The Drive Controller SD2 by SIEB & MEYER provides a smart solution for ensuring safety and protection in machining centers and machine tools. With the integrated sensorless safety functions SFM and SLOF, the controller allows for the monitoring of spindle standstill and the safe limitation of rotational speed, without the need for additional encoders. This results in enhanced safety measures while reducing costs and maintenance efforts.
Integrating Safety Features: The Solution for Machine Builders
The challenge faced by machine builders is to ensure both personal safety and productivity in accordance with regulations. Traditional safety solutions require speed sensors on motors or spindles to detect or prevent dangerous operating conditions. However, these sensors take up space, have a risk of failure, and incur costs for installation, maintenance, and replacement.
The SD2 Drive Controller from SIEB & MEYER offers TÜV-certified safety functions that eliminate the need for additional encoders on spindles. The SFM and SLOF functions are integrated directly into the controller, ensuring optimal safety and reducing the risk of dangerous operating conditions. With these safety features, machine operators can have peace of mind knowing that the spindle will come to a safe stop and critical speed limits will not be exceeded.
The SFM (Safe Frequency Monitor) function ensures the safe stopping of a non-encoder spindle or the verification that it has reached a predefined safe speed. In cases where the spindle fails to stop or the speed exceeds the defined limits, access to the machine interior or certain areas, such as protective doors, will remain locked to prevent any potential hazards.
The Safe Limited Output Frequency (SLOF) feature in the Drive Controller prevents a spindle from exceeding critical rotational speeds, thus minimizing the risk of tool breakage due to over-speeding or exceeding specific critical speeds during setup operations. When the pre-set threshold is exceeded, the system automatically activates the Safe Torque Off (STO) function, disabling any further torque generation. This ensures a controlled and safe stoppage of the spindle.
The addition of a Lastindikator in all Drive Controllers of the SD2x and SD4x series provides a valuable tool for tool monitoring in machining centers and machine tools. By evaluating the torque-producing current of the motor, the Lastindikator eliminates the need for acoustic body sound sensors. It accurately detects changes in the motor’s load, allowing for early detection of tool wear or breakage, improving overall productivity and reducing maintenance costs.
The SIEB & MEYER Drive Controller SD2 provides production enthusiasts with an intelligent solution to enhance the safety and efficiency of their machining centers and machine tools. By incorporating the integrated safety functions SFM and SLOF, the need for additional encoders is eliminated, resulting in space savings, cost reduction, and decreased maintenance requirements. Furthermore, the inclusion of a precise tool monitoring feature through the use of the Last Indicator sets a new standard for workplace safety in the manufacturing industry.
