Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
47
CGCM-DLR Unit Operation
Chapter
3
Operational Functions
The following sections describe the operational functions of the CGCM-DLR
unit. The functions include the following:
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Excitation Control Modes
The CGCM-DLR unit controls the DC excitation current of the generator
exciter that is based on a number of factors, including the following:
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The selected control mode
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The configuration of the CGCM-DLR unit including gains
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Measured generator voltage and current
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The applicable setpoint or setpoints
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The value of the Auxiliary Input
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Various limiting functions
The CGCM-DLR unit offers several modes of regulation that are selected and
activated by using the software interface to the host Logix programmable
controller. An active EtherNet/IP Data connection must exist with the host
Logix controller for any regulation mode to be active.
The CGCM-DLR unit automatically shuts down excitation if one of these faults
occurs:
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Overexcitation voltage
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Reverse VAR
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Logix controller fault