The reason: 1 lack of air pressure;
2, loose cutter button is bad or circuit breaker;
3, loose cutter button PLC input address points to burn or no signal source (+ 24V);
4, loose knife relay does not operate;
5, loose knife solenoid valve damage;
6, less than a knife fight amount;
7, playing knife cylinder oil cup starvation;
8, playing knife cylinder failure;
Measures;
1, check the air pressure until the pressure reaches 6 kg plus or minus 1 kg can be;
2, replace the switch or check the line;
3, replacing the I / O board PLC PLC input or check the input signal source, modify the PLC program;
4, check the PLC output signal presence / absence, PLC output whether the burn, modify PLC program;
5, the replacement of the solenoid valve coil burned out, leak solenoid valve body, the piston does not move, replace the valve body;
6, the adjustment amount to loose knife fight knife smooth;
7, add the oil cup knife fight cylinder hydraulic oil;
8, playing knife cylinder internal screw loose, leak, will have to re-tighten the screws, replace the cylinder seals, if unable to repair, replace knife fight cylinder;