Output Errors - Omron E5ZE Operation Manual

Output Errors

Hunting
Probable cause
Operation
Heat capacity of a heater controlling the
temperature of an object is too large for the
object.
Heat capacity of a controlled object changes due
to periodical external disturbances.
E5ZE is executing auto-tuning.
4-5 Output Errors
Control Output or Alarm Output Does Not Turn ON
Probable cause
Connections
Process value of the E5ZE is abnormal.
Polarity of the load or connected terminals are
wired incorrectly.
Connectors are not connected to the correct
terminal blocks.
Load exceeding the output ratings of the E5ZE is
connected.
Load power supply is not connected to alarm
output or cooling control output.
Polarity of the load power supply for alarm output
or cooling control output is incorrect.
Power is not being supplied to the
wiring-reduction device.
The wiring-reduction device is not connected to
the E5ZE using Connecting Cable.
For troubleshooting problems with connections and settings, refer to the same
probable causes and remedies as provided for overshooting and undershoot-
ing.
Remedy
Use a heater with a heat capacity suited to the
object.
Take appropriate measures to prevent the
periodical external disturbances.
Hunting will not occur if auto-tuning is completed.
Remedy
Refer to 4-3 Temperature Sensing Errors for
appropriate troubleshooting.
• Correct the wiring.
• Connect the connectors correctly.
• Connect a load that does not exceed the output
ratings to the E5ZE.
• Request repair of the E5ZE if it is
malfunctioning.
Provide a power supply satisfying the output
ratings of the E5ZE and suitable for the load.
Correct the wiring.
Supply power required to satisfy the ratings of the
device.
Use the Connecting Cable specified in 2-6 Wiring
CT Inputs and Control/Alarm Outputs.
Section 4-5
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