CHCNAV NX610 User Manual

Preface

This section covers copyright information, safety warnings, introduction to the system, technical support, disclaimers, and a section for user comments.

Copyright Information

Copyright © 2023-2024 CHCNAV. All rights reserved. CHCNAV and CHC Navigation are trademarks of Shanghai Huace Navigation Technology Limited. All other trademarks belong to their respective owners.

Safety Warnings

When using the CHCNAV NX610 GNSS Auto Steering System, observe the following safety precautions:

• Read and understand the operating instructions in this manual before use.
• Strictly follow local traffic regulations and safety standards during operation.
• Regularly check the system and equipment for proper condition and performance.
• Maintain concentration and alertness; avoid fatigue and distractions.
• Avoid using the system in hazardous areas (e.g., steep slopes, water, mud).
• Immediately stop using the system and contact support if abnormalities occur.
• Protect equipment from physical damage and weather factors.
• Observe relevant maintenance and upkeep requirements.
• Be aware of the surrounding environment and other personnel to prevent accidents.

Specific safety warnings may vary by device model and local regulations.

Introduction

This manual describes the installation and use of the CHCNAV® NX610 system. It is recommended to read this manual to understand the product's features, even if you have prior experience with similar systems.

Technical Support

For assistance, consult this manual, the CHCNAV website (www.chcnav.com), or your local CHCNAV dealer. For direct technical support, email support@chcnav.com.

Disclaimer

CHCNAV is not responsible for losses incurred due to incorrect operation or misunderstanding of this guide. CHCNAV reserves the right to update and optimize the guide's content.

Your Comments

Feedback on this user guide can be sent to support@chcnav.com for future revisions.

Product Overview

Introduction

The NX610 is an automated steering system designed for tractors, offering a compact, all-in-one solution to improve productivity, work in all visibility conditions, and reduce operator fatigue.

Main Components

• Receiver: A GNSS receiver that acquires satellite signals for precise positioning, direction, and speed.
• Electric Steering Wheel: Includes a steering motor and wheel for vehicle steering control, executing commands from the autonomous driving system.
• Tablet: The user interface for system interaction, used for setting paths, monitoring jobs, and configuring the system.
• Camera: Provides real-time images, used for obstacle detection to prevent collisions and crop damage.

Installation

Product Package

The product package includes:

Installation Steps

Steering System Inspection

Before installation, verify the vehicle's steering gear is normal and the dead zone (steering clearance) is appropriate. The acceptable dead zone range is less than 20 degrees. If it's between 20 and 70 degrees, modification may be needed. If it's greater than 70 degrees, the vehicle requires repair.

Original Steering Wheel Removal

1. Remove the protective cover of the original steering wheel.
2. Stabilize the steering wheel, loosen the spline screws using a sleeve tool, and remove them.
3. Pull the steering wheel off forcefully. If difficult, use a hammer to strike the spline shaft or a high-quality puller tool to avoid damage.

Steering Wheel Installation

1. If the sleeve fits the spline, remove the steering wheel's protective cover, insert the sleeve, and secure it with six M5*11 Phillips screws.
2. Install the T bracket or standard bracket onto the motor using two M5*16 hexagon screws.
3. Fix the T mount kit to the shaft with two M8*60 hexagon screws.
4. Insert the T bracket through the T mount kit.
5. Hold the steering wheel and tighten the spline screws.
6. Secure the T bracket to the T mount kit with two M10 nuts.
7. Check for tightness by shaking the steering wheel and ensure the steering clearance is not excessive.

Receiver Installation

1. Install the receiver on the central axis of the vehicle roof, as parallel to the vehicle as possible.
2. Clean the roof surface thoroughly before mounting the bracket.
3. Adjust the receiver bracket to ensure the receiver is horizontal, with the arrow facing forward.

Tablet Installation

Install the ball base in suggested locations, avoiding damage to vehicle cables. Options include drilling dovetail screws into the A-pillar or B-pillar, or using a U-bolt on the tractor crossbar. Adjust the tablet to a suitable position after installation. Note: Maintain a safe distance of over 40 cm when the vehicle is unmanned.

Camera Installation

The camera can be installed anywhere within the wire harness length.

Cables Connection

The integrated main cable connects to the receiver (A), motor (B), wheel angle sensor (C - Optional), tablet port (D), battery (E), camera (F), and rocker switch (G).

Wiring Precautions

• Thread harnesses through designated holes sequentially.
• Arrange outer harnesses first, then those inside the cab.
• Avoid high-temperature, oily, sharp, abrasive areas, fans, and exhaust pipes.
• Leave sufficient slack in wiring to prevent over-tightening or loosening. Ensure harnesses are smooth and not twisted.
• Allow extra length for full steering wheel movement if a wheel angle sensor is used.
• Secure harnesses with cable ties and trim excess. Store original vehicle accessories properly.

Electrical Connection Method and Precautions

• Connect to the battery first before connecting to the receiver, display, or steering wheel connectors to prevent damage.
• When connecting the power cord to the battery, connect to the positive electrode first, then the negative electrode.
• Use caution with wrenches when connecting to the positive electrode to avoid short circuits.
• For 12V/24V batteries, connect the positive wire to the positive terminal and the negative wire to the negative terminal. If using an additional battery in series, connect accordingly.

Quick Guide

Power On

Press the orange button once to boot the system. Do not turn the steering wheel during initialization.

Software Registration

Navigate to [Settings center -> System settings -> Register] to check software registration status. Software registration, RTK, and Auto steering must be activated. Contact technicians if they are not activated.

GNSS Mode

GNSS

Go to [Settings center -> Agricultural management -> GNSS].

Select RTK

In the GNSS settings, select RTK mode. Ensure satellite systems (GPS, GLONASS, BDS, Galileo, QZSS) are enabled as needed.

Status Bar

Check the status bar; all indicators must be gray for the system to be ready.

Vehicle

New Vehicle

Go to [Settings center -> Agriculture management -> Vehicle -> New] to create a new vehicle profile. Options include adding, searching, applying, editing, deleting, and exporting vehicles.

Vehicle Info

Select the tractor type (Front Steer, Rear Steer, Tracked, Articulated, Transplanter), and set the vehicle brand, model, and name. An ultra-low speed mode supports speeds as low as 0.1 km/h.

Steering Controller and Wheel Angle Sensor

Choose the Steering controller (Hydraulic Drive (PWM), Motor Drive, CANBUS) and Wheel angle sensor (Potentiometer, GAsensor Device, Without WAS). For example, a tractor might use Motor Drive and Without WAS.

Vehicle Parameters

Input vehicle parameters:

• Wheelbase (A): Distance between front and rear wheel rotation axes, measured parallel to the ground.
• Implement Tow Point (B): Default value is 0, reserved for future development.
• Front Hitch (G): Distance between the two front wheels.
• Maximum WAS: Default is 25 degrees, representing the maximum steering angle.
• Reference point for guideline recognition: Select between Vehicle head or Vehicle rear.
• To Middle Axle (C): Distance from the receiver to the vehicle's central axis. Enter 0 if mounted on the central axis.
• Antenna Pos Of C: Input based on the receiver's position relative to the center.
• To Rear Axle (D): Horizontal distance from the antenna center to the rear wheel center.
• Antenna location: Relative position of the antenna center to the rear axle (Front or Rear).
• Antenna height (E): Vertical distance from the antenna center to the ground.

Steering Calibration

Calibration requires an open, flat, and hard ground area (approx. 10x30 meters). Drive at 2 km/h and click [Start]. The steering wheel will turn automatically. Calibration typically takes about 2 minutes.

Installation Error Calibration

Follow these procedures:

1. Stop the vehicle near the guideline and click start to check the result.
2. Drive forward at 2 km/h until the distance displayed exceeds 30 meters, then click next.
3. Manually drive forward about 10 meters, turn around, stop on the line in front, and click next.
4. Drive forward at 2 km/h again, stop when the distance from the starting point is less than 1 meter, and click the End button. The system will calculate automatically.

Implement

New Implement

Go to [Settings center -> Agricultural management -> Implement -> New] to add a new implement. Options include adding, searching, applying, editing, deleting, and exporting implements.

Implement Selection

Select the Task type (e.g., General, Spraying, Planting, Tilling), enter the implement name, and choose the mounting method (e.g., Universal implement, Rear fixed mounting).

Implement Parameters

• Implement width: The working width of the implement (default 5 m).
• Row Spacing: The distance between rows (default 0 m).
• Hitch Point: Distance from hitch point to implement (default 1.5 m).
• Implement center offset: Offset from the implement center to the vehicle center. Click 'Calculate' to adjust for skip or overlap issues.

Implement center offset calculation involves driving along three guidelines and measuring the distance between them.

Field

New Field

Go to [Settings center -> Field -> Create] to create a new field. You can view field overview, search fields, create new ones, sort by distance or time, export fields, and edit or delete existing fields.

Guideline

Return to the main interface and click the second icon from the top on the left side to access guideline creation.

AB Line

1. Click 'A' at the current location.
2. Drive to the other end of the field and click 'B'.
3. A new AB line is successfully created.

A+ Line

1. Click 'A' at the current location.
2. A new A+ line is successfully created.

Free Curve

1. Click 'A' to start creating the curve line.
2. Click 'Pause' to create a straight line segment.
3. Click 'Continue' to resume creating the curve line.
4. Click 'B' to finish the Free curve creation.
5. A new Free curve is successfully created.

Starting Autopilot

Click the autopilot icon to start the system after completing the setup steps.

Turn Off

Press the orange button to switch off the system.

Maintenance

1. Maintain the equipment as instructed in the manual for normal operation and service life.
2. Do not disassemble main components. Contact CHCNAV after-sales support (support@chcnav.com) if necessary.
3. Use the device according to the user guide.
4. Regularly check screws, wiring harnesses, and connectors (e.g., controller screws, angle sensor screws, data cable connectors).
5. Keep the motor clean and ensure the surrounding environment is free of dust or obstructing materials.
6. Before starting work, check transmission device flexibility, coupling concentricity, and gear transmission flexibility.

FCC Warning

This equipment complies with FCC Rules Part 15. Operation is subject to two conditions: it must not cause harmful interference, and it must accept any interference received. Changes not explicitly approved by the manufacturer may void the user's authority to operate the equipment. This device has been evaluated for general RF exposure requirements and should be installed and operated with a minimum distance of 40 cm between the radiator and the body.

CHC Navigation Contact Information

Building C, 577 Songying Road, Qingpu District, 201702 Shanghai, China

Tel: +86 2154260273 | Fax: +86 2164950963

Email: sales@chcnav.com | support@chcnav.com

Skype: chc_support

Website: www.chcnav.com