Remedies For Warnings - Mitsubishi Electric MR-E A Series Instruction Manual

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
AL.E0 Excessive
regenerative
warning
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AL.E1 Overload
warning
AL.E6 Servo emergency
stop warning
AL.E9 Under voltage
warning
Definition
There is a possibility that Regenerative power increased to 85% or
regenerative power may more of permissible regenerative power of
exceed permissible built-in regenerative brake resistor or
regenerative power of regenerative brake option.
built-in regenerative
brake resistor or
regenerative brake
option.
There is a possibility that Load increased to 85% or more of overload
overload alarm 1 or 2 alarm 1 or 2 occurrence level.
may occur.
EMG-SG are open. External emergency stop was made valid.
(EMG-SG 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.
Cause, checking method
Refer to AL.50,51.
10 - 11
Action
1. Reduce frequency of
positioning.
2. Change regenerative brake
option for the one with larger
capacity.
3. Reduce load.
Refer to AL.50, AL.51.
Ensure safety and deactivate
emergency stop.
Review the power supply.