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Code
Alarm
227
WATCHDOG#2
SLAVE
COM.ERROR
228
TILLER OPEN
TILLER OPEN
POSITION
ERROR
Pump
EPS
Traction
(P)
(E)
(T)
Description
Cause :
At start-up the watch dog signal is already active before
the software has generated it. At stby or running
condition the watch dog signal is not active (in alarm
status).
Troubleshooting :
The WD hardware circuit or microcontroller output port
are damaged. In both cases no external component are
involved. Replace the logic board.
Main uC and Slave uC 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.
Cause :
Warning : When the tiller is released, after a fixed period
of time of standby (30 seconds) the main contactor open.
Troubleshooting :
At the next travel request the warning disappear.
Not managed by this software.
This alarm occurs for an error in the redundant test of the
feedback sensors. Here we have an encoder and two
toggle switches. This alarm occurs whether the sector
(toggle switches configuration) and the encoder counting
are not matched. The sector is provided with the
FEEDBACK SECTOR reading in the tester menu ; the
encoder counting is provided with the WHEEL ANGLE
reading in the tester menu.
WHEEL ANGLE
(degrees)
-22 to +22
+23 to +67
+68 to +112
+113 to +157
WHEEL ANGLE
(degrees)
+158 to -158
-157 to -113
-112 to -68
-67 to -23
When the FEEDBACK SECTOR and WHEEL ANGLE
don't meet the above correspondence, an alarm
POSITION ERROR occurs in less than 100msec. If the
alarm occurs when installing a new controller, be sure
the AUX FUNCTION 11 corresponds to the toggle
switches arrangement you have and SET ENC AT 360
was correctly set .
7-88
Admitted
Admitted
SECTOR
PEEDBACK SECTOR
1
st
or 4
th
3.13V or 1.88V
1
ST
3.13V
1
st
or 2
nd
3.13V to 4.39V
2
nd
4.39V
Admitted
Admitted
SECTOR
PEEDBACK SECTOR
2
nd
or 3
rd
4.39V or 0.62V
3
rd
0.62V
0.62V to 1.88V
3
rd
or 4
th
1.88V
4
th
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