FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

APPENDIX
G. ALARM LIST
B–62754EN/01
766
4) Serial pulse coder (SPC) alarms
When either of the following alarms is issued, a possible cause is a faulty serial pulse coder or cable.
Number Message Contents
350 SPC ALARM: n AXIS PULSE COD-
ER
The n axis (axis 1–8) pulse coder has a fault. Refer to diagnosis dis-
play No. 202 for details.
351 SPC ALARM: n AXIS COMMUNICA-
TION
n axis (axis 1–8) serial pulse coder communication error (data trans-
mission fault) Refer to diagnosis display No. 203 for details.
The details of serial pulse coder alarm No. 350 (pulse coder alarm) are
displayed in the diagnosis display (No. 202) as shown below.
#7 #6 #5 #4 #3 #2 #1 #0
CSA
BLA PHA RCA BZA CKA SPH202
CSA : The serial pulse coder is defective. Replace it.
BLA : The battery voltage is low. Replace the batteries. This alarm has
nothing to do with alarm 350 (serial pulse coder alarm).
PHA : The serial pulse coder or feedback cable is defective. Replace the
serial pulse coder or cable.
RCA: The serial pulse coder is defective. Replace it.
BZA : The pulse coder was supplied with power for the first time.
Make sure that the batteries are connected.
Turn the power off, then turn it on again and perform a reference
position return. This alarm has nothing to do with alarm 350
(serial pulse coder alarm).
CKA: The serial pulse coder is defective. Replace it.
SPH : The serial pulse coder or feedback cable is defective. Replace the
serial pulse coder or cable.
The details of serial pulse coder alarm No. 351 (communication alarm)
are displayed in the diagnosis display (No. 203) as shown below.
#7 #6 #5 #4 #3 #2 #1 #0
DTE
CRC
STB PRM203
DTE : The serial pulse coder encountered a communication error.
The pulse coder, feedback cable, or feedback receiver circuit is
defective. Replace the pulse coder, feedback cable, or NC–axis
board
CRC: The serial pulse coder encountered a communication error.
The pulse coder, feedback cable, or feedback receiver circuit is
defective. Replace the pulse coder, feedback cable, or NC–axis
board.
STB : The serial pulse coder encountered a communication error.
The pulse coder, feedback cable, or feedback receiver circuit is
defective.
Replace the pulse coder, feedback cable, or NC–axis board.
PRM: An invalid parameter was found. Alarm 417 (invalid servo
parameter) is also issued.
D The details of serial
pulse coder alarm
No.350
D The details of serial
pulse coder alarm
No.351

Leave a Reply

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