Z525 vertical drilling machine circuit

When work is required, turn on the Qsl switch, and pull the fuse FU1 through the 'Shu 8 Shen Dian'
to the upper pile heads of the contactors KM1 and KM2 and
the upper pile head of the QS2 transfer switch to prepare for the operation of the motor
. The 380V power supply is sent to the control circuit through fuse FU2.
When it is necessary to operate the drilling machine spindle motor to rotate forward, put the operating handle in
the right position, and then the travel switch SQ1 is closed. The contacts of S (a_b) and
SQ (d) are closed, the KM1 coil is powered and
the main shaft of the motor M1 is powered to rotate forward. The motor needs to be stopped. The operating
handle is in the stop position, and the travel switch SQ1 contact is broken Open to
stop the spindle motor. If you want to reverse the spindle
motor, move the operating handle to the left position, the contact of the travel switch sQl is closed, and the coils of the travel switch s02 (ac) and SQ3 (ae) are closed, thus connecting the
The KM2 coil circuit of the contactor makes KM2 close and the motor runs in reverse. If it is necessary to operate the cooling pump motor, turn on the transfer switch
Qs to make the motor run. There are short-circuit protection and over-current protection devices in the entire circuit. The commutation contactor coils
are interlocked with normally closed auxiliary contacts to prevent the contactors from closing simultaneously and causing a short circuit.