Allen-Bradley 1407-CGCM Combination Generator Control Module

Brand Allen-Bradley

Model Allen-Bradley 1407-CGCM

Product Overview

The Allen-Bradley 1407-CGCM is a highly sophisticated Combination Generator Control Module (CGCM) designed to provide comprehensive control, protection, and metering for industrial generator systems. Part of the renowned Allen-Bradley portfolio by Rockwell Automation, the 1407-CGCM integrates four critical functions—excitation control, generator protection, synchronizing, and full-featured metering—into a single, compact panel-mounted unit. This consolidation eliminates the need for separate voltage regulators, synchronizers, and protection relays, significantly reducing wiring complexity and cabinet space.

At its core, the Allen-Bradley 1407-CGCM is engineered to manage the delicate process of generator excitation and load sharing. It supports multiple excitation control modes, including Automatic Voltage Regulation (AVR), Manual or Field Current Regulation (FCR), Power Factor (PF) control, and Reactive Power (VAR) control. The module’s advanced microprocessor executes complex algorithms for soft-start voltage build-up, V/Hz limiting, and cross-current compensation, ensuring stable and efficient generator operation under varying load conditions. With its native ControlNet communication capabilities, the 1407-CGCM seamlessly integrates with ControlLogix controllers, providing real-time data and diagnostics to the plant-wide automation system. This makes it an ideal solution for applications demanding high reliability, precision, and seamless integration within the Rockwell Automation ecosystem.

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	1407-CGCM
Manufacturer	Allen-Bradley (Rockwell Automation)
Product Type	Combination Generator Control Module (CGCM)
Control Power Supply	18–32V DC (24V DC nominal)
Excitation Output	Pulse-width-modulated, 15A continuous, 30A for 10s forcing
Voltage Sensing	57–208V AC (Single or 3-Phase, True RMS)
Current Sensing (CT)	1A or 5A (3-Phase + Cross-Current)
Frequency Range	20–90 Hz (Generator), 50/60 Hz (PMG)
Communication	Redundant ControlNet, RS-232 (Redundancy/Config)
Control Modes	AVR, FCR, PF, VAR
Protection Functions	27, 59, 81O/U, 32R, 40, 40Q, 51, 47, V/Hz
Operating Temperature	-20°C to +70°C
Mounting	Vertical Chassis Mount with Heat Sink
Dimensions (WxHxD)	247.7 mm x 355.6 mm x 209.6 mm

Main Features and Advantages

Integrated Functionality: The Allen-Bradley 1407-CGCM stands out by combining excitation control, generator protection, synchronizing, and metering into one module. This all-in-one design reduces the need for multiple discrete components, simplifying system architecture and minimizing potential points of failure. The integrated approach not only saves valuable panel space but also streamlines installation and commissioning processes.

Advanced Excitation Control: With support for AVR, FCR, PF, and VAR control modes, the 1407-CGCM offers unparalleled flexibility in managing generator excitation. Its ability to perform soft-start voltage build-up and under-frequency compensation (Volts/Hertz) ensures smooth and stable generator operation, protecting both the generator and connected loads from damaging voltage fluctuations.

Seamless ControlLogix Integration: The Allen-Bradley 1407-CGCM is designed for native integration with ControlLogix platforms via ControlNet. This allows for the seamless exchange of real-time metering data, status flags, and control commands, enabling advanced power management strategies and centralized monitoring through FactoryTalk View or other HMI/SCADA systems. The module’s network-ready architecture eliminates the need for complex protocol converters.

Robust Protection and Redundancy: The module incorporates a comprehensive suite of generator protection functions, including over/under voltage, over/under frequency, reverse power, and loss of excitation. Furthermore, the 1407-CGCM supports redundant configurations, where a standby module can automatically track and take over from a failed primary unit, ensuring maximum uptime for critical power generation assets.