• Upgrade of the testing chambers from functional check to current monitoring with values important for quality management
• Flexible change between four different maximum AC voltages from 50 V to 230 V in the testing chambers

• Integration of safety engineering into the same controller as for standard automation

At the Bosch Power Tools plant in Murrhardt, premium quality power tools are produced. Function testing plays an important role. The company has a unit dedicated to producing its own production equipment, and one of their tasks is to build test chambers that are used to confirm the performance of their tools by means of current monitoring. Measuring instruments with IO-Link communication have proved to be the best solution for this task.

Instead of temperature sensors attached at the tools, Bosch Power Tools uses SIRIUS 3UG4822 current monitoring relays in the testing chambers, which are directly connected to the distributed I/O SIMATIC ET 200SP via IO-Link and which provide more data for enhanced diagnostics. Furthermore, safety engineering is integrated into the same platform as for standard automation by using the fail-safe F-CPU on the distributed I/O system. The complete engineering was performed via TIA Portal.