TUG MZ Operation Maintenance & Parts Manual page 413

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