EP Equipment CQD16, Service Manual

Page: 152 / 251

REV. 07/2016
ELECTRICAL SYSYTEM
8
138
8.14.2 Steering Controller (EPS-ACO)
Error Message
Possible cause Fault elimination
Error
Error text
6 SERIAL ERR #1
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 slave uC does not receive the
communication from the main uC
through this serial interface.
It is necessary to replace
the controller.
13 EEPROM KO
It occurs if a test to write and read
one location in EEPROM fails. The
SW expects to read the written
value. It occurs also when the
hour counter gives different values
between the three redundant
locations in which it is recorded. It
occurs also when the busy bit of
the EEPROM does not rise within
12 msec.
It is necessary to replace
the controller.
16 LOGIC FAILURE #4
This alarm occurs in the rest state if
the output of the voltage ampli
fi er of
the phase Vw-Vv have a drift larger
than ±0.25 V.
It is necessary to replace
the controller.
17 LOGIC FAILURE #3
This alarm occurs in the rest state if
the output of the voltage ampli
fi er of
the phase Vu-Vw have a drift larger
than ±0.25 V.
It is necessary to replace
the controller.
18 LOGIC FAILURE #2
This alarm occurs when the real
voltage between phases W and V
of the motor is different from the
desired.
It is necessary to replace
the controller.
19 LOGIC FAILURE #1
This alarm occurs when the real
voltage between phases W and U
of the motor is different from the
desired.
It is necessary to replace
the controller.
32 VMN NOT OK
This alarm occurs in the initial rest
state after key on if the outputs of
the motor voltage ampli
fi ers are not
in the window from 2.2 to 2.8 Vdc.
It is necessary to replace
the controller.
48 MAIN CONT. OPEN
This alarm occurs only when the
setting CAN BUS is PRESENT.
Then the eps-ac0 waits for a via
CAN information that the traction
controller has closed the main
contactor. If this information lacks
more than about 1.5 secs, this
alarm occurs.
F i n d , o n t h e t r a c t i o n
controller, the reason for
keeping the main contactor
open.