
7. TROUBLESHOOTING
B–63445EN/01
158
An error is generated in the control section of the serial pulse coder.
1 Alarm No. 351 has also generated⇒Refer to alarm 351.
2 Only alarm No. 350 has generated⇒Refer to the following
Confirm
the details by diagnostic number 0202 and 0204.
#7 #6 #5 #4 #3 #2 #1 #0
0202 CSA PHA RCA CKA SPHDGN
#6(CSA) Check sum alarm has generated.
#4(PHA) Phase data abnormal alarm has generated.
#3(RCA) Speed count abnormal alarm has generated.
#1(CKA) Clock alarm has generated.
#0(SPH) Soft phase data abnormal alarm has generated.
1 Check the contens using the above diagnostic function if the alarm
generates repeatedly. If diagnostic data is the same, serial pulse coder
may be faulty.⇒Refer to following Caution
2 When diagnostic result does not the same, or other abnormality is
detected, an external noise may be generated.
#7 #6 #5 #4 #3 #2 #1 #0
0204 LDA PMSDGN
#4(LDA) LED of serial pulse coder is abnormal
#3(PMS) Feedback pulses are not issued correctly.
(1) #4(LDA): LED in the serial pulse coder is abnormal.
Serial pulse coder is faulty⇒Refer to following Caution
(2) #3(PMS): Pulses are not issued correctly by abnormality of
feedback cable.
1 Fault of serial pulse coder ⇒Refer to following Caution
2 Feedback cable is faulty.
CAUTION
Reference position and machine’s standard position are
different from the ones before, adjust and set them correctly.
7.12
ALARM 350 (SERIAL
PULSE CODER IS
ABNORMAL)
Points
D When diagnostic number
0202 shows 1
D When diagnostic number
0204 shows 1