Code Name of error
Details of error
Cause
Remedy
LV
Low voltage
・
Control input voltage drops
to 36 V or less for 30
seconds
・
Insufficient battery
remaining charge
・
Faulty battery charging
・
End of battery life
・
Recharge the battery.
・
Check the charger
connections.
・
Measure the specific weight
of the battery to diagnose it.
HV
High voltage
・
Control input voltage rises
to 70 V or more
・
Machine abruptly stopped
while traveling downhill
continuously for 2 to 3
minutes or more
・
Do not stop the machine
abruptly while traveling
downhill continuously for 2 to
3 minutes or more.
OH
Overheating
・
Temperature of cooling fins
for servo drive increases to
80 °C (176 °F) or more
・
Temperature of motor
increases to 130 °C (266 °F)
or more
・
Drive cooling fan not
rotating
・
Dirty cooling fins
・
Traveling with the brake
dragging
・
Replace the drive cooling
fan.
・
Clean the cooling fins.
・
Adjust the brake.
OL
Overload
・
Load greater than rated
torque applied to motor
・
High-load operations using
blade or cultivator performed
at high speed
・
Traveling at high speed on a
steep upward slope
・
Traveling with the brake
dragging
・
Perform high-load
operations at low speed.
・
Travel at low speed on a
steep upward slope.
・
Adjust the brake.
TE
Transistor
error
・
Current greater than
specified value fed to
transistor
・
Transistor temperature
exceeds specified value
・
Transistor control voltage
less than specified value
・
High-load operations using
blade or cultivator performed
at high speed
・
Traveling at high speed on a
steep upward slope
・
Traveling with the brake
dragging
・
Perform high-load
operations at low speed.
・
Travel at low speed on a
steep upward slope.
・
Adjust the brake.
EE
Encoder error
・
Error occurred in encoder
signal from motor
・
Loose encoder connector
・
Broken or shorted encoder
cable
・
Correctly connect the
encoder connector.
・
Replace the encoder cable.
OS
Overspeed
・
Motor rpm exceeds
specified value
・
Traveling at high speed on a
steep downward slope after
LV occurs
・
Travel at low speed on a
steep downward slope after
LV occurs.
OCR
Overcurrent
relay
・
Overcurrent fed to circuits
of travel safety device
・
Faulty adjustment of limit
switches in travel safety
device
・
Damage to limit switches in
travel safety device
・
Adjust the limit switches in
the travel safety device.
・
Replace the limit switches in
the travel safety device.
Handling Instructions
SP160EB
Handling Instructions
Page 4-31
Instruments
Summary of Contents for SP160EB
Page 6: ...SP160EB Contents...
Page 20: ...SP160EB Product Overview Page 3 8 Safety Signs and Instruction Signs...
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