Input Circuit Detection And Maintenance - Veichi AC310 Service Manual

+5V signal
2. Type of fault
Terminal input and output signals are not normal, signal command action is abnormal
3. Inspection Methods See Optocoupler and Triode Inspection Methods, and Inspection
Resistors for inspection methods.
4. Device Bit Number and Specification
3.3.1 X Input Circuit Detection and Maintenance
Short the +24V to the PLC, use the wire to short the COM and X1 terminals, check the
C-14 (as in Fig. 1). There is a corresponding signal on the display.
X2, X3, X4, X5, terminals are tested in the same way as X1.
Detect X1-X5 function abnormality, display problem, detect the corresponding signal
transmission optocoupler, and replace the faulty optocoupler.
Relay output circuit
AC310 Universal AC Drive Service Manual
Figu
re
1
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