Table of Contents
- The main motor cannot be started
- NCRDY is not displayed
- The X-axis does not work properly
- The size of X-axis is 5mm and 10mm larger or smaller than the normal state
- The blanking size is different from the actual programmed size
- The machine cannot go down
- No main pressure
- The slider does not drop after the foot switch is depressed
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 start switch of CNC system is not started
- X-axis, shear angle and clearance are not in place
Solutions
- Press the NC system start switch
- Press the hand wheel control key once, move the cursor to relevant positions respectively, check which of X, a and G is not in place, and analyze the cause.
The X-axis does not work properly #
Causes
- Servo drive alarm
- 1QF3 not closed
- The power line or encoder line or servo motor fails
Solutions
- Check the cause of the alarm (see remarks)
- Close 1QF3
- Check the wiring
The size of X-axis is 5mm and 10mm larger or smaller than the normal state #
Causes
The position finding is not accurate when returning to the reference point.
Solutions
- Shut down 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 artificial feeding
- Rear stop movement of machine tool
Solutions
- Refeeding and shearing
- Corrected X reference point
The machine cannot go down #
Causes
- Down valve stuck
- No signal to downstream valve
- No main pressure
Solutions
- Check 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 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
