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Product Brief Description
The GE 369B1874G0014 Relay Expansion Terminal Board, a potential variant within the “8480” series, is a component designed to expand the digital output capabilities of an industrial control system. It provides an interface for additional relays, enabling a control system to operate a variety of external, high-power devices such as motors, solenoids, and contactors. This board is a crucial part of the system as it provides electrical isolation, protecting sensitive low-voltage control circuitry from high-voltage circuits.
Detailed Product Description
As an expansion terminal board, this component provides the physical wiring points for a set of relays. It functions as an interposing relay, converting a low-power control signal from the I/O pack into a signal that switches a higher-power relay. This relay, in turn, controls the external device. This is a fundamental design principle for safety and reliability in industrial environments, ensuring that the main control system is electrically isolated from the field devices. While the exact number of channels or specific technical details for this particular part number are not available, it is designed for integration into GE’s turbine and industrial control platforms, such as the Mark VIe.
Key Features and Specifications
- Part Number: 369B1874G0014
- Module Type: Relay Expansion Terminal Board
- Primary Function: Expands digital output and provides electrical isolation.
- Role: Acts as an interposing relay between the control system and external high-power loads.
- Compatibility: Assumed to be compatible with industrial control systems like the GE Mark VIe.
- Benefits: Enhances system protection, simplifies wiring, and allows a low-voltage controller to manage high-voltage equipment.
Functional Role in a System
In a typical control system, a digital output module sends a low-voltage signal to the 369B1874G0014. This signal energizes a relay on the board, which then closes a contact in a separate, high-voltage circuit. This action, for instance, could turn on a motor or a solenoid. The board’s design ensures a clear separation between the two circuits, which is essential for both operational reliability and personnel safety.
Common Applications
This type of relay expansion terminal board is critical in applications where a large number of high-power devices need to be controlled by a central system, including:
- Motor Control Centers: To switch motor contactors on and off.
- Process Automation: To activate a variety of field-actuated devices, such as valves.
- Safety Systems: To manage emergency shutdown sequences by controlling high-power circuits.
- Alarm and Annunciation: To activate high-power sirens, lights, and other signaling devices.
