1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 105
Alarm No.: E2
Name: Servo motor overheat warning
Alarm content
[AL. 46.2 Abnormal temperature of servo motor 2] can occur.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
E2.1 Servo
motor
temperature
warning
(1) The temperature of the
linear servo motor or
direct drive motor
reached 85% of the
occurrence level of [AL.
46.2 Abnormal
temperature of servo
motor 2].
Check it with the check method for [AL. 46.2].
[A]
[B]
[WB]
[GF]
Alarm No.: E3
Name: Absolute position counter warning
Alarm content
The multi-revolution counter value of the absolute position encoder exceeded the maximum range.
Absolute position encoder pulses are faulty.
An update cycle is short for writing multi-revolution counter value of the absolute position encoder to EEP-
ROM.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
E3.1 Multi-revolution
counter travel
distance excess
warning
(1) The travel distance
from the home position
is 32768 rev or more in
the absolute position
system.
Check the value of
the multi-revolution
counter.
It is 32768 rev or
more.
Review operation
range. Execute the
home position return
again.
After the power is
surely cycled,
perform home
position return again.
[A]
[GF]
E3.2 Absolute
position counter
warning
(1) Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
It has a failure.
Take
countermeasures
against its cause.
After the power is
surely cycled,
perform home
position return again.
[A]
[B]
[WB]
[RJ010]
[GF]
It has no failure.
Check (2).
(2) An encoder is
malfunctioning.
Replace the servo
motor, and then check
the repeatability.
It is not repeatable.
Replace the servo
motor.
E3.4 Absolute
positioning
counter EEP-
ROM writing
frequency
warning
(1) A home position was
renewed (EEP-ROM
write) twice or more in
10 minutes in the servo
amplifier due to rotation
to the same direction in
short time in the point
table method of the
positioning mode,
degree setting with the
program method, or the
indexer method.
Check if the operation
was within the
following conditions
between the number
of gear teeth on
machine side ([Pr.
PA06] CMX) and
servo motor speed
(N).
When CMX
≤
2000,
N
<
3076.7 r/min
When CMX
>
2000,
N
<
3276.7 - (CMX
×
0.1) r/min
When (CMX/CDV)
is reduced to its
lowest terms,
CMX
≤
15900
The operation was
out of conditions.
Set the command
speed within the
conditions.
Set the number of
gear teeth on
machine side within
the conditions.
After the power is
surely cycled,
perform home
position return again.
[A]
[GF]
E3.5 Encoder
absolute
positioning
counter
warning
Check it with the check method for [AL. E3.2].
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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