
APPENDIX
B–63325EN/03
B. ALARM LIST
471
Number ContentsMessage
SV0434 LOW VOLT CONTROL SVM: Low control power voltage
SV0435 INV. LOW VOLT DC LINK SVM: Low DC link voltage
SV0436 SOFTTHERMAL (OVC) The digital servo software detected a software thermal (OVC).
SV0437 CNV. OVERCURRENT POWER PSM: Overcurrent on input circuit section.
SV0438 INV. ABNORMAL CURRENT SVM: Motor overcurrent
A series SVU: Motor overcurrent
B series SVU: Motor overcurrent
SV0439 CNV. OVERVOLT POWER PSM: DC link overvoltage
PSMR: DC link overvoltage
A series SVU: DC link overvoltage
B series SVU: DC link overvoltage
SV0440 CNV. EX DECELERATION POW. PSMR: Excessive generative discharge
A series SVU: Excessive generative discharge, or abnormal error in
generative power circuit
SV0441 ABNORMAL CURRENT OFFSET The digital servo software detected an abnormality in the motor current
detection circuit.
SV0442 CNV. CHARGE FAULT/INV. DB PSM: Abnormality in DC link reserve charging circuit
PSMR: Abnormality in DC link reserve charging circuit
A series SVU: Abnormality in dynamic brake circuit
SV0443 CNV. COOLING FAN FAILURE PSM: Internal cooling fan failure.
PSMR: Internal cooling fan failure
B series SVU: Internal cooling fan failure
SV0444 INV. COOLING FAN FAILURE SVM: Internal cooling fan failure
SV0445 SOFT DISCONNECT ALARM The digital servo software detected a disconnected pulse coder.
SV0446 HARD DISCONNECT ALARM The hardware detected a disconnected built–in pulse coder.
SV0447 HARD DISCONNECT (EXT) The hardware detected a disconnected standalone detector.
SV0448 UNMATCHED FEEDBACK ALARM The sign of the feedback signal from the standalone detector is opposite
to that from the feedback signal from the built–on pulse coder.
SV0449 INV. IPM ALARM SVM: The IPM (Intelligent Power Module) detected an alarm.
A series SVU: The IPM (Intelligent Power Module) detected an alarm.
SV0455 SERVO SOFTWARE NOT FOUND The specified servo program cannot be found.
The setting of parameter No. 1043 is not correct, or the servo program
does not exist.
SV0456 ILLEGAL CURRENT LOOP The specified current loop is illegal. The system does safisfy the
requirements for performing HIGH SPEED HRV control.
SV0457 ILLEGAL HI HRV (250US) An attempt was made to set up HIGH SPEED HRV control for use when
the current loop was set to 250 us.
SV0458 CURRENT LOOP ERROR The specified current loop differs from the actual current loop.
SV0459 HI HRV SETTING ERROR For two axes whose servo axis numbers (parameter No. 1023) are
consecutively even and odd numbers, HIGH SPEED HRV control is
possible for one axis and impossible for the other.
SV0468 HI HRV SETTING ERROR(AMP) An attempt was made to set up HIGH SPEED HRV control for use when
the controlled axis of an amplifier for which HIGH SPEED HRV control
could not be used.