To Next PageTo Next PageWhat to do if Curtis 1226 Controller displays NV memory failure?
If the Curtis Controller displays an 'NV Memory Failure', it means there's a failure to read or write to nonvolatile (NV) memory, or there's an internal controller fault. Download the correct firmware and default parameter settings, then cycle the keyswitch.
What does 'HPD/Sequencing Fault' mean on a Curtis 1226 and how to fix it?
An 'HPD/Sequencing Fault' on a Curtis Controller indicates that the keyswitch, interlock, direction, and throttle switches were not applied in the correct order, or there's faulty wiring/switches, or moisture in the switches. Cycle the switches in the correct order as described in Understanding the HPD/SRO Function or check the wiring and for moisture, then cycle the switches in the correct order.
What does Curtis 1226 current sensor shutdown mean?
If the Curtis Controller shows a 'Current Sensor Shutdown' error, it means the controller is defective. Cycle the keyswitch.
Why Curtis 1226 Controller shows parameter change fault?
A 'Parameter Change Fault' on your Curtis Controller indicates that a parameter marked as [PCF] was changed, but the keyswitch was not cycled. Cycle the keyswitch.
What does Ext 5V Supply Failure mean on Curtis Controller?
An 'Ext 5V Supply Failure' on the Curtis Controller means the external load impedance on the 5V power supply is too low. Adjust the external load and cycle the keyswitch.
What does Ext 14V Supply Failure mean on Curtis Controller?
An 'Ext 14V Supply Failure' on the Curtis Controller means the external load impedance on the 14V power supply is too low. Adjust the external load and cycle the keyswitch.
What to do if Curtis 1226 Controller displays controller severe undertemp?
If your Curtis Controller is showing a severe undertemp error, it means the controller is operating in an extremely cold environment. Raise the heatsink temperature to above –40°C, then cycle the keyswitch.
What could cause a motor temp sensor fault in a Curtis Controller?
A motor temp sensor fault in a Curtis Controller could be due to an incorrectly connected motor thermistor, incorrect sensor polarity between pins J1-5 and J1-6, or incorrectly configured motor temperature and sensor parameters. Address the possible causes.
General| Brand | Curtis |
|---|---|
| Model | 1226 |
| Category | Controller |
| Language | English |
Details on M5 bolt-on terminals for battery and motor connections.
Information on the 3 low-current connectors (J1, J2, J3).
Representative wiring diagram for typical Class III vehicle applications.
Overview of flexible I/Os and predefined functions for applications.
Information on the 3 generic drivers supporting PWM and different modes.
How analog inputs support throttle potentiometer circuits.
Contains menus for configuring application-specific settings.
Parameters to configure speed-related functions like max/min speeds.
Parameters to configure two distinct speed modes for different conditions.
Defines high and low speed thresholds for various parameters.
Specifies throttle type, responsiveness, and HPD/SRO function.
Explains deadband, max, offset, and map parameters affecting throttle response.
Explains High Pedal Disable and Static Return to Off safety functions.
Menus for battery voltage monitoring and protection settings.
Parameters for configuring the Battery Discharge Indicator (BDI) output.
Configuration options for the emergency reverse feature.
Detailed configuration for the emergency reverse safety function.
Contains menus for configuring inputs, outputs, and limits.
Menus for configuring analog inputs 1 through 5.
Assigns functions to switches and controls for analog inputs.
Sets maximum current limits for drive, boost, regen, and brake operations.
Configuration for motor resistance, current rating, and speed settings.
Steps for preparing the vehicle before controller programming.
Procedures to set up the throttle type and ensure full range operation.
Tuning the throttle's deadband for proper neutral range and brake engagement.
Setting wiper voltage to achieve 100% controller output at full throttle.
Verifying correct throttle operation and polarity for reverse features.
Checking critical parameters and switch states for correct configuration.
Procedure to accurately set the System Resistance parameter for performance.
Setting speed limit pot maximum and minimum positions for each speed mode.
Configuring acceleration and deceleration rates for smooth throttle response.
Configuring IR Comp and Anti-Rollback Comp for load and slope conditions.
Adjusting Gear Soften and Soft Start for smoother vehicle response.
Testing and fine-tuning the BDI configuration for accuracy.
Using programming devices to view real-time data and faults.
Explains fault code structure and how LEDs indicate digits.
Guidance on interpreting faults and their causes and actions.
