1. the machine tool cannot return to zero
reason:
1. the contact of the origin switch is stuck and cannot move;
2. the origin stopper cannot press the origin switch to the switch action position;
3. the water in the origin switch causes the contacts of the switch to rust and the contact is not good;
4. the origin switch circuit is disconnected or the input signal source is faulty;
5. the plc input point is burned out.
countermeasures:
1. clean up the stuck parts to make the moving parts move smoothly, or replace the travel switch
2. adjust the installation position of the travel switch so that the zero-point switch contact can be smoothly pressed to the switch action position by the stopper;
3. replace the travel switch and take waterproof measures;
4. check that there is no open circuit or short circuit in the switch circuit and whether there is a signal source;
5. replace the input points on the i/o board, do the parameter settings, and modify the plc program.
in order to better serve our customers, at the same time standardize after-sales service and prevent arbitrary charges, the price list of machine tool repair parts of hohai company is hereby announced as follows:
