7 — TROUBLESHOOTING
pg. 23
Curtis 1232E/34E/36E/38E/39E & 1232SE/34SE/36SE/38SE Manual, os 31 – May 2017
CODE
PROGRAMMER LCD DISPLAY
EFFECT OF FAULT
POSSIBLE CAUSE
SET / CLEAR CONDITIONS
35
PD Open/Short
ShutdownPD.
Other controller:
Same effects as this controller.
1. Open or short on driver load.
2. Dirty connector pins.
3. Bad crimps or faulty wiring.
Set:
Proportional driver (pin 2) is either open or
shorted.
Clear:
Correct open or short, and cycle driver.
36
Encoder Fault
SevereDual;
Motor disabled.
Other controller:
TrimDisable;
SevereDual;
LOSDual.
1. Motor encoder failure.
2. Bad crimps or faulty wiring.
3. See Monitor menu » Motor: Motor RPM.
Set:
Motor encoder phase or signal failure detected.
Clear:
Either cycle KSI, or controller detects valid
motor encoder signals while operation in LOSDual
mode and return Throttle Command = 0 and Motor
RPM = 0.
36
Sin/Cos Sensor Fault
ShutdownEMBrake;
ShutdownThrottle.
Other controller:
None.
1. Sin/cos sensor failure.
2. Bad crimps or faulty wiring.
3. See Monitor menu » Motor: Motor RPM.
Set:
Greater than Sin_Cos_Fault_Threshold %
difference from expected value between two phases
seen 5 times within one second.
Clear:
Cycle KSI, or VCL reset.
37
Motor Open
ShutdownMotor;
SevereDual.
Other controller:
SevereDual;
LOSDual;
TrimDisable.
1. Motor phase is open.
2. Bad crimps or faulty wiring.
Set:
Motor phase U, V, or W detected open.
Clear:
Cycle KSI.
38
Main Contactor Welded
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake.
Other controller:
Same effects as this controller.
1. Main contactor tips are welded closed.
2. Motor phase U or V is disconnected or
open.
3. An alternate voltage path (such as an
external precharge resistor) is providing
a current to the capacitor bank (B+
connection terminal).
Set:
Just prior to the main contactor closing, the
capacitor bank voltage (B+ connection terminal)
was loaded for a short time and the voltage did not
discharge.
Clear:
Cycle KSI
39
Main Contactor Did Not Close
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake.
Other controller:
Same effects as this controller.
1. Main contactor did not close.
2. Main contactor tips are oxidized, burned,
or not making good contact.*
3. External load on capacitor bank (B+
connection terminal) that prevents
capacitor bank from charging.
4. Blown B+ fuse.
Set:
With the main contactor commanded closed,
the capacitor bank voltage (B+ connection terminal)
did not charge to B+.
Clear:
Cycle KSI.
*New contactors may need to be cycled electrically &
mechanically to remove any non-conductive material
on the tips. Use reduced voltage (e.g., 12V) to prevent tip
damage through excessive arcing.
41
Throttle Wiper High
ShutdownThrottle.
Other controller:
Same effects as this controller.
1. See Monitor menu » Inputs: Throttle Pot.
2. Throttle pot wiper voltage too high.
Set:
Throttle pot wiper (pin 16) voltage is higher
than the high fault threshold (can be changed with
the VCL function
Setup_Pot_Faults()
).
Clear:
Bring throttle pot wiper voltage below the
fault threshold.
42
Throttle Wiper Low
ShutdownThrottle.
Other controller:
Same effects as this controller.
1. See Monitor menu » Inputs: Throttle Pot.
2. Throttle pot wiper voltage too low.
Set:
Throttle pot wiper (pin 16) voltage is lower than
the low fault threshold (can be changed with the
VCL function
Setup_Pot_Faults()
).
Clear:
Bring throttle pot wiper voltage above the
fault threshold.
Table 2 DUAL DRIVE TROUBLESHOOTING CHART cont'd
