Description
GE IS200STCIH2A Simplex Thermocouple Terminal Board is a specialized input termination module engineered specifically for the General Electric Mark VI and Mark VIe gas and steam turbine control systems. Designed to terminate and cold-junction compensate thermocouple signals from critical turbine areas, this board ensures high-precision temperature data acquisition across power generation and industrial automation architectures.
Product Specifications (Datasheet)
- Brand: GE (General Electric)
- Model: IS200STCIH2A (Compatible with variant revisions)
- Series: Mark VI / Mark VIe Turbine Control
- Product Name: Simplex Thermocouple Terminal Board (STCI)
- Place of Origin: United States
- Lifecycle Status: Active / Standard Industrial Supply
- Dimensions: Standard Mark VIe terminal board enclosure form factor
- Weight: Approx. 2.1 lbs (0.95 kg)
- Country of Origin: USA
- Power Consumption: Passive termination board (powered via paired I/O pack electronics)
Operating Guidelines and Usage Methods
Proper integration and handling of the thermocouple terminal board require strict adherence to instrumentation wiring and cold-junction integrity standards.
- ESD Precautions: Always wear a certified grounded electrostatic discharge (ESD) wrist strap when handling associated electronic I/O packs to protect sensitive microcircuits from static damage.
- Thermocouple Wiring: Ensure all thermocouple extension wires match the correct alloy metal type and polarity when terminating to the screw blocks, maintaining precise cold-junction compensation.
- Shield Grounding: Terminate overall cable shields securely to the designated chassis grounding bars to prevent electrical noise and electromagnetic interference (EMI).
Power-On and Power-Off Sequence
Adhering to correct energization protocols prevents signal transients and protects analog measurement circuitry within the Mark VI/VIe architecture.
- Power-On Sequence:
- Confirm that all thermocouple field wiring and backplane connectors are correctly and securely terminated to the IS200STCIH2A board.
- Plug the compatible Mark VIe thermocouple I/O pack firmly into the board interface and secure the locking mechanisms.
- Switch on the primary cabinet power distribution feeds and check operator workstation software to confirm normal module communication and stable temperature readings.
- Power-Off Sequence:
- Safely take the affected temperature monitoring loops offline via the operator workstation software.
- Power down the system rack distribution feeds if complete electrical isolation is required prior to maintenance.
- Allow circuits to de-energize before unseating the plug-in I/O pack from the terminal board.
Product Instructions
The terminal board serves as the permanent mechanical and electrical termination point for field thermocouples, routing millivolt signals to the plugged I/O pack for processing. Perform routine inspections of terminal screw torques and cold-junction sensor positioning during scheduled maintenance windows to prevent signal drift.
Frequently Asked Questions (Q&A)
- Q: What system is the IS200STCIH2A board designed for?
- A: It is utilized as a core thermocouple input termination module within the GE Mark VI and Mark VIe distributed control architecture.
- Q: Can the plugged I/O pack be replaced without disconnecting field wiring?
- A: Yes, the modular design allows the electronic I/O pack to be removed or replaced without disturbing the field thermocouple wires attached to the terminal board blocks.
- Q: What should I check first if a temperature channel reads erratically?
- A: Verify thermocouple wire polarity and terminal tightness, check shield grounding, and ensure the paired I/O pack is securely seated.
Recommended Alternative Series and Models
- GE Mark VIe IS220PTCCH1A
- GE Mark VIe IS200VPROH1B
- GE Mark VI IS200VAICH1A
- GE Mark VI IS200TVIBH2B
- GE Mark V DS200TCQAG1AFC
- GE EX2100 IS200EPSMG1A
- GE Fanuc IC695ALG608
- GE Fanuc IC697ALG230
- GE Multilin 469
- GE Multilin 850
