The Curtis 1520 operates on specialized high-frequency switching technology to ensure smooth motor control. 24V to 36V DC nominal systems.
Digital signals that dictate the direction of the motor. 3. Programming and Parameter Tuning
Output connection to the negative terminal of the motor. Low-Power Logic Pins (Multi-pin Connector)
The Curtis 1520 can be customized using a Curtis 1313 Handheld Programmer or the 1314 PC Programming Station. Modifying these parameters allows you to tune the vehicle’s driving dynamics. Acceleration & Deceleration Rates
Recommended 0.75 mm² (#18 AWG) stranded wire. Pin Configuration (Common to 1268/1520 series): Pin 8: Keyswitch input. Pin 9: Logic Ground. Pin 15: Throttle Input. Pin 19: Reverse Buzzer. Programming and Diagnostics curtis 1520 controller manual
Determines the coasting behavior when the throttle is fully released. 2. Braking Parameters
Three wires dedicated to translating the accelerator pedal position into a voltage signal.
24V or 36V DC (depending on the specific model variant).
The Curtis 1520 can be programmed using a Curtis 1313 handheld programmer or the 1314 PC programming software. Key Adjustable Parameters Modifying these parameters allows you to tune the
| Pin | Signal | Description | |-----|----------------|----------------------------------------------------| | 1 | B+ (Logic Power)| +48V (switched via keyswitch) | | 2 | B- (Logic GND) | Ground for logic circuits | | 3 | Throttle Wiper | 0-5V analog input from accelerator pedal | | 5 | Interlock | Seat switch or operator presence (must be high) | | 8 | Encoder A | Motor speed feedback (differential) | | 9 | Encoder B | Motor speed feedback | | 14 | CAN-H | CANbus high (500kbps typical) | | 15 | CAN-L | CANbus low | | 21 | Main Contactor | Coil driver output (low side) | | 28 | Status LED | Blink code output for diagnostics |
Apply a light coat of dielectric grease to logic pins to repel moisture and prevent oxidation.
Position the unit where it is protected from direct water spray, heavy dust accumulation, and mechanical impact.
Operates at 48V (default) or 36V with a peak current rating of 500A. 1520-4501 vs 1520-4803).
Determines how fast the vehicle accelerates.
Standard switches that dictate motor directional logic.
Reverse switch input (+V to trigger reverse direction).
| Parameter | Value / Detail | |-----------|----------------| | | 0–5kΩ pot (standard) or 0–5V (requires programming) | | Main contactor | 150A continuous minimum (Albright SW200 or similar) | | Undervoltage cutback | ~31V (36V system) / 42V (48V system) | | Overvoltage cutoff | ~60V | | Thermal protection | Reduces current if heatsink > 85°C | | Fusing | Recommended 300A–400A class T or ANL |
Note: These are illustrative—always verify against your specific model number (e.g., 1520-4501 vs 1520-4803).