Description

GE DS200TCDAH1BHJE Digital I/O Board

Configured for discrete signal acquisition and output execution in the GE Speedtronic Mark V turbine control system, the GE DS200TCDAH1BHJE (DS200TCDA Digital I/O Board) provides direct physical/electrical execution through optically isolated digital input and output channels. The board transfers field contact, trip switch, sensor, and actuator signals through the IONET backplane interface.

Hardware Specifications

Parameter	Specification
Model	DS200TCDAH1BHJE
Brand	GE
Origin	USA
Weight	0.8 kg
Dimensions	178 x 101 x 30 mm
Operating Temp	-20 deg C to +60 deg C
Power Consumption	Powered from 5 VDC, 24 VDC, and 125 VDC system rails
Board Type	Digital Input/Output Processor Board
System Platform	GE Speedtronic Mark V Turbine Control System
Digital Inputs	16 optically isolated channels
Digital Outputs	16 optically isolated channels
Isolation Method	Optocoupler-based galvanic isolation
Communication Interface	IONET proprietary backplane communication
Connectors	Dual 50-pin headers and 2 x 3-pin plugs
Configuration	8 jumper blocks (JP1-JP8)
Diagnostics	10-LED diagnostic array and CR9 side LED
PCB Protection	Full conformal coating

IONET Backplane and Digital Signal Processing

The DS200TCDAH1BHJE integrates GE Mark V digital I/O processing functions through the IONET backplane communication network. The onboard microcontroller performs local I/O scanning and signal handling, reducing direct processing load on the turbine control processor.

The board supports deterministic digital data exchange between field devices and the Mark V control core. Input channels accept discrete signals from limit switches and sensors, while output channels provide control signals for relay interfaces, solenoid drivers, and annunciator circuits through compatible relay driver boards.

Frequently Asked Questions

Q: Does the DS200TCDAH1BHJE provide electrical isolation between field signals and the control system?
A: Yes. The board uses optocoupler-based galvanic isolation for its digital input and output channels to separate field wiring from internal control electronics.

Q: What communication method is used for data exchange with the Mark V system?
A: The board communicates through the proprietary GE IONET backplane interface for digital signal transfer between I/O hardware and the turbine control processor.

Q: What diagnostic functions are available on the board?
A: The board includes a 10-LED diagnostic array for channel status indication and a CR9 LED for board power and processing activity monitoring.

Field Installation Guidelines

Install the DS200TCDAH1BHJE in the designated GE Speedtronic Mark V rack position and verify connector alignment before insertion. Ensure that dual 50-pin headers and auxiliary plugs are fully seated to maintain correct field signal routing.

Field wiring should be separated from high-current power conductors and high-noise switching circuits. Use appropriate cable shielding practices, with shield termination following the grounding requirements of the turbine control cabinet design. Verify supply rail connections for 5 VDC, 24 VDC, and 125 VDC sources before energizing the module.

Maintain clean cabinet conditions to preserve the conformal coating protection and prevent contamination from moisture, dust, or conductive particles. Confirm jumper block settings match the approved control configuration before system operation.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems