7 — DIAGNOSTICS AND TROUBLESHOOTING
Curtis AC F4-A Motor Controller – August 2020 Return to TOC
pg. 176
Table 18 Fault Code Troubleshooting Chart, cont’d
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
8-8
0x88
Encoder Pulse Error
Encoder_Pulse_Error_Active
0x2234
Fault Type(s): 1
1. Encoder Steps parameter does not
match the actual motor encoder.
2. Verify parameter settings: AC
Motor Setup » Quadrature Encoder
» Encoder Steps.
Set: Detected wrong setting of
the Encoder Steps parameter.
Clear: Ensure the Encoder
Steps parameter matches the
actual encoder.
Reset Controller.
ShutdownVehicle:
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
FullBrake
ShutdownPump
8-9
0x89
Parameter Out of Range
Parameter_Out_Of_Range_
Active
0x2811
Fault Type(s):
Reports the CAN Object ID of
parameter.
1. Parameter value detected outside
of the limits.
2. Use CIT or the 1313HHP to view
the parameter's range and adjust
the parameter’s value.
Set: Parameter detected
outside of limits.
Clear: Bring parameter within
its limits.
ShutdownVehicle:
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
FullBrake
ShutdownPump
9-1
0x91
Bad Firmware
Bad_Firmware_Active
0x2815
Fault Type(s): 1
The rmware in the controller is
incorrect.
1. The CRC of the application or OS
do not match.
2. The application was built with an
incompatible OS version.
Set: The Loaded software is not
compatible with the controller
hardware.
Clear: Load the matching
software.
Verify that the controller model
matches the cdev version for
the project and the VCL Studio
application.
Controller does not fully
startup (without error).
9-2
0x92
EM Brake Failed To Set
EM_Brake_Failed_to_Set_
Active
0x2321
Fault Type(s): 1
1. Vehicle movement sensed after the
EM Brake has been commanded
to set.
2. EM Brake will not hold the motor
from rotating.
Set: After the EM Brake was
commanded to set and time
has elapsed to allow the
brake to fully engage, vehicle
movement has been sensed.
Clear:
1. Activate the Throttle (EM
Brake type 2).
2. Activate the Interlock (EM
Brake type 1).
Position Hold is engaged
when Interlock = On.
Fault Action:
None, unless a fault action
is programmed in VCL.
9-3
0x93
Encoder LOS
Encoder_LOS_Active
0x2233
Fault Type(s): 1
1. Limited Operating Strategy (LOS)
control mode has been activated
as a result of either an Encoder
Fault (ash code 3-6) or a Stall
Detected fault (ash code 7-3).
2. Motor encoder failure.
3. Bad crimps or faulty wiring.
4. Vehicle has stalled.
Set: Either the Encoder Fault
(ash code 3-6) or Stall
Detected (ash code 7-3) was
detected. If the parameter LOS
Upon Encoder Fault = On and
the Interlock has been cycled,
then the Encoder LOS (ash
code 9-3) control mode is
activated, allowing limited motor
control (limp home mode).
Clear: Cycle KSI or, if LOS
Mode was activated by the
Stall Detected fault, clear
by ensuring the encoder
senses the proper operation,
Motor RPM = 0, and Throttle
Command = 0.
LOS Mode
Fault Action:
None, unless a fault action
is programmed in VCL.
9-4
0x94
Emer Rev Timeout
Emer_Rev_Timeout_Active
0x2330
Fault Type(s): 1
1. Emergency Reverse was activated
and concluded because the EMR
Timeout timer has expired.
2. The emergency reverse input is
stuck On.
Set: Emergency Reverse was
activated and ran until the EMR
Timeout timer expired.
Clear: Turn the emergency
reverse input (switch) to Off.
ShutdownThrottle
ShutdownEMBrake