10.5 Inferring causes from conditions (abnormal output)
10-7
Troubleshooting
10.5 Inferring causes from conditions (abnormal output)
● No control output. No alarm output.
Possible cause Solution
Connections
Abnormal temperature measurement. See "10.3 Inferring causes from conditions
(abnormal measured values)" (P.10-4).
Incorrect load polarity or incorrect terminal
connections.
Wire correctly.
The connected load exceeds the output rating. • Do not exceed the rating.
• Repair in the event of a failure.
A load power supply is not connected to a transistor
output.
Use a power supply suitable for the output rating
and load.
The polarity of the load power supply connected to
the transistor output is incorrect.
Wire correctly.
Settings
Operation is stopped after the power is turned on. • Send the control start (run) command after
turning on the power.
• Set operation to continue at power-on.
Control has not been started. Send the control start (run) command.
The wrong channel is specified. Set the correct channel number.
The wrong SP is set. Set the correct SP.
The wrong bank No. is specified. Set the correct bank No.
When bank No. specification is by event input, input
ON or OFF is not held.
Hold the contact ON or OFF during specification.
When bank No. specification is by event input,
specification by communication was attempted.
The latest specification takes priority regardless of
the bank No. specification method.
The alarm mode is set to "0: No alarm". Set the correct alarm mode.
Alarm with wait sequence is specified. Specify an alarm without a wait sequence.
Deviation alarm is mistakenly set for absolute-value
alarm, or vice-versa.
Set the correct alarm mode.
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