
APPENDIX
B–63665EN/01
A. ALARM LIST
367
#7 #6 #5 #4 #3 #2 #1 #0
OFS
MCC LDA PMS204
PMS : A feedback pulse error has occured because the feedback cable
is defective.
LDA : The LED indicates that serial pulse coder C is defective
MCC : A magnetic contactor contact in the servo amplifier has
welded.
OFS : A current conversion error has occured in the digital servo.
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 Exceeded the n–th axis – side stored stroke limit III.
(Parameter No.1324)
505 OVER TRAVEL : –n 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.
510 OVER TRAVEL : +n A stroke limit check, made before starting movement, found that the end
point of a block falls within the plus (+) side inhibited area along the n–
axis defined by a stroke limit. Correct the program.
511 OVER TRAVEL : –n A stroke limit check, made before starting movement, found that the end
point of a block falls within the minus (–) side inhibited area along the
N–axis defined by a stroke limit. Correct the program.
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.