Technical Specifications Multi‑channel analog measuring signal and digital fault signal interfaces. Auxiliary 24 V DC working power. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Partial signal channel galvanic isolation.
Functional Features Collects temperature, current and fault status signals from power unit assemblies. Completes signal conditioning and transmits processed data to drive main control board. Receives control commands from main board and outputs auxiliary control signals to power cabinet auxiliary components. On‑board LED indicators display board running and fault state.
Application Scenarios Spare power control board for ABB medium‑power frequency converter. Used for drive equipment overhaul in chemical, water‑supply industry sites.
Performance Parameters Accurate multi‑point signal sampling performance. Stable internal signal transmission capability. Reliable hardware fault status feedback.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Signal conditioning circuit assemblies, logic processing chips and multi‑pin connectors. Metal fixing screws. Conformal protective coating on circuit surface.
Structural Characteristics Standard rectangular circuit board. Multiple signal connectors arranged on board edges. Reserved screw holes for cabinet mounting.
Working Principle Various measuring and fault signals from power unit enter GDB021BE through connectors. After filtering and level conversion processing, valid data is uploaded to main control board. Control commands from main board are converted into corresponding auxiliary drive signals and output to on‑site auxiliary components.
Installation Requirements Cut off frequency converter main power and auxiliary power before replacement. Perform anti‑static protection. Fasten GDB021BE to cabinet mounting position. Insert all matching signal connectors completely. Restore power supply, run drive self‑check and verify power‑unit signal sampling function.
Usage Notes Prevent mechanical damage to connector pins during installation. Hot‑plug under powered state is prohibited. Confirm no hardware fault code after power‑on commissioning.
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