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Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
Chapter 7
Use I/O Modules with CompactLogix 5370 L1 Controllers
and
shows examples of how to power 2-wire and 3-wire input
devices in your application with connections to a V terminal.
IMPORTANT
, use the following guidelines:
•
With this wiring configuration, the input devices lose power if the
removable connector does not power the embedded I/O modules.
•
With this wiring configuration, the controller does not help protect field-
side devices from overcurrent draw conditions.
•
Design your application so that power consumption does not exceed the
power supply ratings.
•
The following figure is a wiring example that complies with the National
Electrical Code (NEC) standard for isolation between system and field
power.
•
The FP+ terminal on the removable connector is the Voltage connection.
•
The FP- terminal on the removable connector is the Common connection.
•
The MCR must be closed for the removable connector to provide power to
the embedded I/O module.
•
Install a user-replaceable fuse with overcurrent protection of 4…6 A in
line between the incoming power and the FP+ terminal.
For series A L1 controllers
only
, you must use a separate, dedicated Class 2
power supply for the CompactLogix 5370 L1 controller and a separate power
supply for the embedded I/O module (see
).
