Functioning
Voltage collapse in any phase or voltage asymmetry between phases above set value causes switching-OFF the motor. The motor switching-OFF occurs after delay of 4 sec, which prevents accidental motor switching-OFF caused by instantaneous voltage drop. Switching the motor ON anew occurs automatically when the voltage increases about 5V~ above activation voltage. At occurrence of these disturbances, it is not possible to set a motor in motion. In case of change of phase sequence, before the monitor, which causes change of motor rotation direction (in relation to that primarily set) along with impossibility of switching-ON the motor. The switching-ON is possible after the return to correct phase sequence.
