Kohler Curtis AC F2-C User Manual

7 — DIAGNOSTICS AND TROUBLESHOOTING
Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022 Return to TOC
pg. 218
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
3-5
0x35
Lower Driver Fault
Lower_Driver_Fault
0x2440
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.
Note:
See Driver 1* Fault
* Driver 1 is the PD Driver,
therefore the Lower Driver fault
cascades to the Driver 1 fault
(see flash code 10-1).
Set: The assigned lower driver
is either open or shorted, or
exceeded its overcurrent setting.
Clear: Correct the open or short,
and then Reset Controller.
ShutdownPD
Dual Drive
This Motor:
Same
Other Motor:
Same
3-6
0x36
IM MOTOR FEEDBACK
IM_Motor_Feedback
0x2230
Fault Type(s):
1. Controller saw a fast
transition to zero speed.
2. Encoder supply failed.
3. Sine or Cosine input differs
from expected.
4. Controller saw sensor failure
at speed.
5. Unrealistic motor
acceleration seen.
6. Resolver loss of signal.
7. Resolver degradation of signal.
8. Resolver loss of tracking.
1. Motor encoder failure.
2. Bad crimps or faulty wiring.
3. See Programmer » System Monitor
menu » AC Motor: Motor RPM.
4. See Programmer » AC Motor Setup
» Quadrature Encoder » Encoder
Fault Setup.
Set: Motor position/speed
sensor fault.
Clear: Either Reset Controller, or
if parameter LOS Upon Encoder
Fault = On and Interlock has
been cycled, then the Encoder
Fault is cleared and Encoder
LOS fault (flash code 9-3) is
set, allowing limited motor
control.
ShutdownEMBrake
ShutdownMotor
Dual Drive
This Motor:
SevereDual
ShutdownMotor
Other Motor:
SevereDual
LOSDual
TrimDisable
Table 24 Fault Code Troubleshooting Chart, cont’d

Kohler Curtis AC F2-C Specifications

General

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