Curtis 3501 Manual -

The Curtis 3501 may be a small, unassuming component, but its failure can bring a $50,000 scissor lift or a warehouse full of pallet jacks to a screeching halt. The is not just a dry technical document—it is your diagnostic roadmap, your calibration reference, and your safety guide.

The manual is technical in nature, designed for OEMs (Original Equipment Manufacturers) and technicians. It typically covers:

Vibration can loosen the heavy power terminal bolts. Loose connections cause high electrical resistance, generating heat that can melt the housing. curtis 3501 manual

. It monitors, displays, and controls numerous vehicle functions through a single integrated interface that is fully CANopen compatible Curtis Instruments Technical Specifications Operating Voltage: Auto-ranging from 12V to 80V DC (tolerance up to 100V DC). FSTN LCD dot matrix (240 x 128 pixels), monochrome. Hardware Interface: 5 push-buttons , and an optional audible alarm. Environment: Rated for temperatures between -40°C and +70°C ; sealing rated at for the front and IP-40 for the rear. I/O Support: Includes 4 digital inputs and 1 MOSFET output (1.0 Amp). Curtis Instruments Wiring & Pin Assignments The unit utilizes a 16-pin TYCO Mini Universal Mate-N-Lok interface. Curtis Instruments Description SCI Rx / SCI Tx Serial Communication Interface Pin 3 / 11 CAN_L / CAN_H CANbus communications Pin 4 / 12 Termination CAN_L and CAN_H Termination Switch Input 3 Often used as the Fault Code Input Keyswitch Input (Powers the unit) Pin 15 / 16 Main power supply Troubleshooting & Maintenance Error Codes:

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

The 3501 uses a 16-pin TYCO Mini Universal Mate-N-Lok connector. Description Serial Communication Receive PIN 2 Serial Ground PIN 3 PIN 4 CAN_L Term CAN Termination PIN 5 SW Input 1/Freq Switch 1 or Frequency Input PIN 6 SW Input 3/HYD Switch 3 or Hydraulic Input PIN 7 Keyswitch Input (B+) PIN 8 MOSFET Output Digital Output PIN 9 Serial Communication Transmit PIN 10 3. Operation and Menu Navigation It typically covers: Vibration can loosen the heavy

, detailed in official documentation , features a 12V-80V DC operating range (9V-100V DC absolute), -40°C to +70°C operating temperature, and IP65 front sealing. It utilizes a 16-pin TYCO connector for CANopen/Serial communication. Pinout and Terminal Assignments

Use the integrated mounting slots on the heavy-duty aluminum baseplate. Secure the unit using M5 or #10 screws. Do not overtighten, as cracking the housing will compromise environmental sealing.

Never assume color coding. Always verify with a multimeter against the pinout diagram in your manual.

: Features a monochrome 240x128 dot matrix FSTN LCD with backlighting for high visibility.