GE DS3800HIOC – High-Density Digital I/O Module

Technical Specifications

• Manufacturer: General Electric (GE)
• Model: DS3800HIOC
• Series: DS3800 DCS / Mark IV Speedtronic
• Type: High-Density Digital I/O Module (HIOC)
• Digital Inputs: 32 channels (24 VDC dry contact; opto-isolated, 1500 V AC)
• Digital Outputs: 32 channels (relay, 24 VDC/2 A; NO/NC)
• Communication: 1 × proprietary DCS bus (10 Mbps), 1 × RS-485 (optional)
• Processor: On-board microprocessor (10 MHz)
• Power Supply: 24 VDC (external, redundant input)
• Power Consumption: 20 W
• Weight: ~0.2 kg
• Operating Temperature: 0°C to +60°C
• Certifications: CE, UL 508, CSA C22.2 No. 142

Key Features

1. 32-Channel High Density: 32 digital inputs and 32 digital outputs provide large-scale digital signal processing capability for complex industrial systems.
2. Galvanic Isolation: 1500 V AC opto-isolation between field circuits and internal logic protects the module from voltage spikes, EMI, and ground loops.
3. High-Speed Signal Processing: 10 MHz microprocessor + 10 Mbps DCS bus communication enable real-time signal collection and control with 1 ms response time.
4. Compact & Rugged Design: Small form factor (89 × 32 × 32 mm) saves cabinet space; ruggedized components and conformal coating ensure reliability in harsh industrial environments.
5. Redundant Power Input: Dual 24 VDC power inputs support redundant power supply, ensuring uninterrupted operation even if one power source fails.

Application Scenarios

• Turbine Control: Mark IV Speedtronic system gas/steam turbine control for monitoring limit switches, pressure switches, and safety interlocks.
• Power Generation: Thermal power plants, combined-cycle power plants, and hydroelectric power plants for generator control, breaker control, and BOP monitoring.
• Industrial Automation: Oil refineries, chemical plants, and manufacturing plants for production line control, equipment interlock, and safety system monitoring.