Curtis 1520 Controller Manual Site

Forward switch input (+V to trigger forward direction).

relies on advanced MOSFET technology to provide smooth, silent, and cost-effective control of motor speed and torque. Specification Current Rating (Peak) 500 Amperes Motor Type Separately Excited (SepEx) DC Shunt Motor Logic Input Current Weight 3.6 kg (approx. 7.9 lbs) Operating Temp Range -20°C to +60°C Environmental Protection Rugged, moisture-resistant casing (IP65 rated mechanics) Pre-Installation Inspection & Safety Checklist Before replacing or installing a Curtis 1520 controller curtis 1520 controller manual

Ensure the wire harnesses are firmly seated and that the rubber gaskets are intact to maintain the IP65 rating. Forward switch input (+V to trigger forward direction)

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Common issues with this controller often involve peripheral components: Solenoid/Wiring: Verify the solenoid clicks and that the Keyswitch Input (KSI) receives at least 16.8V. Pedal Sensor:

The Curtis 1520 features a built-in diagnostic subsystem. If a fault occurs, the controller will flash a sequence via its status LED (or display a text error on a handheld programmer). The flash codes consist of two digits (e.g., Flash Code 1,2 represents a hardware failure). Flash Code Fault Description Potential Causes Recommended Action Normal Operation Controller is running properly. No action required. 1,1 Thermal Cutback Over-temperature or under-temperature. Allow controller to cool down; check heatsink mounting. 1,2 Throttle Fault Throttle input wire is broken or shorted. Check throttle pot and wiring connections. 2,1 Low Battery Voltage Battery voltage dropped below the limit. Charge the batteries; check for loose battery terminals. 2,2 High Battery Voltage Battery voltage exceeded the limit. Check for overcharging or improper battery configuration. 3,1 Main Contactor Driver Contactor coil is open or shorted. Inspect main contactor wiring and coil resistance. 4,1 Low Motor Current Motor circuit is open or disconnected. Check motor brushes and power cables. 4,2 EEPROM Fault Internal controller memory error.