1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 36
Alarm No.: 25
Name: Absolute position erased
Alarm content
The absolute position data is faulty.
Power was switched on for the first time in the absolute position detection system.
After the scale measurement encoder was set to the absolute position detection system, the power was
switched on for the first time.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
25.1 Servo
motor
encoder -
Absolute
position erased
(5) The
MR-BT6VCBL03M
junction battery cable is
not connected to the
encoder cable.
Check if the MR-
BT6VCBL03M
junction battery cable
is connected to the
encoder cable.
It is not connected.
Connect the MR-
BT6VCBL03M
junction battery cable
to the encoder cable.
[A]
[B]
[RJ010]
[GF]
It is connected.
Check (6).
(6) The battery voltage is
low. The battery is
consumed.
Check the battery
voltage with a tester.
When an MR-
BAT6V1BJ battery for
junction battery cable
was used, check the
voltage of the
connector (orange) for
servo amplifier.
It is less than 3 V
DC.
Replace the battery. [A]
[B]
[WB]
[RJ010]
[GF]
It is 3 V DC or more. Check (7).
(7) The voltage has
dropped greatly in the
encoder cable wired to
the battery.
Check if a
recommended cable is
used for the encoder
cable.
It is not used.
Use a
recommended wire.
It is used.
Check (8).
(8) A battery cable is
malfunctioning.
Check for the loose
connection with a
tester.
It has a failure.
Replace the battery
cable.
It has no failure.
Check (9).
(9) There is a loose
connection of the
encoder cable on the
servo motor side.
Check for the loose
connection with a
tester. Measure the
voltage on the servo
motor side.
It has a failure.
Repair or replace
the encoder cable.
It has no failure.
Check (10).
(10) The absolute position
storage unit was not
connected for using a
direct drive motor.
Check if the absolute
position storage unit is
connected correctly.
It is not connected.
Connect the absolute
position storage unit
correctly.
[A]
[B]
[WB]
[GF]
It is connected.
Check (11).
(11) The servo amplifier is
malfunctioning.
Replace the servo
amplifier, and then
check the
repeatability.
It is not repeatable.
Replace the servo
amplifier.
[A]
[B]
[WB]
[RJ010]
[GF]
It is repeatable.
Check (12).
(12) An encoder is
malfunctioning.
Replace the servo
motor, and then
check the
repeatability.
It is not repeatable.
Replace the servo
motor.
Содержание MELSERVO MR-J4-B-RJ Series
Страница 7: ...2 MEMO ...
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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