This appears when the controller detects the throttle is not at the zero position when the keyswitch is turned on.
The manual is your bible for every connector pin, LED blink code, and software parameter.
Some of the specific topics covered in the Curtis 1520 controller manual include:
The Curtis 1520 features a built-in diagnostic LED (or communicates fault codes through the handheld programmer). Fault codes are typically presented as a two-digit flashing pattern (e.g., Flash, Pause, Flash-Flash indicates Code 12). Common Fault Codes and Solutions Programmer Diagnostic Potential Cause Troubleshooting Steps Normal operation. Controller is active and waiting for a command. 1, 2 Hardware Failsafe Internal controller error or voltage mismatch. Cycle the keyswitch. Check internal contactor drivers. 2, 1 Throttle Wiper Fault Input voltage from the throttle is out of range. curtis 1520 controller manual
Avoid random PDF hosting sites (scribd, manualslib) for the 1520. Outdated or incorrect revisions have resulted in bricked controllers.
or 1515), making it ideal for uphill torque and heavier loads Quick Specifications 48 Volts nominal. Current Rating: 500 Amperes. Motor Type: Designed for Shunt/SepEx motors; it will work with series-wound motors. Throttle Support:
If your vehicle isn't moving, check these common failure points: This appears when the controller detects the throttle
If an external status LED is connected, it will flash specific fault codes (e.g., Code 34 indicates a field winding fault). Made-in-China.com
Eliminates the need for external reversing contactors or relays. Regenerative Braking: Provides high torque braking and energy recovery. Programmable: Compatible with the Curtis Model 1313 Handheld Programmer 1314 PC Programming Station Safety Protections:
Defines how aggressively the vehicle responds to throttle input. Fault codes are typically presented as a two-digit
Periodically check that all high-current terminals are tight, as loose connections can cause excessive heat and failure.
The Curtis 1520 is a high-performance DC motor controller that features a compact and rugged design. It is capable of controlling motors with currents up to 150A and voltages up to 24V. The controller includes a range of features, such as: