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8. TROUBLESHOOTING
8.3 Remedies for warnings
POINT
When any of the following alarms has occurred, do not resume operation by
switching power of the driver OFF/ON repeatedly. The driver and servo motor
may become faulty. If the power of the driver is switched OFF/ON during the
alarms, allow more than 30 minutes for cooling before resuming operation.
Excessive regenerative warning (E0.1)
Driver overheat warning (91.1)
Overload warning 1 (E1. )
When the warning "Stop: Not stopped" described in the following table occurs, the servo-off occurs and the
servo motor stops. If any other warning occurs, operation can be continued but an alarm may take place or
proper operation may not be performed.
Remove the cause of warning according to this section. Use the software(MR Configurator2
TM
) to refer to a
factor of warning occurrence.
Alarm No.: A.90
Name: Home positioning incomplete warning
The servo motor stops.
Warning contents
Home position return is not performed correctly.
Detailed
display
Detailed
Name
Cause
Checking method
Result
Action
90.1
Home
position
return
incompletion
1) Positioning operation was
performed without home
position return.
Check if home position
return was performed.
Home position
return was not
performed.
Perform home position
return.
90.2
Home
position
return
abnormal
completion
1) Home position return
speed could not be
decreased to the creep
speed.
Check the home
position return speed,
the creep speed and
the travel distance after
proximity dog.
The set value is
incorrect.
Set correctly and perform
home position return.
2) The stroke end (LSP or
LSN) was actuated during
home position return
starting at other than
position beyond dog.
Check the home
position return speed,
the creep speed and
the travel distance after
proximity dog.
The Periapsis dog can
be detected.
The set value is
incorrect.
Set correctly and perform
home position return.
Alarm No.: A.91
Name: Driver overheat warning
The operation does not stop.
Warning contents
The temperature inside of the driver exceeds the warning level.
Detailed
display
Detailed
Name
Cause
Checking method
Result
Action
91.1
Driver inside
overheat
warning
1) The temperature in the
driver is high.
Check the ambient
temperature of the
driver.
Ambient
temperature is high.
(over 55
)
Lower the ambient
temperature.
Ambient
temperature is low.
Check 2).
2) Used beyond the
specifications of close
mounting.
Check the
specifications of close
mounting.
Used beyond the
specifications.
Use within the range of
specification.