Mitsubishi Electric MELSERVO-J4 Instruction Manual page 52

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Alarm No.: 33 Name: Overvoltage
Alarm content
Detail
Detail name
No.
33.1 Main circuit (1) The setting of the
voltage error
(2) The regenerative
(3) Wire breakage of built-
(4) The regeneration
(5) Power supply voltage
(6) Something near the
The value of the bus voltage exceeded the prescribed value.
200 V class: 400 V DC
400 V class: 800 V DC
100 V class: 400 V DC
48 V DC setting: 75 V DC
24 V DC setting: 55 V DC
Cause
Check the
regenerative resistor regenerative resistor
(regenerative option) is (regenerative option)
incorrect. and [Pr. PA02] setting.
Check if the
resistor (regenerative regenerative resistor
option) is not (regenerative option)
connected. is connected correctly.
Measure the
in regenerative resistor resistance of the built-
or regenerative option in regenerative resistor
or regenerative option.
Set a longer
capacity is insufficient. deceleration time
constant, and then
check the
repeatability.
Check if the voltage of
high. the input power supply
is over the prescribed
value.
200 V class: 264 V AC
400 V class: 528 V AC
100 V class: 132 V AC
48 V DC setting: 75 V
DC
24 V DC setting: 55 V
DC
Check the noise,
device caused it. ambient temperature,
etc.
Check method Check result
The setting value is
incorrect.
It is set correctly.
It is not connected
correctly.
It is connected
correctly.
The resistance is
abnormal.
The resistance is
normal.
It is not repeatable.
It is repeatable.
It is higher than the
prescribed value.
It is at the
prescribed value or
lower.
It has a failure.
1 - 45
Action Target
Set it correctly. [A]
[B]
[WB]
Check (2).
[RJ010]
[GF]
Connect it correctly.
Check (3).
When using a built-in
regenerative resistor,
replace the servo
amplifier. When
using a regenerative
option, replace the
regenerative option.
Check (4).
When using a built-in
regenerative resistor,
use a regenerative
option. When using a
regenerative option,
use a larger capacity
one.
Check (5).
Reduce the power
supply voltage.
Check (6).
Take
countermeasures
against its cause.