
B-63944EN/02 APPENDIX G.ALARM LIST
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Number Message Description
SV0449 INV. IPM ALARM SVM : The IPM (Intelligent Power Module) detected an
alarm.
α series SVU : The IPM (Intelligent Power Module) detected
an alarm.
SV0453 SPC SOFT DISCONNECT ALARM Software disconnection alarm of the α Pulsecoder.
Turn off the power to the CNC, then remove and insert the
Pulsecoder cable. If this alarm is issued again, replace the
Pulsecoder.
SV0454 ILLEGAL ROTOR POS DETECT
磁極検出機能が異常終了しました。
モータが動かず、磁極位置検出が出来ませんでした。
SV0456 ILLEGAL CURRENT LOOP An attempt was made to set the current loop that could not
be set.
The amplifier pulse module in use does not comply with
HIGH SPEED HRV. Or, requirements to control are not
satisfied in the system.
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.
SV0460 FSSB DISCONNECT The FSSB connection was discontinued.
Probable causes are:
1. The FSSB connection cable was disconnected or broken.
2. The amplifier was turned off .
3. In the amplifier, the low-voltage alarm occurred.
SV0462 SEND CNC DATA FAILED The correct data could not be received on a slave side
because of the FSSB communication error.
SV0463 SEND SLAVE DATA FAILED The correct data could not be received in the servo software
because of the FSSB communication error.
SV0465 READ ID DATA FAILED A read of the ID information for the amplifier has failed at
power-on.
SV0466 MOTOR/AMP. COMBINATION The maximum current of an amplifier is different to that of a
motor.
Probable causes are:
1. The connection command for an amplifier is incorrect.
2. The parameter (No.2165) setting is incorrect
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.
SV0600 INV. DC LINK OVER CURRENT SVM : DC link overcurrent.
β SVU : DC link overcurrent.
SV0601 INV. RADIATOR FAN FAILURE SVM : Radiator cooling fan failure.
β SVU : Radiator cooling fan failure.
SV0602 INV. OVERHEAT SVM : The servo motor has overheated.
SV0603 INV. IPM ALARM(OH) SVM : The IPM (Intelligent Power Module) detected an
overheat alarm.
β SVU : The IPM (Intelligent Power Module) detected an
overheat alarm.
SV0604 AMP. COMMUNICATION ERROR The communication between SVM and PSM is in error.
SV0605 CNV. EX. DISCHARGE POW. PSMR : The motor regenerative power is too much.
SV0606 CNV. RADIATOR FAN FAILURE PSM : External radiator cooling fan failure.
PSMR : External radiator cooling fan failure.