IS200TBCIH1BCE GE Mark VI Speedtronic Contact Terminal

Product Description

The IS200TBCIH1BCE (Revision R26428) is a high-density Contact Input Termination Board (TBCI) designed for the General Electric Speedtronic Mark VI turbine control system. This module serves as the primary hardware interface for discrete "dry contact" field inputs, translating external switch or relay states into digital logic for the control rack. Engineered for the high-demand environments of gas and steam turbine applications, the IS200TBCIH1BCE provides essential signal conditioning, surge protection, and noise suppression.

The board features two large-scale terminal blocks providing a total of 96 contact points, supporting up to 24 discrete contact inputs in a TMR (Triple Modular Redundant) or Simplex configuration. Each input circuit includes robust EMI filtering to prevent false triggering from electrical noise common in industrial power generation settings. The IS200TBCIH1BCE connects to the I/O processor via specialized cabling, ensuring a secure and low-impedance path for critical system feedback.

Technical Specifications

• Model Designation: IS200TBCIH1BCE

• Revision Number: R26428

• System Control Platform: GE Speedtronic Mark VI

• Input Architecture: Discrete Dry Contact Inputs

• Connection Capacity: 96 total points across two 48-point terminal blocks

• Input Channels: Supports up to 24 contact inputs

• Contact Excitation: 24 VDC or 125 VDC (depending on the associated I/O processor and jumper settings)

• Signal Protection: Integrated surge suppression and passive RC filtering for EMC compliance

• Isolation: Optical isolation provided via the connected VCMI or controller interface

• Mounting Configuration: Designed for standard Mark VI I/O rack mounting

• Physical Dimensions: 170 mm x 90 mm (standard TBCI footprint)

• Operating Temperature Range: 0 °C to +60 °C

• Storage Temperature Range: -40 °C to +85 °C

Functional Comparison & Compatibility

The IS200TBCIH1BCE is functionally distinct from the TBCIH2 series. While both handle contact inputs, the H1B variant is specifically optimized for applications requiring high-density wiring and specific voltage excitation levels often found in heavy-duty gas turbine frame sizes. It is critical to verify the revision code R26428 to ensure firmware and cable connector compatibility with existing V-Type or M-Type controller racks.

Frequently Asked Questions

Can the IS200TBCIH1BCE be used with the Mark VIe system?

While physical mounting may be similar, the IS200TBCIH1BCE is primarily designed for the Mark VI VME-based platform. For Mark VIe systems, the IS200TBCIS series is generally preferred unless a migration bridge is in place.

Does this board provide its own contact excitation power?

No, the board acts as a termination and routing interface. Excitation voltage is typically supplied from the control cabinet power distribution and routed through the IS200TBCIH1BCE to the field contacts.