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Code
Alarm
247
DATA
ACQUISITION
CAN BUS KO
248
NO CAN MSG.
S.P OUT OF
RANGE
249
CHECK UP
NEEDED
MANTAINANCE
Pump
EPS
Traction
(P)
(E)
(T)
Description
Cause :
Acquisition of the current gains.
Troubleshooting :
The alarm ends when the acquisition is done.
"This alarm is signalled in the current gain acquisition
phase.Troubleshooting: wait for the end of the
acquisition activity."
The diagnosis of the CAN-BUS line is present only if the
inverter uses this link (depends on the software version).
It is signalled if the inverter does not receive any
message from the CAN-BUS line. First of all, check the
wiring. If it is ok, the problem is on the logic board, which
must be replaced.
This is a generic CAN error and it occurs when one of
the other modules connected to the CAN network
doesn't send its CAN messages or the timing of the CAN
transmission is wrong.
Troubleshooting :
Check the CAN connections between the different
modules, check the ohmic value between CANL and
CANH.
This alarm occurs for a fault on the command
potentiometer (CPOC1 on CNA#9, CPOC2 on CNA#8).
When a single command pot is chosen, the alarm occurs
if its wiper (CPOC1) exits the range from 0.8 Vdc to 4.2
Vdc. When the twin pot is chosen, the alarm occurs if the
sum of the two wiper voltages (CPOC1+CPOC2) exits
the range from 4.5 Vdc to 5.5 Vdc. Check the
connections of the potentiometer. This alarm occurs
when one connection of the command potentiometer is
broken.
Cause :
This is just a warning to call for the time programmed
maintenance.
Troubleshooting :
It is just enough to turn the CHECK UP DONE option to
level ON after the maintenance is executed.
This alarm occurs when the switch input ENABLE
MAINTENANCE, read by the ACE0 and sent via CAN to
the ACE2, is closed.
Troubleshooting :
Release the switch input ENABLE MAINTENANCE.
7-98
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