Manual — Curtis 3501

Fully CANopen compatible for integration into modern vehicle networks.

Always disconnect the main battery pack positive (+) and negative (-) cables before working on the controller.

The Curtis 3501 is often confused with Curtis Instruments’ battery gauges (like the 3501 Curtis LCD battery discharge indicator for forklifts/golf carts). If your device is actually a multimeter , make sure to clarify that in your post. If it’s the battery indicator , try searching for: “Curtis 3501 battery gauge manual” or “Curtis 900R manual” (related series).

You must assume that any vehicle you service could move unexpectedly. follow this protocol:

EV batteries can supply massive amounts of power and will arc violently if short-circuited. curtis 3501 manual

From behind the dashboard or panel, slide the mounting U-bracket or retaining collar over the meter body. Tighten the securing nuts or screws evenly until the gasket compresses slightly against the panel. Do not overtighten, as this can crack the plastic housing. Wiring Configurations and Pinouts

A multi-pin plastic connector manages the logic signals. Standard configurations include:

Does anyone have a PDF or scan of the user manual for a Curtis 3501 ? I picked one up secondhand (digital multimeter/clamp meter) and can’t figure out a few of the functions/symbols.

Adjusts the maximum current the controller will deliver to the motor. Lowering this value protects delicate gearboxes. Fully CANopen compatible for integration into modern vehicle

The Curtis 3501 can be programmed using a handheld Curtis 1313 Programmer or the Curtis 1314 PC Programming Station software. This allows technicians to customize vehicle performance characteristics. Critical Programmable Parameters

Before modifying any wiring or replacing components, verify that your system matches the electrical limits of your specific Curtis 3501 model variant.

When servicing, the same high-voltage precautions for any electric vehicle apply. Always:

Designed for modern vehicle architectures, the 3501 provides , offering flexibility in how it connects to other systems. The front panel is rated IP65, making it resistant to dust and water jets, which is crucial for outdoor and industrial environments. The unit features a reliable solid-state design and is available in panel-mount or behind-panel mounting options. If your device is actually a multimeter ,

Provides full control over motoring and regenerative braking in both forward and reverse directions.

Includes 5 push-buttons and 6 LEDs for operator interaction and status alerts.

The Ultimate Guide to the Curtis 3501 Controller: Manual, Troubleshooting, and Setup

High Pedal Disable (HPD). The throttle was applied before the keyswitch or interlock switch was turned on.