Technical Specifications Matching drive DC bus voltage range. Rated braking power corresponds to host drive configuration. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Built‑in over‑temperature and over‑current protection circuit.
Functional Features Consumes regenerative feedback energy from motor during braking operation. Suppresses DC bus voltage surge of frequency converter. On‑board thermal sensor monitors internal operating temperature. Status signal output to main drive control board. Built‑in protection triggers cut‑off action under over‑temperature and over‑current conditions. LED indicators display module running and fault status.
Application Scenarios Brake unit spare part for ABB industrial frequency converters. Applied in hoist, conveyor and other equipment with frequent motor braking requirements.
Performance Parameters High‑efficiency regenerative energy dissipation performance. Fast protection response under abnormal working conditions. Stable repeated braking operation capability.
Material Composition Metal heat‑dissipation housing. High‑power braking resistance assemblies, power semiconductor switching components. Protection circuit printed circuit board. High‑current power terminals and signal connectors.
Structural Characteristics Metal enclosed rack‑mount module structure. High‑current power terminals and low‑voltage signal terminals arranged on front side. Heat dissipation fin structure on housing surface.
Working Principle When motor feeds regenerative energy back to DC bus, bus voltage rises to trigger brake unit activation. Internal power switch turns on, regenerative energy is consumed by built‑in braking resistor. Thermal sensor monitors internal temperature in real‑time;
Installation Requirements Fasten EHDB280 to cabinet mounting position. Connect high‑current DC bus power wiring and low‑voltage signal wiring strictly according to terminal definition. Ensure good ventilation space for heat dissipation. Restore power supply, execute drive commissioning and verify braking function during motor deceleration.
Usage Notes Ensure DC bus capacitor complete discharge before any disassembly operation. Maintain sufficient heat dissipation clearance around module. Check temperature rise and braking effect after installation.
There are no reviews yet.