Alarm Display Table - Omron XTRADRIVE User Manual

XtraDrive User Manual
Symptom
Speed loop gain value
too high.
High rotation speed
overshoot on
starting
Speed loop gain is too
and stopping.
low compared to
position loop gain.
Ambient temperature
too high
Servomotor Servomotor surface
overheated dirty
Overloaded
Incorrect mechanical
mounting
Abnormal noise
Bearing defective
Machine causing
vibrations
Speed reference
Speed reference
0V but servomotor
voltage offset applied
rotates.
9.2.3.

Alarm Display Table

A summary of alarm displays and alarm code outputs is given in the
following table.
Alarm Alarm Code Output
Display ALO1 ALO2 ALO3
A.02
A.03
OFF OFF
A.04
A.05
ON OFF
A.10
A.30
ON ON
A.32
A.40 OFF OFF
* These alarms are not reset by the alarm reset signal (/ALM-RST). Eliminate the cause of the alarm and then turn
OFF the power supply to reset the alarms.
Note: OFF: Output transistor is OFF.
ON: Output transistor is ON.
**
This alarm display appears only within the range of 30W to 1kW.
Chapter 9: Inspection, Maintenance, and Troubleshooting
Cause Comment
Measure servomotor
ambient temperature.
Visual check
Run under no load.
Servomotor mounting
screws loose?
Coupling not centered?
Coupling unbalanced?
Check noise and
vibration near bearing.
Foreign object intrusion,
damage, or deformation
of sliding parts of
machine.
ALM
Alarm Name
Output
Parameter Breakdown
Main Circuit Encoder
Error
OFF OFF
Parameter Setting
Error*
Servomotor and
Amplifier
Combination Error
Overcurrent or Heat
OFF OFF Sink
Overheated
Regeneration Error
Detected
OFF OFF
Regenerative Overload
ON OFF Overvoltage
9-26
Reduce speed loop gain
(Pn100) preset value.
—
Increase integration time
constant (Pn101).
Increase the value of
parameter Pn100 (speed
— loop gain).
Reduce the integration time
constant (Pn101).
Reduce ambient temperature
to 40°C maximum.
Clean dust and oil from
motor surface.
Reduce load or replace with
larger capacity servomotor.
Tighten mounting screws.
Center coupling.
Balance coupling.
Consult your YET
representative if defective.
Consult with machine
manufacturer.
Adjust reference offset.
— Refer to sections 7.2.4 and
7.2.5
Description
EEPROM data of servo
*
amplifier is abnormal.
Detection data for power circuit
is abnormal.
The parameter setting is outside
the allowable setting range.
Servo amplifier and servomotor
capacities do no match each
other.
An overcurrent flowed through
the IGBT.
Heat sink of servo amplifier was
**
overheated.
•Regenerative circuit is faulty
•Regenerative resistor is faulty.
Regenerative energy exceeds
regenerative resistor capacity.
Main circuit DC voltage is
excessively high.
Solution