Dual-handle operation

Two-hand operation is a safety-relevant control unit that ensures that a machine or system can only be started up if the operator places both hands on two separately arranged actuating elements at the same time. This principle prevents one hand from being in the danger zone of the machine while the start impulse is triggered.

The aim of two-hand operation is to protect operating personnel from crushing, cutting or other mechanical injuries when starting automated or powerful processes. The requirements for design, safety distance, synchronization and resetting behaviour are defined in the standards EN ISO 13851 (formerly EN 574) and EN ISO 12100 are defined. Among other things, these standards regulate the minimum distances between the buttons in order to prevent one-handed operation, as well as the required simultaneity of actuation.

A generally understandable explanation of the functional principle can also be found in the Wikipedia article on the two-hand control.

Two-handed operation is used in particular for applications with increased hazard potential - e.g. cutting, pressing or stirring processes.

Two-hand operation and the PTM control panel

PTM mechatronics offers a specially developed control panel with integrated two-hand operation for its stand mixers. This not only complies with the relevant safety standards, but its ergonomic design and clear user guidance enable convenient and safe control of the stirring process - ideal for use in sensitive production environments such as the food, pharmaceutical and chemical industries.

Find out more in a personal consultation with one of our application experts: