Electrical Troubleshooting
Troubleshooting
Page 3
Status LED Code Table
The status LED’s on the speed controller can be
used to give you an idea of where the problem may
be. During normal operation (no faults) the yellow
LED will be flashing steady.
When the controller senses a fault the two LED’s
can be used to determine the fault code. The fault
code will be a two digit code. The red LED signifies
which digit and the yellow LED signifies the fault
code. For example: When the red LED flashes once,
the yellow LED will be flashing the first digit. When
the red LED flashes twice, the yellow LED will be
flashing the second digit. The fault code will repeat
until the fault is corrected.
Typical location of Status LED’s
Code Handset Display
Effect of Fault
Possible Cause
Note
12
Controller Overcurent
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake.
1.
External short in motor wiring.
2.
Defective controller.
3.
Faulty wiring.
13
Current Sensor Fault
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake.
1.
Short or leakage to frame from motor
windings or wiring.
2.
Controller defective
14
Precharge Failed
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake.
1.
External load attached to controller
B+ terminal.
Possible non-factory
installed device
15
Controller Severe Undertemp
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake;
Shutdown throttle;
Full Brake.
1.
Vehicle operated in temperatures
below -40ºC.
16
Controller Severe Overtemp
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake;
Shutdown throttle;
Full Brake.
1.
Vehicle operated in extreme high
ambient temperatures.
2.
Vehicle overloaded.
3.
Controller not properly mounted.
Controller overheated
(+95ºC)
17
Severe Undervoltage
Reduced drive torque.
1.
Blown circuit breaker.
2.
Battery failure while in operation.
18
Severe Overvoltage
Shutdown of main contactor;
Shutdown of motor;
Shutdown of EM brake;
Shutdown throttle;
Full Brake.
1.
Blown circuit breaker during regen.
2.
Battery failure during regen.
21
Controller Undertemp Cutback
Reduced motor torque.
1.
Controller operated in temperatures
below -25ºC
Controller output is
reduced below -25ºC
22
Controller Overtemp Cutback
Reduced drive and brake torque.
1.
Vehicle operated in extreme high
ambient temperatures.
2.
Vehicle overloaded.
3.
Controller not properly mounted.
Controller overheated
(+85ºC)
23
Undervoltage Cutback
Reduced drive torque.
1.
Batteries discharged.
2.
Battery failure.
Summary of Contents for B0-T48-48 Taylor Truck T48
Page 2: ......
Page 14: ...TAYLOR DUNN...
Page 30: ...TAYLOR DUNN...
Page 68: ...Maintenance Service and Repair Steering Page 22 Exploded View of Steering Gear...
Page 86: ...TAYLOR DUNN...
Page 112: ...TAYLOR DUNN...
Page 118: ...TAYLOR DUNN...
Page 130: ...TAYLOR DUNN...
Page 140: ...TAYLOR DUNN...
Page 152: ...Illustrated Parts Parts Page 2 Front Axle...
Page 154: ...Illustrated Parts Parts Page 4 Steering Knuckle...
Page 156: ...Illustrated Parts Parts Page 6 Steering Linkage...
Page 162: ...Illustrated Parts Parts Page 12 Rear Suspension View from rear...
Page 164: ...Illustrated Parts Parts Page 14 Transmission Gear Case...
Page 168: ...Illustrated Parts Parts Page 18 Rear Brakes Front Brakes...
Page 170: ...Illustrated Parts Parts Page 20 Brake Lines and Master Cylinder...
Page 172: ...Illustrated Parts Parts Page 22 Motor...
Page 174: ...Illustrated Parts Parts Page 24 Motor Mount Apply 94 421 34 grease to inside of motor coupler...
Page 186: ...Illustrated Parts Parts Page 36 Batteries FRONT OF VEHICLE...
Page 188: ...TAYLOR DUNN...
