Справочник Пользователя для Mitsubishi Electronics MR-E- A/AG

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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.