
APPENDIX
B–64115EN/01
A. ALARM LIST
533
Number ContentsMessage
407 SERVO ALARM: EXCESS ERROR The following error occurred during simple synchronous control:
The difference in machine coordinates between the synchronized axes
exceeds the value set in parameter No. 8314.
409 SERVO ALARM: n AXIS TORQUE
ALM
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-
CESS ERROR
One of the following errors occurred:
1) The positional deviation value when the n–th axis stops exceeds the
value set in parameter No. 1829.
2) In simple synchronous control, the compensation amount for syn-
chronization exceeds the value set in parameter No. 8325.
This alarm is issued only for the slave axis.
411 SERVO ALARM: n–TH AXIS – EX-
CESS ERROR
The position deviation value when the n–th axis (axis 1–8) moves is
larger than the set value.
Refer to procedure of trouble shooting.
413 SERVO ALARM: n–th AXIS – LSI
OVERFLOW
The contents of the error register for the n–th axis (axis 1–8) exceeded
"2
31
power. This error usually occurs as the result of an improperly set
parameters.
415 SERVO ALARM: n–TH AXIS – EX-
CESS SHIFT
A speed higher than 524288000 units/s was attempted to be set in the
n–th axis (axis 1–8). This error occurs as the result of improperly set
CMR.
417 SERVO ALARM: n–TH AXIS – PA-
RAMETER INCORRECT
This alarm occurs when the n–th axis (axis 1–8) is in one of the condi-
tions listed below. (Digital servo system alarm)
1) The value set in Parameter No. 2020 (motor form) is out of the speci-
fied limit.
2) A proper value (111 or –111) is not set in parameter No.2022 (motor
revolution direction).
3) Illegal data (a value below 0, etc.) was set in parameter No. 2023
(number of speed feedback pulses per motor revolution).
4) Illegal data (a value below 0, etc.) was set in parameter No. 2024
(number of position feedback pulses per motor revolution).
5) Parameters No. 2084 and No. 2085 (flexible field gear rate) have not
been set.
6) A value outside the limit of {1 to the number of control axes} or a non–
continuous value (Parameter 1023 (servo axis number) contains a
value out of the range from 1 to the number of axes, or an isolated
value (for example, 4 not prceded by 3).was set in parameter No.
1023 (servo axisnumber).
7) A torque control parameter is set incorrectly in PMC axis control.
(The torque constant parameter is set to 0.)
420 SERVO ALARM: n AXIS SYNC
TORQUE
(M series)
During simple synchronous control, the difference between the torque
commands for the master and slave axes exceeded the value set in pa-
rameter No. 2031.
421 SERVO ALARM: n AXIS EXCESS
ER (D)
The difference between the errors in the semi–closed loop and closed
loop has become excessive during dual position feedback. Check the
values of the dual position conversion coefficients in parameters No.
2078 and 2079.
422 SERVO ALARM: n AXIS In torque control of PMC axis control, a specified allowable speed
has been exceeded.
423 SERVO ALARM: n AXIS In torque control of PMC axis control, the parameter–set allowable
cumulative travel distance has been exceeded.
430 n AXIS : SV. MOTOR OVERHEAT A servo motor overheat occurred.