Taylor-Dunn B0-248-48AC Operation, T Roubleshooting And Replacement Parts Manual

Also see for B 2-48: Operation, t roubleshooting and replacement parts manual

Contents

Taylor-Dunn B0-248-48AC Operation, T Roubleshooting And Replacement Parts Manual Manual pdf 137 page image

Electrical TroubleshootingTroubleshooting Page 3Status LED Code TableThe status LED’s on the speed controller can beused to give you an idea of where the problem maybe. During normal operation (no faults) the yellowLED will be flashing steady.When the controller senses a fault the two LED’scan be used to determine the fault code. The faultcode will be a two digit code. The red LED signifieswhich digit and the yellow LED signifies the faultcode. For example: When the red LED flashes once,the yellow LED will be flashing the first digit. Whenthe red LED flashes twice, the yellow LED will beflashing the second digit. The fault code will repeatuntil the fault is corrected.Typical location of Status LED’sCode Handset DisplayEffect of FaultPossible Cause Note12 Controller OvercurentShutdown 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 FaultShutdown of main contactor;Shutdown of motor;Shutdown of EM brake.1. Short or leakage to frame from motorwindings or wiring.2. Controller defective14 Precharge FailedShutdown of main contactor;Shutdown of motor;Shutdown of EM brake.1. External load attached to controllerB+ terminal.Possible non-factoryinstalled device15 Controller Severe UndertempShutdown of main contactor;Shutdown of motor;Shutdown of EM brake;Shutdown throttle;Full Brake.1. Vehicle operated in temperaturesbelow -40ºC.16 Controller Severe OvertempShutdown of main contactor;Shutdown of motor;Shutdown of EM brake;Shutdown throttle;Full Brake.1. Vehicle operated in extreme highambient temperatures.2. Vehicle overloaded.3. Controller not properly mounted.Controller overheated(+95ºC)17 Severe UndervoltageReduced drive torque.1. Blown circuit breaker.2. Battery failure while in operation.18 Severe OvervoltageShutdown 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 CutbackReduced motor torque.1. Controller operated in temperaturesbelow -25ºCController output isreduced below -25ºC22 Controller Overtemp CutbackReduced drive and brake torque.1. Vehicle operated in extreme highambient temperatures.2. Vehicle overloaded.3. Controller not properly mounted.Controller overheated(+85ºC)23 Undervoltage CutbackReduced drive torque.1. Batteries discharged.2. Battery failure.