85
85
Code
Code
Programmer display
Programmer display
Probable fault reason
Probable fault reason
Deep fault
Deep fault
reason/troubleshooting
reason/troubleshooting
Fault display
Fault display
6= Low voltage cutback failure
6= Low voltage cutback failure
7= High pressure cutback f failure
7= High pressure cutback f failure
8= Controller can’t detect encoder
8= Controller can’t detect encoder
signal and passage signal
signal and passage signal
disappears.
disappears.
9= Motor parameter setting
9= Motor parameter setting
exceeds the scope.
exceeds the scope.
89
89
Motor Type Fault
Motor Type Fault
1. Motor type parameter values
1. Motor type parameter values
exceed the range
exceed the range
Reason
Reason
：
：
Motor Type parameter
Motor Type parameter
setting value is an illegal value.
setting value is an illegal value.
Troubleshooting
Troubleshooting
：
：
Reset and
Reset and
restart the key switch.
restart the key switch.
91
91
VCl/OS Mismatch
VCl/OS Mismatch
Motor stops
Motor stops
Main contactor stops
Main contactor stops
EM brake stops
EM brake stops
Accelerator stop
Accelerator stops
s
Interlock stops
Interlock stops
1-4 output stops
1-4 output stops
PD stops
PD stops
Brake
Brake
Pump stops
Pump stops
1. The controller VCL does not
1. The controller VCL does not
match OS.
match OS.
Reason
Reason
：
：
The controller VCL does
The controller VCL does
not match OS.
not match OS.
Troubleshooting
Troubleshooting
：
：
Update new
Update new
VCL and OS.
VCL and OS.
92
92
EM Brake Failed to Set
EM Brake Failed to Set
EM Brake failure
EM Brake failure
Throttle invalid
Throttle invalid
1.
1. Truck
Truck continues
continues to
to move
move after
after
the EM brake has been
the EM brake has been
commanded to set
commanded to set
2. Small EM braking force.
2. Small EM braking force.
Reason
Reason
：
：
After EM brake
After EM brake locks,
locks,
the truck still moves.
the truck still moves.
Troubleshooting
Troubleshooting
：
：
Check if the
Check if the
throttle works normal.
throttle works normal.
93
93
Encoder LOS (Limited Operating
Encoder LOS (Limited Operating
Strategy)
Strategy)
1. LOS activated due to motor
1. LOS activated due to motor
installing or encoder fault.
installing or encoder fault.
2. Wrong wiring.
2. Wrong wiring.
3. Truck is stalled
3. Truck is stalled
Reason
Reason
：
：
LOS activated due to
LOS activated due to
motor installing or encoder fault.
motor installing or encoder fault.
Troubleshooting
Troubleshooting
：
：
Restart the key
Restart the key
switch
switch
，
，
if it is caused by motor
if it is caused by motor
installing, make sure encoder
installing, make sure encoder
work under normal condition,
work under normal condition,
Throttle
Throttle Command=0,M
Command=0,Motor
otor
RPM=0.
RPM=0.
94
94
Emer Rev Timeout
Emer Rev Timeout
EM Brake failure
EM Brake failure
Throttle invalid
Throttle invalid
1. Emer Rev timeout activated due
1. Emer Rev timeout activated due
to EMR Timer overdue
to EMR Timer overdue
2. Emer Rev switch is always at
2. Emer Rev switch is always at
ON position.
ON position.
Reason
Reason
：
：
Emer Rev function
Emer Rev function
activated to operate until Emer
activated to operate until Emer
Rev timing end.
Rev timing end.
Troubleshooting
Troubleshooting
：
：
Check Emer
Check Emer
Rev switch.
Rev switch.
98
98
Illegal Model Number
Illegal Model Number
Motor stops
Motor stops
Main contactor stops
Main contactor stops
EM brake stops
EM brake stops
Throttle stops
Throttle stops
Brake
Brake
Pump stops
Pump stops
1. Controller model can’t be
1. Controller model can’t be
identified.
identified.
2. Software and hardware do not
2. Software and hardware do not
match.
match.
3. Controller damage.
3. Controller damage.
Reason
Reason
：
：
Controller model can’t
Controller model can’t
be identified
be identified
Troubleshooting
Troubleshooting
：
：
Choose correct
Choose correct
controller, and download correct
controller, and download correct
controller software.
controller software.
99
99
Dualmotor Parameter Mismatch
Dualmotor Parameter Mismatch
Close main contactor
Close main contactor
Close EM brake
Close EM brake
Close accelerator
Close accelerator
Brake and close the pump
Brake and close the pump
Enable parameter of dualmotor is
Enable parameter of dualmotor is
set as ON, and control mode
set as ON, and control mode
selecting parameter not set as 0
selecting parameter not set as 0
（
（
Speed Mode Express) or 1
Speed Mode Express) or 1
（
（
Speed Mode
Speed Mode
）
）
Reason
Reason
：
：
When the dual drive
When the dual drive
software enabled, control mode
software enabled, control mode
should set as 0
should set as 0
（
（
Speed Mode
Speed Mode
Express) or 1
Express) or 1
（
（
Speed Mode
Speed Mode
）
）
,,
otherwise there will be fault.
otherwise there will be fault.
Troubleshooting
Troubleshooting
：
：
Adjust to proper
Adjust to proper
value and switch KSI.
value and switch KSI.
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