IDEC FC4A-C10R2 User Manual page 491

Troubleshooting Diagram 4
Input does not operate normally.
Is the input LED on?
Is the input wiring correct?
YES
Is the input terminal
powered correctly?
Supply the rated voltage to the
input terminal.
Are wiring and
operation of external
devices correct?
Call IDEC for assistance.
YES
NO
NO
YES
NO
Input voltage range
All-in-one CPU, input, mixed I/O modules: 20.4 to 28.8V DC
Slim type CPU modules:
AC input module:
NO
YES
« FC4A M
ICRO
Correct the input
wiring.
20.4 to 26.4V DC
85 to 132V AC
Correct the external
device wiring.
S U ' M »
MART SER S ANUAL
29: T
ROUBLESHOOTING
Are input allocation
numbers correct?
NO
Correct the program.
END
YES
29-11