Fanuc Power Mate i-D/H Maintenance Manual

7. TROUBLESHOOTING
B63175EN/03
440
Digital servo parameters are abnormal.
(Digital servo parameters are set incorrectly.)
When alarm 315 is occured at the same time, check the cause of alarm 351
of section 9.16.
1 Confirm the setting value of the following parameters:
PRM 2020 : Motor format number
PRM 2022 : Motor rotation direction
PRM 2023 : Number of pulses of velocity feedbacks
PRM 2024 : Number of pulses of position feedback
PRM 1023 : Servo axis number
PRM 2084 : Flexible feed gear ratio
PRM 2085 : Flexible feed gear ratio
Confirm the details with diagnosis function.
#7
0280
#6
AXS
#5 #4
DIR
#3
PLS
#2
PLC
#1 #0
MOT
MOT : The motor type specified in parameter No. 2020 falls outside the
predetermined range.
PLC : The number of velocity feedback pulses per motor revolution, specified in
parameter No. 2023, is zero or less. The value is invalid.
PLS : The number of position feedback pulses per motor revolution, specified in
parameter No. 2024, is zero or less. The value is invalid.
DIR : The wrong direction of rotation for the motor is specified in parameter No.
2022 (the value is other than 111 or 111).
AXS : In parameter No. 1023 (servo axis number), a value that falls outside the
range of 1 to the number of controlled axes is specified. (For example, 4 is
specified instead of 3.) Alternatively, the values specified in the
parameter are not consecutive.
2 Change the setting of this parameter to 0.
PRM 2047 : Observer parameter
3 Perform initial setting of digital servo parameters.
Refer to setcion 5.1 Initial Setting of Servo Parameters .
This data indicates the cause of servo alarm No. 417, detected by the NC.
If the alarm is detected by the servo, the PRM bit (bit 4 of DGN No. 0203)
is set to 1.
7.16
ALARM 417
(DIGITAL SERVO
SYSTEM IS
ABNORMAL)
D Causes

Leave a Reply

Your email address will not be published. Required fields are marked *