No fear of encoder failure

With the “Encoderless Stop” protection function, the drive can be brought to a controlled stop either along a predefined ramp or at the current limit.

To control a synchronous motor, the rotor position must be known at all times. If the encoder fails, this information is no longer available, and the motor can no longer be decelerated in a controlled manner. In applications such as handling axes, injection molding machines, or robots, this can lead to damage to the machine, tools, or products.

That’s why drive specialist Baumüller developed the “Encoderless Stop” function. When an encoder fault is detected, the system switches to encoderless operation within milliseconds. This allows the drive to be decelerated either along a defined ramp or at the current limit – and therefore with the maximum possible torque. This prevents damage from collisions, along with long downtimes, repair costs, and replacement expenses.

Application example: the plastics industry
A handling system on an injection molding machine transports the finished plastic parts out of the machine. If the mechanical components were to coast uncontrolled at full speed due to an encoder fault, a collision with the expensive injection mold could occur, causing significant financial damage. With the “Encoderless Stop” protection function, the motor can be decelerated in a controlled way, preventing damage.

Drive-integrated functions
The Baumüller Group covers the entire spectrum of electric drive technology and is a specialist in drive-integrated motion control and monitoring functions. In addition to reliable hardware that meets the highest requirements for precision, speed, and efficiency, the company has developed countless drive-integrated functionalities to improve machine performance and maximize machine availability. The drives of the b maXX family feature numerous protection functions that allow real-time response to unwanted events in order to protect mechanical components and tools from damage.