
APPENDIXA. ALARM LIST
B–63505EN/02
314
204 OFS MCC LDA PMS
#7 #6 #5 #4 #3 #2 #1 #0
OFS : A current conversion error has occured in the digital servo.
MCC : A magnetic contactor contact in the servo amplifier has welded.
LDA : The LED indicates that serial pulse coder C is defective.
PMS : A feedback pulse error has occured because the feedback cable is
defective.
(6) Over travel alarms
Number Message Contents
500 OVER TRAVEL : +n Exceeded the n–th axis + side stored stroke limit I.
(Parameter No.1320 or 1326 NOTE)
501 OVER TRAVEL : –n Exceeded the n–th axis – side stored stroke limit I.
(Parameter No.1321 or 1327 NOTE)
502 OVER TRAVEL : +n Exceeded the n–th axis + side stored stroke limit II.
(Parameter No.1322 )
503 OVER TRAVEL : –n Exceeded the n–th axis – side stored stroke limit II.
(Parameter No.1323)
504 OVER TRAVEL : +n
(T series)
Exceeded the n–th axis + side stored stroke limit III.
(Parameter No.1324 )
505 OVER TRAVEL : –n
(T series)
Exceeded the n–th axis – side stored stroke limit III.
(Parameter No.1325 )
506 OVER TRAVEL : +n Exceeded the n–th axis + side hardware OT.
507 OVER TRAVEL : –n Exceeded the n–th axis – side hardware OT.
NOTE
Parameters 1326 and 1327 are effective when EXLM(stroke limit switch signal) is on.
(7) Overheat alarms
Number Message Contents
700 OVERHEAT: CONTROL UNIT Control unit overheat
Check that the fan motor operates normally, and clean the air filter.
701 OVERHEAT: FAN MOTOR The fan motor on the top of the cabinet for the contorl unit is overheated.
Check the operation of the fan motor and replace the motor if necessary.
704 OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection
(1) If the cutting load is heavy, relieve the cutting condition.
(2) Check whether the cutting tool is share.
(3) Another possible cause is a faulty spindle amp.
(8) Rigid tapping alarms
Number Message Contents
740 RIGID TAP ALARM:
EXCESS ERROR
The positional deviation of the stopped spindle has exceeded the set
value during rigid tapping.
741 RIGID TAP ALARM:
EXCESS ERROR
The positional deviation of the moving spindle has exceeded the set val-
ue during rigid tapping.
742 RIGID TAP ALARM:
LSI OVERFLOW
An LSI overflow has occurred for the spindle during rigid tapping.