Chapter 4
40
Connecting Current Loop Inputs
Note:
You cannot connect a current loop input using the BNC
connectors.
shows how to connect a current loop input (channel 0, in
this case) to your own screw terminal panel.
Figure 13: Connecting Current Inputs to a Screw Terminal Panel
Analog Input 0
Analog Input 0 Return
Analog Ground
4 to 20 mA
+V
CC
User-installed resistor
The user-installed resistor connects the high side of the
channel to the low side of the corresponding channel,
thereby acting as a shunt. For example, if you add a 250
Ω
resistor and then connect a 4 to 20 mA current loop input
to channel 0, the input range is converted to 1 to 5 V.
It is recommended that you use the Open Layers Control
Panel applet to enable 10 k
Ω
of termination resistance to
connect the low side of channel 0 to analog ground (a
physical resistor is not required). Refer to
for
more information.
Screw Terminal Panel
36
20
1
Summary of Contents for KUSB-3116
Page 10: ...Contents x...
Page 14: ...About this Manual xiv...
Page 15: ...1 1 Overview Hardware Features 2 Supported Software 4 Getting Started Procedure 5...
Page 20: ...Chapter 1 6...
Page 26: ...Chapter 2 12...
Page 64: ...Chapter 4 50...
Page 65: ...51 5 Verifying the Operation of a Module Overview 53 Running the Quick Data Acq Application 54...
Page 75: ...61 A Ground Power and Isolation Connections...
Page 78: ...Appendix A 64...
Page 82: ...Index 68...