Yaskawa i80M Maintenance Manual - Manual (Page 106)

4.2 TROUBLESHOOTING BY ALARM
4.2.17 ALARMS 3141 TO 3148 (PREVENTION
UNCONTROLLED RUNNING)
CODES (Cent’d)
OF
These alarms detect uncontrolled running due to
erroneous wiring of the motor or encoder.
Table 4.19 Alarms 3141 to 3145 (Prevention of Uncontrolled Running)
Cause of Trouble
I
Check Method
I
Solution
Failure of model Check whether the alarm is caused merely Replace model
board by application of control power. FC300B board.
Erroneous wiring of Check wiring according to YASNAC i80 If erroneous wiring is
motor Connecting Manual (T .5). found, correct the wiring.
Erroneous wiring of Check wiring according to YASNAC i80 If erroneous wiring is
encoder Connecting (TOE -C843-11.5). found, correct the wiring.
New incremental
encoder pole sense
input signal (phase C)
malfunction (by noise)
Check whether alarm occurs often when
●
Restart operation after
primary power supply is turned on. turning off the power
and then turning it on.
●
Provide some noise
prevention.
4.2.18 ALARMS 3161 TO3168 (ABSOLUTE ERRORS)
Malfunction of absolute encoder is detected.
Table 4.20 Alarms 3161 to 3165 (Absolute Errors)
Cause of Trouble
I
Check Method
I
Solution
Failure of model Check whether the alarm is caused merely Replace model
JANCD-FC300B board by application of control power. FC300B board.
Erroneous wiring of Check wiring according to YASNAC i80 If ecconeous wiring is
encoder Connecting Manual .5). found, correct the wiring.
Malfunction of absolute Check whether alarm lamp goes out after Restart operation after
encoder power is turned off, then on again. turning power off, then on
again.
I
Malfunction of absolute Check whether the wiring of absolute Retry setup of absolute
encoder encoder is correct and alarm occurs. encoder.
Backup-battery Check whether battery alarm occurs at the Connect or replace backup
defective or not same time. battery.
netted
Fault of absolute Check whether alarm occurs although all of Replace the motor.
encoder the above check items are satisfied.
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