Remedies For Warnings - Mitsubishi Electric EZMOTION MR-E Super MR-E-10A-QW003 Instruction Manual

10. TROUBLESHOOTING

10.2.3 Remedies for warnings

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If AL.E6 occurs, the servo off status is established. If any other warning occurs, operation can be continued but
an alarm may take place or proper operation may not be performed. Use the optional MR Configurator (servo
configuration software) to refer to the cause of the warning.
Display Name
AL.E0 Excessive
regenerative
warning
AL.E1 Overload warning There is a possibility that
AL.E6 Servo emergency
stop warning
AL.E9 Undervoltage
warning
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.
Excessive regenerative warning (AL.E0)
Overload warning 1 (AL.E1)
Definition
There is a possibility that Regenerative power increased to 85
regenerative power may more of permissible regenerative power of
exceed permissible built-in regenerative resistor or regenerative
regenerative power of option.
built-in regenerative
resistor or regenerative
option.
Load increased to 85
overload alarm 1 or 2 may alarm 1 or 2 occurrence level.
occur.
EMG-VIN are open. External emergency stop was made valid.
(EMG-VIN opened.)
This alarm occurs when
the servo motor speed
decreases to or below
50r/min with the bus
voltage dropping.
Cause
Checking method
Call the status display and check
regenerative load ratio.
or more of overload
Cause, checking method
Refer to AL.50, 51.
10 - 11
Action
or 1. Reduce frequency of
positioning.
2. Change regenerative option for
the one with larger capacity.
3. Reduce load.
Refer to AL.50, AL.51.
Ensure safety and deactivate
emergency stop.
Check the power supply.