APPENDIXG. ALARM LIST
#3 #2 #1 #0
#7 (DTE) : Data error has occurred.
#6 (CRC) : CRC error has occurred.
#5 (STB) : Stop bit error has occurred.
#4 (PRM) : Parameter error alarm has occurred. In this case, a servo parameter error
alarm (No. 417) is also output.
5) Servo alarms
Number Message Contents
400 SERVO ALARM: n–TH AXIS OVER-
The n–th axis (axis 1 to 8) overload signal is on. Refer to diagnosis dis-
play No. 201 for details.
401 SERVO ALARM: n–TH AXIS VRDY
The n–th axis (axis 1 to 8) servo amplifier READY signal (DRDY) went
402 SERVO ALARM: SV CARD NOT EX-
The axis control card is not provided.
403 SERVO ALARM: CARD/SOFT MIS-
The combination of the axis control card and servo software is illegal.
The possible causes are as follows:
· A correct axis control card is not provided.
· Correct servo software is not installed on flash memory.
404 SERVO ALARM: n–TH AXIS VRDY
Even though the n–th axis (axis 1 to 8) READY signal (MCON) went off,
the servo amplifier READY signal (DRDY) is still on. Or, when the power
was turned on, DRDY went on even though MCON was off.
Check that the servo interface module and servo amp are connected.
405 SERVO ALARM: (ZERO POINT RE-
Position control system fault. Due to an NC or servo system fault in the
reference position return, there is the possibility that reference position
return could not be executed correctly. Try again from the manual refer-
ence position return.
407 SERVO ALARM: EXCESS ERROR The following failure has occurred during easy synchronization control
1) The position deviation of the synchronization axis has exceeded
the value specified by the parameter (No. 8314).
409 SERVO ALARM: n AXIS TORQUE
Abnormal servo motor load has been detected. Alternatively, abnormal
spindle motor load has been detected in Cs mode.
410 SERVO ALARM: n–TH AXIS – EX-
One of the following failures has occurred.
1) The position deviation when n–th axis stops has exceeded the value
specified by the parameter (No. 1829).
2) Under easy synchronization control, the maximum compensation
during synchronization has exceeded the value specified by the
parameter (No. 8325). This alarm is issued only for the slave axis.
411 SERVO ALARM: n–TH AXIS – EX-
The position deviation value when the n–th axis (axis 1 to 8) moves is
larger than the set value.
Note) Limit value must be set to parameter No.1828 for each axis.
413 SERVO ALARM: n–th AXIS – LSI
The contents of the error register for the n–th axis (axis 1 to 8) are be-
yond the range of –2
. This error usually occurs as the result of
an improperly set parameters.
415 SERVO ALARM: n–TH AXIS – EX-
A speed higher than 524288000 units/s was attempted to be set in the
n–th axis (axis 1 to 8). This error occurs as the result of improperly set
416 SERVO ALARM: n–TH AXIS – DIS-
Position detection system fault in the n–th axis (axis 1 to 8) pulse coder
(disconnection alarm). Refer to diagnosis display No. 201 for details.