The GE IS200TBCIH1C, also cataloged as the IS200TBCIH1C terminal board, operates as a dedicated dry‑contact acquisition interface for 24 discrete voltage inputs within Mark VI turbine control systems.
Hardware Specifications
Parameter
Specification
Model
IS200TBCIH1C
Brand
GE
Origin
USA
Weight
Not specified
Dimensions
Not specified
Operating Temp
-30 to 65 deg C
Power Consumption
20.6 watts
Channels
24 contact‑voltage input channels
Input Supply
125 VDC excitation
Terminal Type
Barrier‑style terminal blocks
Technology
Surface‑mount
Series
Mark VI
Product Type
Contact Input Terminal Board
Profinet / EtherNet/IP Deterministic Networks
Although the TBCI board is a passive termination device, its discrete‑signal routing aligns with deterministic scan cycles executed by Mark VI controllers. The board’s trace layout maintains stable propagation delay across all 24 channels, ensuring predictable timing for contact‑state transitions. Noise‑suppression circuitry at each input reduces high‑frequency interference and surge effects, preventing cross‑talk between adjacent contact groups and maintaining consistent I/O density scaling across simplex or redundant control segments.
Frequently Asked Questions
Q: Can the IS200TBCIH1C be replaced while the cabinet is energized? A: No. Replacement must occur with the control segment de‑energized to avoid undefined discrete‑input states.
Q: Does the board include jumper or configuration settings? A: No. All contact‑input behavior is fixed by design and upstream excitation characteristics.
Q: How does the board affect backplane loading? A: The board presents minimal static load; excitation current is limited upstream in the power distribution module.
Field Installation Guidelines
Maintain proper polarity when wiring each dry contact: one terminal provides the positive 125 VDC source, the other returns to the board.
Route contact wiring away from high‑energy conductors to reduce induced noise.
Ensure barrier‑type terminal screws are torqued evenly to prevent intermittent contact states.
Verify surge‑suppression grounding paths are intact before energizing the system.
For multi‑channel installations, segregate wiring bundles to avoid mechanical strain on terminal blocks.
