Description
The General Electric IS200TRLYH1B is a high-density Relay Output Terminal Board (TRLY) designed for the Speedtronic Mark VI and Mark VIe control platforms. Operating as a critical terminal interface, this board features onboard electromechanical relays that switch high-voltage or heavy-current field devices, bridging low-level control signals from Mark VI/VIe I/O packs to external plant equipment such as solenoids, alarm horns, motor starters, and actuator controls.
📊 Technical Specifications
- Brand: General Electric (GE / GE Energy / GE Fanuc)
- Model / MPN: IS200TRLYH1B (TRLY Series Terminal Board, Revision B)
- Series: Speedtronic Mark VI / Mark VIe Control System Series
- Product Name: Relay Output Terminal Board
- Manufacturing Status: Mature / Active Industrial Control Spare Part
- Relay Output Channels: 24 Form C (SPDT) electromechanical relay outputs
- Terminal Blocks: Removable barrier-type screw terminal blocks for secure field wiring termination
- Compatible I/O Packs: Designed to interface directly with corresponding Mark VIe relay output I/O packs (such as the IS220PDIO or similar output packs)
- Mounting Type: DIN-rail or panel-mount chassis installation
🛠️ Operation Guidelines & Installation
Installation and wiring must be performed strictly by qualified industrial automation technicians or certified control system engineers. Ensure that all system control power, internal cabinet feeds, and external high-voltage field circuits are completely locked out and de-energized before handling the terminal board or modifying wiring to prevent severe electrical shock, arc flash, or electrostatic discharge (ESD) damage. Wear an anti-static grounding wrist strap, mount the board securely on its chassis standoffs or DIN-rail, and verify that field wire torques are properly secured.
🔌 Power-Up and Power-Down Sequence
Verify that all field wiring terminals, sensor/actuator loops, and ribbon cables or plug connectors linking the terminal board to the I/O pack are correctly seated and torqued prior to startup. Apply control power to the system to initialize output loops. Observe status LEDs on the paired I/O pack to confirm proper channel actuation. For maintenance or shutdown, isolate external field power sources first, then cut off control power feeds safely.
📝 Product Usage Instructions
The IS200TRLYH1B processes control commands from the Mark VI/VIe processor, energizing internal relays to route power to field loads. Configuration parameters, interlock logic, and voting schemas are managed through GE’s ToolboxST software environment. Maintain a clean, dry, and properly temperature-regulated control cabinet environment to protect relay contacts from environmental corrosion and dust accumulation.
❓ Common Questions (Q&A)
Q: What is the primary function of the IS200TRLYH1B board?
A: It provides 24 Form C electromechanical relay outputs to switch external high-voltage or heavy-current field devices based on control signals from the Mark VI/VIe system.
Q: Can revision suffixes like “1B” be interchanged with older “1A” revisions?
A: Later revision codes typically incorporate minor layout updates or component enhancements; always review your system documentation or drawing packages to verify exact pin-for-pin and electrical compatibility.
Q: Do terminal boards require software configuration?
A: No, passive terminal boards like the TRLY do not hold firmware or require software configuration; software logic and node addressing are handled by the I/O pack mounted to or paired with the board.
🚀 Recommended Related Models
- GE IS200TRLYH1A (Previous Revision TRLY Board)
- GE IS220PDIOH1A (Discrete Input/Output Pack)
- GE IS200TBCIH1C (Mark VIe Discrete Input Terminal Board)
- GE IS200AEPCH1ACC (Mark VIe Ethernet Processor Card)
- GE IS200JPDHG1AAA (Power Distribution Board)
- GE IS230SNIDH1A (Isolated Digital DIN-Rail Module)
- GE IS200STTCH2A (Thermocouple Terminal Board)
- GE IS200SRTDH1AAA (RTD Input Board)
- GE Mark VIe Core Terminal Board Assembly
- GE ToolboxST Diagnostic Communication Gateway


