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Emergency-stop pushbuttons

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article image Emergency-stop pushbuttons.

THE AS-Interface Safety at Work is the safety technology arm of the AS-i system.

The integration of a Schlegel Elektrokontakt emergency-stop pushbutton only requires the installation of one safety monitor on the branch.

The operation of both safe and non-safe AS-Interface components in one system is possible without conflict.

The safety monitor monitors the data communication on the AS-Interface line.

For the safe slaves, dynamic code sequences that are stored in each slave are transmitted. These are "learned" by the safety monitor during commissioning.

During operation, the safety monitor compares the nominal and actual sequences of the emergency-stop pushbutton in each cycle.

If the safe slave (such as an emergency-stop pushbutton) supplies a wrong code sequence, the safety monitor reacts immediately by switching off the machine.

The Schlegel slaves fit onto several emergency-stop heads out of the existing Schlegel Elektrokontakt program.

A safety contact (patent pending) securely disconnects if the contact unit is separated from the actuator.

The AS-Interface system is available from ANZ Controls Pty Ltd .

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