PLC integrated machine maintenance
Model: XP3-18RT-C
Failure phenomenon: LED does not show
Fault analysis: the models for PLC and text display development, according to customer response is wrong access 220V power failure, open the shell, 24+ has a fuse connecting fuse, capacitor C1, R3 static measurement without damage, check the filter L1 next, measurement has been burned, rectifier diode has been damaged by measuring. Power LM2576 IC measurement is also bad. Burn out components more maintenance to bring a lot of difficulty. After replacing the above components on the power is still not shown. Re measurement found that the voltage regulator IC 7805 is also short circuit. After the replacement of power on the normal display.
Failure repair: replace the power input part of the insurance, capacitance, resistance, IC, voltage regulator 7805 after the test is normal.
Can solve common faults of PLC integrated machine: display is not normal, the power indicator light is not bright, the output end of the output, the input can not control, error, the program is out of confusion, can not communicate, module no output, no input, etc.;
Jia Hong Wei repair service hotline: 0755-28916839, 13640994287 Shaw