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Code
Alarm
244
GAIN EEPROM
KO
245
PUMP VACC
NOT OK
WRONG RAM
MEMORY
DATA
ACQUISITION
246
AUX DRIVER
OPEN
MICRO SLAVE
KO
Pump
EPS
Traction
(P)
(E)
(T)
Description
The parameters to compensate for the gain of the
current amplifiers (ADJUSTMENT #03 and
ADJUSTMENT #04) are recorded in a not volatile
memory (EEPROM) with a redundant handling. In fact
every adjustment is recorded in three EEPROM
locations. If the values in these three locations are
different in between this alarm occurs. It is necessary to
send the controller to service man to perform the
maximum current regulation.
Cause :
The minimum of the lift potentiometer is not correctly set.
Troubleshooting :
It is suggested to repeat a "PROGRAM VACC"
procedure.
Cause :
The algorithm implemented to check the main RAM
registers finds a wrong contents : the register is "dirty".
This alarm inhibit the machine operations.
Troubleshooting :
Try to switch the key off and then on, if the alarm is still
present replace the ACE2 logic board.
This alarm occurs two ways :
1) When hardware setting AUTOTEACHING is turned
On and the key recycled. Then during the consequent
autoteaching procedure, a DATA ACQUITION alarm
occurs.
2) When acquiring the motor resistance or when
adjusting the parameters to compensate for the gain
of the current amplifiers(maximum current factory
adjusted). Recycle the key.
Cause :
The driver of the electromechanical brake coil is not able
to drive the load.
Troubleshooting :
Replace the controller.
Cause :
The EB/AUX coil driver is not able to drive the load.
The device itself or its driving circuit is damaged.
Troubleshooting :
This type of fault is not related to external components;
replace the ACE2 logic board.
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 also if the main uC is detecting no
steering limitation meanwhile the slave uC is detecting
steering limitation. It is necessary to replace the
controller.
7-97
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