Curtis 1238SE - Page 137

11 — DIAGNOSTICS AND TROUBLESHOOTING
pg. 133
Return to TOC Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE/38SE Manual, os 31 – May 2017
CODE
PROGRAMMER LCD DISPLAY
EFFECT OF FAULT
POSSIBLE CAUSE SET / CLEAR CONDITIONS
18 Severe KSI Overvoltage
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake.
1. Incorrect (to high) battery-voltage
applied to KSI (pin 1)
2. See Monitor menu » Battery: Keyswitch
Voltage.
Note: Prevents the Main Contactor closure if
KSI is greater than the Severe Overvoltage
limit.
Set: KSI voltage exceeded Severe Overvoltage limiit
Clear: Bring KSI voltage below the Severe
Overvoltage limit
(see page 25, Severe Overvoltage)
22 Controller Overtemp Cutback
Reduced drive and brake torque.
1. See Monitor menu » Controller:
Temperature.
2. Controller is performance-limited at this
temperature.
3. Controller is operating in an extreme
environment.
4. Excessive load on vehicle.
5. Improper mounting of controller.
Set: Heatsink temperature exceeded 85°C.
Clear: Bring heatsink temperature below 85°C.
23 B+ Undervoltage Cutback
Reduced drive torque.
1. Normal operation. Fault indicates the
batteries need recharging. Controller is
performance limited at this voltage.
2. Battery parameters are misadjusted.
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.
Set: Capacitor bank voltage dropped below the
Undervoltage limit (see page 25) with the FET
bridge enabled.
Clear: Bring capacitor voltage above the
Undervoltage limit.
24 B+ Overvoltage Cutback
Reduced brake torque. Note: This
fault is declared only when the
controller is running in regen.
1. Normal operation. Fault shows that regen
braking currents elevated the battery
voltage during regen braking. Controller
is performance limited at this voltage.
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.
Set: Capacitor bank voltage exceeded the
Overvoltage limit (see page 25) with the FET bridge
enabled.
Clear: Bring capacitor voltage below the
Overvoltage limit.
25 +5V Supply Failure
None, unless a fault action is
programmed in VCL.
1. External load impedance on the +5V
supply (pin 26) is too low.
2. See Monitor menu » outputs: 5 Volts and
Ext Supply Current.
Set: +5V supply (pin 26) outside the 5 V±10%
range.
Clear: Bring voltage within range.
26 Digital Out 6 Open/Short
Digital Output 6 driver will not
turn on.
1. External load impedance on Digital
Output 6 driver (pin 19) is too low.
Set: Digital Output 6 (pin 19) current exceeded 1
Amp.
Clear: Remedy the overcurrent cause and use the
VCL function Set_DigOut() to turn the driver on
again.
27 Digital Out 7 Open/Short
Digital Output 7 driver will not
turn on.
1. External load impedance on Digital
Output 7 driver (pin 20) is too low.
Set: Digital Output 7 (pin 20) current exceeded 1
Amp.
Clear: Remedy the overcurrent cause and use the
VCL function Set_DigOut() to turn the driver on
again.
Table 6 TROUBLESHOOTING CHART cont’d