Danfoss Power Solutions has introduced the PC-AC MultiMotor, a propel controller and software solution for hydrostatic transmissions. The system is intended for applications using one pump with two or four drive motors and provides traction control for each wheel or axle from zero to maximum ground speed on different terrains. Built on the company’s PC-AC Core propel software platform, the solution is designed to provide consistent control and simplify setup, helping reduce development time for propel subsystems.
The PC-AC MultiMotor includes technical features such as anti-slip control, anti-block control and axle load distribution control. The anti-slip function helps prevent wheel slippage to improve traction and vehicle stability. Anti-block control limits wheel locking or reverse rotation during braking to support vehicle control, reduce stopping distance and lower the risk of skidding. This feature also helps maintain steering ability during braking, particularly in emergency situations or on low-friction surfaces. Axle load distribution control adjusts traction and stability by compensating for slopes, load shifts and vehicle configuration.
PC-AC MultiMotor is a configurable off-the-shelf solution designed to help reduce development time. The software is set up through Danfoss’ PLUS+1 Service Tool, allowing users to customize features without developing software from the ground up. The propel subsystem can typically be started and tuned within about a week. The PLUS+1 software toolchain is certified for functional safety (IEC 61508 and ISO 26262), which can help reduce documentation and testing needs. Together, these features are intended to shorten overall development time and speed product readiness.
PC-AC MultiMotor operates with the Danfoss XL104 microcontroller, a PLd/SIL 2 certifiable controller that meets current functional safety standards. The software supports multiple steering configurations, including Ackermann single- or dual-axle and articulated steering. It is designed to improve steering precision and compatibility across different machine types. Typical four-motor system applications include sprayers, grape harvesters, self-propelled agricultural equipment and wheel-assist systems. Two-motor configurations are commonly used in feeder mixers, forage harvesters, graders and mining equipment.
Danfoss Power Solutions
