I use a contactor to switch off the brake off an 3x380V electrical hoist.
Becouse there are only 3 phases and no control signals, I use two phases to feed the coil (380V). When the motor turns left or right, the contactor switches. So far, no problem.
When lowering the load, the moment the power is cut, the contactor closes with a delay of a few ms. This couses the load to accelerate for a moment before the brake turns on.
Is there any simple modification or sollution for this ?
Maarten.