Mutchus

Here we are going to discuss about the Problems in contactors & their solution. Problems: 1) Over heating of main contact path 2)Overheating of coil 3)Noisy Magnets 4)Failure to pick up & seal 5)Failure to drop out 6)Excessive pitting and welding of contacts ...

A. Unable to start. Can be caused by: No start-up voltage supply Vcc or a voltage less than 16V Electrolityc Capacitors supply voltage Vcc filter dry.    2. Led indicator blinking If the supply voltage Vcc examined rocking. This is because the regulator of life and death because OVLO work., Die-protectionist regulators and auto start life over and over. If it is turned off Electrolityc Capacitors  usually still keep the rest of the cargo. Can be caused by: Electrolityc Capacitors supply voltage Vcc filter on a pin-4 dry. Replace with a value equal to or slightly larger. - triger UVLO input filter capacitor on pin-1 feed dry behind the declining value - triger OLP Rectifier diode of the switching transformer is damaged (sometimes when examined with avo-meter looks like a still good) cause the supply voltage Vcc drops of the switching transformer (UVLO) Part damage or broken lines on the feedback circuit of the voltage regulator through B to photoco...

PLC Fault Finding & Troubleshooting Procedures  The following tables list some PLC Fault Finding common problems and troubleshooting procedures for the PLC systemin the event of faulty operation.   PLC Fault Finding and Troubleshooting System Operation Symptom Troubleshooting and Corrective Actions for PLC system PLC Fault Finding & Troubleshooting Procedures Corrective Actions for PLC system All LEDs are OFF   1 . Check the power supply wiring. 2 . Check If the power supplied to the PLC control units is in the range of the rating. 3 . Be sure to check the fluctuation in the power supply. 4 . Disconnect the power supply wiring to the other devices if the powersupplied to the PLC control unit is shared with them.If the LEDs on the PLC control unit turn ON at this moment, the capacity of the power supply is not enough to control other devices as well. Prepare another power supply for other devices or increase the capacity of the power supply. 5 . ...