Curtis 3501 Manual [updated] Jun 2026

The Curtis 3501 utilizes high-frequency MOSFET switching to deliver smooth, silent, and cost-effective speed and torque control. It is commonly implemented in mobility scooters, small material-handling walkies, and golf cars. Key Technical Attributes Permanent Magnet (PM) brushed DC motors. Operating Frequency: 15–16 kHz for silent operation.

If no faults are present, go to the . Activate physical controls (press the accelerator, flip the forward switch).

Blow off dust and debris using compressed air. Do not pressure-wash the controller directly. curtis 3501 manual

Tracks total equipment runtime. A flashing hourglass icon indicates that the unit is successfully counting time based on an active input signal on the enable pin.

Battery pack voltage exceeds the maximum allowable operating limit. The Curtis 3501 utilizes high-frequency MOSFET switching to

Dictates how quickly the vehicle coasts down when the throttle is completely released. 0.2s – 5.0s 1.0s (Moderate stopping distance)

5kΩ–0 resistive throttles, 0–5V voltage throttles, or ITS (Inductive Throttle Sensor) inputs. Operating Temperature: -40°C to 50°C (-40°F to 122°F). 2. Installation and Safety Guidelines Operating Frequency: 15–16 kHz for silent operation

For a throttle: Measure resistance across the throttle input pins. It should transition smoothly from roughly 5,000 ohms at rest down to 0 ohms at full pedal depress.

The Curtis 3501 manual dedicates a significant portion to safety, and for good reason. Working with industrial battery systems involves high current and risk of arc flash.

Even with the manual in hand, many technicians skip the verification step. Here is the precise procedure derived from the Curtis 3501 manual.