GE IS20OSNRLH2A（IS230SNRLH2A) Discrete Output Relay Module

The GE IS200SNRLH2A, also cataloged as the IS230SNRLH2A Discrete Output Relay Module, operates as a dedicated hardware component for high-power field device actuation within GE Mark VIe and Mark VIeS turbine control architectures.

Hardware Specifications

Industrial Control and PLC Characteristics

• Backplane bus communication velocity: The module maintains deterministic communication with the Mark VIe processor, ensuring that relay state transitions are synchronized with the controller's scan cycle.
• Profinet / EtherNet/IP deterministic networks: The module integrates into the Mark VIe Ethernet fabric, allowing for high-speed command execution and relay state monitoring across the turbine control network.
• I/O density scaling: The 12-relay configuration provides a compact density for local actuation of solenoids and contactors, suitable for non-redundant (simplex) application requirements.
• Firmware flash compatibility: The module supports internal diagnostics and communication management, ensuring consistency with the overall turbine control platform's firmware requirements.

Frequently Asked Questions

Q: Does the IS200SNRLH2A support hot-swapping?

A: The ability to hot-swap depends on the specific Mark VIe control rack configuration. Ensure the I/O rack backplane and firmware support active insertion; otherwise, the rack must be de-energized to prevent electrical damage to the D-shell and backplane connectors.

Q: How is the relay output rating determined?

A: The relay capacity is derated based on the operating voltage; specifically, it supports 5 A at 24 V DC, 1.2 A at 48 V DC, and 0.6 A at 125 V DC. Verify the field device load does not exceed these values to avoid contact welding or premature relay failure.

Field Installation Guidelines

• Mounting: Secure the module onto a standard DIN rail. Ensure the terminal Euro-style box terminals are fully accessible for wiring and that the module is positioned to allow adequate airflow for thermal management.
• Grounding: Connect the chassis ground to the cabinet’s instrument earth bus. A low-impedance connection is mandatory to provide a return path for relay transients and to protect the internal surface-mount electronics from EMI.
• Wiring: Terminate field devices to the Euro-style terminals using appropriate wire ferrules. Maintain strict separation between high-current relay output wiring and low-voltage control signal cables (at least 150 mm) to prevent inductive noise injection into the backplane.