MITSUBISHI A series PLC maintenance
Model: CPU-S8 A1SJ
Breakdown phenomenon: and Fuji touch screen communication is not normal
Failure analysis: the PLC for the Taiwan extruder with PLC, and Fuji man-machine communication control. According to the fault phenomena by connecting the computer by cable and PLC communication port, communication test, found that most of the communication connection is successful, occasionally not communication, open the machine, with focus on communication chip IC was not found in 34051 of the appearance variation, measure the voltage of the chip supply voltage is DC5V feet, normal, IC chip the results of communication change, welding chip, chip below has been black, the chip has burned by the excessive current, after the replacement by computer by cable testing, all communication is successful, no longer appear to deliver customer after fault.
Failure repair: replacement of the communication chip IC after the normal communication.
MITSUBISHI PLC maintenance FX series, FX1S, FX1N, FX2N, FX3U, A/Q series, etc.. Common faults, such as no power, communication failure, I/O board fault, expansion module failure, the program can not repair the fault fault.
Jia Hong Wei repair service hotline: 0755-28916839, 13640994287 Shaw