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2. ELECTRICAL CIRCUIT CONTROL
2-1 Electrical Wiring
1. The electrical control cabinet is located at the back side of headstock. Opening the
cabinet cover and connect the power source wires to the terminals (R, S & T)
The wires between the power source and the terminals must have over sectional area of
2
21.2mm
for 230V (8.4 mm
spindle motor).
2. The main power switch between the machine
and the power source also should be equipped with
safety fuses. Also the machine must have a ground
wire.
2-2 Electrical Equipment
1. The electrical cabinet is also equipped with overload circuit breakers and electric
magnetic contactors to protect motors from overload during excess heavy cutting.
2. The forward/reverse switch is connected with micro switch.
3. The foot brake is connected with micro switch. Stepping the footbrake is quicker
to stop the lathe than turning off the main power switch. The spindle can only
rotate again by resetting and operating the spindle operation control lever after
releasing the foot brake.
4. The spindle will rotate continuously as long as the jog button on the top of the
electrical control panel is pressed.
2
for 480V on 30HP
7
Fig. 2-1
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