GE IS200TBCIH1BBC Contact Input Terminal Board

The GE IS200TBCIH1BBC, also cataloged as the IS200TBCIH1BBC contact input terminal board, operates as a dedicated hardware component for dry‑contact state acquisition within Mark VI control racks.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

In Mark VI and Mark VIe architectures, the board aligns with GE backplane bus communication velocity limits and deterministic Ethernet‑based I/O pack timing. When used with side‑mounted I/O packs, contact state updates propagate through fixed‑cycle Profinet / EtherNet/IP paths. Firmware flash compatibility ensures that pack updates do not disturb established contact excitation wiring or input‑state validation logic. I/O density scaling remains consistent across simplex and TMR configurations.

Frequently Asked Questions

Q: Can the IS200TBCIH1BBC be inserted or removed while the rack is energized? A: The board is not designed for hot‑swap. Removal or insertion should only occur when the associated rack segment is de‑energized to avoid transient loading on the backplane.

Q: How does the board behave if excitation voltage becomes unstable? A: If excitation voltage drops significantly, the I/O pack detects the condition and latches a diagnostic alarm. Input channels may be forced into a fail‑safe state depending on configuration.

Q: What occurs during TMR mismatch conditions? A: In TMR mode, if the board’s input value does not match the voted value from all three channels, a fault is generated to indicate a discrepancy.

Field Installation Guidelines

• Terminate shields at the designated grounding points near the terminal blocks to minimize induced noise.

• Route dry‑contact wiring separately from high‑current conductors to reduce susceptibility to surge interference.

• Verify excitation voltage routing through JE1 and JE2 before landing field wiring.

• Ensure molded‑plug cables are fully seated when connecting to VCCC or VCRC processor boards.

• In TMR systems, confirm all three JR connectors are engaged to maintain correct R/S/T voting behavior.