The GE IS200DRLYH1B is a Relay Output Terminal Board developed by General Electric (GE) for use in the Mark VI and Mark VIe turbine control systems. As part of the discrete output interface in a distributed control system (DCS), this board is designed to handle relay-based signal switching for a variety of industrial control processes.

Primarily responsible for providing isolated, high-reliability relay outputs, the IS200DRLYH1B is crucial in commanding actuators, interlocks, alarms, and shutdown devices. It functions by receiving logic-level control signals from the controller and converting them into relay actuations, which are then used to trigger external equipment. The board supports both normally open (NO) and normally closed (NC) relay contact configurations.

Its rugged design, electrical isolation, and modularity make it ideal for high-demand, mission-critical environments where operational integrity and system safety are paramount.

Product Specifications

Product Applications

• Power Plants (Turbine Control)

  Switches safety relays, trip mechanisms, and alarms during turbine operation and shutdown.

• Oil & Gas Processing

  Controls pumps, valves, and compressor interlocks in hazardous and non-hazardous areas.

• Industrial Automation Systems

  Provides discrete relay output for machines, motors, and factory equipment.

• Chemical & Petrochemical Facilities

  Executes safety interlocks and fail-safe relays for high-pressure and hazardous processes.

• Substation & Grid Automation

  Triggers alarms, isolators, and breakers during fault detection or load shedding.

• Marine & Offshore Applications

  Supports shipboard power systems and emergency control relays in confined systems.

Product Advantages

• High Isolation & Reliability

  Each relay is electrically isolated, reducing cross-talk and enhancing system integrity.

• Flexible Output Configuration

  Supports both Form C (NO/NC) relay outputs to accommodate a range of system designs.

• Rugged Design for Harsh Environments

  Built to operate in high-vibration, temperature-variable, and electrically noisy environments.

• Plug-and-Play Architecture

  Easily integrated into Mark VI/VIe systems with backplane connection and terminal access.

• Ideal for Critical Safety Functions

  Frequently used in trip logic, emergency stops, and alarm signaling.

• Modular Maintenance

  Designed for quick swap and diagnostics, minimizing system downtime.

Frequently Asked Questions (FAQ)

1. What is the primary function of the IS200DRLYH1B?

   It provides 12 relay outputs that convert logic-level control signals into contact closures for actuators, alarms, or interlocks.

2. Can the relay outputs be used for AC and DC loads?

   Yes, they support both AC (up to 250V) and DC (up to 125V) resistive loads.

3. Is there electrical isolation between channels?

   Yes, each relay is optically and physically isolated to ensure signal integrity.

4. How is this board mounted?

   It is backplane-mounted and connects via plug-in terminal blocks.

5. Does it support fail-safe operation?

   Yes, it is commonly used in trip logic and failsafe designs where output state is critical.

6. What is the life expectancy of the relays?

   The mechanical life is typically over 10 million operations under rated conditions.

7. Can it operate in outdoor enclosures?

   It should be installed in protected industrial enclosures with suitable environmental ratings.

8. Does it require a specific cooling method?

   No, but proper ventilation is recommended; operates with passive convection cooling.

9. Is the IS200DRLYH1B hot-swappable?

   No. Replacement should be performed during scheduled maintenance or system shutdown.

10. What tools are required for installation?

    Standard DIN rail hardware (if used in housing), screwdriver for terminal connection, and system software for signal configuration.