EP Equipment CQD16, Service Manual

Page: 156 / 251

REV. 07/2016
ELECTRICAL SYSYTEM
8
142
Error Message
Possible cause Fault elimination
Error Error text
223 JERKING FB POT
This alarm occurs if the feedback
potentiometer (CPOT on CNB#6)
changes with a jerk larger than 0.3
V in 16 msec. This alarm is used to
catch a discontinuity in the voltages
of the feedback potentiometer.
C h a n g e t h e f e e d b a c k
potentiometer.
225 CURRENT GAIN
T h i s a l a r m o c c u r s w h e n t h e
parameters to compensate for
the gain of the current amplifiers
( A D J U S T M E N T # 0 3 a n d
ADJUSTMENT #04) have the
default values
It is necessary to send the
controller to Zapi to perform
t h e m a x i m u m c u r r e n t
regulation.
226 NO SYNC
Every 16msec, inside the code
cycle, the main uC rises and then
lowers an input for the slave uC
(SYNC). When the slave uC detects
no edge for more than 100 msec on
this input, this alarm occurs. This is
just a watch dog function: when the
main uC does not execute the code
cycle it does not update the SYNC
signal and the slave uC cuts off the
steer and traction.
It is necessary to replace
the controller.
227 SLAVE COM. ERROR
M a i n u C a n d S l a v e u C
communicate via a local serial
interface. This alarm occurs when
the main uC does not receive the
communication from the slave uC
through this serial interface.
It is necessary to replace
the controller.
237 WAITING DATA
T h i s w a r n i n g o c c u r s o n l y i f
CAN BUS is PRESENT. At key-
o n t h e e p s - a c 0 a s k s t o t h e
traction controller to send a list of
parameters via CAN Bus. From
the request until the parameters
are correctly relieved, this warning
occurs. The steer is not activated
yet, and the safety relays remain
open when this warning is present.
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