
8. TROUBLESHOOTING
B–63835EN/03
522
Number ContentsMessage
460 n AXIS : FSSB DISCONNECT FSSB communication was disconnected suddenly. The possible
causes are as follows:
1) The FSSB communication cable was disconnected or broken.
2) The power to the amplifier was turned off suddenly.
3) A low–voltage alarm was issued by the amplifier.
461 n AXIS : ILLEGAL AMP INTERFACE The axes of the 2–axis amplifier were assigned to the fast type inter-
face.
462 n AXIS : SEND CNC DATA FAILED Because of an FSSB communication error, a slave could not receive
correct data.
463 n AXIS : SEND SLAVE DATA
FAILED
Because of an FSSB communication error, the servo system could
not receive correct data.
464 n AXIS : WRITE ID DATA FAILED An attempt was made to write maintenance information on the ampli-
fier maintenance screen, but it failed.
465 n AXIS : READ ID DATA FAILED At power–up, amplifier initial ID information could not be read.
466 n AXIS : MOTOR/AMP COMBINA-
TION
The maximum current rating for the amplifier does not match that for
the motor.
467 n AXIS : ILLEGAL SETTING OF
AXIS
The servo function for the following has not been enabled when an
axis occupying a single DSP (corresponding to two ordinary axes) is
specified on the axis setting screen.
1. Learning control (bit 5 of parameter No. 2008 = 1)
2. High–speed current loop (bit 0 of parameter No. 2004 = 1)
3. High–speed interface axis (bit 4 of parameter No. 2005 = 1)
468 HI HRV SETTING ERROR (AMP) Use of high–speed HRV is specified for a controlled axis of an ampli-
fier which does not support high–speed HRV.
600 n AXIS : INV. DC LINK OVER CUR-
RENT
DC link current is too large.
601 n AXIS : INV. RADIATOR FAN FAIL-
URE
The external dissipator stirring fan failed.
602 n AXIS : INV. OVERHEAT The servo amplifier was overheated.
603 n AXIS : INV. IPM ALARM (OH) The IPM (intelligent power module) detected an overheat alarm.
604 n AXIS : AMP. COMMUNICATION
ERROR
Communication between the SVM and the PSM failed.
605 n AXIS : CNV. EX. DISCHARGE
POW.
PSMR: Regenerative power is too large.
606 n AXIS : CNV. RADIATOR FAN FAIL-
URE
PSM: The external dissipator stirring fan failed.
PSMR: The external dissipator stirring fan failed.
607 n AXIS : CNV. SINGLE PHASE FAIL-
URE
PSM: Input voltage is in the open–phase condition.
PSMR: Input voltage is in the open–phase condition.
If the hardware on the CNC is suspected to be defective as a result of
examination, replace the axis control cards.