Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 676

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 EEP-ROM is
short.
EMG is off.
External forced stop was enabled. (EMG
was turned off.)
The speed of the servo 1. Cooling fan life expiration (Refer to section
amplifier cooling fan
decreased to or below
the warning level. (This
2. The power supply of the cooling fan is
warning is not displayed
with MR-J3-70T/100T
among servo amplifiers
3. The cooling fan is clogged with foreign
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.
2.5.)
broken.
matter and the speed was decreased.
torque) of the
16 - 121
Action
Take measures against noise.
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.
Remove the foreign matter.
Switch on main circuit power.
1. Reduce the positioning
frequency.
2. Reduce the load.
3. Change the servo amplifier/
servo motor with the one of
larger capacity.
1. Reduce the servo motor
speed.
2. Reduce the load.
3. Change the servo
amplifier/servo motor with the
one of larger capacity.