Excessive bridge temperature. See also 4310. Wait until the bridge is cooled down. The fan contactor stays on as long as the warning is pending. Shutdown temperature, see 07.38 Drive max bridge temperature set. The bridge overtemperature warning will already appear at approximately 5°C below the shutdown temperature.
Check:
− The value of 05.11 Bridge temperature.
− The setting of 20.38 Drive fan acknowledge source.
− The setting of 20.40 Drive/Motor fan delay time.
− The ambient conditions (e.g. ambient temperature).
− The airflow and fan operation.
− The drive fan supply voltage.
− The drive fan direction of rotation.
− The drive fan components.
− The heatsink fins for dust pick-up.
− The drive cooling air inlet (e.g. filters).
− The drive cooling air outlet.
− For open drive doors.
− The motor power against the drive power.
− Inadmissible load cycle.
− The auxiliary code (format XXXY YYZZ).
Y YY identifies the power unit. In case of a hard parallel configuration.