Mitsubishi PBV20N2 Service Manual page 161

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

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