ABB DSMB-02C Rectifier Control Board – ACS800 MultiDrive – Tested

Product Overview

Original ABB DSMB-02C rectifier control board for ACS800 MultiDrive systems. Serves as the “command center” for the rectifier unit, controlling thyristor/IGBT triggering, DC bus voltage closed-loop regulation, and power management. Critical component for multi-drive systems where multiple inverter units share a common DC bus.

Key Features

• Genuine ABB original – for ACS800 MultiDrive rectifier units
• Rectifier control board – thyristor/IGBT triggering and DC bus regulation
• DC bus voltage: 500–1000V DC
• Control supply: 24V DC
• Protection: overvoltage, overcurrent, overtemperature, phase loss, power device fault
• Multi-color LED status indicators
• Internal bus communication with RDCU/AINT main control
• Compatible with DSMB-02 / 02A / 02B (firmware must match)
• Original pulled – no repair history

Specifications

Compatibility Note

• Compatible with ACS800 MultiDrive rectifier units (500–1000V DC bus)
• Installs in the rectifier unit’s dedicated slot
• NOT compatible with DSMB-01C, DSMB-03C – must use exact replacement
• Firmware must match original board – critical for proper operation
• Parameters stored in EEPROM – backup required before replacement
• Verify drive model, hardware version, and firmware revision before ordering
• Send rectifier nameplate photo for accurate matching

Quality Assurance

• Original pulled from working drive; tested functional with no repair history
• Actual photos sent before shipping
• Test video available upon request
• ESD anti-static packaging