Technical Specifications Main control signal input interface, multi‑channel power unit feedback terminals. Auxiliary power 24 V DC, typical power consumption 5.4 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated printed circuit board.
Functional Features Receives control instructions from drive main control unit. Generates and distributes drive signals for inverter power modules. Collects temperature, current and fault feedback signals from power stack. On‑board LED displays signal transmission and hardware fault status. Built‑in hardware self‑diagnosis detects signal circuit and communication faults.
Application Scenarios Power interface spare part for ABB high‑power variable‑frequency drive. Used for large‑capacity drive equipment maintenance in heavy‑industry field.
Performance Parameters Precise control signal output performance. Rapid power unit fault signal feedback. Reliable continuous operation under high‑interference cabinet environment.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Signal isolation, amplification and signal conditioning assemblies. Conformal protective coating. Internal plug‑in connectors and signal terminals.
Structural Characteristics Cabinet fixed‑mount circuit board. Equipped with multi‑group internal signal connectors. Reserved mechanical fixing holes. Weight approximately 0.53 kilogram.
Working Principle Control commands from main board are received and converted into drive signals for power modules. Various status feedback signals from power stack are acquired and transmitted back to main controller. Diagnosis circuit continuously monitors each signal channel operating state.
Installation Requirements Completely cut off converter main power and discharge high‑voltage capacitors before replacement. Fasten AINT‑14C to specified cabinet mounting position. Complete all internal plug‑in connections. Restore power supply, verify power unit feedback signals and execute equipment running test.
Usage Notes Strictly follow electrostatic protection operating specification. Confirm all connectors are fully seated. Avoid mechanical damage to conformal coating. Verify drive protection functions after board replacement.
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