Mitsubishi Electric MELSERVO-J3 Series Manual page 632

16. INDEXER POSITIONING OPERATION
Display Name
AE3 Absolute position
counter warning
AE6 Servo forced stop
warning
AE8 Cooling fan
speed reduction
warning
AE9 Main circuit off
warning
AEC Overload warning
2
AED Output watt
excess warning
Definition
Absolute position 1. Noise entered the encoder.
encoder pulses faulty.
2. Encoder faulty.
The multi-revolution 3. The movement amount from the home
counter value of the
absolute position
encoder exceeded the
maximum revolution
range.
The update cycle for Refer to POINT in section 16.7.
writing the multi-
revolution counter value
of the absolute position
encoder to EEPROM is
short.
EMG is off. External forced stop was made valid. (EMG
was turned off.)
The speed of the servo Cooling fan life expiration (Refer to section
amplifier decreased to or 2.5.)
below the warning level.
This warning is not
displayed with MR-J3-
The power supply of the cooling fan is
70T/100T among servo
broken.
amplifiers equipped with
a cooling fan.
Servo-on (SON) was
switched on with main
circuit power off.
Operation, in which a During a stop, the status in which a current
current exceeding the flew intensively in any of the U, V and W
rating flew intensively in phases of the servo motor occurred
any of the U, V and W repeatedly, exceeding the warning level.
phases of the servo
motor, was repeated.
The status, in which the Continuous operation was performed with
output wattage (speed the output wattage (speed
torque) of the servo servo motor exceeding 150% of the rated
motor exceeded the output.
rated output, continued
steadily.
Cause
position exceeded a 32767 rotation or
37268 rotation in succession.
torque) of the
16 - 111
Action
Take noise suppression
measures.
Change the servo motor.
Make home position setting
again.
Refer to POINT in section 16.7.
Ensure safety and deactivate
forced stop.
Change the cooling fan of the
servo amplifier.
Change the servo amplifier.
Switch on main circuit power.
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.
1. Reduce the servo motor
speed.
2. Reduce the load.