HELI CQD16X1, Operation & Service Manual

Page: 88 / 105

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227 SLAVE COM.
ERROR
Main uC and slave uC
communicate via a local serial
interface. This alarm occurs
when the main uC does not
receive the communication
from the slave uC through this
series interface.
Change the controller
228 POSITION ERROR Encoder count does not match
the wheel position and it
alarms.
When centering switch is used with
feedback encoder and the
FEEDBACK ENC menu and
FEEDBACK SECTOR disagree.
1. Check the steering proximity switch
power.
2. Check the position of proximity
switch and sensing iron block
position.
237 WAITING DATA When CAN BUS is PRESENT
and the key switch is turned
on, EPD-AC0 require
travelling controller send
parameter through CAN bus.
from sending the request to
receiving, it alarms all the
time. At this time, steering is
invalid and the safety relay is
disconnected.
238 EPS NOT ALIGNED This is a real alarm that cut off
the traction. It occurs at the
initial alignment if the straight
ahead condition is not matched
within 6s. throughout this 6s
delay, the steer is not activated
yet, the safety relays are open
and the traction is stopped.
Check if zero proximity switch can
work normally.
1. Check the steering proximity switch
power.
2. Check the position of proximity
switch and sensing iron block
position.
239 WAITING FOR
TRAC
At key-on the EPS-AC0 nneds
an assent from the traction
controller to close the safety
contacts and to turn onto
operational mode. Until this
assent is not relieved, this
warning occurs. The steer is not
activated yet and the safety
relays remain open when this