Yaskawa YASNAC PC NC Maintenance Manual User Manual
Page 85
PC NC Maintenance Manual
Chapter 4: Troubleshooting
4-64
AL-75:INC signal error (magnetic sensor method orientation)
Error Contents
The INC signal input timing error
Detection Methods
If the following condition exists, an alarm will sound.
(C3-22.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
The AL-A0:
YENET1200 card error
Error Contents
YENET1200 card error [alarm signal error from card]
Detection Methods
If the following condition exists, an alarm will sound.
(the system GO command was issued by the host system) /
(YENET1200 card error signal CCLAM(12CN-38) is ON).
Cause and measures
Cause Measures
INC signal was turned ON without abso-
lute positioning.
Confirm the fault phenomenon by driving in the same drive
parameter.
Change the circuit so that the INC signal is instructed after
absolute positions is performed.
Cause Measures
YENET1200 card connection defect
Confirm the
YENET1200 card connection (12CN).
YENET1200 card fault
Exchange unit (exchange YENET1200 card)
Control card fault
Exchange unit (exchange control card)