Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 156

General-purpose ac servo, sscnet interface 2-axis ac servo amplifier
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8. TROUBLESHOOTING
Alarm No.33
Alarm description
Display
Name
33.1
Main circuit
voltage error
Name: Overvoltage
Bus voltage exceeds 400VDC.
Cause
(1)
Although the regenerative
option is used, the
parameter setting is
incorrect.
(2)
Lead of built-in
regenerative resistor or
regenerative option has
breakage or
disconnected.
(3) Check the status of
regenerative resistor
(regenerative option).
(4) Regeneration capacity
shortage.
(5) Power supply voltage is
high.
Stop method: All axes stop
Checkpoint
Check the parameter No.
Setting is incorrect.
PA02 setting.
Setting is correct.
Check the wiring and the
Has breakage or
lead of regenerative
disconnected.
resistor (regenerative
Normal.
option).
Check the resistance.
Regenerative resistor
(regenerative option)
is abnormal.
Normal.
Increase the deceleration
Not reproduced.
time constant, and check
the reproducibility of the
error.
Reproduced.
Check the input power
253VAC or more.
supply voltage.
8 - 17
Finding
Action
Correct the setting.
Check (2).
Connect properly.
Check (3).
When using built-in
regenerative resistor,
replace the servo
amplifier.
When using a
regenerative option,
replace the
regenerative option.
Check (4).
Use a regenerative
option if not being
used.
Check (5).
Make input voltage
smaller.

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