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The GE part number IS200DRLYH1B is a Din Rail Terminal Board with Relay Outputs. It is a component of GE’s Mark VI and Mark VIe Speedtronic turbine control systems. Its primary function is to serve as an interface for the control system’s digital outputs, using relays to switch external circuits on or off. 🔌
Function and Key Features
A relay output board is crucial for interfacing a low-power digital control system with higher-power field devices like motors, solenoids, and alarms.
- Relay Outputs: The board contains a series of relays, which are electromechanical switches. The control system sends a low-voltage signal to the board, which activates a relay. The relay then closes its contacts, switching a separate, higher-power circuit. This provides electrical isolation between the sensitive control electronics and the field devices, protecting the control system from voltage spikes and power surges.
- Din Rail Mounting: The “Din Rail” designation means the board is designed to be mounted on a standard Din rail, a metal rail used for mounting industrial control equipment inside a cabinet. This simplifies installation and provides a clean, organized layout.
- Terminal Board: The board provides screw terminals or other connection points for field wiring, making it easy to connect the output signals to external devices.
- System Integration: The DRLY board connects to a main control board in the Mark VI or Mark VIe system, receiving commands to activate its relays.
- Robust Design: Like all GE industrial control components, it’s built to withstand the harsh conditions of a power plant.
Applications
The IS200DRLYH1B is used in power generation facilities that operate GE’s Mark VI and Mark VIe turbine control systems. It is an essential component for:
- Motor and Solenoid Control: It’s commonly used to activate solenoids that control fuel and steam valves or to start and stop auxiliary motors.
- Alarm and Annunciation: It can be used to activate alarms, lights, or other annunciator systems to signal an event or a fault condition.
