Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 83)

PC NC Maintenance Manual Chapter 4: Troubleshooting
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AL-65:INC signal error
Error Contents The INC signal input timing error (encoder method ORT)
Detection Methods If the following condition exists, an alarm will sound.
(C2-22.b5 = 0 which is a setting when selecting INC positioning refer-
ence point is a former stopping position command) / (starting point
latch has not completed) / (INC signal is ON [enable when rising ORT
signal].
starting point latch is done by executing the absolute positioning. The
starting point latch will be cleared when it has become 50r/min. or
more.
Cause and measures
Remarks INC signal is enabled when inputs as same as ORT signal, or input pre-
viously.
C2-22.b5 INC positioning reference point selection
0: Previous stop position command
1: Current stop position command
AL-70:The tuning incompletion.
Error Contents The orientation command was inputted without tuning. (magnetic sen-
sor method ORT)
[Detection Methods When orientation signal ORT is ON in a state of tuning operation selec-
tion bit (C3-22.b4) becomes tuning enable (= 0), minor fault display is
performed due to tuning incompletion AL-60.
Cause and measures
Cause Measures
INC signal was turned ON without
absolute positioning. Confirm the fault phenomenon by driving in the same drive
parameter.
Change the circuit so that the INC signal is specified after abso-
lute positioning is performed.
Cause Measures
Orientation tuning is uncompleted. Adjust according to the orientation adjustment procedure
and the control parameter.