Curtis 1226 User Manual

8 — DIAGNOSTIC AND TROUBLESHOOTING
pg. 77
Return to TOC Curtis Model 1226 – September 2019
Table 33 Faults
Code Fault and Fault Action Possible Causes Set and Clear Conditions
1,2
Controller Overcurrent
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• External short of phase M1 or M2 motor
connections.
• The controller is defective.
Set: The phase current exceeds the
current limit.
Clear: Check the connections, then
cycle the keyswitch.
1,3
Current Sensor
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
The controller is defective. Set: The controller’s current
sensors have invalid offset
readings.
Clear: Cycle the keyswitch.
1,4
Precharge Failed
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• An external load on the capacitor bank
(Brake+ connection terminal or B+
connection terminal for the external
contactor model) prevents the capacitor
bank from charging.
• The controller is defective
Set: The precharge failed to charge
the capacitor bank.
Clear: Cycle the keyswitch.
1,5
Controller Severe Undertemp
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
The controller is operating in an extremely
cold environment.
Set: The heatsink temperature is
below –40°C.
Clear: Raise the heatsink
temperature to above –40°C, then
cycle the keyswitch.
1,6
Controller Severe Overtemp
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
The controller is operating in an extremely hot
environment.
Set: The heatsink temperature is
above 85°C.
Clear: Decrease the heatsink
temperature to below 85°C, then
cycle the keyswitch.
1,7
Severe B+ Undervoltage
Current limit decreases to 0
• A system other than the controller is
draining the battery.
• The battery resistance is too high.
• The battery is disconnected.
• The B+ fuse is blown.
• The main contactor did not close.
• Undervoltage parameters are incorrectly
congured.
Set: The voltage is below the
Severe Undervoltage threshold.
Clear: Address the possible
causes, then cycle the keyswitch.
1,9
Severe B+ Overvoltage
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
• The user overvoltage parameter is
incorrectly congured.
• The battery resistance is too high for the
regen current.
• The battery disconnected during regen
braking.
Set: The voltage is above the
Severe Overvoltage threshold.
Clear: Address the possible
causes, then cycle the keyswitch.
2,3
Controller Overtemp Cutback
Reduced drive torque
Reduced regen braking
torque
• The controller is operating in an
extremely hot environment.
• There is excessive load on the vehicle.
• The controller is incorrectly mounted, which
is preventing the controller from cooling.
Set: The controller’s heatsink
temperature exceeded 75°C.
Clear: Address the possible
causes.

Curtis 1226 Specifications

General

Brand	Curtis
Model	1226
Category	Controller
Language	English