Taylor-Dunn B0-T48-48 Taylor Truck T48, Operation, T Roubleshooting And Replacement Parts Manual

Page: 136 / 242

Sevcon Troubleshooting
Page 20
Electrical Troubleshooting
Smart View Fault Codes
Level 5 Faults (F05xxx)
F05000 “Contactor Over Current”
This faut occurs when too much current is going into
the line contactor coil circuit. This could be a result
of a shorted contactor coil, short in the wiring, or
faulty logic card.
F05004: “VA Fail”
This is a result of a low voltage on an internal voltage
regulator. Can also be caused by a low key switch input
voltage. If the key switch input is within specifications,
then replace the controller.
F05006: “MOSFET Short Circuit”
Also can be a result of an open motor armature circuit.
Confirm the motor armature and wires to the motor are
good. If motor and wires are good, then replace the
controller.
F05008: “Power Up Traction Welded”
Normaly due to line contactor welded closed resulting in
a high voltage at B+. This fault is generated when the
differential voltage between the key switch input and the
B+ terminal is less than approximatly 6-volts.
F05009: “Shorted MOSFET”
Normaly due to interal short in controller. Also could be
result of shorted motor or wiring. Remove the wire from
the controller terminal “S”. If fault clears then the short is
in the motor or wiring.
F05046: “Line Contactor Did Not Close”
Normaly due to open circuit to the controller B+ terminal.
Check wiring, contactor, main Circuit Breaker.
NOTE: Controller B+ terminal must be within 1.5 volts of
Pin 1 after contactor closes.
All other level 5 faults are a result of an internal failure
in the Sevcon controller and cannot be repaired.
The controller must be replaced.
Level 4 Faults (F04xxx)
F04001: “Contactor Welded”
High voltage at power up to the controller B+ terminal.
Check wiring, contactor, and pre-charge resistor on the
contactor.
F04002: “Steer Pot”
Steer Pot currently not used and this fault should not
occur. Check wiring.
F04003: “Sequence Fault”
Start-up switches not operated in the correct order or
fault in start-up switches or wiring. Refer to operator
section for correct operating sequence of switches.
F04004: “Two Directions Selected”
Both Forward and Reverse selected at the same time.
Check F&R switch and wiring.
F04005: “SRO”
Start-up switches not operated in the correct order or
fault in start-up switches or wiring. Refer to operator
section for correct sequence of switches. Normally a
result of F&R selected before start switch is turned on.
F04006: “Traction Seat”
Seat or foot interlock switch open. Check interlock
switch, wiring.
F04007: “Inch Switch”
Inch switch ON at power up; both switches selected at
same time; inching attempted with seat interlock, F&R
switch, or FS-1 closed.
F04008: “Steer”
Steer Function currently not used and this fault should
not occur. Check wiring.
F04009: “Low Battery”
Low voltage at Pin 1 of controller connector. Normally a
result of discharged batteries. Check wiring, start switch,
interlock switches, batteries.
F04010: “High Battery”
High voltage at Pin 1 of controller connector. Check for
correct voltage battery installed, check controller
parameters.
F04011: “Personality Range”
One or more controller personalities are out of range.
Correct parameters must be uploaded to the controller.
F04012’: “Personality CRC”
Controller personalities are corrupted. Could be a
result of a damaged logic card. Attempt uploading
new parameters. If upload fails, then controller must
be replaced.
F04013: “Capacitor high”