190 Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
Chapter 8 Use I/O Modules with CompactLogix 5370 L2 Controllers
Figure 31 shows an example of devices with single-ended connections wired to
the embedded analog inputs on a 1769-L27ERM-QBFC1B controller when it is
operating with voltage or current input types.
Figure 31 - 1769-L27ERM-QBFC1B Controller Single-ended Connections Wiring Diagrams
Power
Supply
EarthEarth
Voltage Transmitter
Voltage Input Type
Single-ended Voltage
Connections
Current Input Type
Single-ended Current
Connections
Signal
Ground
Current Transmitter
Power
Supply
Signal
IMPORTANT: For single-ended
connections, remember the
following:
• For both input types, we
recommend that you use
Belden #8761or equivalent
cable.
• The mV ranges with the
Voltage input type do not
support single-ended
encoder wiring.
• All commons are electrically
tied together in the
controller.
• If multiple power supplies
are used, the commons
must have the same
reference.
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