MITSUBISHI ELECTRIC MR-E- A/AG - Manual (Page 162)

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10. TROUBLESHOOTING
10.2.3 Remedies for warnings
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 servo
configuration software to refer to the cause of warning.
Display Name Definition Cause Action
AL.E0 Excessive
regenerative
warning
There is a possibility that
regenerative power may
exceed permissible
regenerative power of
built-in regenerative
brake resistor or
regenerative brake
option. Regenerative power increased to 85% or
more of permissible regenerative power of
built-in regenerative brake resistor or
regenerative brake option.
Checking method
Call the status display and check
regenerative load ratio.
1. Reduce frequency of
positioning.
2. Change regenerative brake
option for the one with larger
capacity.
3. Reduce load.
AL.E1 Overload
warning
There is a possibility that
overload alarm 1 or 2
may occur. Load increased to 85% or more of overload
alarm 1 or 2 occurrence level.
Cause, checking method
Refer to AL.50,51.
Refer to AL.50, AL.51.
AL.E6 Servo emergency
stop warning
EMG-SG are open. External emergency stop was made valid.
(EMG-SG opened.) Ensure safety and deactivate
emergency stop.
AL.E9 Under voltage
warning
This alarm occurs when
the servo motor speed
decreases to or below
50r/min with the bus
voltage dropping. Review the power supply.