Curtis 1226 - Page 87

8 — DIAGNOSTIC AND TROUBLESHOOTING
pg. 79
Return to TOC Curtis Model 1226 – September 2019
Table 33 Faults, cont’d
Code Fault and Fault Action Possible Causes Set and Clear Conditions
2,10
Main Driver
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• The main driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Note: This fault applies only to models with
external contactors.
Set: The Main Contactor driver is
either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,1
EMbrake Driver
ShutdownEMBrake
ShutdownThrottle
• The driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Set: The electromagnetic brake
driver is either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,2
Hydraulic Driver
Shut down the assigned driver
• The driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Set: The driver for the Hydraulic
contactor is either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,3
Load Hold Driver
Shut down the assigned driver
• The driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Set: The driver for the Load Hold
contactor is either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,4
AUX 1 Driver
Shut down the assigned driver
• The driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Set: The driver for the Aux 1
contactor is either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,5
AUX 2 Driver
Shut down the assigned driver
• The driver is open or shorted.
• The controller’s or contactor coil’s
connector pins are dirty.
• Bad connector crimps or faulty wiring.
Set:The driver for the Aux 2
contactor is either open or shorted.
Clear: Repair the wiring and
connections, then cycle the
keyswitch.
3,6
Encoder Fault
ShutdownEMBrake
ShutdownThrottle
ShutdownMotor
• Motor encoder failure.
• Bad connector crimps or faulty wiring.
Set: The controller detected a
motor encoder failure.
Clear: Check the crimps and
wiring, then cycle the keyswitch.
3,7
Motor Open
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• The motor phase is open.
• Bad crimps or faulty wiring.
Set: The controller detected that
the motor phase is open.
Clear: Make sure the motor
is connected to the M1 and
M2 connectors, then cycle the
keyswitch.
3,8
Main Contactor Welded
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• T he main contactor tips are welded
closed.
• Motor phase M1 or M2 is disconnected
or open.
• An alternate voltage path, such as
an external circuit to B+, is providing
current to the capacitor bank (B+
connection terminal).
Set: Prior to the main contactor
closing, the capacitor bank voltage
(B+ connection terminal) was
loaded via the motor for a short
time, but the voltage did not
discharge.
Clear: Address the possible
causes, then cycle the keyswitch.