GE DS200SIOBH1ACA – I/O Control Board for GE Mark V Series

Overview

The GE DS200SIOBH1ACA is a high-performance input/output module designed for use within GE’s industrial control platforms—particularly the Mark V turbine control system. Engineered for rigorous industrial applications, this board provides robust signal interfacing between field-devices and higher-level control systems, ensuring reliable communication, accurate data acquisition, and durable operation under harsh environmental conditions.

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Structure & Composition

Internally, the DS200SIOBH1ACA features:

• A multi-layer printed circuit board with copper shielding and conformal coating for protection against dust, moisture, and electromagnetic interference (EMI).

• Signal input and output circuitry capable of handling analog and/or digital channels (depending on configuration) with optic or galvanic isolation to preserve signal integrity.

• Power regulation and transient suppression elements (e.g., TVS diodes) to safeguard against voltage spikes and ensure stable internal supply voltages.

• A connector interface designed to plug into the GE Mark V backplane or rack slot, enabling rapid insertion and replacement.

• Status indicator LEDs and diagnostic points for ease of maintenance and fault-finding in control installations.

  
  

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Technical Specifications

Below is a summary of key specifications for the DS200SIOBH1ACA (note: actual configuration may vary).

Parameter	Value
Input Voltage	24 V DC nominal (±10%)
Power Consumption	≤ 15 W approximate
Digital Channels	Up to 32 digital input channels (per one listing)
Operating Temperature	-40 °C to +70 °C (some sources up to +85 °C)
Ambient Humidity	5 %-95 % non-condensing
Dimensions	Approx. 140 × 100 × 45 mm (varies)
Protection Level	IP20 (typical enclosure rating)

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Features & Advantages

• Modular plug-in design supports rapid replacement and minimal downtime in turbine control racks.

• High-channel density combining digital and analog I/O (depending on variant) enables numerous field signals to be collected or driven via a single board.

• Enhanced durability: conformal coating, transient protection, reinforced connectors—designed to perform in vibration-heavy, high-temperature industrial environments (such as power plants).

• Compatibility with GE Mark V series control system architecture ensures seamless integration with existing plant control networks.

• Built-in diagnostics support fault isolation and simplified troubleshooting in large-scale control installations.

  
  

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Application Areas

The DS200SIOBH1ACA is typically employed in:

• Gas or steam turbine control systems and power generation plants, where reliable I/O interface boards are critical for safe operation.

• Industrial automation and process control systems (oil & gas, petrochemical, chemical plants) requiring rugged I/O modules.

• System retrofits or expansions of existing GE Mark V control hardware, enabling extended life of legacy systems.

• Monitoring and control networks where large numbers of digital inputs (or combination analog/digital) must be captured and processed in real-time.

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Installation & Maintenance Guidelines

• Use appropriate ESD protection when handling or installing the board to protect sensitive electronic components.

• Ensure the board is inserted fully into the rack slot, with secure backplane connector engagement and retaining screws tightened as per GE instructions.

• Install in a cabinet or rack that provides adequate ventilation and ambient cooling; avoid excessive dust, moisture, or corrosive environments.

• Periodically inspect board connectors and edge contacts for corrosion or wear; use dry compressed air or approved cleaning methods for dust removal.

• Before powering up, verify that the correct backplane slot and wiring correspond to the board’s function and that firmware or configuration settings are appropriate for the module.

• In case of replacement, use genuine GE part numbers to maintain system integrity, calibration, and compatibility.

  
  

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Additional Notes

While publicly available data on the DS200SIOBH1ACA is somewhat limited, available listings suggest that it may also support mixed analog and digital I/O—and potentially different protocol interfaces depending on system configuration. 
When procuring this module, ensure you validate the exact revision, firmware compatibility, and I/O assignment with your existing system documentation or GE support, as older control hardware may have multiple variants.