Big Joe PDSR 30, Installation, Operation, Maintenance & Repair Parts

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BL-PDSR 30-0319 - 03-07-2019 4-15
242 Q LINE SENSOR KO
This alarm occurs when the mean
voltage of the Quadrature line
of the stepper motor (connection
CNA#8) is not null: the voltage on
every stepper motor line is a sine
wave with null mean voltage.
Check the continuity of the stepper
motor connections. In particular the
resistance between CNA#8 and the
negative battery (with the stepper motor
at rest) is expected to be very low
(close to 30 ohms).
243 D LINE SENSOR KO
This alarm occurs when the mean
voltage of the Direct line of the step-
per motor (connection CNA#9) is not
null: the voltage on every stepper
motor line is a sine wave with null
mean voltage
Check the continuity of the stepper
motor connections. In particular the
resistance between CNA#9 and the
negative battery (with the stepper motor
at rest) is expected to be very low
(close to 30 ohms).
244 GAIN EEPROM KO
The parameters to compensate for
the gain of the current amplifiers
(ADJUSTMENT #03 and ADJUST-
MENT #04 are recorded in a not vol-
atile memory (eeprom) with a
redundant handling. In fact every
adjustment is recorded in three
eeprom locations. If the values in
these thee location are diffe- rent,
this alarm occurs.
It is necessary to send the controller to
Zapi to execute the maximum current
regulation.
245 DATA ACQUISITION
This alarm occurs when acquiring
the motor resistance or when adjust-
ing the parameters to compensate
for the gain of the current amplifiers
(maximum current factory adjusted).
Recycle the key
.
246 MICRO SLAVE KO
In stepper motor application, this
alarm occurs if the main uC is
detecting a direction of the stepper
motor not matched
with the one that the slave uC
is detecting.
In closed loop application, this alarm
occurs if the main uC is detecting a
direction of the steering error not
matched with the one that the slave
uC is detecting.
Furthermore, this alarm occurs if the
main uC is detecting no steering lim-
itation meanwhile the slave uC is
detecting a steering limitation.
It is necessary to replace the controller
.
247 CAN BUS KO
This alarm occurs only when the set-
ting CAN BUS is PRESENT. Then
the EPS-AC0 must receive the
event messages from the traction
controller. If these messages lack
more than about 1 sec, this alarm
occurs.
Check the CAN Bus communication
system and analyse the frames from
the traction controller to the steer con-
trollers.
Error Message
Possible Cause Fault Elimination
Code Error Text