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CGCM-DLR Unit Operation
Chapter 3
Real-power Load Sharing
Real-power load sharing terminals are provided to allow two or more
CGCM-DLR units or other compatible generator control devices (such as the
Line Synchronization Module™, catalog number 1402-LSM) to load the
generators under their control such that the same per unit output is developed by
each generator.
Load sharing terminals are labeled LS(+) and LS(-).
Discrete Outputs
The CGCM-DLR unit provides two discrete open collector outputs, the fault
output and the redundancy relay output. These outputs are sinking type outputs
internally connected to the control power BAT(-) supply. They are intended to
drive a user-supplied relay that is connected between the control power BAT(+)
supply and the applicable discrete output terminal.
Fault Output
The fault output can be used to annunciate a fault via a user-supplied relay. You
can choose, from a predetermined list, the conditions for this output. The fault
output is labeled FLT.
The fault enable output tags in the Output table determine which faults activate
the fault relay output.
Redundancy Relay Output
The redundancy relay output is used to transfer excitation of the generator from
the primary CGCM-DLR unit to the redundant CGCM-DLR unit in dual unit
systems. The redundancy relay output is labeled RD RLY.
Communication
The CGCM-DLR unit provides three communication ports along with software
inputs and outputs.
Com 0 Factory Test Port
Not for customer use. This port is used to calibrate the CGCM-DLR unit during
factory testing.
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
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