1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 44
Alarm No.: 32
Name: Overcurrent
Alarm content
A current higher than the permissible current was applied to the servo amplifier.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
32.1 Overcurrent
detected at
hardware
detection circuit
(during
operation)
(7) Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
It has a failure.
Take
countermeasures
against its cause.
[A]
[B]
[RJ010]
[GF]
It has no failure.
Check it with the
check method for
[AL. 45.1].
32.2 Overcurrent
detected at
software
detection
function (during
operation)
(1) The servo gain is high. Check if an oscillation
is occurring.
An oscillation is
occurring.
Reduce the speed
loop gain ([Pr.
PB09]).
For MR-J4-03A6(-
RJ) and MR-J4W2-
0303B6, check if the
main circuit power
supply voltage is 48
V DC even though
the setting is 24 V
DC.
[A]
[B]
[WB]
[RJ010]
[GF]
An oscillation is not
occurring.
Check (2).
(2) The servo amplifier is
malfunctioning.
Disconnect the servo
motor power cables
(U/V/W) and check if
the alarm occurs.
It occurs.
Replace the servo
amplifier.
It does not occur.
Check (3).
(3) A ground fault or short
occurred at the servo
motor power cable.
Check if only the
servo motor power
cable is shorted.
It is shorted.
Replace the servo
motor power cable.
It is not shorted.
Check (4).
(4) The servo motor is
malfunctioning.
Disconnect the servo
motor power cables
on motor side, and
check insulation of
the motor (between
U/V/W/ / ).
A ground fault is
occurring.
Replace the servo
motor.
A ground fault is not
occurring.
Check (5).
(5)
The
connection
destination of the
encoder cable is
incorrect.
Check the connection
destinations of CN2A,
CN2B, and CN2C.
It is not correct.
Connect it correctly. [WB]
It is correct.
Check (6).
(6) Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
It has a failure.
Take
countermeasures
against its cause.
[A]
[B]
[WB]
[RJ010]
[GF]
32.3 Overcurrent
detected at
hardware
detection circuit
(during a stop)
Check it with the check method for [AL. 32.1].
32.4 Overcurrent
detected at
software
detection
function (during
a stop)
Check it with the check method for [AL. 32.2].
Содержание MELSERVO MR-J4-B-RJ Series
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Страница 137: ...1 TROUBLESHOOTING FOR SERVO AMPLIFIER DRIVE UNIT 1 130 MEMO ...
Страница 145: ...2 TROUBLESHOOTING FOR MR CV_POWER REGENERATION CONVERTER UNIT 2 8 MEMO ...
Страница 155: ...3 TROUBLESHOOTING FOR MR CR55K 4 RESISTANCE REGENERATION CONVERTER UNIT 3 10 MEMO ...
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