Description
Product Overview
The GE DS200TCRAG2A (TCRA board, common suffix variant DS200TCRAG2ABC) is a discrete relay output printed circuit board for the GE Speedtronic Mark V turbine control system, mounted within Q11 and Q51 digital I/O cores. It receives digital logic commands from TCDA control boards and drives onboard pluggable Mag-Trol relays to actuate external field hardware, including trip relays, solenoid valves, ignition transformers and auxiliary motor control circuits. The PCB supports up to 30 removable Mag-Trol SPDT relays, with hardware jumper configurations paired to DTBC / DTBD terminal boards. It is designed for TMR triple redundant Mark V control architecture for gas turbines, steam turbines and combined-cycle power plants. This legacy hardware has reached end-of-manufacture and is stocked as critical maintenance spare for existing Mark V turbine control cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | DS200TCRAG2A (suffix variant DS200TCRAG2ABC) |
| Manufacturer | GE General Electric |
| Product Category | TCRA Relay Output Board |
| Platform | Speedtronic Mark V Turbine Control System |
| Installation Location | Q11, Q51 digital I/O cores |
| Onboard Relays | Up to 30 plug-in Mag-Trol relays, 0.5A coil rating |
| Relay Contact Type | SPDT Form C contacts |
| Relay Coil Supply | 24VDC ±10% supplied from rack backplane |
| Connectors | 4 × 34-pin headers (JOR, JOS, JOT, JO); 4 ×12-pin ribbon connectors (JS3, JS4, JS5, JS6) |
| Status Indicators | Onboard LEDs for individual channel status |
| Configuration | Hardware jumpers, matched with DTBC / DTBD terminal boards |
| Mounting | Plug-in PCB inside Mark V digital I/O rack |
| Diagnostics | Relay drive fault detection and channel health monitoring |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~95% non-condensing |
| Approximate Weight | 0.85 kg |
Compliance & Certifications
- CE mark compliant with EMC and Low Voltage Directive
- Designed to GE Speedtronic turbine control specifications
- RoHS compliant
- Factory power-on test, relay switching test and I/O communication validation prior to shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Remain sealed inside original anti-static packaging before installation
- Protect from mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required when unpacking and handling PCB assemblies
Installation Instructions
- Execute lock-out/tag-out and fully de-energize Mark V I/O core rack before board replacement
- Wear ESD protective gear to prevent electrostatic damage to circuit components
- Open Mark V Q11/Q51 rack and discharge residual capacitance
- Label and disconnect all 34-pin and 12-pin ribbon cables from old DS200TCRAG2A
- Insert replacement board into rack slot, secure mounting hardware
- Verify relay population and jumper settings match original site configuration
- Reconnect ribbon cables and mating DTBC/DTBD terminal boards
- Restore rack power, perform individual relay channel actuation test and validate TMR core voting; commissioning must be completed by certified GE turbine control technicians
FAQ
Q: What control system uses DS200TCRAG2A? A: It is the TCRA relay output board for GE Speedtronic Mark V turbine control system, installed in Q11 and Q51 digital I/O cores.
Q: What is the core function of DS200TCRAG2A? A: It converts digital control commands from TCDA boards into relay switching outputs for solenoids, trip relays and auxiliary turbine field equipment.
Q: Can individual relays be replaced? A: Yes, the Mag-Trol relays are pluggable and can be replaced separately without changing the whole PCB.
Q: Is suffix revision matching required? A: Yes, suffix variants differ in relay population and PCB coating. Revision matching is mandatory for TMR redundant I/O racks.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested boards operated under rated normal operating service conditions.
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