OMRON PLC repair
Model: CPM2A
Failure phenomenon: the power is not displayed
Fault analysis: the multimeter is used to measure the field effect of switching power supply K2717 pipe broken! Other parts are measured. There are no problems disconnects the load measuring voltage switch and burn. Again to switch, voltage regulator chip, optocoupler, have changed, the switch of the burning boot immediately if nothing more than the frequency is too low over-current damage, anti breakdown pressure is too high, but the reverse breakdown voltage of the power switch tube is relatively small, the flow is generally damaged, the focus of inspection to the base bias circuit of switching tube on. Measuring the oscillation voltage of the switching power supply in the off transformer. That is the switch transformer, remove that traces the strike. After the treatment of all the normal power.
Repair: the replacement of switches, optocoupler, zener diode, the transformer after all normal.
The OMRON SRM series, CP1H series, CPM1A series, CPM2A series, CQM1 series, C200H series, C200HS series, C200Ha series, C1000H series, C2000H series, C28P series, SP10 series; Jiahong Weike to solve common faults of OMRON PLC: the power indicator light does not shine, the output has no output, input control, report the program cannot wrong, confusion, communication etc.;
Jia Hong Wei repair service hotline: 0755-28916839, 13640994287 Shaw