TS ISO 7296-3

TS ISO 7296-3 is the standard for graphical symbols used on operator controls and other displays on tower cranes. In tower-crane practice, these symbols help present control functions and machine status in a quick, consistent and language-neutral way, which is especially valuable when similar control layouts must be understood across different manufacturers or sites.

The role of graphical symbols on tower cranes

In general technical terms, graphical symbols are used to communicate operating functions without relying on written labels. On cranes, they commonly support functions such as hoisting, slewing, trolley travel, braking and warning indication. For tower cranes, this creates a more consistent relationship between the operator, the control interface and the visual indicators used in the cab or on associated panels.

What this part covers

• The standard applies to tower cranes as defined in ISO 4306-3.
• It establishes symbols for use on operator controls and other displays.
• Its purpose is to support consistent graphical presentation on tower-crane interfaces.
• The scope is limited to the tower-crane equipment class named in the title and abstract.

As a general concept, a symbol standard like this supports training, reduces ambiguity and helps operators recognise similar crane functions more readily across installations. In practice, the actual implementation of the symbols still depends on the machine design, control arrangement and the wider safety framework; the standard itself focuses on harmonising the graphical language used on the equipment.