Mitsubishi Electric MELSERVO-JE MR-JE-100A, Инструкция по эксплуатации

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8. TROUBLESHOOTING
8 - 12
Alarm No.: 21 Name: Encoder normal communication error 2
Alarm content The encoder detected an error signal.
Display Detail name Cause Check method Check result Action
21.1 Encoder data
error 1
(1) It is not repeatable. Use the encoder with low
loop gain. The encoder detected a
high speed/acceleration
rate due to an oscillation
or other factors. Decrease the loop gain,
and then check the
repeatability.
It is repeatable. Check (2).
(2) It is not repeatable. Replace the servo motor. An encoder is
malfunctioning. Replace the servo motor,
and then check the
repeatability.
It is repeatable. Check (3).
(3) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc. It has a failure. Take countermeasures
against its cause.
21.2 (1) It is not repeatable. Replace the servo motor. Encoder data
update error An encoder is
malfunctioning. Replace the servo motor,
and then check the
repeatability.
It is repeatable. Check (2).
(2) Something near the
device caused it.
Check the noise,
ambient temperature,
etc. It has a failure. Take countermeasures
against its cause.
21.3 Encoder data
waveform error
Check it with the check method for [AL. 21.2].
21.5 Encoder
hardware error
1
Check it with the check method for [AL. 21.2].
21.6 Encoder
hardware error
2
21.9 Encoder data
error 2
Check it with the check method for [AL. 21.1].
Alarm No.: 24 Name: Main circuit error
Alarm content
A ground fault occurred on the servo motor power lines.
A ground fault occurred at the servo motor.
Display Detail name Cause Check method Check result Action
24.1 (1) The servo amplifier is
malfunctioning.
It occurs. Replace the servo
amplifier. Ground fault
detected by
hardware
detection circuit Disconnect the servo
motor power cables (U,
V, and W) and check if
the alarm occurs.
It does not occur. Check (2).
(2) It is shorted. Replace the servo motor
power cable. A ground fault or short
occurred at the servo
motor power cable. Check if only the servo
motor power cable is
shorted.
It is not shorted. Check (3).
(3) A ground fault occurred
at the servo motor.
It is shorted. Replace the servo motor. Disconnect the servo
motor power cables on
motor side, and check
insulation of the motor
(between U, V, W, and
).
It is not shorted. Check (4).
(4) They are in contact. Correct the wiring. The servo amplifier
power input cable and
servo motor power input
cable were shorted. Shut off the power, and
check if the servo
amplifier power input
cable and servo motor
power input cable are in
contact.
They are not in contact. Check (5).
(5) Something near the
device caused it.
Check the noise,
ambient temperature,
etc. It has a failure. Take countermeasures
against its cause.
24.2 Ground fault
detected by
software
detection
function
Check it with the check method for [AL. 24.1].