Product Overview

• Part Number: PCD244A101, full part code 3BHE042816R0101
• Brand: ABB
• Applicable System: PEC80-SCC control platform, UNITROL series generator excitation system, AC800PEC power control system
• Type: I/O gateway and communication interface board

• FunctionServes as the signal hub between PEC80 main controller and S800 remote I/O racks. It expands access capacity for field sensors, collects temperature, pressure and current analog signals, transfers switch status digital signals to the main control unit. It supports HART protocol pass-through for intelligent transmitters, realizes parameter remote setting, fault diagnosis and process interlock logic transmission for generator excitation cabinets, medium voltage drives and power plant process control racks. It supports single or redundant DC24V power input for stable continuous operation.

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Core Features

1. Supports access to up to 12 sets of single/redundant S800 I/O modules, maximum 192 I/O channels for flexible system expansion
2. Compatible with HART V7 protocol, enables reading of transmitter auxiliary parameters, device calibration and online diagnosis
3. Dual power monitoring circuit with power voting function, supports redundant power supply to avoid shutdown caused by single power failure
4. Built-in cabinet temperature detection and comprehensive hardware self-diagnosis, with LED status lights for fault quick positioning
5. PCB conformal coating, dust-proof, moisture-proof and anti-electromagnetic interference, adapts high-interference power plant and chemical workshop cabinets

6. Soft marshalling function simplifies wiring configuration and on-site engineering debugging

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Technical Specifications

• Rated Power Supply: DC 24V ±10%, redundant dual power support
• Communication: Ethernet, compatible with S800 bus and HART V7
• Operating Temperature: -25℃ ~ +60℃
• Storage Temperature: -40℃ ~ +85℃
• Humidity: 5%~95% non-condensing
• Protection Grade: IP20 (cabinet internal installation only)
• HS Code: 85389091

• Supply: Brand new original, new old stock and fully tested refurbished boards available

• Certification: CE, UL

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Compatibility

• Matching control equipment: UNITROL excitation cabinets, AC800PEC controllers, PEC80-SCC rack
• Matching peripheral hardware: S800 series I/O modules, HART field transmitters
• Applicable industries: thermal power, hydropower, petrochemical, metallurgy

• Strict one-to-one replacement; cannot be substituted with PDD series modules

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Application

• Replacement maintenance when excitation system fails to read S800 I/O signals or HART instrument communication is abnormal
• Signal expansion renovation of old UNITROL generator excitation control cabinets
• Troubleshooting of intermittent signal loss and communication interruption on PEC80 control racks
• Long-term standby spare part for power station turbine, boiler and excitation automation cabinets