Page 256 - PLC Automation

254 MAIN CATALOG PLC AUTOMATION

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Application descriptions

Triggering safety actions using

standard HMI

With ABB’s AC500-S safety PLC, standard HMIs Operators of these industrial applications need
such as control panels and mobile devices can be to reconfigure their safety control functions to
used to alter functional safety control functions adapt to changed application conditions and to
in industrial applications. ABB has developed a optimize machine productivity. These reconfigu-
method of using standard human machine inter- rations, known as safety actions, are often per-
face (HMI) products such as control panels, indus- formed using mechanical or electro-mechanical
trial PCs and mobile devices to reconfigure safety mode selector switches connected to the digital
control functions. safety inputs of a safety PLC.

Using ABB’s AC500-S safety PLC, operators of This method suffers from limited user-friendliness,
equipment such as harbor and factory cranes, inability to make modifications to switch layout
hoists, elevators, airport passenger bridges, and function, limited number of selection options
automatic guided vehicles (AGVs), robots, mining and relatively high costs for the mode selector
and pulp & paper machinery can select, modify switches and digital safety input channels.
and amend their safety control functions. This
allows them to achieve functional safety standard ABB solves these challenges by allowing standard
requirements while benefiting from the con- HMIs, such as control panels, industrial PCs and
venience and low costs of using standard HMIs. mobile devices to interface with an ABB AC500-S
safety PLC to carry out these safety actions.

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