Remedies For Warnings - Mitsubishi Electric MELSERVO-J3W Series Instruction Manual
General-purpose ac servo, sscnet interface 2-axis ac servo amplifier
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Also See for MELSERVO-J3W Series:
- Transition handbook (708 pages) ,
- Manual (500 pages) ,
- Handbook (590 pages)
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8. TROUBLESHOOTING
8.4 Remedies for warnings
CAUTION
When a warning whose stop method is all axis stop in the following table occurs, the servo amplifier goes into
the servo-off status and the servo motor stops at the warning occurrence.
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 MR Configurator to refer to a factor of warning
occurrence.
Warning No. 91
Warning description
Display
Name
91.1
Main circuit
device overheat
warning
91.2
Board
temperature
warning
If an absolute position counter warning (E3. ) occurred, always make home position
setting again. Not doing so may cause unexpected operation.
POINT
When any of the following alarms has occurred, do not resume operation by
switching power of the servo amplifier OFF/ON repeatedly. The servo amplifier and
servo motor may become faulty. If the power of the servo amplifier is switched
OFF/ON during the alarms, allow more than 30 minutes for cooling before
resuming operation.
Main circuit device overheat warning (91. )
Excessive regenerative warning (E0. )
Overload warning 1 (E1. )
Name: Main circuit device overheat warning
The temperature inside of the servo amplifier exceeds the warning level.
Cause
(1) The temperature inside of
the servo amplifier is
high.
(2) Specification of close
mounting is not met.
(1) The temperature inside of
the servo amplifier is
high.
(2) Specification of close
mounting is not met.
Stop method: Axes can operate (warning
detected at both axes)
Checkpoint
Check the surrounding air
Surrounding
temperature of the servo
temperature is high.
amplifier.
(over 55 )
Surrounding
temperature is low.
Check the specification of
Specification not met.
close mounting.
Examine checkpoints described in the alarm display "91.1".
8 - 29
Finding
Action
Lower the surrounding
air temperature.
Check (2).
Use according to the
specification.
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