EI O txt4 fo a creim O OWS o Jat no ooo g O facets BOO 9 OF se LO Li Umso O lacne 9 ou so n 0000 oon ofl 8 ul P Eum akd o 2 169 Gun f oO 5 O acer Eus e
6. Power Supply Sensitivity RTI Mechanical Dimensions Environmental Temperature Range 22 uV Vs 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Rated Performance Operating Storage 25 C to 85 C 40 C to 85 C 40 C to 85 C Relative Humidity RFI Susceptibility o to 93 9 40 C noncondensing 0 5 Span error 400 MHz 5 Watt 3 ft Tz is the nominal input current that results in a 0 V output Includes the combined effects of repeatability hysteresis and nonlinearity and assumes R gt 50kqQ Does not include current to voltage input resistor AC1362 error 3The output common must be kept within 3 V of power common 4Loads heavier than 50 kQ will degrade nonlinearity and gain temperature coefficient 5The current to voltage conversion resistor AC1362 is supplied as a plug in component for mounting external to the module All backplanes and mounting cards provide pin sockets for mounting the AC1362 resistor Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 9 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B34 Isolated Linearized RTD Input Functional Description The 5B34 is a single channel signal conditioning module that amplifies protects filters linearizes and isolates a wide variety of two and three wire RTDs For true four wire
7. RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft Specifications same as model 5B45 Jumper selectable Refer to Field Connection diagram Includes the combined effects of repeatability hysteresis and nonlinearity Loads heavier than 50 k Q will degrade nonlinearity and gain temperature coefficient 3 The Output Common must be kept within 3 V of Power Common Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved SC 2311 User Manual B 46 ni com Appendix B 5B Series Module Data Sheets 5B47 Isolated Linearized Thermocouple Input Functional Description The 5B47 is a single channel signal conditioning module that interfaces amplifies and filters J K T E R S and B type thermocouple The module provides an isolated and protected precision output of 0 to 5 V The 5B47 internally linearizes its input signal to provide an output that is linear with temperature Accuracy for each type of sensor is specified in the 5B47 model table See Model 5B37 for non linearized conditioning of thermocouple signals Accurate and System Ready Internal cold junction compensation largely corrects errors arising from parasitic thermocouples formed by thermocouple connection to the input screw terminals providing an accuracy of 0 25 C 25 C ambient temperature The module generates a predictable upscale signal to indicate an open thermoc
8. SC 2311 User Manual parts per million the technique used on a DAQ device to keep a continuous buffer filled with data so that when the trigger conditions are met the sample includes the data leading up to the trigger condition the amount of time required for a signal to pass through a circuit a form of counter signal generation by which a pulse is output when a counter reaches a certain value the inherent uncertainty in digitizing an analog value due to the finite resolution of the conversion process signal sources with voltage signals that are referenced to a system ground such as the earth or a building ground Also called grounded signal sources a measure in LSB of the accuracy of an ADC It includes all nonlinearity and quantization errors It does not include offset and gain errors of the circuitry feeding the ADC the smallest signal increment that can be detected by a measurement system Resolution can be expressed in bits in proportions or in percent of full scale For example a system has 12 bit resolution one part in 4 096 resolution and 0 0244 of full scale the difference in time between the 10 and 90 points of the step response of a system root mean square the square root of the average value of the square of the instantaneous signal amplitude a measure of signal amplitude referenced single ended mode all measurements are made with respect to a common reference measurement system or a ground Also
9. You can insert and use the SSR ODC 5 in any of the eight SSR sockets inside the SC 2311 SC 2311 User Manual 4 6 ni com Specifications All specifications are typical at 25 C unless otherwise specified SC 2311 Analog Inputs Number of channels Input characteristics ses Digital 1 0 Number of channels ccccceeeseeeeees T O characteristics esee Physical Dimensions Weight without modules or panelettes National Instruments Corporation A 1 Eight 5B Series modules NRSE inputs Or Eight unconditioned differential inputs or 16 unconditioned single ended inputs See Appendix B 5B Series Module Data Sheets 8 SSR Series modules or 8 unconditioned DIO lines See the SSR Series section in this appendix 30 7 by 25 4 by 8 6 cm 12 1 by 10 by 3 4 in 2 0 kg 4 3 pounds SC 2311 User Manual Appendix A Specifications for SC 2311 Environment Safety Operating temperature ss 0 to 55 C Storage temperature sees 20 to 70 C Relative humidity esse 10 to 9096 noncondensing Designed in accordance with IEC61010 01 UL 3111 1 and CAN CSA C22 2 No 1010 1 for electrical measuring and testing equipment For use at altitudes up to 2000 m Installation Category II Pollution Degree 2 Electromagn
10. o o ooo PO Sem BE og ET eoi 9 wr wo o aie 0000 000 a offi p cmi O f acne Q000 con ol aL o ee HO fo o ooo o o jj es eon mus o e Lo 4 ol O Te OH fe 0000 000 J ofa o o o 2000 oon AI 12 ct Coren 1 SW5 3 SW3 5 SSR Series Modules 7 Safety Ground 2 SW4 4 5B Series Modules 6 SW2 Figure 2 2 SC 2311 Parts Locator Diagram National Instruments Corporation 2 3 SC 2311 User Manual Chapter 2 Configuring and Setting Up the SC 2311 Setting SW5 Setting SW5 to the AIGND AISENSE SHORT position allows the E Series DAQ device to operate in nonreferenced single ended NRSE mode Use this switch setting when you are using 5B Series modules to take measurements In this mode AIGND connects the negative input to the PGIA on the E Series DAQ device through the AISENSE pin as shown in Figure 2 3 SEES E Series DAQ Device in NRSE Mode 5V ACHO t 5 NI PGIA e Dx T 1 DIFF NRSE 28 Gain Amplifier INX HE 2 gt c ACH15 INX gt AIGND o AISENSE SWS ps AIGND XZ i Setting SW4 Setting SW3 SC 2311 User Manual Figure 2 3 NRSE and RSE or DIFF Mode Circuits When the E Series DAQ device operates in referenced single ended RSE or differential DIFF mode set SW5 to NC When SWS is in the NC position it breaks the connection between AISENSE and AIGND as shown
11. 4 4 300 V Category II ni com 5B Series Module Data Sheets This appendix contains the manufacturing data sheets of Analog Devices Corporation The Analog Devices 5B Series modules data sheets included are the following 5B30 5B31 5B32 5B34 5B35 5B36 5B37 5B38 5B40 5B41 5B42 5B45 5B46 5B47 1 Copyright Analog Devices Inc 1995 2000 Reprinted with permission of the copyright owner All rights reserved Analog Devices Inc from Analog Devices Web Site www analog com National Instruments Corporation B 1 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B30 5B31 Millivolt and Voltage Input Functional Description The 5B30 and 5B31 are single channel signal conditioning modules that amplify protect filter and isolate analog input voltages The 5B30 and 5B31 protect the computer side from damage due to field side overvoltage faults All models withstand 240 V rms at their input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions In addition 5B30 and 5B31 Series modules are mix and match and hot swappable so can be inserted or removed from any socket in the same backplane without disrupting system power Inside 5B30 5B31 Modules A chopper stabilized input amplifier provides low drift and stable gain At the amplifier input a stable laser trimmed zero scale input voltage is subtracted from the input signal t
12. 5 V Accurate and System Ready Internal cold junction compensation largely corrects errors arising from parasitic thermocouples formed by thermocouple connection to the input screw terminals providing an accuracy of 0 25 C 25 C ambient temperature The module generates a predictable upscale signal to indicate an open thermocouple for a downscale response connect a 47 MQ 0 25 W resistor across screw terminals 1 and 3 The 5B37 protects the computer side from damage due to field side overvoltage faults All models withstand 240 V rms at their input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions Further the 5B37 is mix and match and hot swappable with other 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power Inside the 5B37 Module A chopper stabilized input amplifier provides low drift and stable gain At the amplifier input a stable laser trimmed zero scale input voltage is subtracted from the input signal to set the zero scale value For user convenience the zero can be optionally factory set to meet custom needs This allows suppression of a zero scale input value many times larger Internal multi pole lowpass filtering with a four Hz cutoff 3 dB provides 60 dB of normal mode rejection noise on signal and enhancement of common mode rejection noise on signal return at 60 Hz enabling accurate
13. Figure 2 5B34 Input Field Connections National Instruments Corporation B 11 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B34 Specifications typical 25 C and V 5 V dc Description Model 5B34 Input Ranges Standard Ranges Refer to Model Table Custom Ranges Output Range RL gt 50 KQ 200 C to 850 C 100 2 Platinum 80 C to 320 C 120 Q Nickel 100 C to 260 C 10 Copper 0 V to 5 V Accuracy Initial 425 C Conformity Error Input Offset vs Temperature Output Offset vs Temperature 0 05 Span 0 04 0 05 Rz 0 05 Span 0 02 C C 20 uV C Gain vs Temperature Input Bias Current 0 005 of Reading C 3 nA Input Resistance Power On 5MQ Power Off 40kQ Overload 40 k Noise Input 0 1 Hz to 10 Hz Bandwidth Output 100 kHz Bandwidth Bandwidth 3 dB Output Rise Time 10 to 90 Span 0 2 u V rms 200 uV rms 4Hz 200 ms Common Mode Voltage CMV Input to Output Continuous Output to Power Continuous Transient 1500 V rms maximum 3 V maximum ANSI TEEE C37 90 1 1989 Common Mode Rejection CMR 1 k Source Imbalance 50 60 Hz 160 dB Normal Mode Rejection 50 60 Hz 60 dB SC 2311 User Manual B 12 ni com Appendix B 5B Series Module Data Sheets Sensor Excitation Current 100 Q Pt 120 Q Ni 0 25 mA 10 Cu Lead Resistance Effe
14. Output Offset vs Temperature z20uV C Gain vs Temperature 0 00396 of Reading C Input Resistance Power On gt 1000 MQ Power Off 200kQ Overload 200 kQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 2 u V rms Output 100 kHz Bandwidth 100 uV rms 0 3 mV peak peak Output 1 MHz Bandwidth 1 5 mV peak peak Output 5 MHz Bandwidth 6 mV peak peak Bandwidth 3 dB 4 Hz Output Rise Time 10 to 90 Span 100 ms SC 2311 User Manual B 22 ni com Appendix B 5B Series Module Data Sheets Common Mode Voltage CMV Input to Output Continuous 1500 V rms maximum Input to Power Continuous 1500 V rms maximum Output to Power Continuous 250 V rms maximum Transient ANSI IEEE C37 90 1 1989 Common Mode Rejection CMR 1 kO Source Imbalance 50 60 Hz 170 dB Normal Mode Rejection NMR 116 dB 60 Hz 108 dB 50 Hz Sensor Excitation Current 100 0 500 Q 1 kO Sensors 0 25 mA 10 k Sensor 0 1 mA Lead Resistance Effect 100 Q 500 Q 1 kQ Sensors 80 005 Q Q 10 KQ Sensor 0 01 Q O Input Protection Continuous 240 V rms maximum Transient ANSI IEEE C37 90 1 1989 Output Resistance 25 Q Voltage Output Protection Continuous Short to Ground Output Current Limit 9 mA Output Selection Time C us to 1 mV of Vut Cj 4 0 to 2 000 pF Output Enable Control Max Logic 0 0 8 V Min Logic 1 24V Max Logic 1 100 V Input Current 0 1 0 5 uA Power Supply Volta
15. floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within 3 V of power common Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched as on the 5BO1 and 5B08 backplanes l l l oc CHOPPER I SIGNAL pu ISOLATION AC1361 ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION NC NO CONNECTION BARRIER Figure 1 5B47 Functional Block Diagram Input Types CJc EXC LO HI Thermocouple Types J K T ER SB Output Ranges AC1361 THERMOCOUPLE Figure 2 5B47 Input Field Connections e 0to45 V 1 V to 5 V custom SC 2311 User Manual B 48 ni com Appendix B 5B Series Module Data Sheets 5B47 Specifications Description Input Ranges Standard Ranges Custom Ranges Model 5B47 Refer to Model Table 5 mV to 500 mV Output Ranges RL gt 50 kQ Accuracy Initial 25 C 1 V to 5 V orO V to 5 V See Model Table Input Offset vs Temperature Output Offset vs Temperature Gain vs Temperature Cold Junction Compensation Initial Accuracy 425 C Accuracy 5 C to 45 C In
16. stack mount kit 2 10 to 2 11 standard 19 in rack 2 9 to 2 10 NI Developer Zone D 1 SC 2311 User Manual I 2 P parts locator diagram for SC 2311 shielded carrier 2 3 physical specifications SC 2311 shielded carrier A 1 power requirements for SC 2311 shielded carrier with 5B and SSR series modules C 1 to C 2 R rack mount kit 2 9 to 2 10 S safety information 2 5 to 2 6 safety specifications SC 2311 shielded carrier A 2 SC 2311 shielded carrier configuration 2 1 to 2 6 I O panelettes 2 7 to 2 9 parts locator diagram 2 3 safety information 2 5 to 2 6 setting switches 2 4 to 2 5 top cover removal figure 2 2 interfacing with signal conditioning modules analog signal conditioning modules 1 1 digital signal conditioning modules 1 1 I O panelettes 2 7 to 2 9 mounting 2 9 to 2 11 overview 1 2 parts locator diagram 2 3 power requirements with 5B and SSR series modules C 1 to C 2 requirements for getting started 1 3 to 1 4 specifications A 1 to A 2 unpacking 1 4 ni com specifications 5B30 5B31 voltage input modules B 4 to B 5 5B32 process current input modules B 8 to B 9 5B34 RTD input modules isolated 2 or 3 wire B 12 to B 14 5B35 RTD input modules isolated 4 wire B 17 to B 19 5B36 potentiometer input modules B 22 to B 24 5B37 thermocouple input module with cold junction compensation B 27 to B 28 5B38 strain gauge input module B 31 to B 33 5B42 process current inp
17. 1 4 V for positive level signals and the hysteresis to either 25 mV or 400 mV all input types The 5B45 and 5B46 protect the computer side from field side overvoltage faults All models withstand 240 V rms at their input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions In addition all 5B45 and 5B46 models are mix and match and hot swappable so can be inserted or removed from any socket in the same backplane without disrupting system power Inside 5B45 5B46 Modules The 5B45 46 internal circuitry compares the input signal to the user selected threshold VT and hysteresis VH Signals of virtually any wave shape that exceed the combined threshold and hysteresis levels VT VH will trigger a comparator at a rate determined by the input frequency The comparator output is then transmitted across a proprietary transformer coupled isolation barrier and converted to a high level analog signal This signal is then filtered by a multi pole low pass Butterworth filter and buffered to provide a low noise low impedance output signal that is accurately proportional to input frequency Simple Setup and Versatile Choices Setting the threshold and hysteresis values is a simple matter of externally wiring to the backplane screw terminals The threshold for measuring a zero crossing voltage waveform such as sine waves is set to O volts by connecting the input signal across screw terminals 4
18. B 5B Series Module Data Sheets 5B32 Isolated Current Input Functional Description The 5B32 is a single channel signal conditioning module that amplifies protects filters and isolates its analog input The module measures a process current input signal of 4 20 mA or 0 20 mA by reading the voltage across an external precision 20 Q resistor supplied and generating an output of 0 to 5 V Extra current conversion resistors are available as accessories See Model AC1362 in the Accessories section Note that the 5B32 module circuitry can withstand 240 V rms at the input screw terminals thereby shielding computer side circuitry from field side overvoltage conditions In addition all 5B32 Series modules are mix and match and hot swappable so can be inserted or removed from any socket in the same backplane without powering down the system Inside the 5B32 Series Module A chopper stabilized input amplifier provides low drift and stable gain At the amplifier input a stable laser trimmed zero scale input offset is subtracted from the input signal to set the zero scale value for the 4 20 mA range For user convenience the zero can be optionally factory set to meet custom needs This allows suppression of a zero scale input value many times larger than the total span for precise expanded scale measurements Internal multi pole lowpass filtering with a four Hz cutoff 3dB enhances normal mode noise on signal and common mode noise on
19. CROSSING POSITIVE WAVEFORMS 0 to 275 kHz INPUT custom NOTE HYSTERESIS IS x 400mV WHEN NOT CONNECTED Output Ranges Figure 2 5B45 and 5B46 Input Field Connections e OVto 5 V 5 V to 5 V custom National Instruments Corporation B 43 SC 2311 User Manual Appendix B SC 2311 User Manual 5B Series Module Data Sheets 5B45 and 5B46 Specifications Description Model 5B45 Model 5B46 Frequency Input Standard Ranges Refer to Model Table Refer to Model Table Custom Ranges 500 Hz span min 20 kHz span 20 kHz span min 275 max kHz span max Overrange 20 of Span Voltage Range 70 mV rms min 240 V rms max m Waveforms Pulse Width Pulse Train Inputs 2 us min Threshold Options Zero Crossing or TTL 1 4 V TTL Input Low 40 C to 85 C 0 8 V max TTL Input High 40 C to 85 C 2 0 V min Sine Square Triangle Pulse Train Hysteresis Options 25 mV or 400 mV Output Ranges RL gt 50 KQ 5 V to 5 Vor0 Vto 5 V Accuracy Initial 25 C 0 05 Span 0 1 Span max Nonlinearity 0 005 Span 0 015 Span max Output Offset vs Temperature 20 uV C Gain vs Temperature 20 ppm C Input Bias Current Vin 5 V 100 pA peak peak Input Impedance Small Signal Vin 5 V peak peak SMQ Large Signal Vin gt 5 V peak peak 40 KQ 330 pF Power Off 40 KQ 330 pF B 44
20. SSR IDGC 5 3 32 VDQGQ iii ARE N E E 4 3 O tput Mod les D 4 3 SSR OAC A 120 VAC 5 denda hide eee eon 4 4 SSR OAGz5A 240 VAO ie iet steel eel EEE EEE EEE NRE 4 5 SSR ODC 5 3 60 DVC iiie tiet tte reo Fave regere Ee nnne od 4 5 Appendix A Specifications Appendix B 5B Series Module Data Sheets Appendix C Power Requirements for the SC 2311 with 5B and SSR Series Modules Appendix D Technical Support Resources Glossary Index SC 2311 User Manual vi ni com Contents Figures Figure 2 1 SC 2311 Top Cover Remowval eene 2 2 Figure 2 2 SC 2311 Parts Locator Diagram eseeeeeeeneeme 2 3 Figure 2 3 NRSE and RSE or DIFF Mode Circuits eene 2 4 Figure 2 4 Installing an I O Panelette esee 2 8 Figure 2 5 Installing an I O Panelette Label eee 2 9 Figure 2 6 Rack Mount Option sseeseseeeeseeeeeeeen rennen en eere eene 2 10 Figure 2 7 Stack Mount Option iedede nist ei ieaiai SEERE 2 11 Figure 4 1 SSR IAC AC Input Diagram eese eene 4 2 Figure 4 2 SSR IDC DC Input Diagram eene eene 4 3 Figure 4 3 SSR OAC AC Output Diagram eere eee 4 4 Figure 4 4 SSR ODC DC Output Diagram eene 4 6 Tables Table C 1 5B Series Current Requirements eese C 1 Table C 2 SSR Series Current Requirement
21. and 3 The threshold for a positive level signal such as a TTL or pulse train waveform is set at 1 4 V by connecting the input signal across terminals 3 and 2 Hysteresis for both input signal types is set at 400 mV but can be changed to 25 mV by adding a jumper between screw terminals 1 and 4 Response time is a function of a modules rated input frequency range Convenience Features The input circuit is fully floating and isolated from the output and power commons In addition the output section acts as a third floating port towards eliminating possible problems from ground loops and power supply noise The output common must be held within 3 V of power common SC 2311 User Manual B 42 ni com Appendix B 5B Series Module Data Sheets A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched as it is on the 5BO1 and 5B08 backplanes I COMPARATOR GUTPUT amp fol c HYSTERESIS i SWITCH x i V eo oo IM nv 20 Your 25m HYSTERESI HYSTERESI ISOLATEDINPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B45 and 5B46 Functional Block Diagram Input Ranges HYSTERESIS HI RETURN HYSTERESIS 1 4V HI e 5B45 0to10 4 VTT kHz 0 to 20 kHz ieee custom HYSTERESIS e 5B46 0 to 250 NOTE ZERO TTL INPUT kHz
22. are warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this document is accurate The document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent ed
23. denotes a note which alerts you to important information This icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash Bold text denotes items that you must select or click on in the software such as menu items and dialog box options Bold text also denotes parameter names Italic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that you must supply Text in this font denotes text or characters that you should enter from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions and code excerpts Contents Chapter 1 Introduction About the SC 2311 5B Series Modules and SSR Series Modules 1 2 What You Need to Get Started essere rennen enne 1 3 Unpackimng s cce oe ete e tO ambe inum 1 4 Chapter 2 Configuring and Setting Up the SC 2311 Conti suring the 5C 2311 iis etiem wee the Hee ee ires 2 1 Setting SW Jeo oue p ede tenete ionem dee 2 4 Setting S WA nni nie RNC ERROR OH RE HERR HERE eee 2 4 Setting SW3 sccundum eene ania e D RP REPE 2 4 Setting SW2 aui geteidet ape ee pie pete Iiis etd aati 2 5 Safety Informatio
24. due to lead resistances A low drift chopper stabilized differential amplifier allows use of a very low excitation current to minimize error due to potentiometer self heating The amplifiers low input offset drift 240 004 Q C and gain drift of 30 ppm C assure accuracy over the full operating temperature range True Three Port Isolation The floating differential input circuit on the field side eliminates the need for any input grounding Signal and power isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal True three port isolation Input Output Power includes common mode ratings of 1500 V rms between input output and input power 250 V rms between power and output no return path is required between the power and signal output commons Filtering and Protection An optimized five pole Butterworth filter with a 4 Hz bandwidth provides 116 dB of normal mode rejection noise on signal at 60 Hz and 108 dB at 50 Hz Output noise is an exceptionally low 0 3 mV pk pk in a 100 kHz bandwidth and 6 mV pk pk in a 5 MHz bandwidth The 5B36 protects the computer side from damage due to field side overvoltage faults The module withstands 240 V rms at the input terminals without damage thereby shieldin
25. full scale frequency signals from 20 kHz to 275 kHz Each module scales the frequency input to a 0 5 V output signal that is routed from the SC 2311 to the DAQ device for measurement You can insert and use the 5B45 46 frequency input modules in any of the eight 5B channels inside the SC 2311 SC 2311 User Manual 3 4 ni com Chapter 3 5B Series Modules 5B47 Linearized Thermocouple Input Module with Cold Junction Compensation The 5B47 linearized thermocouple input module is capable of accepting input signals from J K T E R S and B type thermocouples The 5B47 also uses cold junction compensation circuitry which is part of the SC 2311 accessory to compensate for the parasitic thermocouples formed at the input screw terminals of the SC 2311 The 5B47 linearly scales the thermocouples temperature into a 0 5 V signal that is routed form the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B47 linearized thermocouple input modules in any of the eight 5B channels inside the SC 2311 National Instruments Corporation 3 5 SC 2311 User Manual SSR Series Modules Overview This chapter describes the SSR Series modules you can use with the SC 2311 SSR Series modules optically isolate field signals from the E Series DAQ device preventing computer damage caused by overvoltage transients in your field wiring R Note All SSR Series modules use negative logic Input Modules The
26. have standard prewired I O connectors You can install I O panelettes on the front of the SC 2311 enclosure You can install up to 18 single width I O panelettes in the SC 2311 enclosure You can mix all types of I O panelettes to produce custom I O combinations AA Note The strain relief and 9 pin D subminiature I O panelettes require two panelette spaces The dual 9 pin D sub I O panelette requires three panelette spaces Each thermocouple and BNC I O panelette accommodates two connectors Use the strain relief I O panelettes to connect large numbers of wires directly to your internal accessory You can machine the blank T O panelettes to make custom I O panelettes to suit your application Use the preconfigured I O panelettes to quickly connect and disconnect standard connectors iyi Note For RF emission compliance you cannot use BNC panelettes Refer to Figure 2 4 and use the following steps to install any of the I O panelettes 1 Choose one of the I O panelettes to install 2 Placethe lower edge of the I O panelette in the groove at the bottom of the enclosure opening Tilt the I O panelette top back into the enclosure 4 Secure the I O panelette with either one two or three of the M2 5 x 6 panhead screws depending on the type of I O panelette that are included with the panelette 5 Repeat steps 1 through 4 until you have installed all your non blank I O panelettes 6 Install a blank I O panelette in any unus
27. in Figure 2 3 Use this setting if you are not using 5B modules to take measurements Setting SW4 to the SPLY GND AIGND SHORT position allows the 5B Series modules to function properly when using the external power supply This switch setting short circuits the external supply ground to the AIGND of the E Series DAQ device In most cases SW4 should remain in the SPLY GND AIGND SHORT position Setting SW3 to the EXT 5V 5B position powers the 5B modules using the external power supply In this mode it is necessary to connect the external power supply to power the 5B Series modules For the best performance set SW3 to the EXT 5V SB position and use the external power supply 2 4 ni com Chapter 2 Configuring and Setting Up the SC 2311 Setting SW3 to the Board 5V 5B position powers the 5B modules using the E Series DAQ device 5 V supply In this mode you can power the 5B Series modules directly from the E Series DAQ device hy Note The maximum current that the DAQ device can deliver depends on which DAQ device you have selected When using the Board 5V 5B setting it is necessary to know the current requirements of the 5B Series modules and the current available from the DAQ device you are using See Appendix C Power Requirements for the SC 2311 with 5B and SSR Series Modules for more details Setting SW2 Setting SW2 to the EXT 5V SSR position powers the SSR modules using the external power supply In this mode you
28. noise on signal and common mode noise on signal return rejection at 50 60 Hz enabling accurate measurement of small signals in high electrical noise Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within 3 V of power common SC 2311 User Manual B 10 ni com Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the switch is to be on at all times the enable input should be grounded to power common as it is on the 5BO1 and 5B08 backplanes 3 amp 4 WIRE WIRE 4WRE 5B BACKPLANE ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC s NO CONNECTION Figure 1 5B34 Functional Block Diagram Input Types NC Lo HI RETURN 100 Q Platinum RTD 10 Q Copper RTD 120 Q Nickel RTD evn WIRE 3 amp amp WIRE OutputRange 77 e 0to45 V NOTE 4 WIRE RTD SENSORS MAY BE USED WTH THE 5B34 AS SHOWN FOR HIGHEST ACCURACY MODEL 5B35 SHOULD BE USED WITH 4 WIRE RTD
29. or National Instruments corporate Phone numbers for our worldwide offices are listed at the front of this manual SC 2311 User Manual D 2 ni com Glossary Prefix Meanings Value p pico 10 2 n nano 10 9 u micro 10 6 m milli 10 3 k kilo 103 M mega 106 G giga 10 t tera 102 Numbers Symbols percent positive of or plus negative of or minus per E degree Q ohm A amperes A D analog to digital AC alternating current AC coupled allowing the transmission of AC signals while blocking DC signals National Instruments Corporation G 1 SC 2311 User Manual Glossary ACH ADC ADC resolution AIGND AISENSE alias amplification AOGND asynchronous attenuate attenuation ratio AWG b B bandwidth bipolar SC 2311 User Manual analog input channel signal analog to digital converter an electronic device that converts an analog voltage to a digital number the resolution of the ADC measured in bits A 16 bit ADC has a higher resolution and thus a higher degree of accuracy than a 12 bit ADC analog input ground signal analog input sense signal a false lower frequency component that appears in sampled data acquired at too low a sampling rate a type of signal conditioning that improves accuracy in the resulting digitized signal and reduces noise analog output ground signal 1 hardware a property of an event th
30. stack mounting brackets as handles National Instruments Corporation 2 11 SC 2311 User Manual 5B Series Modules Overview This chapter describes the 5B Series modules you can use with the SC 2311 You can use 5B Series modules with the SC 2311 to perform per channel analog signal conditioning with National Instruments E Series DAQ devices The 5B Series modules are inserted in an eight channel backplane within the SC 2311 The 5B Series modules provide isolation noise rejection and amplification for millivolt sources volt sources 4 20 mA sources 0 20 mA sources RTDs thermocouples strain gauges potentiometers and frequency inputs Install panelettes in the front of the SC 2311 to connect to your I O signals Connect the panelettes to the input terminal blocks of corresponding 5B channels After the signals are conditioned they are routed through a shielded 68 position cable to an E Series DAQ device for measurement The 5B Series modules include the following e 5B30 5B31 5B40 5B41 voltage input modules e 5B32 process current input modules e 5B34 RTD input isolated 2 or 3 wire RTD modules e 5B35 RTD input isolated 4 wire RTD modules e 5B36 potentiometer input modules e 5B37 thermocouple input modules with cold junction compensation e 5B38 strain gauge input modules e 5B42 process current input modules with regulated 20 VDC loop e 5B45 46 frequency input modules e 5B47 linearized thermocouple i
31. the inverting and noninverting inputs the input range over which a circuit can handle a common mode signal the mathematical average voltage relative to the ground of the computer of the signals from a differential input any voltage present at both instrumentation amplifier inputs with respect to amplifier ground a method of triggering in which you simulate an analog trigger using software Also called software triggering the time required in an analog input or output system from the moment a channel is interrogated such as with a read instruction to the moment that accurate data is available a circuit that counts external pulses or clock pulses timing an unwanted signal on one channel due to an input on a different channel the amount of current a digital or analog output channel is capable of sourcing or sinking while still operating within voltage range specifications the ability to dissipate current for analog or digital output signals the ability to supply current for analog or digital output signals digital to analog digital to analog converter an electronic device that converts a digital number into a corresponding analog voltage or current G 4 ni com DAQ dB DC DC coupled default setting device DIFF differential input differential measurement system digital port digital trigger DIN DIO dithering down counter National Instruments Corporation G 5 Glossary data acquisi
32. uV 96 of V 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Rated Performance Operating Storage Relative Humidity RFI Susceptibility 40 C to 85 C 40 C to 85 C 40 C to 85 C 0 to 95 60 C noncondensing 0 5 Span error 400 MHz 5 Watt 3 ft Includes the combined effects of repeatability hysteresis and nonlinearity error Loads heavier than 50 KQ will degrade nonlinearity and gain temperature coefficient 2A precision 25 current sense input resistor is internal to the 5B42 refer to block diagram 3The user s board layout must separate Power Common from Output Common When the output switch is not used connect the Enable Input to the Output Common Output common is connected to power common when the 5B42 is installed on a 5B Series backplane Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 41 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B45 5B46 Isolated Frequency Input Functional Description The 5B45 and 5B46 are single channel isolated frequency input modules that produce a 0 to 5 V output proportional to input frequency Model 5B45 accepts full scale inputs ranging from 500 Hz to 20 kHz Model 5B46 accepts full scale inputs ranging from 20 kHz to 275 kHz Both models allow the user to set the threshold to either 0 V for zero crossing signals or
33. 3 mV peak peak Output 1 MHz Bandwidth 1 5 mV peak peak Output 5 MHz Bandwidth 6 mV peak peak Bandwidth 3 dB 4 Hz Output Rise Time 10 to 90 Span 100 ms Common Mode Voltage CMV Input to Output Continuous 1500 V rms maximum Input to Power Continuous 1500 V rms maximum Output to Power Continuous 250 V rms maximum Transient ANSI IEEE C37 90 1 1989 National Instruments Corporation B 17 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Common Mode Rejection CMR 1k Source Imbalance 50 60 Hz 190 dB 180 dB Model 5B35 04 Normal Mode Rejection NMR 116 dB 60 Hz 108 dB 50 Hz Sensor Excitation Current 100 Q Pt 120 Q Ni 0 25 mA 10 Q Cu 1 0 mA Lead Resistance Effect 100 Q Pt 120 Q Ni 20 00001 C Q 10 Cu 20 0001 C Input Protection Continuous 240 V rms maximum Transient ANSI IEEE C37 90 1 1989 Output Resistance 25 Voltage Output Protection Continuous Short to Ground Output Current Limit 9 mA Output Selection Time 6 us to 1 mV of Vout Cj 4 0 to 2 000 pF Output Enable Control Max Logic 0 0 8 V Min Logic 1 324 V Max Logic 1 100 V Input Current 0 1 0 5 pA Power Supply Voltage 5 V dc 5 Power Supply Current 15 mA Power Supply Sensitivity RTI 0 2 C of V Mechanical Dimensions 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm SC 2311 User Manual B 18 ni com Appendix B
34. 42 is mix and match and hot swappable with all other 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the switch is to be on at all times the enable input should be grounded to output common as it is on the 5B01 and 5B08 backplanes TRANSMITTERE Exi sichAL ISOLATION z o 5 COMMON ul g READ ENABLE ISOLATED OUTPUT SIDE 5 VDC POWER COMMON ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B42 Functional Block Diagram Input Types TN EXC he 1 1 aD 2 WIRE TRANSMITTER e to 5 V or 2 to 10 V Figure 2 5B42 Input Field Connections 0 to 10 V custom Two Wire Transmitters 4 to 20 mA 0 to 20 mA custom Output Range National Instruments Corporation B 39 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B42 Specifications typical 25 C and V 5 V dc Description Model 5B42 Input Ranges Standard Ranges 4 mA to 20 mA Refer to Model Table Custom Ranges 0 mA to 20 mA Refer to Ordering Section Isolated Loop Supply Voltage 20 V 4 mA to 20 mA Input Output Ranges RL gt 50 kQ 1 V to 5 V 2 V to 10 V Accuracy Initial 25 C 0 05 Span 4 uA RTI Nonlinear
35. 5B Series Module Data Sheets Environmental Temperature Range Rated Performance 40 C to 85 C Operating 40 C to 85 C Storage 40 C to 85 C Relative Humidity 0 to 9396 40 C noncondensing RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft Includes the combined effects of repeatability hysteresis and conformity error Loads heavier than 50 k will degrade conformity and gain temperature coefficient The user s board layout must separate Power Common from Output Common When the output switch is not used connect the Enable Input to the Output Common Output Common is connected to power common when the 5B35 is installed on a 5B Series backplane Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 19 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B36 Isolated Potentiometer Input Functional Description The 5B36 is a single channel signal conditioning module that amplifies filters and buffers a wide variety of three wire potentiometers and two wire rheostats slidewires The module provides an accurately scaled Te on low noise low impedance output of 0 to 5 V sa POTENTEI PT Accurate and Stable Performance The 5B36 supplies protected potentiometer slidewire excitation from a pair of closely matched precision current sources designed to cancel errors
36. 989 Common Mode Rejection CMR 1 k Source Imbalance 50 60 Hz 100 dB Normal Mode Rejection 3 dB 10 kHz SC 2311 User Manual B 36 90 dB ni com Input Protection Appendix B Continuous 240 V rms maximum Transient ANSIIEEE C37 90 1 1989 Output Resistance 50 Q Voltage Output Protection Continuous Short to Ground Output Selection Time 6 us Ciioad 0 to 2 000 pF Output Enable Control Max Logic 0 Min Logic 1 Max Logic 1 1V 42 5 V r1 MN Input Current 0 Power Supply Voltage Power Supply Current 04 mA 5 V 5 30 mA Power Supply Sensitivity RTI Mechanical Dimensions 2 uV Vs 50 4 mV Vs 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range Rated Performance Operating Storage 25 C to 85 C a 40 C to 85 C 40 C to 85 C m Relative Humidity RFI Susceptibility lo to 93 40 C noncondensing 0 5 Span error 9 400 MHz 5 Watt 3 ft Specifications same as model 5B40 Vz is the nominal input voltage that results in a 0 V output Includes the combined effects of repeatability hysteresis and nonlinearity and assumes RL gt 50 kQ Loads heavier than 50 k will degrade nonlinearity and gain temperature coefficient 3 The output common must be kept within 3 V of power common Specifications subject to change without notice
37. B 4 ni com Input Protection Continuous Transient Output Resistance Appendix B 240 V rms maximum ANSI IEEE C37 90 1 1989 m Bo JT Voltage Output Protection Output Selection Time Continuous Short to Ground 6 us Coad 0 to 2 000 pF s Output Enable Control Max Logic 0 Min Logic 1 Max Logic 1 Input Current 0 bay o o 36 V ame Power Supply Voltage Power Supply Current Power Supply Sensitivity RTI Mechanical Dimensions 45 V 5 30 mA 7 2 uV Vs 0 4 mV Vs 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range Rated Performance Operating Storage Relative Humidity RFI Susceptibility 25 C to 85 C 40 C to 85 C 40 C to 85 C 0 to 93 40 C noncondensing 0 5 Span error 400 MHz 5 Watt 3 ft Specifications same as model 5B30 Vz is the nominal input voltage that results in a 0 V output ncludes the combined effects of repeatability hysteresis and nonlinearity and assumes RL gt 50 KQ 3 The output common must be kept within 3 V of power common Loads heavier than 50 kQ will degrade nonlinearity and gain temperature coefficient Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 5 SC 2311 User Manual 5B Series Module Data Sheets Appendix
38. C 2311 User Manual The SSR IAC 5A input module senses 180 280 VAC DC from a field source and converts it into a TTL logic signal When a signal in this voltage range is detected at its input the SSR generates a logic low signal on the corresponding DIO line of the E Series DAQ device Otherwise the SSR returns a logic high signal Figure 4 1 shows the SSR IAC circuit diagram You can insert and use the SSR IAC 5A in any of the eight SSR sockets inside the SC 2311 4 2 ni com Chapter 4 SSR Series Modules SSR IDC 5 3 32 VDC The SSR IDC 5 input module senses 3 32 VDC from a field source and converts it into a TTL logic signal When a signal in this voltage range is detected at its input the SSR generates a logic low signal on the corresponding DIO line of the E Series DAQ device Otherwise the SSR returns a logic high signal Figure 4 2 shows the SSR IDC circuit diagram Rx OO VDC Q K E rd Voo Input O H Vottage wy Hysterisis Circuit vv Current Output Regulating Figure 4 2 SSR IDC DC Input Diagram You can insert and use the SSR IDC 5 in any of the eight SSR sockets inside the SC 2311 Output Modules SSR Series output modules use DIO lines on an E Series DAQ device to control external devices If a DIO line sends a logic low signal the output module turns on and current flows If the DIO line sends a logic high signal the output module turn
39. FUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES TRANSIENT FAILURES OF ELECTRONIC SYSTEMS HARDWARE AND OR SOFTWARE UNANTICIPATED USES OR MISUSES OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED SYSTEM FAILURES ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS INCLUDING THE RISK OF BODILY INJURY AND DEATH SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE TO AVOID DAMAGE INJURY OR DEATH THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES INCLUDING BUT NOT LIMITED TO BACK UP OR SHUT DOWN MECHANISMS BECAUSE EACH END USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION INCLUDING WITHOUT LIMITATION THE APPROPRIATE DESIGN PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION Conventions H AN bold italic monospace The following conventions appear in this manual This icon
40. RTD measurements please refer to the 5B35 section The 5B34 protects the computer side from damage due to field side overvoltage faults The module withstands 240 V rms at the input terminals without damage thereby shielding the internal computer side circuitry from field side overvoltage conditions In addition the 5B34 is mix and match and hot swappable with all other 5B Series input modules so can be inserted or removed from any socket in the same backplane without disrupting system power Inside the 5B32 Series Module Two identical sources provide excitation current for the RTD For three wire RTDs the second current flows through the third RTD lead so as to cancel the effects of equal lead resistance this current also flows through a stable resistor laser trimmed to the RTD value that sets the differential amplifier input and module output to zero volts at that scale point The current sources and the amplifier input are protected to withstand input overvoltage up to 240 V rms A differential chopper stabilized input amplifier provides stable gain and exceptionally low drift This allows the use of very low RTD excitation current to minimize self heating and preserve measurement accuracy Along with module gain and zero settings a feedback linearizer is laser trimmed Custom versions of 5B34 can be laser trimmed to meet special requirements Internal multi pole lowpass filtering with a four Hz cutoff 3dB enhances normal mode
41. SSR Series modules include the following e Input modules SSR IAC 5 120 VAC SSR IAC 5A 240 VAC SSR IDC 5 3 to 32 VDC e Output modules SSR OAC 5 120 VAC SSR OAC 5A 240 VAC SSR ODC 5 3 to 60 VDC See Appendix C Power Requirements for the SC 2311 with 5B and SSR Series Modules to find the power requirements for your SSR Series modules Input SSR Series modules sense voltages from a field source and return a logic value to the E Series DAQ device If a voltage within the selected input range for the input module is present it returns a logic low signal to the DAQ device otherwise it returns a logic high signal National Instruments Corporation 4 1 SC 2311 User Manual Chapter 4 SSR Series Modules SSR IAC 5 120 VAC The SSR IAC 5 input module senses 90 140 VAC DC from a field source and converts it into a TTL logic signal When a signal in this voltage range is detected at its input the SSR generates a logic low signal on the corresponding DIO line of the E Series DAQ device Otherwise the SSR returns a logic high signal Figure 4 1 shows the SSR IAC circuit diagram Rx Q6 VAC O Ol K 6 Vcc Input esas BP Voltage n Hysterisis Circuit y Y Current Output Regulating Figure 4 1 SSR IAC AC Input Diagram You can insert and use the SSR IAC 5 in any of the eight SSR sockets inside the SC 2311 SSR IAC 5A 240 VAC S
42. Signal Conditioning SC 2311 User Manual Connectivity for 5B and SSR Modules w NATIONAL February 2001 Edition INSTRUMENTS Part Number 322906A 01 Worldwide Technical Support and Product Information ni com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 794 0100 Worldwide Offices Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Brazil 011 284 5011 Canada Calgary 403 274 9391 Canada Ottawa 613 233 5949 Canada Qu bec 514 694 8521 Canada Toronto 905 785 0085 China Shanghai 021 6555 7838 China ShenZhen 0755 3904939 Denmark 45 76 26 00 Finland 09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 280 7625 Netherlands 0348 433466 New Zealand 09 914 0488 Norway 32 27 73 00 Poland 0 22 528 94 06 Portugal 351 1 726 9011 Singapore 2265886 Spain 91 640 0085 Sweden 08 587 895 00 Switzerland 056 200 51 51 Taiwan 02 2528 7227 United Kingdom 01635 523545 For further support information see the Technical Support Resources appendix To comment on the documentation send e mail to techpubseni com Copyright 2001 National Instruments Corporation All rights reserved Important Information Warranty The SC 2311 shielded carrier SSR Series modules and 5B Series modules
43. age range 3 32 VDC 90 140 VAC 180 280 VAC Voltage level ON state min 3 VDC 90 VAC 180 VAC OFF state min 1 VDC 25 VAC 50 VAC Supply current 10 mA 10 mA 10 mA Input impedance 1 8 KQ 22 KQ 60 KQ Delay time Turn on max 0 20 mS 20 mS 20 mS Turn off max 0 40 mS 20 mS 20 mS National Instruments Corporation A 3 SC 2311 User Manual Appendix A 5B Series SC 2311 User Manual Specifications for SSR Series SSR Series output module characteristics Characteristic SSR ODC 5 SSR OAC 5 SSR OAC 5A Voltage range 3 60 VDC 24 140 VAC 24 280 VAC Voltage drop 0 9Vat325A L2Vat20A 12Vat2 0A Current rating 3 25 Aat25 C 20 Aat25 C 2 0A at 25 C one module 2 8 A at 40 C 1 6Aat40 C 1 6A at 40 C populated 2 25 Aat 55 C 1 1 Aat55 C 1 1 Aat55 C Current rating 2 75 Aat25 C 1 7 Aat25 C 1 7 A at 25 C four modules 2 35 Aat40 C 1 3 Aat40 C 1 3 A at 40 C populated 2 0Aat55 C 0 9Aat55 C 0 9 Aat55 C Current rating 2 1 A at 25 C 1 2Aat25 C 1 2 Aat 25 C eight modules 1 75 Aat40 C 0 8 Aat40 C 0 8 A at 40 C populated 0 8 Aat55 C 0 6 Aat55 C 0 6 Aat55 C Supply current 10 mA 10 mA 10 mA Leakage 1 5 mA 2 0 mA 4 0mA current max Delay time Turn on max 0 20 uS 8 33 mS 8 33 mS Turn off max 0 40 uS 8 33 mS 8 33 mS For 5B Series modules specifications see Appendix B 5B Series Module Data Sheets Maximum working voltage
44. at occurs at an arbitrary time without synchronization to a reference clock 2 software a property of a function that begins an operation and returns prior to the completion or termination of the operation to decrease the amplitude of a signal the factor by which signal amplitude is decreased American Wire Gauge bit one binary digit either 0 or 1 byte eight related bits of data an eight bit binary number Also used to denote the amount of memory required to store one byte of data the range of frequencies present in a signal or the range of frequencies to which a measuring device can respond a signal range that includes both positive and negative values for example 5 V to 5 V G 2 ni com BNC break before make breakdown voltage carrier CH channel channel clock Channel Wizard circuit trigger clock CMRR code width cold junction compensation National Instruments Corporation G 3 Glossary a type of coaxial signal connector a type of switching contact that is completely disengaged from one terminal before it connects with another terminal the voltage high enough to cause breakdown of optical isolation semiconductors or dielectric materials See also working voltage Celsius a main circuit board that provides multiple locations to add sub circuits or modules and a means to connect them channel pin or wire lead to which you apply or from which you read the analog o
45. ble and reliable performance A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal True three port isolation Input Output Power includes common mode ratings of 1500 V rms between input and output and input and power 250 V rms between power and output no return path is required between the power and signal output commons Filtering and Protection An optimized five pole Butterworth filter with a 4 Hz bandwidth provides 116 dB of normal mode rejection noise on signal at 60 Hz and 108 dB at 50 Hz Output noise is an exceptionally low 0 3 mV p p in a 100 kHz bandwidth and 6 mV p p in a 5 MHz bandwidth The 5B35 protects the computer side from damage due to field side overvoltage faults The module withstands 240 V rms at the input terminals without damage thereby shielding the internal computer side circuitry from field side overvoltage conditions In addition the 5B35 is mix and match and hot swappable with all other 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power National Instruments Corporation B 15 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the swit
46. called a grounded measurement system resistance temperature detector a metallic probe that measures temperature based upon its coefficient of resistivity G 12 ni com RTI RTSI bus S H S s sample counter scan scan clock scan rate SCANCLK SE self calibrating National Instruments Corporation G 13 Glossary referred to input real time system integration bus the National Instruments timing bus that connects DAQ devices directly by means of connectors on top of the devices for precise synchronization of functions seconds samples sample and hold a circuit that acquires and stores an analog voltage on a capacitor for a short period of time samples per second used to express the rate at which a DAQ device samples an analog signal the clock that counts the output of the channel clock in other words the number of samples taken On devices with simultaneous sampling this counter counts the output of the scan clock and hence the number of scans one or more analog or digital input samples Typically the number of input samples in a scan is equal to the number of channels in the input group For example one pulse from the scan clock produces one scan which acquires one new sample from every analog input channel in the group the clock controlling the time interval between scans On devices with interval scanning support for example the PCI 6052E this clock gates the channel clock on and
47. ce between the voltages at its two inputs SC 2311 User Manual Glossary interval scanning lou lor isolation isolation voltage isothermal kbytes s kS L LabVIEW latched digital I O SC 2311 User Manual scanning method where there is a longer interval between scans than there is between individual channels comprising a scan current output high current output low a type of signal conditioning in which you isolate the transducer signals from the computer for safety purposes This protects you and your computer from large voltage spikes and makes sure the measurements from the DAQ device are not affected by differences in ground potentials the voltage that an isolated circuit can normally withstand usually specified from input to input and or from any input to the amplifier output or to the computer bus constructed to maintain constant temperature across area Isothermal construction of terminal blocks increases thermocouple measurement accuracy kilo the standard metric prefix for 1 000 or 103 used with units of measure such as volts hertz and meters 1 kelvin 2 kilo the prefix for 1 024 or 2 9 used with B in quantifying data or computer memory a unit for data transfer that means 1 000 or 10 bytes s 1 000 samples a graphical programming language a type of digital acquisition generation where a device or module accepts or transfers data after a digital pulse has been received Als
48. ch is to be on at all times the enable input should be connected to output common Mo Ex CHOPPER sichaL Ret we pP PROT ACTIVE O Vout na 6 FILT LPF 20 RTD LO 2m vo aa COMMON BACKPLANE Paor E ENABLE 9i za POWER ISOLATION 5VDC 1 x POWER ALTER POWER ve l ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B35 Functional Block Diagram Input Types Exc Lo HI EXC A A A A e 100 Q Platinum RTD 10 Q Copper RTD 1O 29 sO O 120 Q Nickel RTD Output Range wine e 0to45 V Figure 2 5B35 Input Field Connections SC 2311 User Manual B 16 ni com Appendix B 5B Series Module Data Sheets 5B35 Specifications typical 25 C and V 5 V dc Description Model 5B35 Input Ranges Standard Ranges Refer to Model Table Custom Ranges 200 C to 850 C 100 Platinum amp 0 00385 80 C to 320 C 120 Q Nickel t 0 00672 100 C to 260 C 10 Copper amp 0 004274 Output Range RL gt 50 KQ 0Vto 5V Accuracy Initial 25 C Refer to Model Table Conformity Error 0 05 Span Input Offset vs Temperature 20 01 C C Output Offset vs Temperature 20 uV C Gain vs Temperature 0 003 of Reading C Input Resistance Power On gt 1000 MQ Power Off 200 kQ Overload 200 kQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 2 u V rms Output 100 kHz Bandwidth 100 uV rms 0
49. ct 100 Q Pt 120 Q Ni 10 Q Cu Input Protection L0 mA 0 02 C Q 0 2 C Q Continuous Transient Output Resistance Voltage Output Protection 240 V rms maximum ANSI IEEE C37 90 1 1989 50 Q Continuous Short to Ground Output Selection Time 6 us QC 0t02000pF 0 Output Enable Control Max Logic 0 hav Min Logic 1 lA 0 Max Logic 1 436 V Input Current 0 4mA 0000 Power Supply Voltage 5 V 5 Power Supply Current 30 mA Power Supply Sensitivity RTI 100 Q Pt 120 Q Ni 0 05 C V 10 Cu 0 5 C V Mechanical Dimensions National Instruments Corporation 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm B 13 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Environmental Temperature Range Rated Performance 25 C to 85 C Operating 40 C to 85 C Storage 40 C to 85 C Relative Humidity 0 to 93 40 C noncondensing RFI Susceptibility 0 566 Span error 400 MHz 5 Watt 3 ft 0 025 For Cu RTD s 0 1 For Ni RTD s Rz is the value of the RTD resistance at the lowest point of the measurement range Includes the combined effects of repeatability hysteresis and conformity error Loads heavier than 50 k will degrade conformity and gain temperature coefficient 3For Pt RTD s only other types may vary The output common must be kept within 3 V of power common Specifications subject to change
50. dard Ranges Custom Ranges Model 5B32 0 mA to 20 mA or 4 mA to 20 mA 0 mA to 20 mA refer to ordering section Output Ranges RL 50 kQ 5 V to 5 Vor0 V t045 V Accuracy Initial 25 C Nonlinearity Input Offset vs Temperature Output Offset vs Temperature 40 059 Span 0 05 Iz 0 02 Span 0 0025 of Iz C 20 uV C Gain vs Temperature Input Resistor 40 002596 of Reading C Value 20 0 Q Accuracy 20 196 Stability vs Temperature Noise Input 0 1 Hz to 10 Hz Bandwidth 0 001 C 10 nA rms Output 100 kHz Bandwidth Bandwidth 3 dB Output Rise Time 10 to 90 Span 200 uV rms 4 Hz 200 ms Common Mode Voltage CMV Input to Output Continuous Output to Power Continuous Transient Common Mode Rejection CMR 1500 V rms maximum 3 V maximum ANSI IEEE C37 90 1 1989 1 k Source Imbalance 50 60 Hz Normal Mode Rejection 50 60 Hz SC 2311 User Manual 160 dB 60 dB B 8 ni com Input Protection Appendix B 5B Series Module Data Sheets Continuous Transient 240 V rms maximum ANSI IEEE C37 90 1 1989 Output Resistance Voltage Output Protection 50 Q Continuous Short to Ground Output Selection Time 6 us Ci 0 to 2 000 pF Output Enable Control Max Logic 0 Min Logic 1 Max Logic 1 Input Current 0 Power Supply Voltage Power Supply Current 1V 42 5 V 36 V 0 4mA 5 V 5 30 mA
51. e temperature coefficient a temperature sensor created by joining two dissimilar metals The junction produces a small voltage as a function of the temperature See sensor a type of signal conditioning that uses external voltages and currents to excite the circuitry of a signal conditioning system into measuring physical phenomena trigger signal any event that causes or starts some form of data capture transistor transistor logic a signal range that is always positive for example 0 to 10 V the output equivalent of a scan One or more analog or digital output samples Typically the number of output samples in an update is equal to the number of channels in the output group For example one pulse from the update clock produces one update which sends one new sample to every analog output channel in the group update signal the number of output updates per second SC 2311 User Manual Glossary V V Vcom Vpc VI Von Vor V ref Vss W waveform working voltage SC 2311 User Manual volts voltage input signal reference volts direct current virtual instrument 1 a combination of hardware and or software elements typically used with a PC that has the functionality of a classic stand alone instrument 2 a LabVIEW software module VI which consists of a front panel user interface and a block diagram program volts input high volts input low volts in voltage input signal volts output hig
52. e Voltage CMV Input to Output Continuous 1500 V rms maximum i Output to Power Continuous 3 V maximum E Transient ANSI IEEE C37 90 1 1989 Common Mode Rejection CMR 1kQ Source Imbalance 50 60 Hz 100 dB Normal Mode Rejection 50 60 Hz 3 dB 10 kHz Input Protection Signal and Excitation Voltage Continuous 240 V rms maximum Transient ANSI IEEE C37 90 1 1989 Output Resistance 50 Q T Voltage Output Protection Continuous Short to Ground Output Selection Time 6 us Ciioad 0 to 2 000 pF t SC 2311 User Manual B 32 ni com Appendix B 5B Series Module Data Sheets Output Enable Control Max Logic 0 Ee Min Logic 1 42 5 V Max Logic 1 r1 Input Current 0 Power Supply Voltage Power Supply Current 0 4 mA 7 5 V 5 200 mA Full Load 120 mA No Load Power Supply Sensitivity Mechanical Dimensions 25 ppm reading 2 5uV RTI 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range Rated Performance 25 C to 85 C Operating 4YCto489C Storage 40 C to 85 C i Relative Humidity 0 to 93 9 40 C noncondensing RFI Susceptibility Same as full bridge version 0 5 Span error 9 400 MHz 5 Watt 3 ft Includes the combined effects of repeatability hysteresis and nonlinearity Loads heavier than 50 kQ will degrade nonlinearity and gain tempera
53. e transducers between 300 dg We oben Q and 10 kQ The module provides an isolated PT ve bridge excitation of 10 V and a protected d Law T oo isolated precision output of 5 V to 5 V The 10 WEGE Vae P kHz bandwidth of the module ideally suits to XXII EE mian measure signals that vary rapidly with time such Qe CEL Ad as strain on an automobile chassis during a crash DEVICES weenuna test The 5B38 protects the computer side from damage due to field side overvoltage faults The module withstands 240 V rms at its input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions In addition the 5B38 is mix and match and hot swappable with all 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power The 5B38 04 contains bridge completion circuitry so can function with half bridge strain gages For quarter bridge requirements the user must complete the bridge input to the half bridge level externally The factory can configure the module for a wide range of input ranges sensitivities Inside the 5B38 Module A single pole anti aliasing filter resides at each modules input A three pole low pass filter in the output stage sets the bandwidth and yields optimal noise performance for accurate measurement of small signals in high electrical noise A chopper stabilized input amplifier provides low drift and stable
54. ecture that has found widespread acceptance as a standard in notebook size computers It originated as a specification for add on memory cards written by the Personal Computer Memory Card International Association a measure of signal amplitude the difference between the highest and lowest excursions of the signal programmable function input programmable gain instrumentation amplifier 1 a high performance processor structure in which the completion of an instruction is broken into its elements so that several elements can be processed simultaneously from different instructions 2 also refers to pipelined ADC that requires several conversions to produce output from the ADC devices that do not require DIP switches or jumpers to configure resources on the devices also called switchless devices 1 a communications connection on a computer or a remote controller 2 a digital port consisting of four or eight lines of digital input and or output the technique used on a DAQ device to acquire a programmed number of samples after trigger conditions are met an electrical device the resistance of which can be manually adjusted used for manual adjustment of electrical circuits and as a transducer for linear or rotary position SC 2311 User Manual Glossary ppm pretriggering propagation delay pulsed output Q quantization error R referenced signal sources relative accuracy resolution rise time RSE RTD
55. ed panelette opening National Instruments Corporation 2 7 SC 2311 User Manual Chapter 2 Configuring and Setting Up the SC 2311 1 Thermocouple I O Panelette 4 Strain Relief I O Panelette 6 Dual D Sub I O Panelette 2 M2 5x6 Screw 5 D Sub I O Panelette 7 Blank I O Panelette 3 BNC I O Panelette Figure 2 4 Installing an I O Panelette 1 0 Panelette Labels Each SC 2311 ships with a sheet of labels for you to apply to your I O panelettes as shown in Figure 2 5 The label sheet has both preprinted and blank labels You can customize the blank labels to suit your application You can use two labels on single width I O panelettes and three or more labels on wider panelettes UN Caution Do not use a panelette for signals that exceed the panelette rating SC 2311 User Manual 2 8 ni com Chapter 2 Configuring and Setting Up the SC 2311 1 I O Panelette 2 Label Figure 2 5 Installing an I O Panelette Label Mounting the SC 2311 To install your SC 2311 enclosure in a standard 19 in rack install the optional rack mount kit To use your SC 2311 enclosure in a desktop stacking configuration install the optional stack mount kit Refer to Figure 2 6 and use the following steps to install the rack mount kit on your SC 2311 enclosure 1 Attach a rack mount bracket to one side of the enclosure with four 4 40 x 1 4 in screws from the rack mou
56. el Table Custom Ranges 5 mV to 500 mV Output Range RL gt 50 k Q 5 V to 5 V or 0 to 5 V Accuracy Initial 25 C Nonlinearity Input Offset vs Temperature Output Offset vs Temperature Gain vs Temperature Cold Junction Compensation 0 05 Span 10 uV RTI 0 05 of Vz CJC Sensor Error 0 02 Span 1 uV C 20 uV C 0 0025 of Reading C Initial Accuracy 25 C3 0 25 C 0 75 C maximum Common Mode Voltage CMVv Input to Output Continuous Output to Power Continuous Transient National Instruments Corporation Accuracy 5 C to 45 C 0 5 C 0 0125 C C Input Bias Current 25 nA Input Resistance Power On 5MQ Power Off 40kQ Overload 40kQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 2 pV rms Output 100 kHz Bandwidth 200 uV rms Bandwidth 3 dB 4 Hz Output Rise Time 10 to 90 Span 200 ms 1500 V rms maximum 3 V maximum ANSI IEEE C37 90 1 1989 B 27 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Common Mode Rejection CMR 1k 2 Source Imbalance 50 60 Hz 160 dB Normal Mode Rejection NMR 50 60 Hz 60 dB Input Protection Continuous 240 V rms maximum Transient ANSI IEEE C37 90 1 1989 Output Resistance 50 Q Voltage Output Protection Continuous Short to Ground Output Selection Time 6 us Ciioad 0 to 2 000 pF Output Enable Control Max Logic 0 havy Max Logic 1 436 V Input Current 0 0 4 mA Open Inpu
57. ent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation Trademarks LabVIEW National Instruments ni com and NI PGIA are trademarks of National Instruments Corporation Product and company names mentioned herein are trademarks or trade names of their respective companies WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS 1 NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN 2 IN ANY APPLICATION INCLUDING THE ABOVE RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY COMPUTER HARDWARE MALFUNCTIONS COMPUTER OPERATING SYSTEM SOFTWARE FITNESS FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION INSTALLATION ERRORS SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS MAL
58. entially connects each of its inputs to its output typically at high speeds in order to measure several signals with a single analog input channel normally closed or not connected National Instruments driver software for DAQ hardware SC 2311 User Manual Glossary NO noise nonlatched digital I O nonreferenced signal sources NRSE 0 onboard channels optical isolation output slew rate P pad passband SC 2311 User Manual normally open an undesirable electrical signal noise comes from external sources such as the AC power line motors generators transformers fluorescent lights soldering irons CRT displays computers electrical storms welders radio transmitters and internal sources such as semiconductors resistors and capacitors Noise corrupts signals you are trying to send or receive a type of digital acquisition generation where LabVIEW updates the digital lines or port states immediately or returns the digital value of an input line Also called immediate digital I O or non handshaking signal sources with voltage signals that are not connected to an absolute reference or system ground Also called floating signal sources Some common example of nonreferenced signal sources are batteries transformers or thermocouples nonreferenced single ended mode all measurements are made with respect to a common NRSE measurement system reference but the voltage at this reference can vary wit
59. etic Compatibility EMC EMII eenennnnnne CE C Tick and FCC Part 15 Class A Compliant Electrical emissions eene EN 55011 Class A at 10 m FCC Part 15A above 1 GHz Electrical immunity essse Evaluated to EN 61326 1 1997 A1 1998 Table 1 NI HQ EN 61010 1 ER Note For full EMC and EMI compliance you must operate this device with shielded cabling See the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product click Declaration of Conformity at http www ni com hardref nsf This website lists the DoCs by product family Select the appropriate product family followed by your product and a link to the DoC in Adobe Acrobat format appears Click the Acrobat icon to download or read the DoC In addition you cannot use BNC panelettes for full CE compliance SC 2311 User Manual A 2 ni com Appendix A Specifications for SSR Series SSR Series Input Output Modules Logic levels esaet 0to5V Input to output capacitance 8 pF max Operating temperature 0 to 55 C Storage temperature sess 20 to 70 C Maximum working voltage 300 V Category II SSR Series input module characteristics Characteristic SSR IDC 5 SSR IAC 5 SSR IAC 5A Nominal input 5 VDC 120 VAC 240 VAC Volt
60. g the internal computer side circuitry from field side overvoltage conditions In addition the 5B36 is mix and match and hot swappable with all other 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power SC 2311 User Manual B 20 ni com Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the switch is to be on at all times the enable input should be grounded to output common as it is on the 5B01 and 5B08 backplanes l SIGNAL ISOLATION CHOPPER ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION NC s NO CONNECTION Figure 1 5B36 Functional Block Diagram Input Types e Potentiometers Slidewires to 10kQ Output Range E 2 MRE POTENTIO METER SLIDEWIRE e 0to 45 V Figure 2 5B36 Input Field Connections National Instruments Corporation B 21 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B36 Specifications typical 25 C and V 5 V dc Description Model 5B36 Input Ranges Standard Ranges 0 Q to 10 KQ Refer to Model Table Custom Ranges o Q to 10 kQ Refer to Ordering Section Output Range RL gt 50 KQ 0Vto 5 V Accuracy Initial 25 C 0 08 Span Input Offset vs Temperature 100 2 500 Q 1 KO Sensors 0 004 C 10 k Sensor 0 01 Q C
61. gain Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal An additional benefit the output section acts as a third floating port eliminating possible problems from ground loops and power supply noise The output common must be kept within 3 V of power common National Instruments Corporation B 29 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched as on the 5B01 and 5B08 backplanes ANTI ALIASING FALTER uo COMMON PROTECTED EXCITATION READ SOURCE ENABLE POWER ISOLATION 5vDC POWER COMMON ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B38 Functional Block Diagram Exc Lo HI EXC EXC HI EXC TA RA HALF BRIDGE STRAIN GAGE QUARTER BRIDGE STRAIN GAGE FULL BRIDGE STRAIN GAGE Figure 2 5B38 Input Field Connections SC 2311 User Manual B 30 n
62. ge 5 V dc 5 Power Supply Current 15 mA Power Supply Sensitivity RTI 2 uV of V Mechanical Dimensions 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm National Instruments Corporation B 23 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Environmental Temperature Range Rated Performance 40 C to 85 C Operating 40 C to 85 C Storage 40 C to 85 C Relative Humidity 0 to 93 40 C noncondensing RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft 0 025 For Cu RTD s 0 1 For Ni RTD s Includes the combined effects of repeatability hysteresis and nonlinearity error Loads heavier than 50 kQ will degrade nonlinearity and gain temperature coefficient The user s board layout must separate Power Common from Output Common When the output Switch is not used connect the Enable Input to the Output Common Output Common is connected to power common when the 5B36 is installed on a 5B Series backplane Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved SC 2311 User Manual B 24 ni com Appendix B 5B Series Module Data Sheets 5B37 Isolated Thermocouple Input Functional Description The 5B37 is a single channel signal conditioning module that interfaces amplifies and filters J K T E R S N and C type thermocouple and provides an isolated and WWE Boat CT protected precision output of 0 to
63. h volts output low reference voltage voltage supply signal multiple voltage readings taken at a specific sampling rate the highest voltage that should be applied to a product during normal use normally well under the breakdown voltage for safety margin G 16 ni com Index Numbers 5B Series modules overview 1 2 3 1 to 3 2 power requirements for SC 2311 shielded carrier with 5B Series modules C 1 to C 2 5B30 5B31 voltage input modules functional description B 2 to B 3 overview 3 2 specifications B 4 to B 5 5B32 process current input modules functional description B 6 to B 7 overview 3 2 specifications B 8 to B 9 5B34 RTD input modules isolated 2 or 3 wire functional description B 10 to B 11 overview 3 2 specifications B 12 to B 14 5B35 RTD input modules isolated 4 wire functional description B 15 to B 16 overview 3 3 specifications B 17 to B 19 5B36 potentiometer input modules functional description B 20 to B 21 overview 3 3 specifications B 22 to B 24 5B37 thermocouple input module with cold junction compensation functional description B 25 to B 26 overview 3 3 specifications B 27 to B 28 5B38 strain gauge input module functional description B 29 to B 31 overview 3 4 specifications B 31 to B 33 National Instruments Corporation 5B40 5B41 voltage input modules functional description B 34 to B 35 overview 3 2 specifications B 36 to B 37 5B42 process current input module wit
64. h 20 VDC loop functional description B 38 to B 39 overview 3 4 specifications B 40 to B 41 5B45 46 frequency input module functional description B 42 to B 43 overview 3 4 specifications B 44 to B 46 5B47 linearized thermocouple input module with cold junction compensation functional description B 47 to B 48 overview 3 5 specifications B 49 to B 50 A analog inputs specifications SC 2311 shielded carrier A 1 analog signal conditioning modules interfacing with SC 2311 shielded carrier 1 1 C configuration of SC 2311 shielded carrier 2 1 to 2 6 parts locator diagram 2 3 safety information 2 5 to 2 6 setting switches SW2 2 5 SW3 2 4 to 2 5 SWA 2 4 SWS 2 4 top cover removal figure 2 2 SC 2311 User Manual Index conventions used in manual iv customer education D 1 D digital I O specifications SC 2311 shielded carrier A 1 digital signal conditioning modules interfacing with SC 2311 shielded carrier 1 1 E electromagnetic compatibility specifications SC 2311 shielded carrier A 2 environment specifications SC 2311 shielded carrier A 2 installation of SC 2311 shielded carrier I O panelettes 2 7 to 2 9 mounting 2 9 to 2 11 stack mount kit 2 10 to 2 11 standard 19 in rack 2 9 to 2 10 safety information 2 5 to 2 6 unpacking SC 2311 shielded carrier 1 4 I O panelettes 2 7 to 2 9 installation 2 7 to 2 8 labels 2 8 to 2 9 mounting the SC 2311 shielded carrier 2 9 to 2 11
65. h respect to the measurement system ground channels provided by the plug in data acquisition device the technique of using an optoelectric transmitter and receiver to transfer data without electrical continuity to eliminate high potential differences and transients the maximum rate of change of analog output voltage from one level to another a soldering location in the PWB used by the customer for signal connection the range of frequencies which a device can properly propagate or measure G 10 ni com pattern generation PC Card PCI PCMCIA peak to peak PFI PGIA pipeline Plug and Play devices port posttriggering potentiometer National Instruments Corporation G 11 Glossary a type of handshaked latched digital I O in which internal counters generate the handshaked signal which in turn initiates a digital transfer Because counters output digital pulses at a constant rate this means you can generate and retrieve patterns at a constant rate because the handshaked signal is produced at a constant rate a credit card sized expansion card that fits in a PCMCIA slot often referred to as a PCMCIA card Peripheral Component Interconnect a high performance expansion bus architecture originally developed by Intel to replace ISA and EISA It is achieving widespread acceptance as a standard for PCs and work stations it offers a theoretical maximum transfer rate of 132 Mbytes s an expansion bus archit
66. high and a low level Deutsche Industrie Norme digital input output the addition of Gaussian noise to an analog input signal for the purpose of increasing the resolution of a measurement when using averaging performing frequency division on an internal signal SC 2311 User Manual Glossary drivers dropout voltage dynamic range E EMC EMI E Series event external trigger EXTREF EXTSTROBE F false triggering F filtering floating signal sources FREQ_OUT SC 2311 User Manual software that controls a specific hardware device such as a DAQ device or a GPIB interface the minimum sustained voltage required in order for the circuit to remain active the ratio of the largest signal level a circuit can handle to the smallest signal level it can handle usually taken to be the noise level normally expressed in decibels electromechanical compliance electromagnetic interference a standard architecture for instrumentation class multichannel data acquisition deices the condition or state of an analog or digital signal a voltage pulse from an external source that triggers an event such as A D conversion external reference signal external strobe signal triggering that occurs at an unintended time frequency cutoff a type of signal conditioning that allows you to filter unwanted signals from the signal you are trying to measure signal sources with voltage signals that are not connected to a
67. i com Appendix B 5B Series Module Data Sheets Input Type e Strain Gage Full Bridge Half Bridge Output Ranges e 5Vto45V 5B38 Specifications Description Model 5B38 Full Bridge Model 5B38 Half Bridge Input Ranges Standard Ranges x20 mV 2 mV V Sensitivity x30 mV 3 mV V x30 mV 3 mV V Sensitivity Sensitivity Custom Ranges 10 mV to 500 mV Output Ranges RL gt 50 kQ 5 V to 5 V Accuracy Initial 25 C 0 08 Span 10 uV RTI 0 08 Span 1 mV RTI Nonlinearity 0 02 Span Input Offset vs Temperature 1 pV C Output Offset vs Temperature 40 uV C Gain vs Temperature 25 ppm of Reading C Excitation Voltage Output full 10 V 3 mV load Load Range 10 kQ minimum 300 Q maximum Load Regulation 5 ppm mA ji vs Temperature 15 ppy C a Half Bridge Voltage Level N A 5 V 1 mV Half Bridge Voltage vs Temperature N A 15 ppy C Input Bias Current 23 nA National Instruments Corporation B 31 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Input Resistance Power On 20 MQ minimum s Power Off 40 k minimum m Overload 40kQ minimum Noise Input 0 1 Hz to 10 Hz Bandwidth 0 4 u V rms 2 uV rms Input 10 kHz Bandwidth 370 n V A Hz 3250 nVV Hz Output 100 kHz Bandwidth 10 mV peak peak i Bandwidth 3 dB 10 kHz x Output Rise Time 10 to 90 40 us Span Output Settling Time to 0 1 250 us 7 ms Common Mod
68. ide an easy to use means of digitally controlling or sensing voltages from field devices The SSR Series modules are high performance fully encapsulated devices that you can insert into any of the eight available slots on the SC 2311 The SC 2311 also has light emitting diodes LEDs that indicate the status of each SSR Series module SC 2311 User Manual 1 2 ni com Chapter 1 Introduction What You Need to Get Started To set up and use the SC 2311 you need the following items Q Q D National Instruments Corporation SC 2311 shielded carrier Up to eight of the following 5B Series modules for analog signal conditioning 5B30 31 5B32 5B34 5B35 5B36 5B37 5B38 5B40 41 5B42 5B45 46 5B47 Up to eight of the following SSR Series modules for digital signal conditioning SSR IAC 5 SSR IAC 5A SSR IDC 5 SSR OAC 5 SSR OAC 5A SSR ODC 5 SC 2311 User Manual External power supply supplied 68 pin E Series DAQ device documentation and 68 pin E Series cable Flathead screwdriver 0 1 in supplied Number 1 and 2 Phillips head screwdrivers SC 2311 User Manual Chapter 1 Introduction Q Wire insulation strippers Q NI DAQ 6 9 or later driver software C One or more I O panelettes and label sheet Unpacking Your SC 2311 shielded carrier is shipped in a cardboard box The 5B and SSR Series modules are shipped i
69. ielded carrier 5B Series modules and SSR Series modules It also lists what you need to get started and explains how to unpack your SC 2311 and signal conditioning modules The SC 2311 connects signals to E Series DAQ devices The SC 2311 can interface up to eight 5B Series modules and eight SSR Series modules simultaneously When used with the 5B Series modules SSR Series modules and a shielded 68 pin E Series cable the SC 2311 offers a clean easy to use solution to analog and digital signal conditioning that is both portable and rugged The SC 2311 also provides 50 terminal block connections for non isolated measurements This feature allows you direct access to the I O signals from the E Series DAQ device The SC 2311 has internal terminal blocks for connecting to the 5B Series modules as well as the SSR Series modules The SC 2311 allows you to optimize connectivity to the terminal blocks through the use of panelettes The SC 2311 shielded carrier has a portable enclosure and is ideal for laptop and desktop applications The 5B Series modules along with the SC 2311 provide a high performance inexpensive means of analog signal conditioning You can insert the 5B Series modules into any of the eight available slots on the carrier The 5B Series modules along with the SC 2311 provide analog input measurements such as voltage current resistance temperature strain and frequency The SSR Series modules along with the SC 2311 prov
70. input signals from the thermocouples into a 0 5 V output signal that is routed from the SC 2311to the E Series DAQ device for measurement You can insert and use the 5B37 thermocouple input modules in any of the eight 5B channels inside the SC 2311 National Instruments Corporation 3 3 SC 2311 User Manual Chapter 3 5B Series Modules 5B38 Strain Gauge Input Module The 5B38 strain gauge input module features a bandwidth of 10 kHz The 5B38 accepts input signals from full and half bridge 300 Q to 10 kQ transducers The 5B38 also provides a 10 V excitation and produces an output signal of 5 to 5 V that is routed from the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B38 strain gauge input modules in any of the eight 5B channels inside the SC 2311 5B42 Process Current Input Module with 20 VDC Loop The 5B42 process current input module interfaces with 2 wire transmitters and provides an isolated regulated 20 V supply for current measurement The module filters and amplifies the 4 20 mA process current input to produce an accurately scaled low noise low impedance output of 1 to 5 V or 2 to 10 V You can insert and use the 5B42 process current input modules in any of the eight 5B channels inside the SC 2311 9B45 46 Frequency Input Module The 5B45 frequency input modules accept full scale frequency signals ranging from 500 Hz to 20 kHz The 5B46 frequency input modules accept
71. itions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMER S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or neglig
72. ity 0 01 Span Input Offset vs Temperature 0 5 uV C Output Offset vs Temperature 5 uV Cc Gain vs Temperature 0 0025 of Reading C Input Sense Resistor 25 Q Noise Input 0 1 Hz to 10 Hz Bandwidth 10 nA rms Output 100 kHz Bandwidth 200 uV peak peak Bandwidth 3 dB 100 Hz Output Step Rise Time 10 to 90 Span 4 ms Common Mode Voltage CMV Output to Input Continuous 1500 V rms maximum Input to Power Continuous 1500 V rms maximum Output to Power Continuous 250 V rms maximum Transient ANSI IEEE C37 90 1 1989 Common Mode Rejection CMR n kQ Source Imbalance 50 60 Hz 140 dB Normal Mode Rejection NMR 3 dB 100 Hz 90 dB per decade 100 Hz Input Excitation and Sense Resistor Protection Continuous 240 V rms maximum SC 2311 User Manual B 40 ni com Transient Output Resistance Voltage Output Protection Appendix B 5B Series Module Data Sheets ANSI IEEE C37 90 1 1989 25 Q Continuous Short to Ground Input Current 0 1 Power Supply Voltage Power Supply Current Mechanical Dimensions Environmental Temperature Range Transmitter Load of 20 mA Transmitter Load of 4 mA Power Supply Sensitivity RTI Output Current Limit 20m o Output Selection Time 6 us to 1 mV of V4 Cj 17 0 to 2 000 pF Output Enable Control Max Logic 0 osy Min Logic 1 h2 vy Max Logic 1 36y 0000000000 0 5 uA 5 V dc 5 200 mA 100 mA 1
73. k hazard while you connect the lines Connections including power signals to ground and vice versa that exceed any of the maximum signal ratings on the SC 2311 device can create a shock or fire hazard or can damage any or all of the boards connected to the SC 2311 the host computer and the SC 2311 device National Instruments is not liable for any damages or injuries resulting from incorrect signal connections If hazardous voltages 230 Vims and 42 4 V peak or 60 VDC are present you must connect a safety earth ground wire to the safety ground screw terminal shown in Figure 2 2 This complies with safety agency requirements and protects against electric shock when the SC 2311 is not connected to an installed DAQ device To connect the safety earth ground to the safety ground screw terminal run an earth ground wire from the signal source to the screw terminal National Instruments is nof liable for any damages or injuries resulting from inadequate safety earth ground connections Clean the SC 2311 and accessories by brushing off light dust with a soft nonmetallic brush Remove other contaminants with a stiff nonmetallic brush The unit must be completely dry and free from contaminants before returning it to service SC 2311 User Manual 2 6 ni com Chapter 2 Configuring and Setting Up the SC 2311 Using the 1 0 Panelettes Select configurable I O panelettes appropriate for the I O connectivity needs of your application The I O panelettes
74. le to provide output offset drift of only 5 uV C and gain drift of just 25 ppm C Why an Internal Current Sense Resistor The 5B42 offers significant advantages over signal conditioners that require an external current sense resistor First an external resistor is not protected from accidental connection to a 240 V rms power line Next the external resistor tolerance must be added to the conditioners specified errors In contrast the 5B42 is calibrated and specified with its internal 25 Q sense resistor Further the 5B42 signal input loop supply and the sense resistor are all protected against accidental application of excess voltages up to 240 V rms Finally there is no need to install an external sense resistor on the backplane but if one is installed it will not affect 5B42 performance Filtering and Protection The 5B42 contains an optimized five pole low pass filter with a 3 dB bandwidth at 100 Hz that provides a low overshoot step response and exceptionally low noise of 200 uV pk pk in a 100 kHz bandwidth Attenuation normal mode rejection increases at a 90 dB decade rate beyond 100 Hz SC 2311 User Manual B 38 ni com Appendix B 5B Series Module Data Sheets The module protects the computer side from damage due to field side overvoltage faults The module withstands 240 V rms at the input terminals without damage thereby shielding the internal computer side circuitry from field side overvoltage conditions In addition the 5B
75. ltage sources lower is better and the voltage driving ability of current sources higher is better simultaneous sampling a property of a system in which each input or output channel is digitized or updated at the same instant solid state relay start scan signal system timing controller a thin conductor which is attached to a material that detects stress or vibrations in that material The resistance of the conductor is a function of the applied force devices that do not require DIP switches or jumpers to configure resources on the devices also called Plug and Play devices 1 hardware a property of an event that is synchronized to a reference clock 2 software a property of a function that begins an operation and returns only when the operation is complete a measure of the amount of noise present in an analog circuit or when the analog inputs are grounded G 14 ni com T H TC TCR thermistor thermocouple transducer transducer excitation TRIG trigger TTL U unipolar update UPDATE update rate National Instruments Corporation G 15 Glossary track and hold a circuit that tracks an analog voltage and holds the value on command 1 terminal count the highest value of a counter 2 thermocouple temperature coefficient of resistance a semiconductor sensor that exhibits a repeatable change in electrical resistance as a function of temperature Most thermistors exhibit a negativ
76. measurement of small signals in high electrical noise Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within 3 V of power common National Instruments Corporation B 25 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched as on the 5BO1 and 5B08 backplanes 25V Sou oc CHOPPER DIFF AMP ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B37 Functional Block Diagram Input Types Thermocouple Types J K TER SB NC Output Range AC1361 THERMOCOUPLE e 0to45 V Figure 2 5B37 Input Field Connections 5 V to 45 V custom SC 2311 User Manual B 26 ni com Appendix B 5B Series Module Data Sheets 5B37 Specifications typical 25 C and V 5 V dc Description Model 5B37 Input Ranges Standard Ranges Refer to Mod
77. must connect the external power supply to power the SSR Series modules Setting SW2 to the Board 5V SSR position powers the SSR modules using the E Series DAQ device 5 V supply In this mode you can power the SSR Series modules directly from the E Series DAQ device 3 Note The maximum current that the DAQ device can deliver depends on which DAQ device you have selected When using the Board 5V SSR setting it is necessary to know the current requirements of the SSR Series modules and the current available from the DAQ device you are using Safety Information UN Cautions Do not operate the device in an explosive atmosphere or where there may be flammable gases or fumes Keep away from live circuits Do not remove equipment covers or shields unless you are trained to do so If signal wires are connected to the device hazardous voltages can exist even when the equipment is turned off To avoid a shock hazard do not perform procedures involving cover or shield removal unless you are qualified to do so and disconnect all field power prior to removing covers or shields Equipment described in this document must be used in an Installation Category II environment per IEC 60664 1 Do not operate damaged equipment The safety protection features built into this device 1 Category II refers to local level power distribution such as that provided by a standard wall outlet National Instruments Corporation 2 5 SC 2311 User Manual
78. n nnde pae ee ttn d e Re ERR TO EF ER edid teri ege 2 5 Using the I O Panelettes 2 RE te ee E e tres 2 7 I O Panelette Labels 5 e e tene T ae Dorn 2 8 Mounting the SC 231T1 aede teet ec dete TEE erp 2 9 Chapter 3 9B Series Modules OVerVIeW iiie esoaenputeg tiq iq RR REP REPRE 3 1 5B30 5B31 5B40 5B41 Voltage Input Module eene 3 2 5B32 Process Current Input Module seen 3 2 5B34 RTD Input Isolated 2 or 3 Wire RTD Module eee 3 2 5B35 RTD Input Isolated 4 Wire RTD Module eee 3 3 5B36 Potentiometer Input Module eese 3 3 5B37 Thermocouple Input Module with Cold Junction Compensation 3 3 5B38 Strain Gauge Input Module sese 3 4 5B42 Process Current Input Module with 20 VDC Loop e 3 4 5B45 46 Frequency Input Module eese ren em eenenne 3 4 5B47 Linearized Thermocouple Input Module with Cold Junction Compensation 3 5 National Instruments Corporation V SC 2311 User Manual Contents Chapter 4 SSR Series Modules OVEEVIGWoocestetode eue EA ire E e Med oie MIND m oM kc Ine M tak oles ates Srestet Ses aden doses a8 4 1 Input Modules er ertet eva tede ete Pe etr eee Re Eee es 4 1 SSR IAC 5 120 V AQ io eee traten nes ere re ELE Ge cavesagdeccsvessee 4 2 SSRSIAC 5A 240 NV AC nisse rettet ere eei eroe ipee 4 2
79. n absolute reference or system ground Also called nonreferenced signal sources Some common example of floating signal sources are batteries transformers or thermocouples frequency output signal G 6 ni com G GPCTRO GATE GPCTRO OUT GPCTRO SOURCE GPCTRI GATE GPCTRI OUT GPCTR1_SOURCE grounded measurement system H h hardware triggering I O in input impedance input offset current instrumentation amplifier National Instruments Corporation G 7 Glossary general purpose counter timer 0 gate signal general purpose counter timer 0 output signal general purpose counter timer 0 clock source signal general purpose counter timer 1 gate signal general purpose counter timer 1 output signal general purpose counter timer 1 clock source signal See RSE hour a form of triggering where you set the start time of an acquisition and gather data at a known position in time relative to a trigger signal hertz the number of scans read or updates written per second input output the transfer of data to from a computer system involving communications channels operator interface devices and or data acquisition and control interfaces inch or inches the measured resistance and capacitance between the input terminals of a circuit the difference in the input bias currents of the two inputs of an instrumentation amplifier a circuit whose output voltage with respect to ground is proportional to the differen
80. n antistatic packaging to prevent electrostatic damage to the modules Electrostatic discharge can damage several components on these products To avoid such damage when you handle the products take the following precautions e Ground yourself by using a grounding strap or by touching a grounded object e Touch the antistatic package to a metal part of your computer chassis before removing the modules from the packaging AN Caution Never touch the exposed pins of connectors e Remove the modules from the packaging and inspect the modules for any sign of damage Notify National Instruments if the modules appear damaged in any way Do not install a damaged module into your system SC 2311 User Manual 1 4 ni com Configuring and Setting Up the SC 2311 This chapter explains how to configure the SC 2311 provides safety information and explains how to install I O panelettes and mounting accessories Configuring the SC 2311 The SC 2311 contains the following slide switches that are used to configure the device SW5 e SW4 e SW3 e SW2 You must configure these slide switches prior to operating the SC 2311 To access the slide switches remove the eight top cover screws and the top cover as shown in Figure 2 1 See Figure 2 2 for switch locations National Instruments Corporation 2 1 SC 2311 User Manual Chapter 2 Configuring and Setting Up the SC 2311 1 Top Cover Screws 2 Top Cover 3 SC 2311
81. ni com Noise Output 100 KHz Bandwidth Output 5 MHz Bandwidth Appendix B 0 7 mV peak peak m 7 mV peak peak Output Ripple Bandwidth 3 dB Output Step Response Time 10 mV peak peak 10 Fspan i F full scale 10 Hz 190 Hz Refer to Model Table i Common Mode Voltage CMV Input to Output Continuous 1500 V rms maximum Output to Power Continuous 3 V maximum Transient ANSI IEEE C37 90 1 1989 Common Mode Rejection CMR 1 KQ Source Imbalance 50 60 Hz 120 dB Input Protection Continuous Transient Output Resistance Voltage Output Protection 240 V rms maximum ANSVIEEE C37 90 1 1989 fF 50 Q r Continuous Short to Ground Output Selection Time 6 us Ciioad 0 to 2 000 pF ie Output Enable Control Max Logic 0 1 0 V Min Logic 1 25v Max Logic 1 36 V i Input Current 0 ama Power Supply Voltage Power Supply Current Power Supply Sensitivity RTO Mechanical Dimensions 45 V 5 70 mA 0 005 of Span of Vs 2 275 x 2 375 x 0 595 t 57 8 mm x 59 1 mm x 15 1 mm National Instruments Corporation B 45 5B Series Module Data Sheets SC 2311 User Manual Appendix B 5B Series Module Data Sheets Environmental Temperature Range Rated Performance 40 C to 85 C Operating Performance 40 C to 85 C Storage 40 C to 85 C Relative Humidity 0 to 9396 40 C noncondensing
82. nput modules with cold junction compensation National Instruments Corporation 3 1 SC 2311 User Manual Chapter 3 5B Series Modules See Appendix C Power Requirements for the SC 2311 with 5B and SSR Series Modules to calculate the power requirements for your 5B Series modules 5B30 5B31 5B40 5B41 Voltage Input Module The 5B Series voltage input modules can accept input measurement ranges from 10 mV to 20 V These modules scale the input voltage to a 5 V range that is routed from the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B Series voltage input modules in any of the eight 5B channels inside the SC 2311 5B32 Process Current Input Module The 5B32 process current input modules can accept either 4 20 mA or 0 20 mA and scale this current to a 0 5 V signal This measurement is accomplished by reading the voltage across a precision 20 Q resistor that is included with the 5B32 module These modules scale the input current to a 0 5 V output signal that is routed from the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B32 process current input modules in any of the eight 5B channels inside the SC 2311 9B34 RTD Input lIsolated 2 or 3 Wire RTD Module The 5B34 RTD input modules are capable of making isolated 2 or 3 wire RTD measurements and can accept a large variety of different RTD types The 5B34 modules scale the RTD temperature measureme
83. nt kit 2 Attach a rack mount bracket to the other side of the enclosure with four 4 40 x 1 4 in screws from the rack mount kit Sy Note You must remove the rubber feet from the bottom of the SC 2311 enclosure for use in rack mount applications National Instruments Corporation 2 9 SC 2311 User Manual Chapter 2 Configuring and Setting Up the SC 2311 1 4 40x 1 4 in Screws 2 Rack Mount Brackets Figure 2 6 Rack Mount Option Refer to Figure 2 7 and use the following steps to install the stack mount kit on your SC 2311 configurable connector enclosure 1 Attach the stack mount brackets to both ends of the lower enclosure with the 4 40 x 1 4 in flathead screws from the stack mount kit 2 Place the upper enclosure on top of the lower enclosure Attach the stack mount brackets to both ends of the upper enclosure with the 4 40 x 1 4 in flathead screws from the stack mount kit 3 Note You must remove the rubber feet from all but the bottom enclosure before stacking the enclosures SC 2311 User Manual 2 10 ni com Chapter 2 Configuring and Setting Up the SC 2311 1 4 40X 1 4 in Flathead Screws 2 Stack Mount Brackets Figure 2 7 Stack Mount Option You can stack additional enclosures by using additional stack mount kits You can remove the stack mount kit handles if necessary by removing the two screws that attach the handle hy Note You can also use the
84. nt to a 0 5 V output signal that is routed from the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B34 RTD input modules in any of the eight 5B channels inside the SC 2311 SC 2311 User Manual 3 2 ni com Chapter 3 5B Series Modules 9B35 RID Input Isolated 4 Wire RTD Module The 5B35 RTD input modules are capable of making isolated 4 wire RTD measurements Like the 5B34 the 5B35 scales the RTD temperature measurement into a 0 5 V output signal that the E Series DAQ device can measure You can insert and use the 5B35 RTD input modules in any of the eight 5B channels inside the SC 2311 5B36 Potentiometer Input Module The 5B36 potentiometer input modules accept a wide variety of 3 wire potentiometers and 2 wire rheostats The 5B36 scales the potentiometer measurement into an accurate 0 5 V output signal that is routed from the SC 2311 to the E Series DAQ device for measurement You can insert and use the 5B36 potentiometer input modules in any of the eight 5B channels inside the SC 2311 9B37 Thermocouple Input Module with Cold Junction Compensation The 5B37 thermocouple input module is capable of accepting input signals from J K T E R S and B type thermocouples The 5B37 also uses cold junction compensation circuitry which is part of the SC 2311 accessory to compensate for the parasitic thermocouples formed at the input screw terminals of the SC 2311 The 5B37 scales the
85. o set the zero scale value For user convenience the zero can be optionally factory set to meet custom needs This allows suppression of a zero scale input value many times larger Internal multi pole lowpass filtering with a four Hz cutoff 3dB enhances normal mode noise on signal and common mode noise on signal return rejection at 50 60 Hz enabling accurate measurement of small signals in high electrical noise Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within 3 V of power common SC 2311 User Manual B 2 ni com Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched ISOLATED INFUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B30 and 5B31 Functional Block Diagram Input Ranges e 5B30 mV Input 10 to 100 mV 5 to 500 mV custom e 5B31 V Input
86. o called handshaked digital I O G 8 ni com library linearity linearization LSB Measurement amp Automation Explorer MAX MIO MS MSB mux NC NI DAQ National Instruments Corporation G 9 Glossary a file containing compiled object modules each comprised of one of more functions that can be linked to other object modules that make use of these functions NIDAQ32 LIB is a library that contains NI DAQ functions The NI DAQ function set is broken down into object modules so that only the object modules that are relevant to your application are linked in while those object modules that are not relevant are not linked the adherence of device response to the equation R KS where R response S stimulus and K a constant a type of signal conditioning in which software linearizes the voltage levels from transducers so the voltages can be scaled to measure physical phenomena least significant bit meters 1 Mega the standard metric prefix for 1 million or 10 when used with units of measure such as volts and hertz 2 mega the prefix for 1 048 576 or 220 when used with B to quantify data or computer memory a controlled centralized configuration environment that allows you to configure all of your National Instruments DAQ GPIB IMAQ IVI Motion VISA and VXI devices multifunction I O million samples most significant bit multiplexer a switching device with multiple inputs that sequ
87. ock Diagram Input Ranges e 5B40 mV Input 10 mV to 100 mV 5 mV to 500 mV custom e 5B41 V Input 1 V to 20 V 0 5 V to 20 V custom Figure 2 5B40 and 5B41 Input Field Connections Output Ranges e 5B40 5B41 5 V to 5 V or 0 to 5 V National Instruments Corporation B 35 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B40 and 5B41 Specifications Description Model 5B40 Model 5B41 Input Ranges 10 mV to 100 mV 5 mV to 500 mV Standard Ranges Custom Ranges Output Ranges RL gt 50 k Q2 5 V to 5 V or 0 V to 5 V 1 V to 20 V 0 5 V to 20 V Accuracy Initial 25 C 0 05 Span 10 uV RTI 0 05 Vz 0 05 Span 0 05 Vz Nonlinearity 0 02 Span Input Offset vs Temperature 1 uV C 20 uV C Output Offset vs Temperature 40 uV C Gain vs Temperature 25 ppm of Reading C Input Bias Current 3 nA 50 ppm of Reading C 0 2 nA Input Resistance Power On 200 MQ Power Off 40kQ Overload 40kQ 650 kQ 650 kQ 650 kQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 4 uV rms Output 100 kHz Bandwidth 10 mV peak peak Bandwidth 3 dB 10 kHz 2 uV rms m i Output Rise Time 10 to 90 35 us Span Common Mode Voltage CMV Input to Output Continuous 1500 V rms maximum Output to Power Continuous 3 V maximum Transient ANSI IEEE C37 90 1 1
88. off On devices with simultaneous sampling for example the PCI 6110E this clock clocks the track and hold circuitry the number of scans per second For example a scan rate of 10 Hz means sampling each channel 10 times per second scan clock signal single ended a term used to describe an analog input that is measured with respect to a common ground a property of a DAQ device that has an extremely stable onboard reference and calibrates its own A D and D A circuits without manual adjustments by the user SC 2311 User Manual Glossary Sensor settling time signal conditioning SNR software trigger software triggering source impedance SS SSR STARTSCAN STC strain gauge switchless device synchronous system noise SC 2311 User Manual a device that responds to a physical stimulus heat light sound pressure motion flow and so on and produces a corresponding electrical signal the amount of time required for a voltage to reach its final value within specified limits the manipulation of signals to prepare them for digitizing signal to noise ratio the ratio of the overall rms signal level to the rms noise level expressed in decibels a programmed event that triggers an event such as data acquisition a method of triggering in which you simulate an analog trigger using software Also called conditional retrieval a parameter of signal sources that reflects current driving ability of vo
89. ouple for a downscale response connect a 20 M Q 0 25 W resistor across screw terminals 1 and 3 The 5B47 protects the computer side from damage due to field side overvoltage faults All models withstand 240 V rms at their input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions Further the 5B47 is mix and match and hot swappable with other 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power Inside the 5B47 Module A chopper stabilized input amplifier provides low drift and stable gain At the amplifier input a stable laser trimmed zero scale input voltage is subtracted from the input signal to set the zero scale value For user convenience the zero can be optionally factory set to meet custom needs This allows suppression of a zero scale input value many times larger Internal multi pole lowpass filtering with a four Hz cutoff 3 dB provides 60 dB of normal mode rejection noise on signal and enhancement of common mode rejection noise on signal return at 60 Hz enabling accurate measurement of small signals in high electrical noise National Instruments Corporation B 47 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully
90. put Bias Current m uv c 20 uV C 0 0025 of Reading C 0 25 C 0 75 C maximum 0 5 C x0 0125 C C 25 nA Input Resistance Power On 5 MQ Power Off 40 kQ Overload 40 kQ Noise Input 0 1 Hz to 10 Hz Bandwidth 0 2 uV rms Output 100 KHz Bandwidth Bandwidth 3 dB Output Rise Time 10 to 90 Span Common Mode Voltage CMV Input to Output Continuous 500 uV rms 4 Hz 200 ms 1500 V rms maximum Output to Power Continuous Transient Common Mode Rejection CMR 1 k Source Imbalance 50 60 Hz 3 V maximum ANSI IEEE C37 90 1 1989 160 dB National Instruments Corporation B 49 SC 2311 User Manual Appendix B 5B Series Module Data Sheets Normal Mode Rejection NMR 50 60 Hz 60 dB Input Protection Continuous 240 V rms maximum Transient ANSI IEEE C37 90 1 1989 Output Resistance 50 QO Voltage Output Protection Continuous Short to Ground Output Selection Time 6 us Coad 0 to 2 000 pF Output Enable Control Input Current o 0 bosmasa Open Input Response Upscale Open Input Response Time 10 seconds Power Supply Voltage 5 V 5 Power Supply Current 30 mA Power Supply Sensitivity RTI 2 uV of V Mechanical Dimensions 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range Rated Performance 25 C to 85 C Operating 40 C to 85 C Storage 40 C to 85 C Rela
91. r digital signal Analog signals can be single ended or differential For digital signals you group channels to form ports Ports usually consist of either four or eight digital channels the clock controlling the time interval between individual channel sampling within a scan Devices with simultaneous sampling do not have this clock a utility incorporated into MAX that allows you to descriptively name physical channels in your system a condition for starting or stopping clocks hardware component that controls timing for reading from or writing to groups common mode rejection ratio a measure of the ability of an instrument to reject interference from a common mode signal usually expressed in decibels dB the smallest detectable change in an input voltage of a DAQ device a method of compensating for inaccuracies in thermocouple circuits SC 2311 User Manual Glossary common mode noise common mode range common mode signal common mode voltage conditional retrieval conversion time counter timer crosstalk current drive capability current sinking current sourcing D D A DAC SC 2311 User Manual unwanted signals that appear in equal phase and amplitude on both the inverting and noninverting input in a differential measurement system Ideally but not completely in practice the measurement device ignores this noise because the measurement device is designed to respond to the difference between
92. rcuit Figure 4 3 SSR OAC AC Output Diagram 4 4 ni com Chapter 4 SSR Series Modules Unlike conventional relays the SSR OAC 5 output module has a zero voltage turn on of the load The SSR OAC 5 also requires a minimum output voltage and current to remain in the on state You can insert and use the SSR OAC 5 in any of the eight SSR sockets inside the SC 2311 SSR OAC 5A 240 VAC The SSR OAC 5A output module uses a DIO line from the E Series DAQ device to switch an external 24 280 VAC load at up to 3 5 A When the E Series DAQ device DIO line sends a logic low this turns on the corresponding SSR OAC 5A module and allows current to flow If a logic high is sent the module turns off You can insert and use the SSR OAC 5A in any of the eight SSR sockets inside the SC 2311 SSR ODC 5 3 60 DVC The SSR ODC 5 output module uses a DIO line from the E Series DAQ device to switch an external 3 60 VDC load at up to 3 A When the E Series DAQ device DIO line sends a logic low this turns on the corresponding SSR ODC 5 module and allows current to flow If a logic high is sent the module turns off Figure 4 4 shows the SSR ODC circuit diagram National Instruments Corporation 4 5 SC 2311 User Manual Chapter 4 SSR Series Modules Voltage Spike Protection Driver Circuit me RX qe OPY D Figure 4 4 SSR ODC DC Output Diagram
93. s essere C 2 National Instruments Corporation Vii SC 2311 User Manual Introduction This manual describes the electrical and mechanical aspects of the SC 2311 shielded carrier 5B Series modules SSR Series modules and accessory terminal blocks It also describes how to configure connect and customize the SC 2311 for use with National Instruments E Series data acquisition DAQ devices The SC 2311 shielded carrier interfaces with the following signal conditioning modules e Analog signal conditioning 5B30 5B31 5B40 5B41 voltage input modules 5B32 process current input modules 5B34 RTD input isolated 2 or 3 wire RTD modules 5B35 RTD input isolated 4 wire RTD modules 5B36 potentiometer input modules 5B37 thermocouple input with cold junction compensation modules 5B42 process current input with regulated 20 VDC loop modules 5B47 linearized thermocouple input with cold junction compensation modules 5B38 strain gauge input modules 5B45 46 frequency input modules Digital signal conditioning National Instruments Corporation SSR IAC 5 input module 120 VAC SSR IAC 5A input module 240 VAC SSR IDC 5 input module 3 to 32 VDC SSR OAC 5 output module 120 VAC SSR OAC 5A output module 240 VAC SSR ODC 5 output module 3 to 60 VDC 1 1 SC 2311 User Manual Chapter 1 Introduction About the SC 2311 5B Series Modules and SSR Series Modules This section describes the SC 2311 sh
94. s off SSR Series output modules are similar to conventional relays but there are some important differences Unlike conventional relays solid state relays require voltage on the load side Current needs to flow through them in the on state or they turn off even if a logic low signal is at their input This National Instruments Corporation 4 3 SC 2311 User Manual Chapter 4 SSR Series Modules occurrence is referred to as dropout If a solid state relay drops out you must turn it off with a logic high signal before you can turn it on again The dropout voltage and current specifications for the output modules are given in Appendix A Specifications For most control applications such as controlling motors or lamps these requirements are not difficult to meet Another difference between these output modules and conventional relays is that they do not turn off completely A small leakage current flows all the time even in the off state For most control applications this current causes no problems SSR OAC 5 120 VAC SC 2311 User Manual The SSR OAC 5 output module uses a DIO line from the E Series DAQ device to switch an external 24 140 VAC load at up to 3 5 A When the E Series DAQ device DIO line sends a logic low this turns on the corresponding SSR OAC 5 module and allows current to flow If a logic high is sent the module turns off Figure 4 3 shows the SSR OAC circuit diagram Trigger Ci
95. signal return rejection at 50 60 Hz enabling accurate measurement of small signals in high electrical noise Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within x3 Vdc of power common SC 2311 User Manual B 6 ni com Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the switch is to be on at all times the enable input should be grounded to power common as it is on the 5B01 and 5B08 backplanes CHOPPER DIFF AMP IBOLATED NPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION Figure 1 5B32 Functional Block Diagram Lo HI Input Ranges e 4 mA to 20 mA 200 PLUG IN RESISTOR AC1362 Output Ranges e 0to45 V 5 V to 5 V custom CURRENT SOURCE Figure 2 5B32 Input Field Connections National Instruments Corporation B 7 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B32 Specifications Description Input Ranges Stan
96. t Response Upscale 000000000 Open Input Response Time 10 seconds 00 Power Supply Voltage 5 V 5 Power Supply Current 30 mA Power Supply Sensitivity RTI Z uV 96 of V Mechanical Dimensions 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range Rated Performance 25 c to 85 C Operating 40 C to 85 C Storage 40 C to 85 C Relative Humidity 0 to 93 9 40 C noncondensing RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft Vz is the nominal input voltage that results in a 0 V output Includes the combined effects of repeatability hysteresis and nonlinearity and assumes RL gt 50 KQ Loads heavier than 50 k will degrade nonlinearity and gain temperature coefficient 3When used with the model AC1361 CJC sensor see Accessories section which is provided on each channel of 5B Series backplanes and mounting cards The output common must be kept within 3 V of power common Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved SC 2311 User Manual B 28 ni com Appendix B 5B Series Module Data Sheets 5B38 Isolated Wide Bandwidth Strain Gage Input Functional Description The 5B38 is a wide bandwidth single channel signal conditioning module that interfaces amplifies and filters signals from full bridge and WODEL S888 M half bridge strain gag
97. t signal to set the zero scale value For user convenience the zero can be optionally factory set to meet custom needs This allows suppression of a zero scale input value many times larger than the total span for precise expanded scale measurements A single pole anti aliasing filter resides at each modules input A three pole low pass filter in the output stage sets the bandwidth and yields optimal noise performance for accurate measurement of small signals in high electrical noise Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal The output common must be kept within 3 Vdc of power common SC 2311 User Manual B 34 ni com Appendix B 5B Series Module Data Sheets Convenience Features A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input The enable input should be grounded to power common if the output need not be switched ANT ALIASING l FILTER CHOPPER SIGNAL DIFF ISOLATION ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION NC NO CONNECTION Figure 1 5B40 and 5B41 Functional Bl
98. tion 1 collecting and measuring electrical signals from sensors transducers and test probes or fixtures and inputting them to a computer for processing 2 collecting and measuring the same kinds of electrical signals with A D and or DIO devices plugged into a computer and possibly generating control signals with D A and or DIO devices in the same computer decibel the unit for expressing a logarithmic measure of the ratio of two signal levels dB 20log10 V 1 V2 for signals in volts direct current allowing the transmission of both AC and DC signals a default parameter value recorded in the driver In many cases the default input of a control is a certain value often 0 that means use the current default setting a plug in data acquisition product card or pad that can contain multiple channels and conversion devices Plug in products PCMCIA cards and devices such as the DAQPad 1200 which connects to your computer parallel port are all examples of DAQ devices SCXI modules are distinct from devices with the exception of the SCXI 1200 which is a hybrid differential mode an analog input consisting of two terminals both of which are isolated from computer ground whose difference is measured a way you can configure your device to read signals in which you do not need to connect either input to a fixed reference such as the earth ground or a building ground See port a TTL level signal having two discrete levels a
99. tive Humidity 0 to 9396 40 C noncondensing RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft Includes the combined effects of repeatability hysteresis and nonlinearity and assumes RL gt 50 k Loads heavier than 50 k will degrade nonlinearity and gain temperature coefficient 2 1 uV C is equivalent to 0 02 C C for Type J thermocouples 0 025 C C for Type K and T thermocouples 0 016 C C for Type E thermocouples 0 168 C C for Type R and S thermocouples 5When used with the model AC1361 CJC sensor see Accessories section which is provided on each channel of 5B Series backplanes and mounting cards The output common must be kept within 3 V of power common Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved SC 2311 User Manual B 50 ni com Power Requirements for the SC 2311 with 5B and SSR Series Modules Use Tables C 1 and C 2 to determine how much power your SC 2311 consumes and whether or not the external power option is necessary Most E Series DAQ devices can supply 5 V at 1 A with the exception of DAQCard E Series devices Refer to your E Series DAQ device user manual for more details Refer to Chapter 2 Configuring and Setting Up the SC 2311 to determine how to configure your SC 2311 to obtain power from either an E Series DAQ device or external power supply Table C 1 5B Series Current Requirements
100. ture coefficient The output common must be kept within 3 V of power common Specifications subject to change without notice Copyright 1995 2000 Analog Devices Inc All rights reserved National Instruments Corporation B 33 SC 2311 User Manual Appendix B 5B Series Module Data Sheets 5B40 5B44 Isolated Wide Bandwidth Millivolt and Voltage Input Functional Description The 5B40 and 5B41 are wide bandwidth single channel signal conditioning modules that amplify protect filter and isolate analog input voltages Both modules provide a 10 KHz bandwidth which ideally suits them to measuring signals that vary rapidly with time Examples include pressure inside a plastic injection molding machine strain on an automobile chassis during a crash test and vibrations on a machine bearing shortly before failure The 5B40 and 5B41 protect the computer side from damage due to field side overvoltage faults All models withstand 240 V rms at their input terminals without damage thereby shielding computer side circuitry from field side overvoltage conditions In addition 5B40 and 5B41 Series modules are mix and match and hot swappable so can be inserted or removed from any socket in the same backplane without disrupting system power Inside 5B40 5B41 Modules A chopper stabilized input amplifier provides low drift and stable gain At the amplifier input a stable laser trimmed zero scale input voltage is subtracted from the inpu
101. ut module with 20 VDC loop B 40 to B 41 5B45 46 frequency input module B 44 to B 46 5B47 linearized thermocouple input module with cold junction compensation B 49 to B 50 SC 2311 shielded carrier A 1 to A 2 analog inputs A 1 digital I O A 1 electromagnetic compatibility A 2 environment A 2 physical A 1 safety A 2 SSR Series modules A 3 to A 4 input module characteristics table A 3 output module characteristics table A 4 National Instruments Corporation I 3 Index SSR Series modules input modules 4 1 to 4 3 SSR IAC 5 120 VAC 4 2 SSR IAC 5A 240 VAC 4 2 SSR IDC 5 3 32 VDC 4 3 output modules 4 3 to 4 6 SSR OAC 5 120 VAC 4 4 to 4 5 SSR OAC 5A 240 V AC 4 5 SSR ODC 5 3 60 DVC 4 5 to 4 6 overview 1 2 4 1 power requirements for SC 2311 shielded carrier with SSR series modules C 2 specifications A 3 to A 4 stack mount kit 2 10 to 2 11 switch settings for SC 2311 shielded carrier SW2 2 5 SW3 2 4 to 2 5 SWA 2 4 SWS5 2 4 system integration by National Instruments D 1 T technical support resources D 1 to D 2 W Web support from National Instruments D 1 Worldwide technical support D 2 SC 2311 User Manual
102. without notice Copyright 1995 2000 Analog Devices Inc All rights reserved SC 2311 User Manual B 14 ni com Appendix B 5B Series Module Data Sheets 5B35 Isolated Linearized 4 Wire RTD Input Functional Description The 5B35 is a single channel signal conditioning module that amplifies filters isolates and protects a wide variety of four wire RTDs The module provides a linearized highly accurate output of 0 to 5V wi wen THE OUTED CRE v0 PANAO RANT MNT ONT Accurate and Stable Performance The four wire configuration of the 5B35 supplies RTD excitation from a precision protected current source two RTD wires carry the excitation current and two wires serve as signal input leads that measure the voltage across the RTD Because no excitation current flows through the signal input leads the length or resistance of the leads creates little or no RTD measurement error A low drift chopper stabilized differential amplifier allows use of very low excitation current to minimize error due to RTD self heating The amplifiers low input offset drift of 0 01 C C and gain drift of 30 ppm C assure accuracy over the full operating temperature range ETC he Sc oss True Three Port Isolation The floating differential input circuit on the field side eliminates the need for any input grounding Signal and power isolation by transformer coupling uses a proprietary modulation technique for linear sta
103. xample programs system configurators tutorials technical news as well as a community of developers ready to share their own techniques Customer Education National Instruments provides a number of alternatives to satisfy your training needs from self paced tutorials videos and interactive CDs to instructor led hands on courses at locations around the world Visit the Customer Education section of ni com for online course schedules syllabi training centers and class registration System Integration If you have time constraints limited in house technical resources or other dilemmas you may prefer to employ consulting or system integration services You can rely on the expertise available through our worldwide network of Alliance Program members To find out more about our Alliance system integration solutions visit the System Integration section of ni com National Instruments Corporation D 1 SC 2311 User Manual Appendix D Technical Support Resources Worldwide Support National Instruments has offices located around the world to help address your support needs You can access our branch office Web sites from the Worldwide Offices section of ni com Branch office Web sites provide up to date contact information support phone numbers e mail addresses and current events If you have searched the technical support resources on our Web site and still cannot find the answers you need contact your local office

SC-2311 User Manual - National Instruments

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