Mitsubishi Electric MELSERVO-J4 MR-J4 TM Instruction Manual page 263

8. TROUBLESHOOTING
8.5 Remedies for warnings
CAUTION
If [AL. E6] or [AL. E9] occurs, the amplifier will be the servo-off status. If any other warning occurs, operation
can be continued but an alarm may occur and proper operation may not be performed.
Refer to this section and remedies for warnings of the MR-J4-_A_ and MR-J4-_B_ in "MELSERVO-J4 Servo
Amplifier Instruction Manual (Troubleshooting)" to remove the cause of the warning. Use MR Configurator2
to refer to the cause of warning occurrence.
Alarm No.: F4 Name: Positioning warning
Alarm content
Detail
Detail name
No.
F4.4 Target position (1) The target position was
setting range
error warning
F4.6 Acceleration (1) The acceleration time
time constant
setting range
error warning
F4.7 Deceleration (1) The deceleration time
time constant
setting range
error warning
If [AL. E3 Absolute position counter warning] occurs, always make the home
position setting again. Otherwise, it may cause an unexpected operation.
POINT
This section explains remedies for warnings exclusively for the MR-J4-_TM_.
Refer to the descriptions of MR-J4-_A_ and MR-J4-_B_ in "MELSERVO-J4
Servo Amplifier Instruction Manual (Troubleshooting)" for remedies for any other
warnings.
When any of the following warnings occurs, do not cycle the power of the servo
amplifier repeatedly to restart. Doing so will cause a malfunction of the servo
amplifier and servo motor. If the power of the servo amplifier is switched off/on
during the warnings, allow more than 30 minutes for cooling before resuming
operation.
[AL. 91 Servo amplifier overheat warning]
[AL. E0 Excessive regeneration warning]
[AL.E1 Overload warning 1]
[AL. E2 Servo motor overheat warning]
[AL.EC Overload warning 2]
Warnings (except [AL. F0 Tough drive warning]) are not recorded in the alarm
history.
The operation setting was set out of range.
Cause
Check the setting
set out of range. value of the target
position.
Check the setting
constant was set out of value of the
range. acceleration time
constant.
Check the setting
constant was set out of value of the target
range. position.
Check method Check result
It is out of setting
range.
It is out of setting
range.
It is out of setting
range.
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Action Target
Set a value within [TM]
the setting range
and release the
warning (C_ORST
on).
Set a value within
the setting range
and release the
warning (C_ORST
on).
Set a value within
the setting range
and release the
warning (C_ORST
on).