Kohler Curtis AC F2-C User Manual

7 — DIAGNOSTICS AND TROUBLESHOOTING
pg. 215
Return to TOC Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
Table 24 Fault Code Troubleshooting Chart, cont’d
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
2-8
0x28
Motor Temp Hot Cutback
Motor_Temp_Hot_Cutback
0x2151
Fault Type(s): 1
1. Motor temperature is at or above
the programmed Temperature Hot
setting—resulting in a reduction of
controller drive current.
2. The motor temperature and
sensor control parameters are
misadjusted.
3. See Programmer » AC Motor Setup
» Temperature Sensor.
Set: Motor temperature is at
or above the Temperature Hot
parameter setting.
Clear: Bring the motor
temperature within range.
Reduced Drive Torque.
If MotorBrakingThermal
CutBack_Enable = On,
then Regen Braking
Torque is reduced.
Fault Action:
None, unless a fault action
is programmed in VCL.
Dual Drive
This Motor:
TrimDisable
Other Motor:
TrimDisable
2-9
0x29
Motor Temp Sensor
Motor_Temp_Sensor
0x2150
Fault Type(s): 1
1. Motor thermistor is not
connected properly.
2. Sensor polarity (between Pin 8 and
Pin 18) is incorrect.
3. The motor temperature and sensor
parameters are misadjusted.
4. See Programmer » System Monitor
menu » AC Motor » Temperature.
Set: Motor thermistor input (pin
9) is at the voltage rail.
Clear: Bring the motor thermistor
input voltage within range.
Motor temperature
cutback disabled.
Fault Action:
None, unless a fault action
is programmed in VCL.
Dual Drive
This Motor:
LOSDual
Other Motor:
LOSDual
3-1
0x31
MAIN DRIVER
Main_Driver_Fault
0x2222
Fault Type(s):
1 = Driver current exceeded
hardware limits.
2 = Driver current exceeded
congured over-current limits.
3 = Driver commanded PWM
active, using diagnostic
pulses. Voltage measured
high, should be low. Typically
caused by driver failure, or
driver pin short to high.
4 = Driver commanded PWM
active, using diagnostic
pulses. Voltage measured
low, should be high. Either
open circuit, or driver pin
short to ground.
5 = Driver commanded PWM
is 0, and voltage measured
low (should be high). Either
open circuit, or driver pin
short to ground.
7 = Driver undercurrent -
Monitored current is below
undercurrent threshold.
Fault types 1-2 are
always checked.
Fault types 3-5 are only checked
if driver checks are enabled.
1. Open or short on driver load.
2. Dirty connector pins at controller
or contactor coil.
3. Bad connector crimps or faulty
wiring.
4. Driver overcurrent, as set by the
Driver x Overcurrent parameter.
5. See Programmer » Controller
Setup » Outputs » Driver x »
Driver x Overcurrent.
Set: Main Contactor driver is
either open or shorted.
This fault can be set only when
Main Enable = On.
Clear: Restore/repair any
external wiring or device-coil
to their correct state, then
Reset Controller.
ShutdownVehicle:
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
FullBrake
ShutdownPump
Dual Drive
This Motor:
ShutdownVehicle
Other Motor:
ShutdownVehicle

Kohler Curtis AC F2-C Specifications

General

Brand	Kohler
Model	Curtis AC F2-C
Category	Controller
Language	English