Product Overview

• Part Number: PDD500A101, full part code 3BHE037649R0101
• Brand: ABB
• Series: PDD D200 automation control series
• Type: Multi-interface communication & process control main board

• FunctionServes as core communication gateway and logic processing unit. It realizes bidirectional data exchange between AC800M, Symphony Plus DCS, field instruments and upper HMI/SCADA. It processes field I/O data, transmits measurement signals of temperature, pressure and flow, uploads alarms and operation trends, downloads control programs and parameters via multiple bus ports. It supports independent logic operation and signal distribution for generator excitation, medium voltage drive and process control cabinets.

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Core Features

• Abundant onboard interfaces: Four RJ45 Ethernet ports, two DB9 RS232/RS485 serial ports, terminal I/O terminals
• Supports Modbus TCP, Modbus RTU, TCP/UDP multi mainstream industrial protocols; compatible with engineering debugging and remote access
• Industrial coated PCB, dust-proof, moisture-proof, oil mist resistant and anti-electromagnetic interference, stable in power plant, petrochemical strong-interference cabinets
• Complete LED status indicator array for power, communication link, operation and channel faults for fast on-site troubleshooting
• Standard card slot installation, fixed by screws; supports hot swap during cabinet maintenance

• Built-in hardware watchdog, overvoltage/overcurrent protection to avoid crash caused by abnormal power supply

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Technical Specifications

• Power Supply: DC 24V (input range 18V~30V)
• Ethernet: 4-channel 10/100Mbps adaptive RJ45
• Serial port: 2 × DB9 configurable RS232 / RS485
• 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

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Compatibility

• Matched control systems: ABB AC800M, Symphony Plus, Freelance DCS, UNITROL excitation system
• Connectable devices: Remote I/O modules, inverters, transmitters, touch screens, upper monitoring servers
• Applicable industries: Thermal power, hydropower, petrochemical, metallurgy, water treatment

• Strict one-to-one replacement; cannot be substituted with PDD200A101 or other PDD series modules

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Application

• Replacement when DCS fails to communicate with field equipment or upper monitoring system offline
• Communication expansion upgrade for old excitation cabinets and frequency conversion control racks
• Troubleshooting of intermittent data loss, communication jitter and abnormal program download
• Long-term spare backup for power plant boiler, turbine and chemical pipeline automation control cabinets