Information

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Siemens IC 10 · 2018
SIRIUS ACT Pushbuttons and Indicator Lights
General data
13
■ Application
Environmental conditions
The pushbuttons and indicator lights are climate-proof (KTW 24)
and suitable for standard industrial applications and operation in
marine applications.
Simple electrical equipment
Non-illuminated actuators, contact modules, enclosures and
special accessories can be classified as simple electrical
equipment according to IEC 60079-11. This means that
they may be used in intrinsically safe circuits in potentially
explosive atmospheres. An overview of the devices and
atmospheres can be found in Confirmation No. 3287.01.
Safety EMERGENCY STOP pushbuttons according to
ISO 13850
For controls according to IEC/EN 60204-1, the SIRIUS ACT
mushroom pushbuttons are suitable for use as safety
EMERGENCY STOP pushbuttons.
Safety circuits
The IEC/EN 60947-5-1 standard requires positive opening.
This means that for the purpose of personal safety, the reliable
opening of NC contacts in all safety circuits is expressly
prescribed for the electrical equipment of machines and is
designated according to IEC 60947-5-1 with the symbol ( ).
Category 4 according to EN ISO 13849-1 can be attained
with the EMERGENCY STOP mushroom pushbuttons if the cor-
responding fail-safe evaluation units are selected and correctly
installed, e.g. the 3SK11 safety relays or the 3RK3 Modular
Safety System
(see page 11/1 onwards) or matching units from
the ASIsafe, SIMATIC or SINUMERIK product ranges.
The SIRIUS ACT pushbuttons and indicator lights can be
connected to the AS-Interface communication system quickly
and safely.
The following solutions are available:
• AS-Interface modules
• AS-Interface module in safety-related version for
EMERGENCY STOP mushroom pushbutton
• Ready-fitted AS-Interface enclosures with 1 to 6 command
points
IO-Link
The SIRIUS ACT pushbuttons and indicator lights can be
connected to IO-Link quickly and safely. The connection is made
via a special IO-Link module.
© Siemens AG 2017