3 TROUBLESHOOTING
3.3 Troubleshooting by Symptom
67
3
When a load momentarily turns on before the completion of the
initial processing
Check item
Action
Check whether output momentarily turns on in the following condition:
Depending on the capacity (C) between the drain and source of a MOSFET,
the load current may flow as shown in the figure below, and thus the load may
momentarily turn on before the completion of the initial processing of the
output module with diagnostic functions (before the RUN LED of the output
module with diagnostic functions turns on).
t1: Output turns on for approx. 200
s.
Use a load or device with the response speed of 1ms or longer.
TB1
TB16
TB17
TB18
Y0
t1
C
C
Internal
circuit
24VDC
Constant-voltage
circuit
Load
Load
Summary of Contents for MELSEC iQ-RX40NC6B
Page 1: ...MELSEC iQ R I O Module With Diagnostic Functions User s Manual Application RX40NC6B RY40PT5B ...
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Page 125: ...4 OVERVIEW 123 4 MEMO ...
Page 191: ...12 MAINTENANCE AND INSPECTION 189 12 MEMO ...
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