Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | DAPC100, 3ASC25H203 |
| Manufacturer | ABB |
| Product Family | ASTAT Soft‑starter Control System |
| Product Type | Main Digital Control Processor Board |
| Installation | Plug‑in eurocard board, installed inside ASTAT soft‑starter cabinet |
| Power Supply | 24 VDC auxiliary power supply |
| Lifecycle Status | Obsolete / End‑of‑Life. OEM manufacturing discontinued. Only new‑old‑stock, refurbished and field‑pulled used maintenance spare parts available; no brand‑new factory‑built units can be ordered. |
| ESD Handling Requirement | High‑performance drive control electronics; anti‑static wrist‑strap and anti‑static workstation required for installation and replacement operations. |
Electrical & Interface Specifications
- Serial Interfaces: X5 terminal supports RS‑232 / multi‑drop RS‑485 for parameter configuration, monitoring and host system communication.
- Fiber‑Optic DDCS Links: 3 optical channels. Channel 1 for vertical communication with higher‑level controllers; Channel 2 for horizontal inter‑unit synchronization among ASTAT devices; Channel 3 for internal fiber connection to DAPU100 process I/O unit.
- Drive Control Interfaces: X7, X8 control connectors for thyristor power modules, compatible with DARA series power assemblies.
- External I/O: Connects to DAPU100 I/O module for field digital and analog signal processing.
- On‑Board Circuitry: Main CPU unit, soft‑start control algorithm logic, fault diagnosis circuit, parameter memory, optical communication transceiver circuit.
- Power Consumption: Typical 15‑18 W.
- Operation Limitation: Cannot operate standalone. Must work with ASTAT power unit, DAPU100 I/O board and 24 VDC auxiliary power supply.
- Compatibility Matrix
‑ Compatible System: ABB ASTAT soft‑starter series
‑ Matching modules: DAPU100, DARA1000 / 1001 / 1010 power modules
‑ Hot‑swap: Not supported; power shall be fully cut off before board replacement.
Environmental Specifications
表格
| Item | Value |
|---|---|
| Operating Temperature | ‑20 °C ~ +60 °C inside soft‑starter cabinet |
| Storage / Transport Temperature | ‑40 °C ~ +85 °C for long‑term spare‑part preservation |
| Relative Humidity | 5 %‑95 % RH, non‑condensing; avoid condensation to prevent circuit corrosion. |
| Compliance Standard | CE certification for industrial automation environment, complies with EMC industrial standards. |
| Protection Class | IP00 printed‑circuit assembly; installed inside protected cabinet. |
| Dimension | Standard eurocard plug‑in form‑factor |
| Net Weight | Approx. 0.35 kg |
| Conformal Coating | Conformal‑coated variant available for corrosive and high‑humidity industrial environments. |
| Vibration Resistance | Complies with IEC 60068‑2‑6 industrial cabinet vibration criteria. |
Main Functions
- DAPC100 (3ASC25H203) is the main digital processor control board for ABB ASTAT soft‑starter system. It executes soft‑start / soft‑stop control algorithm for medium‑voltage or low‑voltage motors, generates firing pulses for thyristor power modules via dedicated control cables.
- Three‑channel DDCS fiber‑optic communication realizes multi‑layer data exchange: communication with upper‑level control system, synchronization between multiple ASTAT soft‑starters, and data interaction with DAPU100 field I/O unit.
- RS‑232 / RS‑485 serial port supports local parameter setting and remote monitoring, realizes connection to PLC / SCADA host system.
- Implements complete motor protection logic: over‑current, phase unbalance, phase loss, thermal overload protection, fault detection and event history storage.
- Typical field failure symptoms
‑ Soft‑starter cannot start, no firing command output to thyristor modules
‑ Optical DDCS communication fault, loss of communication with DAPU100
‑ Serial communication failure, cannot connect to configuration tool
‑ Random system reset or fault trip during motor running
Common root causes: 24 VDC power supply abnormality, optical fiber damage, ageing of onboard electronic components, connector poor contact, cabinet dust and moisture contamination.
- Pure maintenance‑oriented spare‑part component, only for repair and replacement of existing legacy ASTAT soft‑starter installations; not suitable for new‑project engineering deployment.
Typical Applications
- Spare‑part replacement for DAPC100 main control board inside ABB ASTAT soft‑starter cabinet.
- Troubleshooting scenarios: soft‑starter cannot execute start‑stop sequence, communication breakdown, frequent protection tripping.
- Preventive‑maintenance spare‑part inventory for water‑treatment, cement, mining, chemical plants equipped with ASTAT soft‑starter units.
- Hardware refurbishment for decommissioned ASTAT soft‑starter assemblies.
Reviews
There are no reviews yet.