8 — DIAGNOSTIC AND TROUBLESHOOTING
pg. 81
Return to TOC Curtis Model 1226 – September 2019
Table 33 Faults, cont’d
Code Fault and Fault Action Possible Causes Set and Clear Conditions
4,5
LED Driver 1
ShutdownLED1Driver
• The driver is shorted to B–.
• Driver overcurrent.
• Defective hardware.
Set: The driver is shorted or is
consuming more than 30mA.
Clear: Address the possible
causes, then cycle the keyswitch.
4,6
LED Driver 2
ShutdownLED2Driver
4,7
LED Driver 3
ShutdownLED3Driver
4,8
Horn Driver
ShutdownHorn
• The driver is shorted.
• Driver overcurrent.
Set: The horn is shorted to B–
when the horn driver is congured
as a high side driver or to B+ when
congured as a low side driver or
is consuming more than 30mA.
Clear: Address the possible
causes, then cycle the keyswitch.
4,9
BB Wiring Fault
ShutdownThrottle
ShutdownEMBrake
ShutdownMainContactor
Bad crimps or faulty wiring for the emergency
reverse normally open switch.
Note: For information on the belly button
check, see page 20.
Set: The wire connecting Driver
2 and the emergency reverse
normally open switch is broken.
Clear: Fix the wiring, then cycle the
keyswitch.
4,10
Emer Rev HPD
ShutdownThrottle
ShutdownEMBrake
The throttle, direction, and interlock inputs
were not returned to neutral after an
emergency reverse operation.
Set: The operator attempted to
drive after an emergency reverse
without rst clearing the throttle,
direction, and interlock inputs.
Clear: If the EMR Dir Interlock
parameter’s value is On, clear the
interlock, throttle, and direction
inputs. Otherwise, clear the throttle
and direction inputs.
5,2
Parameter Change Fault
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
A parameter marked as [PCF] was changed
but the keyswitch was not cycled.
Set: A parameter that requires
the keyswitch to be cycled has
changed.
Clear: Cycle the keyswitch.
5,3
EMR Switch Redundancy
ShutdownInterlock
ShutdownEMBrake
• Either or both Emergency Reverse input
switches are inoperative, resulting in an
invalid state. See Table 18.
• There is dirt or moisture in the switches.
Set: The emergency reverse NO
and NC switches are in an invalid
state.
Clear: Address the possible
causes, then cycle the keyswitch.
5,8
Stall Detected
ShutdownEMBrake
ShutdownThrottle
ShutdownMotor
The motor has stalled. Set: The controller did not detect
motor movement.
Clear: Cycle the keyswitch.