GE IS200TDBTH6A Terminal Board | 24-Channel

GE IS200TDBTH6A Discrete Input/Output Terminal Board

The General Electric IS200TDBTH6A is a Discrete I/O Terminal Board for Mark VIe systems. This TDBT board provides 24 contact inputs and 12 relay outputs. It supports DIN rail mounting in distributed control applications.

Technical Specifications

• Manufacturer: General Electric (GE)
• Model Number: IS200TDBTH6A
• Series: Mark VIe Speedtronic
• Product Type: Discrete I/O Terminal Board
• Functional Acronym: TDBT
• Input Channels: 24 contact inputs
• Relay Outputs: 12 form-C relays
• Input Voltage: 24 V DC
• Power Supply: +5 V DC
• Operating Temperature: -30°C to +65°C
• Mounting: DIN Rail
• Weight:1.75kg

Core Functions and Design

• The board provides 24 group-isolated contact inputs for discrete signals.
• It features 12 form-C relay outputs for control applications.
• Hardware filtering suppresses noise and guards against voltage surges.
• Support for 24, 48, or 125 V DC wetting voltages from external sources.
• Accepts optional relay boards for expanded functionality.

Operation and Configuration

• Input currents limited to 2.5 mA (circuits 1-21) and 10 mA (22-24).
• Wetting voltage ranges: 16-32V, 32-64V, and 100-145V DC.
• No hardware configurations or jumpers on main TDBT board.
• Option board uses six jumpers for relay activation control.
• Polymer fuses provide current limiting protection.

System Integration

• Compatible with Mark VIe distributed control systems.
• Connects to three PDIO I/O packs via D-type connectors.
• Ethernet communication with system controllers.
• Works with SRLY relay board and STCI contact input terminal assignments.
• Requires multiple PDIO packs for proper TMR operation.

Hardware Features

• Twelve large potentiometers arranged in three rows.
• Multiple metal oxide varistors (MOVs) for surge protection.
• Integrated circuits and passive components throughout.
• Three-port white connector for external connections.
• Conformal coating protects against environmental factors.

Frequently Asked Questions (FAQ)

• Where is the IS200TDBTH6A manufactured? GE produces this board in their Salem, Virginia facility.
• What is conformal coating? It is a thin chemical layer protecting the entire PCB surface.
• How many relay outputs does it have? The board provides 12 form-C relay output channels.
• What input voltages are supported? It accepts 24, 48, or 125 V DC wetting voltages.
• How is the board mounted? It uses DIN rail mounting or cabinet fastening options.