GE DS200RTBAG3AHC Relay Terminal Board

I. Basic Information
Brand: GE Fanuc (Original Equipment from the United States)
Model: DS200RTBAG3AHC
System: GE Speedtronic Mark V Generator / Turbine Control System, EX2000 Generator Excitation System
Product Type: Relay Signal Terminal Adapter Board
Installation Method: Rail-mounted installation on the control cabinet frame
PCB Process: With three-proof coating, resistant to moisture, dust, and electromagnetic interference

Core Functions
Switching Quantity Signal Relay Isolation Output
Built-in 10 electromagnetic relays, isolating and amplifying the weak electrical control signals of the system, outputting passive switch contacts, driving on-site electromagnetic valves, alarm indicator lights, trip circuits, auxiliary contactors, etc., achieving strong and weak electrical isolation, protecting the main control card from on-site high voltage interference.
52 Terminal Concentrated Wiring Transfer
Integrated 52-bit green plug-in type wiring terminals, uniformly extracting internal signals from the backplane to the on-site cables outside the cabinet, facilitating wiring, maintenance, signal measurement, and simplifying the layout of the control cabinet circuits.
Local / Remote Two Driving Modes
The relay can be directly driven by the internal leading relay of the system, or remotely triggered through external terminals, suitable for various control logic scenarios such as unit interlock protection, alarms, valve opening and closing, fault tripping, etc.
Built-in Status Indicators + Surge Protection
Each relay is equipped with an action indicator light, facilitating on-site intuitive judgment of circuit connection and disconnection; the board integrates a reverse current diode and a resistive-capacitive absorption circuit to suppress the reverse electromotive force of the coil, avoiding frequent coil attraction and burning of the board card chips.

Hardware Configuration Details
Relay Specifications (Total 10 relays: K20 – K29)
K20 – K26 (7 relays): 115VAC coil, DPDT double-pole double-throw, rated contact current 10A
K27 – K29 (3 relays): 115VAC coil, 4PDT four-pole four-throw, rated contact current 1A
Power Supply Interface: CPH (positive power supply terminal), CPN (negative power supply terminal) two plug-in power supply terminals
Wiring Terminals: A total of 52 plug-in wiring terminals, all leading out the normally open, normally closed, and common contacts of the relays
Size and Weight: Approximately 232mm × 123mm, net weight 0.5kg

Key Electrical Parameters Table
Parameter item Technical specification
Relay coil voltage 115V AC 50/60Hz
Contact insulation withstand voltage 1500Vrms between coil and contact
Maximum single-channel contact current 10A (for high-power circuits) / 1A (for signal circuits)
Operating environment temperature 0℃ ~ +60℃
Storage temperature -40℃ ~ +85℃
Protection level IP20 (installed in control cabinet)
Overall power consumption Approximately 2.6W

Typical application scenarios
Power plants, gas-fired power plants, GE Mark V steam/turbine / gas turbine ETS trip protection circuit, alarm signal output;
Generator sets EX2000 excitation system interlock, fan oil pump, cooling system start/stop control;
Steel mills, chemical plants large compression units, turbine units remote switch quantity interlock control;
Old GE speed control systems, excitation systems spare parts replacement, line renovation and upgrade.

Compatible alternative models
Hardware pins, relay configuration, terminal definitions are completely consistent and can be directly replaced:
DS200RTBAG3A, DS200RTBAG3AHB