HELI CQD16X1, Operation & Service Manual

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warning is present.
241 ENCODER ERROR It occurs when ENCODER
CONTROL is set ON and the
real frequency does not pursuit
the commanded frequency.
This condition is several times due to
either, a mismatching between the
encoder resolution used in the SW
and the real encoder resolution, or a
wrong connection between the two
encoder channels.
242 Q LINE SENSOR
KO
This alarm occurs when the
mean voltage on the quadrature
line of the stepper motor
(connection CAN#8) is not null.
1. Check connection of quadrature line
of stepper motor.
2. check the resistance between the
battery negative pole and terminal
2A9. It should be lower than 30ohm.
3.change the stepper motor.
243 DLINE SENSOR
KO
This alarm occurs when the
mean voltage on the direct line
of the stepper motor
(connection CAN#8) is not null.
1. Check connection of direct line of
stepper motor.
2. Check the resistance between the
battery negative pole and terminal
2A9. It should be lower than 30ohm.
3. Change the stepper motor.
245 DATA
ACQUISITION
The alarm occurs when the
acquiring the motor resistance
or when adjusting the
parameters to compensate for
the gain of the current
amplifilter (max. current factory
adjusted).
Recycle the key.
246 MICRO SLAVE KO In stepper motor application,
this alarm occurs of the main
uC is detecting a direction of
the stepper motor not matched
with the one the slave uC is
detecting.
Furthermore, this alarm occurs
also if the main uC is detecting
no limitation meanwhile the
slave uC is detecting a steering
limitation.
Change the controller
247 CAN BUS KO This alarm occurs only when
the setting CAN bus is
PRESENT. Then the
EPS-AC0 must receive the
event message from the traction
controller. If these message lack
more than about 1s, this alarm
Check the CAN bus communication
system and analyze the frames from
the traction controller to the steer
controllers.