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16. INDEXER POSITIONING OPERATION
Display Name Definition Cause Action
1. Noise entered the encoder. Take noise suppression
measures.
AE3 Absolute position
counter warning
Absolute position
encoder pulses faulty.
2. Encoder faulty. Change the servo motor.
The multi-revolution
counter value of the
absolute position
encoder exceeded the
maximum revolution
range.
3. The movement amount from the home
position exceeded a 32767 rotation or
37268 rotation in succession.
Make home position setting
again.
The update cycle for
writing the multi-
revolution counter value
of the absolute position
encoder to EEPROM is
short.
Refer to POINT in section 16.7. Refer to POINT in section 16.7.
AE6 Servo forced stop
warning
EMG is off. External forced stop was made valid. (EMG
was turned off.)
Ensure safety and deactivate
forced stop.
Cooling fan life expiration (Refer to section
2.5.)
Change the cooling fan of the
servo amplifier.
AE8 Cooling fan
speed reduction
warning
The speed of the servo
amplifier decreased to or
below the warning level.
This warning is not
displayed with MR-J3-
70T/100T among servo
amplifiers equipped with
a cooling fan.
The power supply of the cooling fan is
broken.
Change the servo amplifier.
AE9 Main circuit off
warning
Servo-on (SON) was
switched on with main
circuit power off.
Switch on main circuit power.
AEC Overload warning
2
Operation, in which a
current exceeding the
rating flew intensively in
any of the U, V and W
phases of the servo
motor, was repeated.
During a stop, the status in which a current
flew intensively in any of the U, V and W
phases of the servo motor occurred
repeatedly, exceeding the warning level.
1. Reduce the positioning
frequency at the specific
positioning address.
2. Reduce the load.
3. Replace the servo amplifier/
servo motor with the one of
larger capacity.
AED Output watt
excess warning
The status, in which the
output wattage (speed
torque) of the servo
motor exceeded the
rated output, continued
steadily.
Continuous operation was performed with
the output wattage (speed
torque) of the
servo motor exceeding 150% of the rated
output.
1. Reduce the servo motor
speed.
2. Reduce the load.