1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 20
Alarm No.: 11
Name: Switch setting error
Alarm content
The setting of the axis selection rotary switch or auxiliary axis number setting switch is incorrect.
The setting of the disabling control axis switch is incorrect.
The setting of the station number selection rotary switch is incorrect.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
11.1 Axis
number
setting error
(1) The setting of the axis
No. is incorrect.
Check the settings of
the auxiliary axis
number setting
switches (SW2-
5/SW2-6) and axis
selection rotary switch
(SW1).
When both of the
auxiliary axis
number setting
switches are on,
check the axis
selection rotary
switch if "F" is
selected for MR-
J4W2, ("E" or "F" is
selected for MR-
J4W3).
Set the axis No.
correctly.
[WB]
Both of the auxiliary
axis number setting
switches are off.
Replace the servo
amplifier.
Station
number
setting error
(2) The station number is
set to a value other
than "1" to "120" with
the station number
selection rotary switch.
Check the settings of
the station number
selection rotary
switches (SW2/SW3).
The setting of the
station number
selection rotary
switch is set to "0"
or "121" or more.
Set the station
number correctly.
[GF]
The station number
is set to a value from
"1" to "120" with the
station number
selection rotary
switch.
Replace the servo
amplifier.
11.2 Disabling
control axis
setting error
(1) The setting of the
disabling control axis
switch is incorrect.
Check the setting of
the disabling control
axis switch.
Check if the setting
is as follows.
1) Only A-axis is
disabled.
2) Only B-axis is
disabled.
3) A-axis and B-axis
are disabled.
4) A-axis and C-axis
are disabled.
5) All axes are
disabled.
Set it correctly.
[WB]
The setting is other
than above.
Replace the servo
amplifier.
Alarm No.: 12
Name: Memory error 1 (RAM)
Alarm content
A part (RAM) in the servo amplifier is failure.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
12.1 RAM error 1
(1) A part in the servo
amplifier is failure.
Disconnect the cables
except for the control
circuit power supply,
and then check the
repeatability.
It is repeatable.
Replace the servo
amplifier.
[A]
[B]
[WB]
[RJ010]
[GF]
It is not repeatable.
Check (2).
(2) Something near the
device caused it.
Check the power
supply for noise.
It has a failure.
Take
countermeasures
against its cause.
12.2 RAM error 2
Check it with the check method for [AL. 12.1].
12.3 RAM error 3
12.4 RAM error 4
12.5 RAM error 5
12.6 RAM error 6
Summary of Contents for MELSERVO MR-J4-B-RJ Series
Page 7: ...2 MEMO ...
Page 137: ...1 TROUBLESHOOTING FOR SERVO AMPLIFIER DRIVE UNIT 1 130 MEMO ...
Page 145: ...2 TROUBLESHOOTING FOR MR CV_POWER REGENERATION CONVERTER UNIT 2 8 MEMO ...
Page 155: ...3 TROUBLESHOOTING FOR MR CR55K 4 RESISTANCE REGENERATION CONVERTER UNIT 3 10 MEMO ...
Page 171: ...MEMO ...
