To Next PageTo Next PageWhat does Coil Short/Driver Fault mean on Curtis Controller?
A Coil Short/Driver Fault on a Curtis Controller indicates: * The main contactor coil is shorted. * The internal driver transistor is shorted. To resolve this, check the connections and replace the main contactor if necessary.
What causes Under Voltage Cutoff on Curtis 1221M?
Under Voltage Cutoff on a Curtis Controller occurs when the battery voltage is at or below the programmed Under Voltage Cutoff threshold. To resolve this, ensure the battery voltage rises above the Under Voltage Cutback threshold.
What does Main Contactor DNC mean on Curtis Controller?
Main Contactor DNC (Did Not Close) on a Curtis Controller means that the voltage difference between KSI and the B+ busbar is less than the main contactor DNC threshold.
What to do if Curtis 1221M Controller has a Main Driver Fault?
If the Curtis Controller has a Main Driver Fault, it means the main contactor driver is broken. Replace the defective controller.
General| Brand | Curtis |
|---|---|
| Model | 1221M |
| Category | Controller |
| Language | English |
Highlights critical safety warnings for working with electrical systems, high currents, and batteries.
Step-by-step guide to verify correct installation and operation before vehicle use.
Configuration settings for battery voltage, undervoltage cutback, and cutoff.
Settings for main current limit and plug braking current limit.
Parameters controlling acceleration rate, max speed, and reverse speed.
Settings for throttle type, deadband, max throttle, and response mapping.
Includes settings for HPD, Boost, Contactor Protection, and other functions.
Explains how to interpret fault codes indicated by the Status LED.
Provides a detailed chart of faults, effects, recovery, and possible causes.
