The inverter frequently gives alarm codes, speed regulation fails, and the machine can only run at fixed speed or stop directly, unable to adapt to different production requirements.
Main causes: random parameter modification by unprofessional operators; blocked cooling fan and poor heat dissipation; large grid voltage fluctuation and power interference from shared high-power equipment line.
Solutions: Restore inverter factory parameters and lock key settings; clean cooling dust and fan debris regularly; arrange independent power supply line to avoid interference and recover normal speed regulation function.
