Steering controller APS Steering controller APS

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3rd generation power steering controller

With the Advanced Power Steering (APS) controller, meticulously engineered to fulfill the requirements set forth by the European standards for functional safety, Inmotion consolidates its market leadership for steer-by-wire systems.
The APS directly interfaces a variety of steering input devices and motor types. It can function and operate in a stand-alone steering system, or as a part of an overall CANopen based vehicle system. The product range covers a wide variety of vehicle applications including Class 1, 2, and 3 lift trucks.

While the APS is of course easily integrated with Inmotions own PSM steering actuator, it will function well with a wide variety of steering motors to ensure optimal fit into all vehicle types.


  • Best in class quality and reliability, achieved through superior design and outstanding manufacturing processes
  • Rugged design suitable for the demanding environment of electric vehicles. Protected against ingress of dust and water to IP65.
  • Software quality by software development according to Automotive Spice ©
  • Software platform allows extensive functional customizations for optimal integration in target vehicle, without compromising safety supervision functionality.
  • Powerful primary ARM processor and operating system allows parallel execution of customized vehicle control tasks and motor control tasks
  • Second ARM processor for redundant supervision according to ISO13849-1, category 3.
  • Extensive and powerful event handling and data logging simplifies troubleshooting and minimizes vehicle down time
  • Supports AC induction, AC synchronous and brushless DC motors.
  • Small physical size with flat heat sink for flexible integration
  • High side output with dual switches controlled by main and supervision functions for redundant execution of safety function
  • Integrated CAN bus with support for diagnostics and software download
  • Industry standard CANopen protocol for reliable communication in the vehicle
  • Dual redundant CAN nodes for distributed system architectures

Atech Antriebstechnik

Advanced Power Steering (APS3)

Dimensions: 150x120x56mm

Input voltage - max. power (A rms):
24V - 70/80(90)A
36V - 70/80(90)A
48V - 70A
80V - 40A

24V - 70/80(90)A
UL 583 certification and EC declaration of incorporation of partly completed machinery according to EN1175-1.

Data sheet