ABB DAPC100 3ASC25H203 3BSC980004R1014 Control Processor Module

DAPC100 with part number 3ASC25H203 and full order code 3BSC980004R1014 is the core master control board for ABB Symphony DCS ASTAT thyristor drive control systems. It undertakes full closed-loop speed, torque and power regulation for DARA series power thyristor units, integrating multi-channel analog signal acquisition and multi-mode optical fiber communication interfaces. Conformal-coated PCB design delivers strong anti-corrosion and anti-interference performance, adapting to high-dust, high-temperature environments of thermal power and chemical plant control cabinets.

This discontinued main processor module is a core aftermarket maintenance spare for legacy ABB Symphony distributed control systems. It matches DATX110 digital I/O terminals and DAPU100 auxiliary processing boards, supports hot-swap replacement on standard Symphony rack backplanes, and carries front panel LED diagnostic lights to quickly locate communication breakdowns, analog signal loss and power supply faults during field maintenance.

Main Specifications

• Brand: ABB; Core PN: 3ASC25H209; Model: DAPC100; Full Order Code: 3BSC980004R1014; Applicable System: Symphony DCS ASTAT Drive Control
• Signal Input: 2 multi-type analog input channels (4-20mA, 0-10V, 0-20mA), isolated signal conditioning circuit built-in
• Communication Interfaces: 3 optical fiber optical links, RS232/RS485 serial port X5, dedicated thyristor control cables X7/X8
• Power Supply: 24VDC system power input via X4 terminal, single standard Symphony rack slot installation
• Compatible Power Units: DARA1000, DARA1010 series thyristor power modules, ASTAT multi-drive parallel systems
• Environmental Parameters: Operating -10℃ ~ +60℃, storage -40℃ ~ +85℃, 5%–95% RH non-condensing, IP20 cabinet grade
• Diagnostic & Configuration: Multi-status LED indicators; parameter configuration via ASTAT Tool PC software
• Certifications & Structure: CE industrial EMC certification; conformal coated PCB; weight approx 0.5kg

Core Functions

• Execute core closed-loop control algorithms for thyristor power units, precisely regulating output current, voltage and motor rotational speed to stabilize production process operating parameters.
• Three independent optical fiber communication channels realize vertical connection with upper DCS controllers and horizontal interconnection between multiple ASTAT drive units for multi-drive coordinated control.
• Acquire field analog feedback signals from transmitters and speed encoders, filter and isolate interference signals to avoid control deviation caused by industrial electromagnetic noise.
• Dedicated control wiring ports output trigger pulse signals to drive DARA thyristor modules, supporting single-unit and multi-unit parallel power expansion architectures.
• Hot-swappable single-slot design allows independent module replacement without full system power-off, cutting downtime for continuous thermal power and chemical production facilities.
• Unified Symphony bus protocol supports seamless data interaction with DATX series I/O modules and upper HMI panels, uploading real-time drive operating data and fault alarm information.

Application Scenarios

• Main drive control board spare replacement for ABB Symphony DCS cabinets in thermal power plants, combined cycle power stations and hydropower auxiliary control systems.
• Thyristor drive core spare parts for petrochemical refineries, natural gas compression stations and continuous chemical process production lines.
• Maintenance backup inventory for pulp & paper mills, metallurgical rolling mills and industrial large fan/motor speed regulation control systems.
• Matching master control accessory paired with DARA thyristor power modules, DATX digital I/O terminals and ABB CP400 series touch HMI panels.
• Retrofit replacement components for aging ASTAT drive systems suffering control signal loss, speed regulation drift and optical fiber communication failure faults.

• Global aftermarket spare stock for maintenance teams managing obsolete ABB Symphony DCS and ASTAT variable speed drive automation hardware worldwide.