SIRIUS 3SK Safety Relays

Do you want to implement more complicated safety functions with typical SIRIUS simplicity?

If so, the new 3SK2 basic units are exactly what you’re looking for. Unlike the proven 3SK1 safety relays which fail-safe shutdown is always triggered simultaneously for all outputs the 3SK2 relays, the fail-safe outputs can be disconnected independently.

The 3SK2 units can be easily parameterized using software. Because the fail-safe outputs can be used freely, during parameterization it is possible to specify the sensor/s that will act on each individual output/s when they are actuated.

More Highlights of the 3SK2:

• Efficient semiconductor outputs adaptable to different loads by setting parameters

• Simple implementation of muting and protective door monitoring with interlock

• Simple commissioning and diagnostics, which simplifies the software if more critical safety functions are required

Do you need multiple safety functions for your plant concept that selectively shut down parts of your plant?

With 3SK2, there are two unit variants available for this purpose:

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The narrow 3SK2 basic unit provides up to 10 fail-safe Inputs.

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The 45-mm-wide 3SK2 basic unit provides up to 20 fail-safe inputs.

Another highlight is its exchangeable memory module that facilitates the exchange of units. Status and diagnostic messages on the unit display also help reduce plant downtime and assist with troubleshooting.

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SIRIUS 3RM1 fail-safe Motor starter Output expansion

Would you like to safely switch small motors up to three kW in the 3SK1 system? If so, expand your basic unit with a SIRIUS 3RM1 fail-safe motor starter. Thanks to the new fail-safe motor starters, for the first time safety technology now meets classic control technology in the form of the fail-safe motor starters in the 3SK1 system.

The motor starters are available as fail-safe direct-on-line and reversing starters. They not only deactivate motors safely in conjunction with the safety relays but also protect them against overload. The motor starter also uses a low-wear and energy-efficient hybrid switching technology. Now devices from the main and control circuits can converge in an integrated safety relay system via device connectors.

Advantages at a glance:

• Saves on Hardware

• Reduces wiring and thus decreases the potential for Errors

• Creates more space in the switchgear cubicle

•  Motorstarter SIRIUS 3RM1 Failsafe

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4RO output extension

Is the number of outputs on the basic unit insufficient for your application?

If so, you can expand the basic unit with the 4RO contact expansion. This expansion features four relay outputs for switching currents up to five A.

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3RO output extension

Do you require special switching characteristics?

Opt for contact expansion with three power relay outputs for switching high currents up to 10 A.

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Input extension

Does your application need more than one sensor?

Save on the number of basic units required with the 3SK1 advanced range. Instead of adding basic units, now all you need is one input extension.

The 24-V power supply provides voltage to up to six components – basic units and input or output extensions. It covers all control voltages commonly used worldwide from 110 to 240 V AC/DC: This means that the safety relays can be applied internationally.