Flow For Actions When The Output Module's Output Load Does Not Turn On - Mitsubishi Electric MELCEC Q Series User Manual

11. TROUBLESHOOTING

11.2.8 Flow for actions when the output module's output load does not turn on

The corrective action when the output load of the output module does not turn on during
operation is described.
The output load
does not turn on.
Is the output
module's operation
display on?
Is the
voltage of the
load power supply
included?
What is the
voltage of between
each output COM terminal
of the output
module?
Output module error.
Replace the output
module.
Confirm the rush current
when the maximum load
turn on simultaneously.
NO
Check the output status
with the peripheral device
in monitor mode.
YES
Is the operation
display of the input
Confirm that the input
NO
signal is off with the
peripheral device in
monitor mode.
YES
Check the wiring of the
0V
load power, and recover
the power.
The supplied
voltage value
is output.
Check the load wiring and
load, and recover.
Change the output relay
NG number to set the current
when the maximum load
turn on simultaneously
within specification.
OK
POINT
For problems when the input signal does not turn off and load does not turn off,
perform troubleshooting by referring to the fault examples for the I/O module in
Section 11.4.
NO
module on?
YES
Input
signal OFF
11 - 9
Measure the input to the
module and voltage
between COM terminals.
0V Supply
voltage
value
Check the external
wiring and external
input equipment.
Describe the problem to
the nearest service center,
retail store, or corporate
office, and obtain advice.