Alarms related to servo amplifiers
NC
alarm
No.
Message Description
430 n AXIS : SV. MOTOR OVER-
HEAT
A servo motor overheat occurred.
431 n AXIS : CNV. OVERLOAD 1) PSM: Overheat occurred.
2) β series SVU: Overheat occurred.
432 n AXIS : CNV. LOW VOLT
CONTROL
1) PSM: Control power voltage has
dropped.
2) PSMR: The control power supply voltage
has dropped.
3) β series SVU: The control power supply
voltage has dropped.
433 n AXIS : CNV. LOW VOLT DC
LINK
1) PSM: The DC link voltage has dropped.
2) PSMR: The DC link voltage has dropped.
3) α series SVU: The DC link voltage has
dropped.
4) β series SVU: The DC link voltage has
dropped.
434 n AXIS : INV. LOW VOLT
CONTROL
SVM: The control power supply voltage has
dropped.
435 n AXIS : INV. LOW VOLT DC
LINK
SVM: The DC link voltage has dropped.
436 n AXIS : SOFTTHERMAL
(OVC)
The digital servo software detected the soft
thermal state (OVC).
437 n AXIS : CNV. OVERCUR-
RENT POWER
PSM: Overcurrent flowed into the input cir-
cuit.
438 n AXIS : INV. ABNORMAL
CURRENT
1) SVM: The motor current is too high.
2) α series SVU: The motor current is too
high.
3) β series SVU: The motor current is too
high.
439 n AXIS : CNV. OVERVOLT
POWER
1) PSM: The DC link voltage is too high.
2) PSMR: The DC link voltage is too high.
3) α series SVU: The C link voltage is too
high.
4) β series SVU: The link voltage is too high.
440 n AXIS : CNV. EX DECEL-
ERATION POW.
1) PSMR: The regenerative discharge
amount is too large.
2) α series SVU: The regenerative dis-
charge amount is too large. Alternatively,
the regenerative discharge circuit is ab-
normal.
441 n AXIS : ABNORMAL CUR-
RENT OFFSET
The digital servo software detected an ab-
normality in the motor current detection cir-
cuit.
442 n AXIS : CNV. CHARGE
FAILURE
1) PSM: The spare discharge circuit of the
DC link is abnormal.
2) PSMR: The spare discharge circuit of the
DC link is abnormal.
G. FSSB START–UP PROCEDURE/
MATERIALS
GFKE-0222-EN
APPENDIX
988