GE IS200TBCIS2CCD TBCI Group Isolated Contact Input Terminal Board

Product Description

GE IS200TBCIS2CCD is a Group-Isolated Contact Input Terminal Board (TBCI) for GE Speedtronic Mark VI / Mark VIe turbine control systems. It serves as field interface for dry contact signals, integrating 24 discrete contact input channels divided into 3 isolated banks (8 channels per bank) with 125VDC wetting voltage. It receives passive dry contact signals from pressure switches, limit switches, flame switches and emergency stop pushbuttons. Connected to PDIA digital input card via ribbon cable, it supports TMR triple-modular redundant 2oo3 voting architecture. Group-wise galvanic isolation suppresses common-mode noise for turbine protection, BMS burner management and ESD emergency shutdown signal acquisition. Rack pluggable design with removable terminal blocks for convenient field wiring and maintenance. This model is end-of-life and supplied only as spare parts for legacy combined-cycle gas & steam turbine cabinets.

Technical Parameters

• Model: IS200TBCIS2CCD
• Type: Group-Isolated Contact Input Terminal Board (TBCI)
• Compatible System: GE Speedtronic Mark VI / Mark VIe Turbine Control System
• Input Channels: 24 dry-contact discrete inputs, 3 isolated banks, 8 channels per bank
• Wetting Voltage: 125VDC
• Signal Type: Passive dry contact
• Architecture: TMR triple redundant, 2oo3 voting supported
• Interface: Ribbon cable to PDIA input card, removable terminal blocks
• Isolation: Galvanic isolation between banks for common-mode noise rejection
• Power Supply: 24VDC from backplane
• Mounting: Rack pluggable terminal board
• Operating Temperature: -40℃ ~ +70℃
• Features: Group isolation, multi-channel discrete signal concentration, turbine safety interloop compatible
• Product Status: OEM EOL, industrial spare part

Product Applications

1. Dry contact signal acquisition for ESD emergency shutdown and protection interlocks of gas & steam turbine Mark VI / Mark VIe control systems.
2. BMS burner management system, receiving flame detectors, pressure switches, limit switches and valve position feedback signals.
3. TMR triple redundant turbine protection for combined-cycle power plants; group isolation limits fault propagation across channels.
4. Field passive switch signal concentration and terminal transition, isolating field interference to protect downstream main I/O cards.
5. Maintenance, spare parts replacement and protection circuit retrofitting for legacy GE Mark VI / Mark VIe turbine control cabinets.

Series Models

• IS200TBCIS2CCD: 24-channel group-isolated contact input terminal board TBCI
• IS200TBCIH1A: Older revision TBCI contact input terminal board
• IS200TRLYS1B: Relay output terminal board
• IS200TRPGH1B: Primary trip terminal board (TRPG)