Big Joe Joey J1 Series Maintenance And Repair Parts Manual page 25

Table 3-3 Troubleshooting Chart (Traction/Lift Controller) - Continued
ERROR ERROR TEXT
60 CAPACITOR CHARGE In working condition, a resistance con-
61 HIGH TEMPERATURE This alarm occurs when the temperature
65 MOTOR TEMPERAT
67 CAN BUS KO
70 ENCODER ERROR
71 HANDBRAKE
73 THERMIC SENS KO
BL-J1-0315 - 11-19-2019
POSSIBLE CAUSE
nected between the key and the Rail
Capacitors, keeps the Rail Capacitors
charged before the Main Contactor
closes. When the voltage on the Rail
Capacitors (measured on the phase V)
is low and does not increase when the
main contactor is opened, this alarm
occurs.
of the base plate is higher than 78C
up to 100C. At 100C the current is
limited to 0 Amps.
This is just a warning with not effect will
the vehicle performance. It occurs
when the temperature of the motor
winding overtakes the MOTOR OVER-
TEMP setting.
This alarm occurs if the controller does
not receive any message from the
CAN Bus line.
Two consecutive readings of the
encoder speed are too drastic. It is not
possible for the encoder to change its
speed a lot in a short period. An
encoder failure has occurred (e.g. one
or two channels of the encoder are cor-
rupted or disconnected.
This alarm occurs when the operator
tries to travel with the emergency
brake active.
When the output of the thermal sensor
on the base plate is higher than 4.95V
or lower than 0.1V, the sensor is
assumed defective and this alarm
occurs.
FAULT CLEARANCE
The possibilities:
1. Another device, connected in
parallel with the Rail Capacitors,
has a failure.
2. At least one motor phase is not con-
nected to the controller or broken.
3. A Power failure or a Logic Failure
occurred in the controller. Replace
the controller.
Improve the air cooling of the controller.
Check the thermal sensor inside the
motor (use the MOTOR TEMPERA-
TURE reading in the TESTER menu).
If the senor is OK, improve the air cool-
ing of the motor.
1. First check the wiring.
2. If OK, try to disconnect one to one
the module connected to the CAN
Bus and check if this alarm disap-
pears.
3. Replace the controller.
Check both the electric and the mechan-
ical encoder functionality. Frequently
one of the two sensor bearing rings
slips inside its seat causing this alarm.
Also, the electronic noise on the sen-
sor bearing can be a cause of the
alarm.
Check the emergency brake switch and
its wiring to CNA#13 The emergency
brake switch must be connected
between CAN#13 and GND. When it is
closed to GND, the emergency brake
is considered active. A failure in the
logic is possible too. Replace the con-
troller.
It is necessary to replace the controller.
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