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Introduction
Functions
General Information
The Combination Generator Control Module with EtherNet/IP® Device Level
Ring communication (CGCM-DLR unit) is a microprocessor-based control and
protection device. The CGCM-DLR unit is designed to integrate with a Logix
family programmable controller to provide generator control, protection, and
synchronization functions. Programmability of system parameters, regulation
settings, and protective functions enable the CGCM-DLR unit to be used in a
wide range of applications.
The following sections outline the functions of the unit.
Generator Regulation and Control Functions
This list contains the generator regulation and control functions:
• Four excitation control modes
• Automatic voltage regulation (AVR)
• Manual or field current regulation (FCR)
• Power factor (PF)
• Reactive power (VAR)
• Soft start voltage buildup with an adjustable ramp in AVR and FCR
control modes
• Over-excitation (OEL) and under-excitation (UEL) limiting in AVR,
VAR, and PF control modes
• Under-frequency compensation (Volts/Hertz)
• Line drop compensation
• Auto-tracking between operating modes and between redundant
CGCM-DLR units
• Automatic transfer to a back-up CGCM-DLR unit in redundant systems
• Generator paralleling with reactive droop compensation or cross-current
(reactive differential) compensation
• Generator paralleling with real power load sharing
• Synchronizing for one or two circuit breakers
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
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