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 B 2-48
Page 2: ......
Page 70: ...Maintenance Service and Repair Steering Page 22 Exploded View of Steering Gear ...
Page 88: ...TAYLOR DUNN ...
Page 114: ...TAYLOR DUNN ...
Page 120: ...TAYLOR DUNN ...
Page 132: ...TAYLOR DUNN ...
Page 134: ...TAYLOR DUNN ...
Page 164: ...Illustrated Parts Parts Page 2 Front Axle ...
Page 166: ...Illustrated Parts Parts Page 4 Steering Knuckle ...
Page 168: ...Illustrated Parts Parts Page 6 Steering Linkage ...
Page 174: ...Illustrated Parts Parts Page 12 Rear Suspension View from rear ...
Page 176: ...Illustrated Parts Parts Page 14 Transmission Gear Case ...
Page 180: ...Illustrated Parts Parts Page 18 Rear Brakes Front Brakes ...
Page 182: ...Illustrated Parts Parts Page 20 Brake Lines Master Cylinder ...
Page 184: ...Illustrated Parts Parts Page 22 Motor ...
Page 186: ...Illustrated Parts Parts Page 24 Motor Mount Apply 94 421 34 grease to inside of motor coupler ...
Page 188: ...Illustrated Parts Parts Page 26 Wheels and Tires Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9 10 ...
Page 196: ...Illustrated Parts Parts Page 34 Lighting Stobe Light 4 1 2 3 5 6 7 ...
Page 206: ...Illustrated Parts Parts Page 44 Seat Cushions and Deck ...
Page 208: ...Illustrated Parts Parts Page 46 Mirrors 92 202 00 Assembly Miscellaneous Frame Components ...
Page 210: ...Illustrated Parts Parts Page 48 Decals ...
Page 212: ...Illustrated Parts Parts Page 50 Cab Options Steel Cab Fiberglass cab ...
Page 218: ...Illustrated Parts Parts Page 56 Hydraulic Dump Body Option ...
Page 220: ...Illustrated Parts Parts Page 58 Rear Cargo Box 1 2 3 4 5 6 5 Top Covers ...
Page 222: ...Illustrated Parts Parts Page 60 Hitches ...
Page 224: ...TAYLOR DUNN ...