ABB DAPC100 (3ASC25H203) – Drive Application Control Board for AC 800PEC‑based Power Electronics and Medium‑Voltage Drives

The ABB DAPC100 (model code 3ASC25H203) is a drive application control board typically used within AC 800PEC–based control systems. In many cases you’ll find it at the core of ABB medium‑voltage drive and power‑electronics cabinets, coordinating high‑speed control, fiber‑optic links to the power units, and time‑critical drive logic. From my experience, maintenance teams choose this board as a one‑for‑one replacement to restore uptime without changing the wider control architecture.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week when in stock; no more than one month at the latest
• Payment terms: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• High‑speed drive control – Designed for deterministic real‑time control in AC 800PEC ecosystems, where tight loop response is critical.
• Fiber‑optic interfaces – You might notice multiple fiber channels used to communicate with power stacks and gate‑driver units, minimizing noise susceptibility.
• Backplane integration – Plugs into the controller rack/backplane, simplifying power, signaling, and system bus connectivity.
• Industrial‑grade build – Robust PCB and component selection suited for cabinet environments typically up to 55°C ambient.
• Form‑fit replacement – Maintains compatibility for systems originally engineered around DAPC100 (3ASC25H203), reducing retrofit risk and downtime.
• Serviceable in the field – Supports controlled replacement procedures with ESD protection and straightforward fiber routing.

Technical Specifications

Application Fields

The DAPC100 is commonly used in ABB medium‑voltage drives and power‑electronics applications built on the AC 800PEC platform. Typical scenarios include:

• MV variable‑speed drives for compressors, pumps, and fans in oil & gas, power, and water utilities
• High‑power converters and test benches requiring precise, deterministic control
• Custom power‑electronics cabinets where fiber‑optic control to gate drivers is required
• Service replacements in installed ABB drive systems to quickly restore uptime

Advantages & Value

• Reliability: Field‑proven hardware design that seems to handle cabinet heat and electrical noise well when ventilation is adequate.
• Compatibility: Form/fit alignment with existing AC 800PEC setups reduces commissioning effort.
• Reduced downtime: Drop‑in replacement minimizes re‑engineering, typically getting assets back online faster.
• Lifecycle support: We help match firmware/application revisions so the board integrates smoothly with existing nodes.
• Total cost control: Short lead times, predictable logistics, and a 365‑day warranty support maintenance budgeting.

A maintenance supervisor at a steel plant told us they swapped a failed DAPC100 during a brief stop, reconnected the fibers, and the drive came back with no parameter drift—exactly the kind of low‑risk service event teams like to see.

Installation & Maintenance

• Cabinet environment: Install in a clean, dry, ventilated control cabinet (typ. IP54 or better). Maintain ambient 0…+55°C and avoid condensation.
• Wiring & fibers: De‑energize the cabinet; observe ESD protection. Label and route fiber‑optic cables with gentle bend radii; verify connectors are clean before mating.
• Power & seating: Ensure 24 VDC backplane supply is stable. Fully seat the board and secure with the designated fasteners.
• Firmware alignment: Match application/firmware revisions to the host AC 800PEC controller as per site documentation.
• Routine care: Periodic dust removal with ESD‑safe tools; check fiber integrity and backplane connectors during scheduled shutdowns.
• Safety: Follow lockout/tagout procedures and manufacturer ESD guidelines during handling and replacement.

Quality & Certifications

• CE compliant; RoHS conform where applicable
• Manufactured under ISO 9001 quality systems
• UL considerations typically handled at cabinet/system level
• Warranty: 365 days (repair/replace policy)