114
Curtis 1298 Manual, OS 11
8 — DIAGNOSTICS & TROUBLESHOOTING
Table 5 TROUBLESHOOTING CHART
PROGRAMMER LCD DISPLAY
CODE
EFFECT OF FAULT
POSSIBLE CAUSE
SET/CLEAR CONDITIONS
12 Controller Overcurrent 1. External short of phase U,V, or W Set: Phase current exceeded the current
ShutdownMotor;
motor connections. measurement limit.
ShutdownMainContactor; 2. Motor parameters are mis-tuned.
Clear: Cycle KSI.
ShutdownEMBrake;
3. Controller defective.
ShutdownThrottle;
4. Speed encoder noise problems.
FullBrake;
ShutdownPump.
13 Current Sensor Fault
1. Leakage to vehicle frame from phase Set: Controller current sensors have
ShutdownMotor;
U, V, or W (short in motor stator). invalid offset reading.
ShutdownMainContactor; 2. Controller defective.
Clear: Cycle KSI.
ShutdownEMBrake;
ShutdownThrottle;
FullBrake;
ShutdownPump.
14 Precharge Failed 1. External load on capacitor bank (B+ Set: Precharge failed to charge the capacitor
ShutdownMotor;
connection terminal) that prevents bank to the KSI voltage.
ShutdownMainContactor; the capacitor bank from charging.
Clear: Cycle Interlock input or use VCL
ShutdownEMBrake;
2. See Monitor menu » Battery: function
Precharge().
ShutdownThrottle;
Capacitor Voltage.
FullBrake;
ShutdownPump.
15 Controller Severe Undertemp 1. See Monitor menu » Controller: Set: Heatsink temperature below -40°C.
ShutdownMotor;
Temperature. Clear: Bring heatsink temperature
ShutdownMainContactor; 2. Controller is operating in an extreme above -40°C, and cycle interlock or KSI.
ShutdownEMBrake;
environment.
ShutdownThrottle;
FullBrake;
ShutdownPump.
16 Controller Severe Overtemp 1. See Monitor menu » Controller: Set: Heatsink temperature above +95°C.
ShutdownMotor;
Temperature.
Clear: Bring heatsink temperature
ShutdownMainContactor; 2. Controller is operating in an extreme below +95°C, and cycle interlock or KSI.
ShutdownEMBrake;
environment.
ShutdownThrottle;
3. Excessive load on vehicle.
FullBrake;
4. Improper mounting of controller.
ShutdownPump.
17 Severe Undervoltage 1. Battery menu parameters are Set: Capacitor bank voltage dropped
Reduced drive torque.
misadjusted. below the Severe Undervoltage limit
2. Non-controller system drain on battery. (see page 55) with FET bridge enabled.
3. Battery resistance too high.
Clear: Bring capacitor voltage above
4. Battery disconnected while driving. Severe Undervoltage limit.
5. See Monitor menu » Battery:
Capacitor Voltage.
6. Blown B+ fuse or main contactor
did not close.