Wesley BC-620-4CA - Manual (Page 117)

Curtis 1234/36/38 Manual,
OS
11 113
2 3 J U LY 2 0 0 8 D R A F T
8 — DIAGNOSTICS & TROUBLESHOOTING
Table 5 TROUBLESHOOTING CHART, continued
PROGRAMMER LCD DISPLAY
CODE
EFFECT OF FAULT
POSSIBLE CAUSE SET/CLEAR CONDITIONS
18 Severe Overvoltage
1. See Monitor menu » Battery: Set: Capacitor bank voltage exceeded
ShutdownMotor; Capacitor Voltage. the Severe Overvoltage limit (see page 55)
ShutdownMainContactor; 2. Battery menu parameters are with FET bridge enabled.
ShutdownEMBrake; misadjusted. Clear: Bring capacitor voltage below
ShutdownThrottle; 3. Battery resistance too high for given Severe Overvoltage limit, and then
FullBrake;
regen current. cycle KSI.
ShutdownPump.
4. Battery disconnected while regen braking.
22 Controller Overtemp Cutback 1. See Monitor menu » Controller: Set: Heatsink temperature exceeded 85°C.
Reduced drive and brake Temperature. Clear: Bring heatsink temperature below
torque. 2. Controller is performance-limited 85°C.
at this temperature.
3. Controller is operating in an extreme
environment.
4. Excessive load on vehicle.
5. Improper mounting of controller.
23 Undervoltage Cutback 1. Normal operation. Fault shows that Set: Capacitor bank voltage dropped below
Reduced drive torque. the batteries need recharging. the Undervoltage limit (see page 55) with
Controller is performance limited the FET bridge enabled.
at this voltage. Clear: Bring capacitor voltage above the
2. Battery parameters are misadjusted. Undervoltage limit.
3. Non-controller system drain on battery.
4. Battery resistance too high.
5. Battery disconnected while driving.
6. See Monitor menu » Battery:
Capacitor Voltage.
7. Blown B+ fuse or main contactor
did not close.
24 Overvoltage Cutback 1. Normal operation. Fault shows that Set: Capacitor bank voltage exceeded the
Reduced brake torque. regen braking currents elevated the Overvoltage limit (see page 55) with the
battery voltage during regen braking. FET bridge enabled.
Controller is performance limited Clear: Bring capacitor voltage below the
at this voltage. Overvoltage limit.
2. Battery parameters are misadjusted.
3. Battery resistance too high for given
regen current.
4. Battery disconnected while regen braking.
5. See Monitor menu » Battery:
Capacitor Voltage.
25 +5V Supply Failure 1. External load impedance on the Set: +5V supply (pin 26) outside the
None, unless a fault action +5V supply (pin 26) is too low. +5V±10% range.
is programmed in VCL. 2. See Monitor menu » outputs: Clear: Bring voltage within range.
5 Volts and Ext Supply Current.
26 Digital Out 6 Overcurrent 1. External load impedance on Digital Set: Digital Output 6 (pin 19) current
Digital Output 6 driver Output 6 driver (pin 19) is too low. exceeded 15 mA.
will not turn on. Clear: Remedy the overcurrent cause
and use the VCL function Set_DigOut()
to turn the driver on again.