TUG MZ Operation Maintenance & Parts Manual page 416

8 — DIAGNOSTICS & TROUBLESHOOTING
PROGRAMMER LCD DISPLAY
CODE
EFFECT OF FAULT
Pot2 Wiper Low
44
FullBrake.
Pot Low Overcurrent
45
ShutdownThrottle;
FullBrake.
EEPROM Failure
46
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
ShutdownInterlock;
ShutdownDriver1;
ShutdownDriver2;
ShutdownDriver3;
ShutdownDriver4;
ShutdownPD;
FullBrake;
ShutdownPump.
HPD/Sequencing Fault
47
ShutdownThrottle.
Emer Rev HPD
47
ShutdownThrottle;
ShutdownEMBrake.
Parameter Change Fault
49
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake;
ShutdownPump.
51–67 OEM Faults
(See OEM documentation.)
116
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 » Inputs:
Pot2 Raw.
2. Pot2 wiper voltage too low.
1. See Monitor menu » Outputs:
Pot Low.
2. Combined pot resistance connected
to pot low is too low.
1. Failure to write to EEPROM
memory. This can be caused by
EEPROM memory writes initiated
by VCL, by the CAN bus, by
adjusting parameters with the
programmer, or by loading new
software into the controller.
1. KSI, interlock, direction, and throttle Set: HPD (High Pedal Disable) or
inputs applied in incorrect sequence.
2. Faulty wiring, crimps, or switches at
KSI, interlock, direction, or throttle
inputs.
3. See Monitor menu » Inputs.
1. Emergency Reverse operation has
concluded, but the throttle, forward
and reverse inputs, and interlock
have not been returned to neutral.
1. This is a safety fault caused by a
change in certain parameter
settings so that the vehicle will not
operate until KSI is cycled.
For example, if a user changes the
Throttle Type this fault will appear
and require cycling KSI before the
vehicle can operate.
1. These faults can be defined by the
OEM and are implemented in the
application-specific VCL code. See
OEM documentation.
SET/CLEAR CONDITIONS
Set: Pot2 wiper (pin 17) voltage
is lower than the low fault threshold
(can be changed with the VCL function
).
Setup_Pot_Faults()
Clear: Bring Pot2 wiper voltage
above the fault threshold.
Set: Pot low (pin 18) current exceeds 10mA.
Clear: Clear pot low overcurrent condition
and cycle KSI.
Set: Controller operating system tried to
write to EEPROM memory and failed.
Clear: Download the correct software (OS)
and matching parameter default settings
into the controller and cycle KSI.
sequencing fault caused by incorrect
sequence of KSI, interlock, direction, and
throttle inputs.
Clear: Reapply inputs in correct sequence.
Set: At the conclusion of Emergency
Reverse, the fault was set because various
inputs were not returned to neutral.
Clear: If EMR_Interlock = On, clear the
interlock, throttle, and direction inputs.
If EMR_Interlock = Off, clear the
throttle and direction inputs.
Set: Adjustment of a parameter setting
that requires cycling of KSI.
Clear: Cycle KSI.
Set: See OEM documentation.
Clear: See OEM documentation.
Curtis 1234/36/38 Manual,
Rev. D