© Mitsubishi Forklift Trucks 2013. All
© Mitsubishi Forklift Trucks 2013. All
rights reserved.
rights reserved.
Revision: B
Revision: B
Document ID: 615023
Document ID: 615023
160 (244)
160 (244)
PBV20N2
PBV20N2
Service
Service Manual
Manual
CODE
CODE
TRUCKTOOL
TRUCKTOOL
AND
AND
DISPLAY
DISPLAY
DESCRIPTION
DESCRIPTION
80
80
Direction switches active
Direction switches active
simultaneously
simultaneously
FORW+BACK
FORW+BACK
(Warning)
(Warning)
This warning occurs when both travel demands are active at
This warning occurs when both travel demands are active at the same time.
the same time.
Use a tester to check for possible reasons for
Use a tester to check for possible reasons for this warning. If both directions are active at
this warning. If both directions are active at the
the
same time, check the accelerator and its wiring.
same time, check the accelerator and its wiring.
If no direction signals are active
If no direction signals are active at the same time outside the
at the same time outside the controller, the problem is in the
controller, the problem is in the
COMBIACX controller.
COMBIACX controller.
82
82
Encoder error
Encoder error
ENCODER ERROR
ENCODER ERROR
(Alarm)
Stored
(Alarm)
Stored
This alarm occurs if the frequency supplied to
This alarm occurs if the frequency supplied to the motor is higher than
the motor is higher than 40 Hz and the fee
40 Hz and the feedback
dback
signal from the encoder has a
signal from the encoder has a jump higher than 40 Hz
jump higher than 40 Hz within 20-40 milliseconds. This condition
within 20-40 milliseconds. This condition
is related to a
is related to a malfunction of the encoder. In such a
malfunction of the encoder. In such a case, check the encoder’s mechanical
case, check the encoder’s mechanical
functioning and its wirings connections. Also check the encoder’s mechanical installation; if the
functioning and its wirings connections. Also check the encoder’s mechanical installation; if the
encoder slips inside the housing, it
encoder slips inside the housing, it causes this alarm.
causes this alarm.
Also electromagnetic nois
Also electromagnetic noise on the encoder can caus
e on the encoder can cause this alarm. In such a cas
e this alarm. In such a case, replace the
e, replace the
encoder. If the alarm persists after replacing the
encoder. If the alarm persists after replacing the encoder, the problem is in
encoder, the problem is in the COMBIACX
the COMBIACX
controller.
controller.
86
86
PEDAL WIRE KO
PEDAL WIRE KO
PEDAL WIRE KO
PEDAL WIRE KO
(Alarm)
Stored
(Alarm)
Stored
The software checks for the connection of the t
The software checks for the connection of the two supply ends of the accelerator’s
wo supply ends of the accelerator’s
potentiometer. The test consists of reading the voltage
potentiometer. The test consists of reading the voltage drop on a sense diode
drop on a sense diode connected
connected
between NPOT and GND. If the accelerator gets disconnected on PPOT or
between NPOT and GND. If the accelerator gets disconnected on PPOT or NPOT, no current
NPOT, no current
flows in this sense diode and
flows in this sense diode and the voltage on the NPOT connection drops down.
the voltage on the NPOT connection drops down.
This alarm occurs if the NPOT voltage is less than
This alarm occurs if the NPOT voltage is less than 0.3 V and
0.3 V and also when the NPOT voltage is
also when the NPOT voltage is
higher than 2 V (to detect also the condition of a broken sense diode).
higher than 2 V (to detect also the condition of a broken sense diode).
In such a case, check the voltage on
In such a case, check the voltage on the NPOT and the accelerator connections.
the NPOT and the accelerator connections.
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