Parameter Description
Parameter Description
135
2. Action sequences with the automatic switchover sequence (P.249≠9999, P.250=9999).
3. Action sequences with the automatic switchover sequence series (P.249≠9999, P.250 ≠ 9999).
During the automatic switchover, A: P.247 MC Switchover interlocking time; B: P.248 starting
waiting time; C: P.57 restarting free operation time; D: P.58 restarting elevating time.
Note: 1. When the motor runs at 50Hz (or 60Hz), the commercial power supply will offer a more efficient operation
than the inverter will. Moreover, during the inverter maintenance/inspection period, the commercial power
supply circuit should be installed to prevent the motor from being stopped for too long.
2. To prevent the inverter from setting off the over-current alarm when changing between the inverter
operation and the commercial power supply operation, the interlock measure has to be taken. Once the
motor stops, it will be activated via the inverter. Switchover and interlock can be carried out through the
inverter and a complicated commercial power supply if commercial power supply switchover sequence
function that can send out the signal for electromagnetic contactor actions is used.
