Curtis 1212 Manual
33
7 — DIAGNOSTICS & TROUBLESHOOTING
7
DIAGNOSTICS AND TROUBLESHOOTING
The 1212 controller provides diagnostics information to assist technicians in
troubleshooting drive system problems. The diagnostics information can be
obtained in two ways: by reading the appropriate display on the handheld
programmer or by observing the fault codes issued by the status LED.
PROGRAMMER DIAGNOSTICS
The handheld programmer presents complete diagnostic information in plain
language. Faults are displayed in the Faults menu, and the status of the control
-
ler inputs/outputs is displayed in the Monitor menu.
Additionally, the fault history file in the Faults menu provides a list of the
faults that have occurred since the file was last cleared. Checking (and clear-
ing) the fault history file is recommended each time the vehicle is brought in
for maintenance.
Refer to the troubleshooting chart (Table 3) for suggestions about possible
causes of the various faults. Faults are listed alphabetically.
For information on 1311 programmer operation, see Appendix C.
LED DIAGNOSTICS
During normal operation, with no faults present, the status LED is steadily
on. If the controller detects a fault, the status LED flashes a fault identification
code continuously until the fault is corrected.
Refer to the troubleshooting chart (Table 3) for suggestions about possible
causes of the various faults. Faults are listed alphabetically.
Note: The status LED can only indicate one fault at a time. If multiple
faults are detected, the highest priority fault code flashes until it is cleared.
Three sets of fault codes are available. The Fault Code Type parameter
(Program » Misc » Fault Code Type) is used to select which set of fault codes
will be used: Type 0, Type 1, or Type 2. The codes are listed in Tables 2-0,
2-1, and 2-2.
FAULT HANDLING
When a fault is detected, the controller operates in a manner that is safe in the
presence of that fault. Depending on the severity of the fault, the response can
range from reduction of current to complete shutdown of drive.
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