What is the resistance of the gantry crane?
Gantry hoist wire motor series resistance speed control wiring there are two, divided into parallel connection and asymmetric connection.
The resistance of the parallel connection is the contactor cut, and the asymmetric connection is the direct removal of the cam controller.
Parallel connection removal resistance series is generally divided into four levels 5 level 6.
Wiring method, the motor rotor circuit three lines were connected to the resistance box Z1.