IS200DRLYH1BBB

The GE IS200DRLYH1B is a relay output terminal board engineered for use in GE Speedtronic Mark VI turbine control and industrial automation systems. This module is designed to route discrete control signals from high-level logic processors to external field devices such as actuators, alarms, and interlocks, using robust dry-contact relays. Its industrial-rated construction and straightforward interface make it suitable for power generation, process control, and other mission-critical environments where reliable signal switching is essential.

Technical Specifications

Parameter	Specification
Model	IS200DRLYH1B
Module Type	Relay Output Terminal Board
System Compatibility	GE Mark VI Speedtronic Control Systems
Relay Outputs	12 isolated Form-C dry contacts (SPDT)
Coil Supply Voltage	Typically 24 V DC from rack logic board
Contact Ratings	Up to 2 A per contact (varies by load type)
Operating Temperature	−30 °C to +65 °C (approx.)
Mounting	Panel/rack mount via corner screw holes
Dimensions (H × W × D)	216 mm × 206 mm × ~30 mm (approx.)
Weight	0.80 kg (approx.)

This board connects to the Mark VI backplane or control rack wiring harness and provides field-facing connections via high-quality terminal blocks.

Recommended Related Modules

To build or service a complete Mark VI control rack, the IS200DRLYH1B is typically used alongside:

IS200ERAXH1A – Main PLC/CPU Control Module
IS200PSCAH1A – Rack Power Supply Module
IS200EMIOH1A – I/O Interface Module
IS200TRPGH1B – Turbine Protection Module
IS200CAAIH1A – Analog Input Conditioning Board

These modules work together to deliver complete logic control, signal acquisition, and field-device actuation in industrial control systems.

Popular GE Mark VI Series Modules

IS200TRLYH1B – Terminal relay cards with 12 Form C relays for general use
IS200DTCIH1ABB – Digital input modules
IS200VAICH1CBA – Analog input modules
IS200TSVOH1B – Servo valve termination board
IS200BICIH1A – Bridge interface controller board

These related modules are often found together in gas/steam turbine control cabinets to handle diverse I/O and control tasks.

Applications

The IS200DRLYH1B excels in applications such as:

Power plant turbine control systems
Industrial process automation panels
Remote actuation of field devices (valves, motors, alarms)
Interlock and safety control logic implementation
Distributed control systems interfacing with PLC logic

It provides a dependable interface between logical control outputs and field apparatus, facilitating proper actuation and sequencing in complex automation solutions.

Advantages

Reliable Dry Contact Switching
Form-C dry contacts deliver true mechanical separation for precise relay outputs.

Industrial-Ready Design
Designed to operate in typical control cabinet environments, with an extended temperature range.

Straightforward Integration
Panel or rack mounting with barrier-style terminal blocks simplifies installation and field wiring.

Clear Status Feedback
LED indicators (in many configurations) let technicians quickly verify relay activity and coil supply.

UL & Hazardous Location Compatibility
Suitable for use in UL Class I Division 2 or similar hazard locations when installed properly.

Technical FAQs

What does the IS200DRLYH1B module do?
It provides 12 isolated relay outputs to switch external field devices based on controller logic.
What voltage is typically used for relay coils?
24 V DC is commonly supplied from the control rack’s logic power.
How many relay outputs are on the board?
The board typically includes 12 Form-C dry contacts.
What environments can it operate in?
Rated roughly from −30 °C to +65 °C for standard industrial applications.
Where is it mounted?
Mounted via four corner holes on a panel or inside a control rack.
Is it suitable for hazardous locations?
Yes — the “H1B” version supports UL Class I Division 2 classified locations.
Can it switch AC loads?
Yes — contacts can switch AC loads, but ratings depend on the specific contact specifications.
Does it include LED indicators?
Models often include coil status LED indicators.
How are outputs wired?
Field outputs connect via high-density terminal blocks on the board.
Which systems is it used with?
It’s designed for GE Speedtronic Mark VI turbine and process control systems.