GE IS200TRLYH1B Speedtronic Mark VI Relay Termination Output Board

The GE IS200TRLYH1B is a dedicated relay termination output circuit board developed for the Speedtronic Mark VI turbine control system. It serves as the signal interface between main control modules and on-site field equipment, converting internal logic commands into dry contact switching signals to drive valves, alarms and auxiliary actuators.

This PCB integrates multiple Form C electromagnetic relays, terminal blocks and surge suppression circuits. It supports simplex, dual and TMR redundant control modes, provides stable electrical isolation, and is widely used for gas turbine and steam turbine control cabinet maintenance and spare part replacement.

Main Specifications

• Brand: General Electric (GE Speedtronic)
• Model: IS200TRLYH1B
• Applicable System: Speedtronic Mark VI Turbine Control Platform
• Relay Type: Form C SPDT electromagnetic relays
• Contact Load: Support AC and DC load switching
• Surge Protection: Built-in MOV overvoltage suppression components
• Connection Interface: High-density D-Sub connectors and screw terminals
• Operating Temperature: 0°C ~ +60°C
• Installation: Standard cabinet internal mounting
• Support Control Mode: Simplex, Dual and TMR triple modular redundancy

Core Functions

• Receive digital control signals from Mark VI main control boards
• Drive internal relays to output dry contact switching signals externally
• Control field solenoid valves, alarm annunciators and auxiliary equipment
• Execute turbine safety shutdown and auxiliary sequence control logic
• Electrical isolation between internal control circuit and field load circuit
• Suppress voltage surge generated by inductive load switching
• Clear terminal layout for convenient field wiring and maintenance
• Realize reliable signal transmission in redundant control architecture
• Cooperate with other Mark VI boards to form complete turbine control system
• Support long-term continuous operation under power plant industrial conditions

Application Scenarios

• Power plant gas turbine and steam turbine control cabinets
• Combined cycle generator set Speedtronic Mark VI control system
• Oil & gas industry turbomachinery safety control equipment
• Petrochemical plant large rotating machinery monitoring system
• Industrial heavy-duty turbine auxiliary sequence control projects
• Overseas power station GE turbine control system renovation
• Turbine emergency shutdown and protection logic control cabinets
• Manufacturing plant large compressor control equipment
• Legacy Mark VI control system spare parts replacement
• Energy industry distributed turbine monitoring and control solutions