The main motor cannot be started
Causes:
- Emergency stop switch off
- 1QF1 switch off
- Lack of phase
- Hydraulic oil cannot be extracted
Solutions:
- Turn on the emergency stop switch
- Close 1QF1 switch
- Check the circuit
- Check whether the filter is blocked
NCRDY is not displayed
Causes
- The CNC system start switch is not activated
- The X-axis, shear angle, and clearance are not properly set
Solutions
- Activate the NC system start switch
- Press the hand wheel control key once and move the cursor to the relevant positions to check which of X, A, and G are not properly set, and analyze the cause.
The X-axis does not work properly
Causes:
- Servo drive alarm
- 1QF3 not closed
- Power line, encoder line or servo motor failure
Solutions:
- Check the cause of the alarm (refer to remarks)
- Close 1QF3
- Check the wiring.
The size of X-axis is 5mm and 10mm larger or smaller than the normal state
Causes:
Inaccurate position finding while returning to the reference point.
Solutions:
- Shutdown and restart.
- Move the reference point sensor 1-2mm or adjust the sensing distance of the sensor.
The blanking size is different from the actual programmed size
Causes:
- Caused by manual feeding
- Rear stop movement of machine tool
Solutions:
- Try feeding and shearing again
- Adjust the X reference point
The machine cannot go down
Causes:
- Down valve stuck
- No signal to downstream valve
- No main pressure
Solutions:
- Check the down valve
- Check the control circuit
- Check the main pressure valve
No main pressure
Causes:
- Main motor not started.
- The main pressure valve is damaged or inoperative.
- PLC control circuit failure.
Solutions:
- Start the main motor.
- Replace or clean the main pressure valve and check the control valve coil circuit.
- Check the PLC controller.
The slider does not drop after the foot switch is depressed
Causes
- The controller has no “ncrdy” signal
- Loose line
- PLC no signal output
Solutions
- Check that there is no “ncrdy” reason
- Check and connect relevant circuits according to the electrical schematic diagram
- Check PLC controller
