5.1.3 3SK1111 Standard basic unit instantaneous (with relay outputs)
5.1.3.1 General information
Article number
3SK1111-xAB30 24 V AC/DC
3SK1111-xAW20 110 ... 240 V AC / DC
(wide-range supply)
x = 1: Screw-type terminal; x = 2: Spring-loaded (push-in) terminal
Device features
• 2 sensor inputs (channels 1 and 2)
• 1 input for feedback circuit and START button
• 3 safety-related outputs (NO contacts),
• 1 semiconductor signaling circuit (non-safety-related circuit, NC contact)
• 2 LEDs for displaying the operating states
• Slide switch for function setting
• Single-channel or two-channel connection
• Cross-circuit detection between sensor channels 1 and 2
• Enclosure width 22.5 mm
• Removable terminals
5.1.3.2 Function description
The 3SK1111 Standard basic unit is a two-channel safety relay for EMERGENCY OFF and
EMERGENCY STOP equipment in accordance with EN 60204-1.
The device is equipped with positively-driven relays and monitors itself during every ON/OFF
cycle.
The device has 3 safety-related outputs as NO circuits and one semiconductor signaling circuit
(non-safety-related circuit, NC contact).
On the front of the device there is a slide switch for function setting and 2 LEDs for displaying the
operating states.
3SK1 / 3RQ1 devices
5.1 3SK1 standard
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
54 Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005
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