Instruction/ maintenance manual of the product SCC-CO20 National Instruments
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USER GUIDE SCC-CO20 Isolated Current Output Module The SCC-CO20 is an isolated curren t output module that output s up to 20 mA. The output current lev el is proportional to the voltage applied to the module by an analog output channel of an E/M Series D A Q device.
SCC-CO20 Isolated Cu rrent Output Module User Guide 2 ni.com italic Italic text denotes variables, emphasis , a cross-reference, or an introduction to a key concept. Italic te xt also deno tes text that is a placeholder for a word or v alue that you must supply .
© National Instruments Corpor ation 3 SCC-CO20 Isolated Curren t Output Module User Guide ❑ T o ols – 1/8 in. flathead scre wdri ver – Numbers 1 and 2 Phillips screwdriv er s – W ire insu lation stripper Note Software scaling of measurements is not supported on the Macintosh operating system.
SCC-CO20 Isolated Cu rrent Output Module User Guide 4 ni.com Figure 1. SCC-CO20 Sign al Connections to E/M Series DAQ Device Using the Isolated Loop Supply of the SCC-CO20 You can connect the SCC-CO20 to a load using either the isolated internal loop supply or an external supply.
© National Instruments Corpor ation 5 SCC-CO20 Isolated Curren t Output Module User Guide Note If your load is g rounded and you are usin g the internal supply , connect the load ground to the current sink terminal at pin 2 on th e SCC-CO20.
SCC-CO20 Isolated Cu rrent Output Module User Guide 6 ni.com Figure 3. Connecting T wo SCC-CO20 Module s to a Higher-R esistance Load SCC-CO20 1 2 + – 15 V iso 3 SCC-CO20 1 2 + – 15 V iso 3 Load S.
© National Instruments Corpor ation 7 SCC-CO20 Isolated Curren t Output Module User Guide Using an External Loop Supply In order for the current sink to oper ate properly with an external loop supply, the voltage must be within the range of 3 to 42 V.
SCC-CO20 Isolated Cu rrent Output Module User Guide 8 ni.com Figur e 5. Connecting the SCC-CO20 to a Grounded External Loop Supply and a Grounded Load For information about how to conf igu re the SCC-CO20 modul e using NI-D A Qmx, refer to the SCC Quick Start Guide .
© National Instruments Corpor ation 9 SCC-CO20 Isolated Curren t Output Module User Guide Note Normally you would adjust to 0 μ A in order to calibrate the of fset, but because the SCC-CO20 cannot source current, it is impossi ble to know when you ha ve adjusted past 0 μ A.
SCC-CO20 Isolated Curr ent Output Module User Guide 10 ni.com Specifications These ratings are typical at 25 ° C unless otherw ise stated. Electrical Number of output channels ................. ....1 Output referencing .............. ................
© National Instruments Corporat ion 11 SCC-CO20 Isolated Curren t Output Module User Guide Physical Figure 6. SCC-CO20 Dimensions Weight .................... .............. ........... ....... 28 g (1.0 oz) I/O connectors ...................... .....
SCC-CO20 Isolated Curr ent Output Module User Guide 12 ni.com Environmental Operating temperature .. .............. ............0 to 50 °C Storage temperature .............. .............. ....–20 to 70 °C Humidity .............. ............ ....
© National Instruments Corporat ion 13 SCC-CO20 Isolated Curren t Output Module User Guide Online Product Certification Refer to the product Declaration of Conformity (DoC) fo r additional regulatory compliance information. To obtain pro duct certifications an d the DoC for this product, visit ni.
SCC-CO20 Isolated Curr ent Output Module User Guide 14 ni.com SCC-CO20 Module Pin Assignments Figure 7 shows the I/O connector pin s on the bottom of the modul e. Figure 7. SCC-CO20 Bottom View T able 1 lists the signal connect ion corresponding to each pin.
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If you already are a holder of National Instruments SCC-CO20, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime National Instruments SCC-CO20.
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