The manual describes the 3501 as a "multi-function" tool. It acts as a Battery Discharge Indicator (BDI)
Controls the screen illumination or clears resettable trip values. Serial Communication
-40°C to 85°C (-40°F to 185°F).
Battery pack voltage exceeds the maximum allowable operating limit. curtis 3501 manual
Proper installation is critical for the long-term reliability of the instrument panel.
: Uses a 16-pin TYCO Mini Universal Mate-N-Lok for its main interface. Safety and Installation
The user interface often includes an LCD with fixed-segment bars and a 5-digit numeric display for clear data visualization. Beyond simple monitoring, the panel can be factory or user-defined to display specific vehicle diagnostics, status icons, and maintenance alerts, which are critical for safe vehicle operation and fleet management. Summary of Key Specs (Model 3501) Specification Operating Voltage 12V – 80V DC (9V to 100V range) Connectivity CANopen compatible Ingress Protection IP65 (Front), IP40 (Rear) Operating Temp –40°C to +70°C Primary Housing Black Polycarbonate Resin The manual describes the 3501 as a "multi-function" tool
: Dedicated logic level switch for external hydraulic fault codes.
Several technical document aggregators host copies of Curtis manuals, which can be very useful for quick reference.
The most authoritative source for the Curtis 3501 manual is the official website. Visit their main site and navigate to the "Support," "Downloads," or "Documentation" section. Use the product search to find the "Model 3501" where you should be able to download the latest user and installation manual in PDF format. Battery pack voltage exceeds the maximum allowable operating
To exit configuration completely, cycle to or cycle the physical keyswitch off and back on. Advanced BDI Profile Adjustments
Check the Keyswitch Input (PIN 7) for proper B+ voltage (12-80V).
Source: Curtis 3501 Datasheet
Applies system voltage to activate the display and enable the BDI calculation. Pin 4 E / Enable