Basic Information

• Model: IS200TBCIH2CAA

• Part Number: MRP604466

• Brand & Series: GE Speedtronic Mark VI / Mark VIe Turbine Control System

• Product Type: Contact Input Group Isolation (TBCI) Terminal Board

• Compatible Modules: Works with Mark VI PDIA digital input I/O packs (e.g., IS220PDIAH1A)

• Country of Origin: USA

Product Overview

Core Functions

1. 24 Dry Contact Inputs: Provides 24 independent dry contact input channels, one pair of terminals per channel, supporting passive dry contact connection.

2. Electrical Isolation & Surge Suppression: Built‑in filtering, surge suppression, and electrical isolation for each input, blocking field interference, overvoltage/overcurrent, and protecting backend I/O modules.

3. Plug‑in Terminal Design: Two sets of plug‑in barrier terminal blocks (TB1/TB2), 12 channels per block (24 total screw connections), supporting up to #12 AWG wire; terminal blocks can be unplugged individually for maintenance without full power‑off or disconnection.

4. Standard Interface Connections: 3 DC‑37 female connectors (JT1/JS1/JR1) with latching fasteners, 2 power input connectors (JE1/JE2), plus a metal shield terminal bar for EMI suppression.

5. No Jumpers Required: No hardware jumpers or DIP switches; signal definition fully matches the Mark VI system for direct plug‑and‑play compatibility.

Technical Specifications

• Input: 24 dry contact inputs; 2.5mA per channel (channels 1‑21), 10mA per channel (channels 22‑24); 24VDC power supply.

• Terminal Configuration: Two plug‑in terminal blocks (TB1/TB2), 24 screw contacts (12 signals) per block; accepts up to #12 AWG wire.

• Interfaces: 3×DC‑37 (female, latching), 2×power connectors (JE1/JE2), shield grounding terminal strip.

• Temperature: Operating 0°C to +60°C; Storage -40°C to +85°C.

• Protection: IP20 (cabinet‑mounted); UL94 V‑0 flame‑retardant base, tin‑plated copper alloy terminals.

• Mounting: Standard 19‑inch rack/rail mounting, fits Mark VI system cabinet slots.

• Current Load: 2.5mA per input (1‑21), 10mA per input (22‑24); no hardware jumper settings.

Typical Applications

• Dry contact signal integration for gas/steam turbine control systems (shutdown, interlock, limit, status feedback)

• Field signal isolation and terminal expansion for Mark VI/VIe digital input I/O modules

• Signal transfer for safety interlock circuits in power plants, combined‑cycle stations, industrial turbines

• Isolation, filtering, and surge protection for switch signals in high‑interference industrial field environments