User Manual

3SU18 enclosures
8.2 Enclosures with EMERGENCY STOP devices
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 02/2015, A5E03457306020A/RS-AB/002
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8.2
Enclosures with EMERGENCY STOP devices
EMERGENCY STOP according to ISO 13850
For control systems according to IEC 60204-1 or DIN EN 60204-1 (VDE 0113 Part 1), the
EMERGENCY STOP mushroom pushbuttons of the 3SU1 series can be used as
EMERGENCY STOP devices.
Safety circuits
Standards IEC 60947-5-1 and EN 60947-5-5 require positive opening. With regard to
personal protection, positive opening of normally closed contact elements in all safety
circuits is expressly prescribed for the electrical equipment of machines and is designated
according to IEC 60947-5-1 with the positive opening symbol
.
With the EMERGENCY STOP mushroom pushbuttons, PL e according to ISO 13849-1 or
SIL 3 according to IEC 62061 can be achieved if the corresponding fail-safe evaluation
devices are selected and correctly connected. The 3SK safety relays, the 3RK3 Modular
Safety System, or the corresponding devices from the ASIsafe, SIMATIC and SINUMERIK
programs can be used as fail-safe evaluation devices.