Chapter 1Important Safety Information

Read this chapter in full before installing or operating Ditch Assist. Keep this manual with the machine, and make sure every operator has read and understood it.

1.1Cautions, Warnings, Statements

	DANGER: Indicates an immediate hazardous situation that, if not avoided, will result in death or serious injury.
	WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
	CAUTION: Indicates a potentially hazardous situation that, if not avoided, may result in injury. It may also be used to alert against unsafe practices.
	IMPORTANT: Indicates specific settings, calibrations, and procedures that must be followed for proper system performance and operation.

1.2Call Before You Dig

Call Before You Dig Warning

Before commencing any operation, it is your responsibility to contact the relevant utility operators to identify underground gas lines, electrical lines, fiber optic or other telephone lines, or any other underground objects in the areas you will be operating. Follow instructions from utility owners regarding working near any buried utilities.

1.3General Machine Safety

Recognize Safety Information

• This is an example of a safety-alert symbol.
• When you see this or a similar symbol on your machine or in this manual, be alert to the potential for personal injury.
• Follow recommended precautions and safe operating practices.

Follow Safety Instructions

• Carefully read all safety messages in this manual and on your machine safety signs.
• Keep safety signs in good condition. Replace missing or damaged safety signs.
• Be sure new equipment components and repair parts include the current safety signs. Replacement safety signs are available from your dealer.
• Learn how to operate the machine and how to use controls properly.
• Do not let anyone operate without instruction.
• Keep your machine in proper working condition as specified by the manufacturer.
• If you do not understand any part of this manual and need assistance, contact your dealer.

Remove Paint Before Welding or Heating

• Avoid potentially toxic fumes and dust.
• Hazardous fumes can be generated when paint is heated by welding, soldering, or using a torch.
• Remove paint before heating:
  • Remove paint a minimum of 100 mm (4 in.) from the area to be affected by heating. If paint cannot be removed, wear an approved respirator before heating or welding.
  • If you sand or grind paint, avoid breathing the dust. Wear an approved respirator.
  • If you use a solvent or paint stripper, remove the stripper with soap and water before welding. Remove solvent or paint stripper containers and other flammable material from the area. Allow fumes to disperse at least 15 minutes before welding or heating.
• Do not use a chlorinated solvent in areas where welding will take place.
• Do all work in an area that is well ventilated to carry toxic fumes and dust away.
• Dispose of paint and solvent properly.

Avoid High-Pressure Fluids

• Escaping fluid under pressure can penetrate the skin causing serious injury.
• Avoid the hazard by relieving pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure.
• Search for leaks with a piece of cardboard. Protect hands and body from high pressure fluids.
• If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result. Doctors unfamiliar with this type of injury should reference a knowledgeable medical source.

Check Hoses for Damage

• Hydraulic hoses can fail due to physical damage, kinks, age and exposure.
• Check hoses regularly.
• Replace damaged hoses.

1.4WARNING: Dangers Associated with Operating Ditch Assist

Important Safety Notice

The following notice is reproduced in full. Read it carefully before powering on the system.

1. Remote Control of Implement Hydraulics: The Ditch Assist system allows for the remote control of implement hydraulics via a wireless connection to an Android tablet. This capability, while enhancing operational efficiency, introduces significant safety risks if not managed properly.
2. Risk of Serious Injury or Death: Operating Ditch Assist can result in the movement of heavy machinery and implements. Failure to observe proper safety protocols can lead to severe injury or death. It is imperative that all operators and bystanders are aware of the following dangers:
   1. Unintended Movement: The remote control feature can cause the implement to move unexpectedly. Always ensure that no individuals or animals are within the vicinity of the machinery before engaging the system.
   2. Crushing Hazards: Implements such as scrapers, ditchers, land levelers, and blades can cause crushing injuries. Never stand or allow others to stand near or under the implement when it is in operation or when the system is powered on.
   3. Pinch Points: Hydraulic components and moving parts create pinch points that can trap and injure fingers, hands, or other body parts. Maintain a safe distance from all moving parts during operation.
3. Operational Protocols: To mitigate these risks, adhere strictly to the following safety protocols:
   1. Pre-Operation Check: Before activating Ditch Assist, conduct a thorough inspection of the work area to ensure it is clear of all personnel, animals, and obstructions.
   2. Communication: Establish clear communication protocols with all team members. Use hand signals, radios, or other communication devices to ensure everyone is aware of the machine’s status and movements.
   3. Ditch Assist hydraulic control can be stopped in an emergency by any one of the following: Emergency Stop: Familiarize yourself with the emergency stop procedures for both the Ditch Assist system and the machinery it controls. Ensure that all operators know how to quickly disable the system in case of an emergency.
      • 1. Disabling tractor hydraulics by either switching off the tractor engine or turning off flow to the hydraulic circuit connected to the Ditch Assist Valve
        2. Pressing STOP on the Ditch Assist App’s Grading Screen
        3. Switching OFF power to the Ditch Assist Control Module via the power switch on the power harness
   4. Training: Only trained and authorized personnel should operate the Ditch Assist system. Comprehensive training on the system’s functionality, safety features, and emergency procedures is mandatory.
   5. Supervision: Always supervise the operation of Ditch Assist, especially when used in remote control mode. Never leave the system unattended while it is powered on.
4. Legal Liability: Failure to comply with these safety warnings and protocols may result in legal liability for any injuries or damages that occur. Operators and owners of the Ditch Assist system are responsible for ensuring safe operation and adherence to all relevant safety guidelines and regulations.
5. Manufacturer Disclaimer: Northern Plains Drainage Systems Ltd, the manufacturer of Ditch Assist, disclaims any liability for injuries, damages, or losses resulting from improper use or failure to follow safety protocols. By using the Ditch Assist system, you acknowledge and accept the inherent risks associated with its operation.
6. Emergency Contact: In case of an emergency or if you encounter any issues with the Ditch Assist system, immediately contact our support team at +1‑877‑354‑2899 (Press 3 for Support) or use the Contact Form available at the Ditch Assist website.

Stay Alert. Stay Safe.

STAY ALERT. STAY SAFE. ALWAYS PRIORITIZE SAFETY OVER CONVENIENCE. By adhering to these warnings and protocols, you help ensure a safer working environment for yourself and those around you.

Chapter 2Warranty & Certifications

Regulatory statements, the End User License Agreement, and the hardware warranty, reproduced in full.

2.1Statements & Certifications

Ditch Assist Control Module

Contains Transmitter Module FCC ID: QOQWF121
Contains Transmitter Module IC: 5123A‑BGTWF121

Certifications

Compliant to the following specifications:

CE

WF121 is in conformity with the essential requirements and other relevant requirements of the R&TTE Directive (1999/5/EC). The product conforms with the following standards and/or normative documents.

EMC (immunity only) EN 301 489‑17 V.1.3.2 in accordance with EN 301 489‑1 V1.8.1
Radiated emissions EN 300 328 V1.8.1

FCC and IC

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.

FCC RF Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This transmitter is considered as mobile device and should not be used closer than 20 cm from a human body.

IC Statements

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

RF Exposure — Antenna Separation

To comply with FCC and Industry Canada RF radiation exposure limits for general population, the antenna(s) used for this transmitter must be installed such that a minimum separate distance of 20 cm is maintained between the radiator (antenna) and all persons at all times and must not be collocated or operating in conjunction with any other antenna or transmitter.

2.2End User License Agreement

This End User License Agreement (the “Agreement”) is made between Northern Plains Drainage Systems Ltd (the “Vendor”) and the user, having purchased the Ditch Assist system from an approved vendor (the “Licensee”). Under this Agreement, the Vendor grants the Licensee a non-exclusive and non-transferable license (the “License”) to use Ditch Assist Software, which comprises both the mobile (Android) application and proprietary operating software that is run on the Ditch Assist Control Module (collectively referred to as the “Software”).

1. Grant of License: Upon purchasing the Ditch Assist hardware from an approved vendor, the Licensee is granted a non-exclusive, non-transferable license to use the embedded logic/software and the Ditch Assist mobile application. This License is strictly for the Licensee’s use and does not transfer any ownership rights of the Software to the Licensee.
2. Ownership and Intellectual Property: The Software, including all of its components, the user interface, and any accompanying printed, electronic, and online documentation, remains the exclusive property of the Vendor. All intellectual property rights, including copyright and distribution rights of the Software, are retained solely by the Vendor.
3. Restrictions on Use: The Licensee agrees not to modify, reverse-engineer, or decompile the Software through any currently available or future technology. Any violation of these terms will be considered a substantial breach of this Agreement and may result in its termination.
4. License Fee: The initial purchase price paid by the Licensee for the Ditch Assist hardware includes the entire license fee for the Software. This fee covers the Software’s functionalities as of the time of purchase. If the Vendor introduces new features in the future that result in an increase in the price of the Software, the Vendor reserves the right to offer the Licensee an opportunity to access these additional features as an upgrade for an additional cost.
5. Disclaimer of Warranties: The Software is provided “as is.” The Vendor assumes no liability for any direct, indirect, incidental, or consequential damages that the Licensee may suffer due to the use or failure to use the Software. This includes, but is not limited to, loss of profits, loss of production, loss of data, or any other business or economic losses.
6. No Guarantee of Fitness: The Vendor does not guarantee that the Software will be fit for the Licensee’s particular purpose or requirements, or that its use will be uninterrupted or error-free. The Licensee acknowledges that software, in general, may have bugs or flaws within an industry-accepted level.
7. Termination: This Agreement will be valid from the time the Licensee installs the Software and will continue indefinitely unless terminated. The Agreement may be terminated if the Licensee fails to comply with any of its terms.
8. Force Majeure: In the event of unforeseen and uncontrollable occurrences such as natural disasters, war, or any other force majeure event, the Vendor will not be held liable for failing to fulfill its obligations under this Agreement, provided that the Vendor has taken all reasonable measures to mitigate the impact of such events.
9. External Factors: The Licensee recognizes that external factors beyond the Vendor’s control, such as the accuracy of GPS signals, satellite interference and outages, or the performance of hydraulic systems on which Ditch Assist is installed, may influence the operation of Ditch Assist. The Vendor will not be held responsible or liable for any such occurrences.
10. Governing Law: This Agreement will be governed by the laws of the Province of Manitoba, Canada, and will be enforced or construed in accordance with these laws. Both parties agree to submit to the jurisdiction of the courts of the Province of Manitoba for any disputes or enforcement arising from this Agreement.
11. Software Updates: The Vendor commits to providing updates and maintaining the Software to remain compatible with future hardware and Android OS releases as per industry standards. However, the Vendor does not guarantee that the Software will always be compatible with all future hardware and Android OS releases. The Vendor will provide updates and support for a period of at least one year from the date of purchase. After this period, the Vendor may offer updates and support at its discretion and reserves the right to charge additional fees for such services.
12. Entire Agreement: This Agreement constitutes the complete agreement between the Vendor and the Licensee, superseding all prior agreements or representations, whether written or verbal. Any modifications to this Agreement must be made in writing and signed by both parties. The Vendor’s successors and assigns are bound by the terms of this Agreement.
13. Notifications: All notifications to the Vendor under this Agreement should be sent to the following address: Northern Plains Drainage Systems Ltd, Box 9, Elm Creek, Manitoba, R0G 0N0, Canada.

By installing and using the Software, the Licensee acknowledges that they have read, understood, and agree to be bound by the terms and conditions of this Agreement.

2.3Hardware Warranty Information

The Vendor guarantees that for a duration of 12 months from the “Warranty Start Date” (defined as the date Ditch Assist is purchased from the Vendor or an Authorized Dealer of the Vendor), all hardware components will be free from defects in materials and workmanship when used normally and in accordance with the product’s intended usage and installation.

1. Warranty Coverage: In the event of any hardware failure during normal operation within the 12-month warranty period from the “Warranty Start Date,” the Vendor commits to repairing or replacing the faulty hardware component at no cost to the Licensee. This warranty is the sole and exclusive remedy for any breach of this express warranty.
2. Disclaimer of Additional Warranties: No additional express or implied warranties are offered by the Vendor. THE VENDOR EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
3. Exclusions from Warranty: The Vendor does not provide a warranty for damages caused by:
   1. Misuse
   2. Alterations
   3. Negligence
   4. Accidents
   5. Vandalism
   6. Natural disasters
   7. Incorrect installation
   8. Improper storage
   9. Any other event outside the normal, intended use and installation of the system
4. Right to Repair or Replace: The Vendor retains the right to repair products that malfunction within the warranty period, particularly when a product failure is reported after successful installation and usage for its intended purpose for any duration of time. The Vendor may require malfunctioning products within the warranty period to be returned for assessment. Products that have been repaired, rebuilt, or replaced will have a warranty for the remaining duration of the original product warranty. Any original product or product components replaced during repair, rebuilding, or replacement will be retained by the Vendor.
5. Software and Firmware: All software and firmware developed and/or provided by the Vendor is sub-licensed “as is.” The Vendor will not be held responsible for any direct, indirect, incidental, or consequential damages, including data loss, resulting from the usage of software and firmware provided by the Vendor.
6. Limitation of Liability: The Vendor’s liability under this warranty is limited to the repair or replacement of defective hardware components. The Vendor shall not be liable for any incidental, consequential, or special damages, including but not limited to loss of profits, loss of production, or loss of data, arising from the use or inability to use the product.
7. Governing Law: This warranty shall be governed by and construed in accordance with the laws of the Province of Manitoba. Any disputes arising under or in connection with this warranty shall be subject to the exclusive jurisdiction of the courts of the Province of Manitoba.
8. Contact Information: For warranty claims or inquiries, please contact:
   1. Northern Plains Drainage Systems Ltd
      Box 9, Elm Creek, Manitoba, R0G 0N0, Canada
      Phone: +1‑877‑354‑2899

By using the Ditch Assist system, the Licensee acknowledges that they have read, understood, and agree to be bound by the terms and conditions of this Hardware Warranty Information.

Chapter 3System Overview & Kit Contents

What Ditch Assist is, how it works, what its GNSS accuracy depends on, and what arrives in the box.

3.1Welcome to Ditch Assist

Welcome to our growing community of Ditch Assist users and dealers! Congratulations on your purchase of a Ditch Assist system.

Ditch Assist is the revolutionary alternative solution to modern machine control. This state-of-the-art automatic machine control system is specifically designed to transform operations in surface drainage, land leveling, land forming, and simple tile drainage installation. With a focus on user-friendly automation, Ditch Assist effectively manages the raise and lower hydraulics on a variety of machines such as scrapers, ditchers, land levelers, and blades, among others.

With the benefits of wireless technology, and operated via the Ditch Assist Android App on a standard 10” Android tablet, Ditch Assist is simple and affordable, yet advanced and powerful.

Ditch Assist takes versatility to a new level with Universal Grade Control. This unique feature, facilitated by a custom-designed PWM valve, ensures precise control of any implement, irrespective of the age, make, or model of your tractor. The system sets up with any tractor — no integration with the tractor’s electronics is needed — and it supports any implement including scrapers, ditchers, blades, and levelers. Furthermore, Ditch Assist is GPS-ready and works with any brand, making use of a low-cost RTK or your existing RTK.

Whether you’re creating surface drains, leveling land, or installing tile drainage, Ditch Assist offers simple, fully automated grade control through our PWM valve, with the option of manual operation using a guidance-only kit.

3.2Typical Applications

To give you a clearer understanding of how Ditch Assist can benefit your operation, here are four typical use case scenarios:

I — Basic drainage, grading, and leveling

At its simplest, Ditch Assist can work like a laser guidance or control system but with the added advantage of using GPS technology. Set the cutting edge of the implement on the ground at a starting point, enter the desired grade and whether you are working uphill or downhill, and start working. Ditch Assist does the rest, calculating the target elevation and guiding the operator or directly controlling the implement’s hydraulics via the proportional valve. When paired with RTK GPS, Ditch Assist achieves precision equal to a laser, without the need for transmitter repositioning or environmental interference. For level areas like a pad, enter a grade of zero or a target elevation value and the implement maintains the same elevation wherever it travels.

II — Multi-slope surface & subsurface drains

Ditch Assist includes an advanced feature known as Slope-IQ. Survey a proposed route, then let Slope-IQ devise a best-fit solution that maintains a specified minimum grade throughout the route and follows the natural contours where there is adequate slope — reducing the amount of material to be moved. Built-in Guided and Freeform design modes also let operators design a fully custom solution, including subsurface (tile) drainage installations, with complete control and flexibility.

III — Multi-slope planes on small fields or areas

Slope-IQ can also create multi-slope planes — for example, landforming a small parcel so all water drains from east to west. The design is automatically offset at 90 degrees on either side of the original surveyed route, so you can implement the same design over the entire parcel by surveying down the centre and working outwards. This method works best in relatively uniform landscapes and smaller areas, and has been used successfully for flood irrigation fields and grading small plantation fields to prevent water pooling.

IV — Advanced 3D landforming designs from third-party software

Ditch Assist can implement advanced 3D land leveling or land forming designs from software/service providers such as OptiSurface, AgForm3D, and Ezigrade. The design is exported from the design software as a text file and loaded into the Ditch Assist App, which smartly interpolates the original points so the intended design elevation is calculated accurately at all locations within the design footprint. As you work the field, Ditch Assist continuously calculates the target elevation from the design and adjusts the implement hydraulics accordingly.

3.3How Ditch Assist Works and Its Limitations

Ditch Assist’s main job is to keep your implement blade at the right elevation at your current location, and keep recalculating and adjusting this target elevation as you work. The target elevation can come from a few different sources: a best-fit design created through Slope-IQ, a pre-established land leveling design made in third-party software, or a simple target elevation or grade plane starting from a set elevation.

Here’s how it all works:

1. GPS/GNSS position information: The Ditch Assist Control Module receives position data from your GPS system multiple times per second.
2. Wireless transmission: This data is wirelessly sent to the Android tablet in your tractor cab running the Ditch Assist App using Wi-Fi (think of Wi-Fi in this case as replacing a pesky cable that you’d otherwise need to run from outside and into the cab).
3. Target elevation calculation: The app reads the position information, figures out where you are, and then determines the target elevation for your current location based on the currently loaded design or grading parameters.
4. Target elevation communication: The app then sends this updated target elevation information back to the Control Module, again over the Wi-Fi connection.
5. Intelligent elevation control: The Control Module compares the desired elevation with the current elevation, determining whether the implement needs adjustment. Activation of the solenoids in the PWM proportional valve controls hydraulic cylinder movement, adjusting the implement’s height. The Control Module employs intelligent logic to automatically modify the duty cycle based on the required adjustment. This allows for precise movements when close to the on-grade deadband and quicker responses when more substantial cylinder movement is necessary.

Due to the constant movement of the vehicle and slight fluctuations in the GPS/GNSS calculated position, accurately hitting the target is challenging, even when stationary and utilizing RTK technology. The GPS elevation constantly fluctuates within approximately 1–2 cm, resulting in continuous small adjustments. Consequently, the system continuously raises and lowers the implement to maintain proximity to the target as much as possible. While minor movements may not be noticeable, significant discrepancies will cause noticeable changes in the hydraulic cylinders’ positions to adjust the implement’s height.

3.4Important GNSS (GPS) Limitations to Understand

Ditch Assist greatly relies on the precision of GNSS (Global Navigation Satellite System) information. Without highly accurate positioning data, its performance can be compromised. Here are some crucial limitations to keep in mind:

1. Non-RTK GNSS: Standard GNSS systems, such as GPS, that lack corrections like Real-Time Kinematics (RTK) can have position errors of up to several meters. For Ditch Assist, which demands centimeter-level accuracy, this can lead to inconsistencies in land alignment and leveling. For instance, a non-RTK GNSS might move the implement unnecessarily or fail to signal when movement is needed, resulting in uneven terrain.
2. RTK challenges: While RTK offers more precise data compared to standard GNSS, it’s not immune to issues. RTK relies on a stable connection between the base station and the receiver. Disruptions can temporarily reduce RTK’s precision. If the radio link fails or the base station loses its GNSS signal, the receiver may revert to standard GNSS accuracy until the issue is resolved, causing errors similar to non-RTK GNSS.
3. Multipath errors: Both non-RTK GNSS and RTK can be affected by multipath errors. These errors occur when satellite signals bounce off nearby objects like buildings, trees, or grain bins, before reaching the receiver or base station receiver. The reflected signals can confuse the receiver, resulting in incorrect position calculations and, consequently, improper implement adjustments.
4. GNSS signal blockage: Tall trees, buildings, or other obstacles can obstruct the line of sight to GNSS satellites, impacting the accuracy of position calculations. For Ditch Assist, this could lead to errors in implement movement. In northern latitudes for example, older systems that do not utilize GLONASS will be particularly impacted.
5. Space weather: In northern regions, solar flares and coronal mass ejections, while giving us beautiful auroras, can negatively affect GNSS, particularly high-precision systems like RTK. These space weather events can disrupt satellite signals, causing temporary inaccuracies. Check current and forecast space weather conditions at www.swpc.noaa.gov.

Utilizing RTK GNSS technology can alleviate some of these challenges, providing higher accuracy for precision agriculture applications like Ditch Assist. However, it’s crucial to be aware of potential sources of error and take steps to minimize them for optimal performance. See Section 5.7 for guidance on choosing a correction source.

3.5What’s in the Kit

Figure 3.1 — Ditch Assist Control Module

Ditch Assist Control Module

The Control Module is the heart of the Ditch Assist system, connecting all its components. It powers the GPS receiver, processes incoming GPS messages, and enables wireless communication with the Ditch Assist Android app. Additionally, it intelligently manages the proportional valve for automated control when needed.

Built to withstand tough conditions, the Control Module features an environmentally sealed casing, ensuring durability across a wide temperature range:

• IP67-rated environmentally sealed enclosure
• Operating temperature −40 °C to +85 °C
• Works with both 12 V and 24 V systems (9–32 V input range)
• RS232 serial communication, plus built-in Wi-Fi

Main harness — see Figure 4.7 for the full wiring diagram

Ditch Assist Main Harness

The Ditch Assist Main Harness is a vital component of the system, designed for both convenience and flexibility. It comes with a detachable power harness, allowing for permanent installation or the option to install multiple power harnesses on different tractors as needed. This harness seamlessly interfaces with the Control Module, coordinating with both the GPS and the proportional valve.

Additionally, it features a connector specifically designed for a GPS breakout, enabling the connection of brand-specific GPS cables. This ensures that your Ditch Assist system can easily integrate with a wide range of GPS receivers.

GPS breakout cable — see Figure 4.8

GPS Breakout Harness

The GPS Breakout Harness is designed to provide a seamless connection and power supply to your GPS receiver, tailored specifically to your brand. We offer GPS harnesses compatible with most widely-used agricultural GPS receivers, including Emlid, ensuring broad compatibility.

Additionally, we provide a DB9 cable to interface with various other devices using manufacturer-specific breakout harnesses. These harnesses include a DB9 connector designed to relay GPS messages to third-party devices, making it easy to integrate your GPS system with other equipment.

Figure 3.2 — PWM proportional hydraulic valve

PWM Proportional Hydraulic Valve (included in Full Automation Kit)

For automated hydraulic control, a PWM hydraulic valve is essential. The official valves provided with Ditch Assist are custom-assembled exclusively for use with our system. Only valves offered by our authorized dealers should be used. Please note that no support or warranty will be extended if alternative valves are utilized.

Valve model and configuration: The exact valve model and configuration may vary depending on your geographic location and specific equipment. Our proportional valve comes standard with hydraulic couplings and hoses to connect your implement’s up/down hydraulic hoses to the valve, and subsequently, the valve to the tractor remotes.

Adjustability and options: Our standard valve is designed for closed center hydraulic systems and operates well with most commonly used equipment. We also offer optional valves that can be adjusted to either open or closed center configurations, and a higher-flow valve option for very large implements. For more information, please contact your dealer.

Figure 3.3 — Valve Bypass Kit

Valve Bypass Kit

The Valve Bypass Kit allows you to integrate two additional lines into the tractor’s remotes, providing the flexibility to bypass the valve when needed. This feature is particularly useful for situations where you require manual control or need to quickly switch to manual operation without using the manual raise/lower buttons on the application interface. With this kit, there is no need to disconnect the valve, ensuring seamless transitions between automated and manual control.

Figure 3.4 — GNSS (GPS) antenna

GNSS (GPS) Antenna

Ditch Assist is compatible with a wide range of popular GNSS equipment, offering you the flexibility to integrate it with your existing technology. Alternatively, you may have acquired Ditch Assist bundled with a compatible GNSS system from your dealer.

The GNSS antenna, mounted on the implement being controlled, delivers essential NMEA position messages to the Ditch Assist Control Module. This ensures precise operation and seamless coordination within your system.

Figure 3.5 — 10” Android tablet (purchased separately or through your dealer)

Android Tablet

The Ditch Assist App is specifically designed to operate on 10” Android tablets running Android 7.0 or newer. While it is possible to run the app on phones and smaller tablets, you may encounter issues with resizing, layout, potential crashes, and missing features. Therefore, we strongly recommend using a 10” or larger screen tablet from a recognized manufacturer to ensure optimal performance.

Current recommendation: We currently recommend any current Samsung tablet with a 10-inch or larger screen. These tablets are known for their reliable performance, quality components, and sufficient memory resources, which are crucial for running the Ditch Assist App smoothly. Some budget-friendly units available in the market may compromise on the quality of components like Wi-Fi transmitters and available memory resources, potentially leading to suboptimal performance.

Other Ditch Assist Hardware

This manual covers the Ditch Assist Control Module kit (Wi-Fi controller with PWM proportional valve). Other Ditch Assist hardware, such as the excavator GNSS (DIG) module, is covered by the separate documentation supplied with that equipment.

Chapter 4Installation

Mounting, hydraulic connections, wiring, and antenna placement. Depending on the type of equipment you plan to install Ditch Assist on, the exact method will vary somewhat. Ditch Assist is extremely simple to install and move between equipment — the following guidelines should help you determine a suitable installation for your particular equipment.

4.1Before You Begin

Important

Make sure that Ditch Assist components are installed so that parts, cables, and hoses will not be stretched, pinched, or otherwise damaged during the operation of equipment. Keep in mind that cables and hoses may be subject to stretching when the implement is turning, and that components mounted near the hitch or rear of the tractor may come into contact with other parts when cornering.

Review the safety information in Chapter 1 — particularly Avoid High-Pressure Fluids — before connecting or disconnecting any hydraulic line.

4.2Connect the Power Harness to the Battery ONLY

• Connect the Power Harness directly to the tractor battery terminals.
• Avoid connecting it to a trailer power connector or an in-cab power strip.
• Failure to follow this instruction may result in intermittent connectivity and hydraulic control issues caused by power fluctuations and insufficient current.

4.3Proportional Valve Setup

Consult the specific installation instructions included in your installation kit. If these are missing, please contact your dealer to obtain them. Ensure you assemble the hydraulic components as shown. Below are common hydraulic assembly instructions for our Bucher and Rexroth valves (other valves may be slightly different).

Bucher valve

Connect the automation hoses necessary for constant flow to the external valve block (the block with the dial). Attach the fittings for the manual bypass and implement hoses to the central block situated between the solenoids.

Rexroth valve

Connect the hydraulic hoses needed for automation (providing a constant flow) to the ports located on the valve block’s top surface. Attach the implement connectors and manual bypass fittings to the ports situated on the valve’s side.

4.4Control Module & Valve Installation

Ensure that the Control Module is securely installed either at the implement’s front, near the hitch, or at the tractor’s rear, with minimal obstructions to the line of sight to the cab. The included magnetic mount can be used for this purpose, or you can fabricate your own if needed. The Control Module can be installed in either a horizontal or vertical orientation.

Important — Ports Facing Downward

While the Control Module is sealed against weather, and all connectors that plug into it come with waterproof gaskets, we strongly advise installing it with the ports facing downward to prevent water from accumulating in and around them. If the wiring harness connectors are removed from the Control Module, this might allow moisture to infiltrate. Always ensure all port connectors or covers are in place when leaving the Control Module outside.

Position the proportional valve in a place that allows the implement hydraulic hoses to connect to it and enables the included hoses you attached to the valve to reach the remote ports at the tractor’s rear. To prevent damage during operation, the valve must be securely installed.

Valve mount bracket: The kit ships with a steel valve mount bracket that is pre-drilled for the mount holes on the valve. It is up to the user to determine the optimum mount location and whether to permanently weld the bracket there, attach it using clamps or other suitable methods, or use another method to secure the valve. It is important that the valve is securely installed. If the provided angle iron mount is used, the pre-drilled holes will align with the valve’s mounting holes, and the mounting plate should be either bolted or welded to the equipment.

Suggestion: If you intend to use Ditch Assist with multiple different implements, consider permanently mounting the valve on your tractor, as it may be more practical.

Guidelines for mounting on a scraper or land leveler

• Valve bracket: Mount the valve bracket securely to the implement. Do not weld the bracket with the valve mounted. Remove the module before welding anything to the implement.
• Module placement: Ensure the module is mounted where it will not be dislodged by debris, moving parts, or hydraulic lines.
• Cable and hose management: Secure all cables and hydraulic lines so they will not be pinched, stretched, or damaged during operation.

4.5Connecting the Hydraulic Hoses

• Hydraulic connections: The two hoses coming from the P and T ports on the valve, in addition to the hoses for the bypass, need to be connected to the tractor — a total of four hoses.
• Continuous flow: The hydraulic remotes on the tractor that Ditch Assist is connected to should be set to a continuous flow when operating, allowing the valve to raise and lower the implement as required.
• Valve response settings: The Ditch Assist app contains settings for valve response (minimum and maximum duty cycle). These are software settings — see the app’s built-in manual for details.

By following these guidelines, you can ensure a successful and secure installation of your Ditch Assist system.

4.6Mounting the GPS Antenna

Important — Antenna Must Move with the Blade

The GPS antenna used with Ditch Assist must be mounted on the implement being controlled and attached to a part that moves up and down in proportion to the cutting edge or blade. Failure to adhere to this principle will result in incorrect operation.

Key guidelines

• Raised position: Mount the GPS antenna in a raised position so it sits above any objects that might block or deflect the satellite signal. This helps ensure a clear line of sight to the sky — the antenna should have an unobstructed view of the sky from approximately 15 degrees above the horizon, in all operating positions.
• Avoid metal objects: Ensure the antenna is mounted away from metal objects or other obstructions that could cause incoming GPS signals to bounce off and decrease accuracy.
• Consider working position: Keep in mind that the working position of the implement may be considerably lower than the transport position. A taller mast may be required to maintain a clear view of the sky in all positions.

4.7Mounting Your Android Device

The Ditch Assist Kit includes a RAM mount designed for 10” tablets. Here’s how to securely install your device in the tractor cab:

• Secure installation: Use the RAM mount to securely install your tablet in a location where you can easily see and tap the screen.
• Power supply: Power your device to avoid battery drain using the supplied high-amp 12 V charger. Note that the tablet and charge cables are not included in the standard Ditch Assist kit, but may optionally be purchased through your dealer.

4.8Connect All Cables

The Ditch Assist system is designed so that cable connectors cannot be mistakenly connected to the wrong component. Use the following checklist to verify all components are connected and dust covers in place:

• Power harness ring terminal connectors connected to tractor battery terminals
• Power harness Deutsch connector is connected to Ditch Assist main harness
• GPS/GNSS harness is connected to GPS/GNSS device
• GPS/GNSS harness is connected to Ditch Assist main harness
• Two small Deutsch connectors are connected to valve solenoid ports
• Two large Deutsch connectors are connected to ports A and C on the Ditch Assist Control Module
• Ports B and D are sealed using the included Deutsch plugs

Protect the Control Module

Use the provided plug connectors to seal the two empty ports on the Ditch Assist Control Module. This step is important to prevent dirt and moisture from damaging the controller electronics.

4.9Connecting the Tablet to the Control Module

The Control Module broadcasts its own Wi-Fi network — no internet connection is required or used.

1. Ensure that the Control Module is switched ON — you should see the LED lights glowing on the module.
2. Go to your tablet’s Wi-Fi settings and search for a Wi-Fi network name that starts with DitchAssist.
3. Connect your tablet to the DitchAssist Wi-Fi network using the password 12345678.
4. If your tablet alerts you about the network lacking an internet connection, select the option to continue with the connection (e.g. “Always connect”).
5. Open the Ditch Assist app and tap the orange Pre-Flight Checks button at the bottom of the sidebar, then tap Connect — the app automatically detects the Control Module. Once connected, the panel shows the controller status and live GNSS details (coordinates, number of satellites, fix status), which begin updating once your GPS receiver is configured (see Chapter 5). Alternatively, simply pick a workflow on the Home screen — its setup wizard includes the same Connect step.

One Device at a Time

Only one device can be connected to the Control Module at a time. If you have previously connected a phone or another tablet, “forget” the DitchAssist network on that device so it does not steal the connection.

4.10Verifying Implement Hydraulic Control

Before first use, verify that the valve and harness are connected correctly:

1. Identify the hydraulic remotes that are connected to both the bypass and the valve — manually operating the bypass controls should operate the implement hydraulics.
2. Set the valve hydraulics to constant flow, and ensure flow is set to sufficient volume to move the implement.
3. In the Ditch Assist app, open Pre-Flight Checks (orange button at the bottom of the sidebar). Under Hydraulic Test — Hold to Move, press and hold the Raise button, then the Lower button — the implement should raise and lower accordingly; releasing stops movement.
4. If the implement goes up when pressing Lower (and vice versa), reverse the connections from the Ditch Assist harness to the valve solenoids. See also the troubleshooting entry in Chapter 6 — never reverse the hydraulic flow direction on the tractor to fix this.

4.11Typical Installations

The Ditch Assist Control Module and proportional valve (if used) are typically mounted either near the hitch on the implement being controlled or at the rear of the tractor. The power harness should be connected directly to the tractor battery. The GPS antenna is mounted in a raised position on the implement, ensuring it moves up and down proportionally with the cutting edge.

Land leveler or similar implement

• PWM valve: Mount the PWM valve on the implement tongue, a few feet away from the hitch point.
• Control Module: Attach the Ditch Assist Control Module to the tongue or any other suitable spot that has clear line-of-sight to the cab using the provided magnetic mounts or a custom-made bracket.
• GNSS receiver: Place the GNSS receiver at the top of the implement. If the implement has components that overhang or if it is shorter and might obstruct the GNSS’s view of the sky due to the tractor, you may need a raised mount.

Pull-type scraper

• Valve installation: Install the valve on the tongue using either the provided bracket or a custom bracket.
• Control Module: Mount the Ditch Assist Control Module on the tongue. If there are any Wi-Fi connectivity issues, the Control Module can alternatively be installed on the vertical part of the scraper frame to provide a better line of sight to the tractor cab.
• GNSS mounting: Ensure the GNSS is mounted in a manner that allows it to move proportionately with the cutting edge. This generally requires a mast to keep it above the metal components surrounding it when the scraper is in its maximum lowered position.

Chapter 5GNSS / RTK Setup

Ditch Assist was developed with compatibility in mind, designed to work with a wide range of GPS brands and models. It uses the NMEA 0183 message standard over an RS232 serial connection — the format supported by virtually every agricultural GNSS receiver.

5.1GPS Requirements and Settings for Ditch Assist

You should configure your GPS to output the following NMEA messages:

Required NMEA Output Settings

• SET BAUD RATE TO 38,400
• GGA MESSAGE AT 5 Hz or 10 Hz
• VTG MESSAGE AT 5 Hz or 10 Hz
• DISABLE ALL OTHER MESSAGES IF POSSIBLE

5 Hz means five position updates per second and is usually sufficient for most Ditch Assist installations. Use 10 Hz when the receiver supports it and the implement has very fast-moving hydraulics or needs faster feedback. If you can’t designate a specific message rate for each message, set the receiver output to 5 Hz and disable messages that are not required.

You may need to perform this configuration while the receiver is on the tractor and connected to the tractor display (e.g. for John Deere, Trimble, CNH, etc.) — see the brand-specific sections below.

5.2Diagnosing GPS/GNSS Connectivity Using the Status 2 LED

• The Status 2 light blinks when a valid RS232 NMEA 0183 GPS message is received. All GPS receivers connected to Ditch Assist use this format, so the Status 2 light is the critical indicator that the correct messages and rates are enabled — if the Status 2 light does not flash this means the Control Module is not receiving valid messages.
• The blinking pattern of the Status 2 LED mirrors the frequency of the message rate. Simply put, a consistent blink every second signifies a 1 Hz message rate, implying that the GPS updates the position every second.

For best performance, the GGA and VTG message rate should be 5 Hz or 10 Hz. 5 Hz provides five position updates per second and is usually sufficient for all but very fast-moving hydraulics. A slowly flashing Status 2 light (e.g. flashing once every few seconds) could signify that the message rate is not fast enough, which can cause the implement to bypass the target before receiving a new position.

If you notice the Status 2 light blinking very quickly, then stopping, then flashing quickly again, this can be an indication that the message rate is too fast for the GPS receiver to output and a “bottleneck” has formed. In this case, reduce the message rate to 5 Hz and disable any messages that are not required.

5.3How to Configure John Deere Smart Antennas

When utilizing a John Deere smart antenna with Ditch Assist, the Ditch Assist GPS cable will provide power to the unit and directly extract the necessary position information into the Control Module. In this setup, there is no need to connect the GPS to the tractor or the GreenStar Display. It is essential to configure the receiver while it is connected to the John Deere display, such as when it is installed on the tractor’s roof. Once properly configured, you can remove the receiver and attach it to the implement, connecting it to the Ditch Assist Control Module using the appropriate cable. Ditch Assist will supply power to the receiver and retrieve the required GPS messages from it.

1. First, scroll through the main screens to the StarFire screen.
2. Next, tap on the icon that looks like a StarFire receiver.
3. Open the Serial Port tab.
4. Use the dropdown to set the baud rate to 38,400.
5. Adjust the output rate to 5 Hz or 10 Hz.
6. Finally, turn on the GGA and VTG messages. Turn off any others that may be on.
7. Exit the menu once the changes are complete.
8. Your receiver should now be broadcasting the selected NMEA strings. Connect it to the Ditch Assist Control Module and verify that the Status 2 light on the module begins to flash, as this indicates that GPS data are being received.

5.4How to Configure Trimble / Case IH GNSS Receivers

To enable NMEA messages on Trimble/Case IH GPS receivers, you can follow these general steps.

Trimble systems using a NAV II or NAV III controller

On these setups, a good option is to use the DB9 serial cable on the Nav Controller harness to connect to our generic DB9 GPS cable. Note here that the GPS cable will need to run into the tractor cab to connect to the Nav harness.

1. On a Trimble display running Precision-IQ, go into the GNSS settings.
2. Open the NMEA Messaging tab and turn messaging on.
3. Tap on message rate and set it to 5 Hz or 10 Hz.
4. Next, select Autopilot as the output port.
5. Note that if a TM-200 is present, you cannot use its Port A to output because this port is actually in use by the Nav controller, even though it gives you the option to select it!

Autopilot with a Pro 700 or Intelliview 4 display

1. The process is similar: open the Nav Settings, and click Edit under the NMEA Output Setup.
2. Turn NMEA output on, and confirm that the Baud Rate is set to 38,400.
3. The speed settings here aren’t relevant for Ditch Assist so you can leave them off.
4. Make sure the Precision and Accuracy settings are set to 8.
5. Return to the settings menu, and open the NMEA Message Settings. Here, you’ll need to enable GGA and VTG at 5 Hz or 10 Hz.

Trimble 372 receiver (RDI / Ag Remote)

For a Trimble 372 receiver, the easiest method is to use RDI on the Pro 700, or Ag Remote on Trimble displays. Usually you’ll program Port A or C (assuming Port B is connected to the RTK radio), but this may differ with specific configurations.

1. On the RDI or Ag Remote screen, press the right arrow twice or until you reach the Configuration option.
2. Press Down to enter the Configuration Menu.
3. Scroll to the Port you need to configure.
4. Set the position output to NMEA (it likely says TSIP currently), and make sure the baud rate is set to 38,400. You should see a line that shows something like 8N1 NMEA 38k.4 when correctly configured.
5. Scroll down again to locate the entry for NMEA1. Make sure GGA is capitalized here, and that all other messages are in lower case.
6. Scroll down again to NMEA2. Make sure VTG is capitalized here and all others are off.
7. Locate the setting for NMEA OUT and set it to ASAP — this should provide the fastest supported message rate, typically 5 Hz.

5.5How to Configure Emlid RS2 and RS3 Receivers

1. Connect to the receiver using the ReachView app on your mobile device or web browser.
2. Open the ReachView app and navigate to the “GNSS Settings” or “RTK Settings” section.
3. Look for the option related to NMEA messages or NMEA output. The specific location may vary depending on the version of ReachView, but it is usually found within the GNSS or RTK settings.
4. Enable or toggle the NMEA messages option. You have the option to select specific NMEA message types or configure the message rate.
5. Set the baud rate to 38,400.
6. Save the changes or apply the settings.
7. The receiver will now output the selected NMEA messages according to the configured settings.

5.6How to Configure Outback GPS Receivers

To enable NMEA messages on Outback GPS receivers, you can follow these general steps:

1. Access the GPS receiver’s menu or settings. This is typically done through a display or user interface on the device.
2. Look for a section related to communication settings or NMEA output configuration.
3. Within the communication settings, you should find an option to enable NMEA messages or configure the NMEA output.
4. Enable the NMEA output or select the desired NMEA message types you want to receive.
5. Check if there are additional settings to adjust the baud rate and message rate — set the baud rate to 38,400 and the message rate to 5 Hz or 10 Hz.
6. Save the changes and exit the menu or settings.

Please note that specific steps may vary depending on the model and firmware version of your Outback GPS receiver. It is recommended to refer to the user manual or consult the manufacturer’s documentation for precise instructions related to your specific model.

5.7GPS Corrections and Accuracy

Ditch Assist relies on a precise GPS signal for optimal performance. If your GPS lacks accuracy, it may impact the performance of Ditch Assist.

Important

If you are not using RTK with your own base station, we highly recommend using a subscription-based correction service with a published vertical accuracy of at worst 2–3 inches as a minimum requirement. It is possible that you may find the GPS accuracy provided by your current system to be insufficient. This is not a fault of Ditch Assist, as it simply processes the incoming GPS data it receives.

Ditch Assist is not compatible with low-accuracy correction signals like WAAS or low-accuracy SBAS corrections such as SF1 or OmniSTAR L1. We recommend, at a minimum, utilizing a subscription-based dual-frequency (L1/L2) satellite-delivered correction signal.

Below are specifications for the recommended GPS corrections:

Please note that while we do not endorse using any correction less accurate than RTK, some users have chosen to use lower accuracy systems and have been satisfied with the performance.

Chapter 6Hardware Troubleshooting

Common hardware, hydraulic, Wi-Fi, and GNSS issues with field-proven fixes. For software questions, see the Ditch Assist app’s built-in manual (Manual tab) and ditchassist.com.

Pressing RAISE on manual control causes the implement to go down

When you press the RAISE button to manually raise the implement it goes down instead. Pressing LOWER also has the opposite effect.

• Reverse the connectors on the Ditch Assist harness that are connected to the PWM valve — switch the Raise and Lower connectors to the opposite solenoids.

Do Not Reverse Hydraulic Flow

DO NOT REVERSE HYDRAULIC FLOW ON THE TRACTOR. THE VALVE CONTAINS A ONE-WAY CHECK VALVE THAT PREVENTS FLOW BACKWARDS THROUGH IT, SO REVERSING THE FLOW WILL SIMPLY RESULT IN NO MOVEMENT AT ALL. THE ONLY CORRECT FIX IS TO SWAP THE RAISE AND LOWER CONNECTORS ON THE VALVE SOLENOIDS.

SupportSupport & Contact

If you encounter any issue you cannot resolve with this manual, our support team is ready to help.

• Phone: +1‑877‑354‑2899 (Press 3 for Support)
• Email: support@ditchassist.com
• Web: ditchassist.com — contact form and knowledge base
• App downloads: ditchassist.com/app.html
• Mail: Northern Plains Drainage Systems Ltd, Box 9, Elm Creek, Manitoba, R0G 0N0, Canada

Hardware & Installation Manual — Revision 2026‑06‑11
© Northern Plains Drainage Systems Ltd. All rights reserved.
Ditch Assist is a product of Northern Plains Drainage Systems Ltd, Elm Creek, Manitoba, Canada.