11. Troubleshooting
11
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10
(10) Alarm No. 32 : POWER MODULE ERROR
[Details]
An excessive current flowed to the power component used in the spindle drive unit.
Investigation items
Investigation results
Remedy
The phenomenon occurred before
ready ON.
Replace the spindle drive unit.
1 Investigate the location
where the
phenomenon
occurred.
The phenomenon occurred after
servo ON.
Investigate item 2, and carry out the
appropriate measures.
The correct value is not set.
Set the correct value.
2 Check the spindle
parameter (SP034,
SP040, SP055, SP257
and after) setting
values.
The correct value is set.
Investigate item 3, and carry out the
appropriate measures.
The load amount is 120% or more.
Decrease the load amount.
3 If the alarm occurs
during cutting, check
the load amount.
The load amount is 119% or less.
Investigate item 4, and carry out the
appropriate measures.
4 Check the U, V, W
wiring between the
spindle drive unit and
motor.
1) Are the terminal
screws loose?
1) The terminal screws were loose.
Correctly tighten the screws.
2) Is there a
short-circuit in the
wiring between
phases?
2) There was a short-circuit.
Replace the cable.
3) There was a ground fault.
Replace the cable.
3) Is there a ground
fault in one of the
phases? When
checking items 2)
and 3), leave both
ends of the cable
open.
No particular problem.
Investigate item 5, and carry out the
appropriate measures.
The resistance value is 1M
Ω
or less. Replace the motor.
5 Check the motor
insulation. Carry out a
megger test between
each motor wire and
ground.
The resistance value is larger than
1M
Ω
.
Investigate item 6, and carry out the
appropriate measures.
The voltage sometimes becomes
170V or less during acceleration/
deceleration and during cutting.
Reconsider the power voltage.
6 Check the power
voltage.
The voltage is constantly 171V or
more.
Investigate item 7, and carry out the
appropriate measures.
Investigate the wiring
and installation
environment.
1) Is the unit correctly
grounded?
1) The grounding is incomplete.
Correctly ground the unit.
2) The alarm occurs easily when a
specific device is operated.
Execute noise countermeasures for
the device at the left.
7
2) Is there any device
that produces noise
around the unit?
No particular problem.
Replace the spindle drive unit.
