DG-VRA: Variable Rate Application ECU for Manure Spreaders

NIR & Imaging

Data Management

Mobile Apps

Indicators and ECU

Load Cells

Accessories

Precision manure spreading with ISOBUS control

Accurate manure application is essential to reduce input costs, improve nutrient efficiency, and comply with environmental regulations. DG-VRA provides a complete control system for variable rate manure spreading, ensuring that the applied rate matches the target value in real time.

Thanks to ISOBUS integration, tractor speed is acquired directly from the vehicle and used to continuously adjust the spreading process.

Real weight-based variable rate control

DG-VRA controls the application rate using real-time load cell data combined with internal belt speed (PWM) regulation.

Key advantages

Mass-based VRA (t/ha – t/ac) derived from actual weight
Closed-loop control: belt speed adjusted on real flow feedback
Compensation of density and moisture variability in manure
Immediate correction of rate deviation vs target
Stable and repeatable application in dynamic field conditions

Control based on real data, not assumptions

ISOBUS connectivity

DG-VRA regulates application in AUTO mode based on target rate, while also allowing MAN mode with direct operator control of chain speed through PWM. During work, the operator can adjust the target rate at any time for greater flexibility in the field.

Key features

AUTO mode: closed-loop control based on target rate (t/ha – t/ac)
MAN mode: direct operator control of chain speed via PWM
On-the-go adjustment: target rate editable at any time on VT
Tractor speed acquired from GPS

Seamless ISOBUS Integration for Virtual Terminal Control

Main Features

DG-VRA the ECU for OEMs

DG-VRA is designed for manufacturers who need an ISOBUS-ready manure spreading control system that combines:

Variable rate logic
Guided setup
Custom alghoritms based on machine design
Automatic calibration
Machine status management
Job data storage

Improved user interface

All working parameters are fully visible and editable directly from the interface, thanks to an improved user experience specifically designed for real field conditions. The layout ensures clear data visualization, fast access to key functions, and intuitive interaction, allowing the operator to monitor and adjust the spreading process efficiently during work.

System architecture and connectivity

DG-VRA features a modular architecture designed for seamless integration on manure spreaders, combining multiple inputs and outputs for precise control of the spreading process. The ECU connects directly to load cells for real-time weight measurement, ensuring accurate mass-based application. Additional inputs include chain speed (RPM) and belt control (PWM), enabling closed-loop regulation of the internal conveyor system.

The system supports CAN communication for integration with ISOBUS networks and external devices, while optional sensors such as an inclinometer improve accuracy in uneven field conditions. Power supply and dedicated connectors are designed for reliable operation in demanding agricultural environments.

This architecture allows DG-VRA to operate as a central control unit, managing data acquisition, machine control, and communication within a complete precision farming ecosystem.

Do you need more information about DG-VRA?

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