12
TROUBLESHOOTING
12.2 Troubleshooting
12.2.14 Flowchart for when output load of output module does not turn on
12 - 19
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12.2.14 Flowchart for when output load of output module does not turn on
The following shows the flowchart for when the output load of the output module does not
turn on during programmable controller operation.
POINT
For the troublet in which input signal to the input module does not turn off,
troubleshoot referring to Section 12.5 Examples of I/O Modules Troubleshooting.
Diagram 12.11 Flowchart for when output load of output module does not turn on
Output module failure
Replace the output module.
Set the GX Developer in the
monitor mode and check that the
input signal is OFF.
Check the power supply load
wire and recover the power
supply.
Check the load wire and load, and
recover the power supply.
Check the external wiring and
external input devices.
Check output conditions with the
monitor mode of the GX
Developer.
Voltage measurement among
the modules input and COM
terminals.
(Monitor signal off)
Is voltage for the
power supply load
added?
The rated voltage
is supplied.
Change the output relay number and
let the load maximum simultaneous
on current to within the specification.
0V
NO
NO
0V
Off
On
OK
NG
YES
YES
Is the operation
indicator of output module
turned on?
What is the voltage
among the various
output COM terminals of the
output module?
Is the operation
indicator of input
module turned on?
Please consult your local Mitsubishi
service center or representative,
explaining a detailed description of
the problem.
Supply
voltage
value
The output load has not turned on.
Confirm rush current that flows to the
load when the maximum number of
outputs turns on simultaneously.