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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3SK1122-1CB41 |
| Alternative Part Number | 3SK11221CB41 |
| Manufacturer | Siemens |
| Product Category | Safety Relays |
| Product Designation | SIRIUS safety relay Basic unit Advanced series |
| Time Delay Range | 0.05-3 seconds |
| Enabling Circuits | 2 NO (Normally Open) electronic |
| Control Supply Voltage | 24 V DC |
| Terminal Type | Screw terminal |
| Protection Class IP | IP20 |
| Insulation Voltage Rated Value | 50 V |
| Ambient Temperature Operation Range | -25 to +60 °C |
| Ambient Temperature Storage Range | -40 to +80 °C |
| Installation Altitude | Up to 2000 metres above sea level |
| Vibration Resistance | According to IEC 60068-2-6: 5 ... 500 Hz, 0.75 mm |
| Shock Resistance | 10g / 11 ms |
| Surge Voltage Resistance | Rated value 800 V |
| EMC Emitted Interference | IEC 60947-5-1, Class A |
| Overvoltage Category | 3 |
| Degree of Pollution | 3 |
| Safety Integrity Level (SIL) | According to IEC 61508: SIL3 |
| Performance Level (PL) | According to EN ISO 13849-1: e |
| Category According to EN ISO 13849-1 | 4 |
| Safe Failure Fraction (SFF) | 99% |
| Number of Sensor Inputs | 1-channel or 2-channel |
| Cascading Design | Yes |
| Safety-Related Wiring of Inputs | Single-channel and two-channel |
| Cross-Circuit-Proof | Yes |
| Mounting Position | Any |
| Required Spacing for Grounded Parts | 5 mm at the side |
| Fastening Method | Screw and snap-on mounting |
| Width | 22.5 mm |
| Height | 100 mm |
| Depth | 121.6 mm |
| Electrical Connection Type | Screw-type terminals |
| Connectable Conductor Cross-Sections | Solid: 1x (0.5 ... 2.5 mm²), 2x (1.0 ... 1.5 mm²) Finely stranded with core end processing: 1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²) |
| AWG Cables Compatibility | Solid: 1x (20 ... 14), 2x (18 ... 16) Stranded: 1x (20 ... 16), 2x (20 ... 16) |
The Siemens 3SK1122-1CB41 is a state-of-the-art SIRIUS safety relay, belonging to the Advanced series, equipped with a time delay feature ranging from 0.05 to 3 seconds. This robust unit is designed to enhance the safety of industrial control systems by providing electronic enabling circuits with 2 normally open (NO) contacts for instantaneous and delayed switching operations. With a rated control supply voltage of 24 V DC and screw terminal connections, it ensures reliable and secure integration into a variety of safety applications.
Crafted for performance and reliability, the 3SK1122-1CB41 boasts an IP20 protection class, ensuring finger-safe operation and protection against solid objects. The unit is capable of operating in a wide range of ambient temperatures, from -25 to +60 degrees Celsius, making it suitable for diverse working environments. Its compact design allows for efficient use of space within control panels, and its screw-type terminals provide a secure and maintenance-friendly connection.
The safety relay is engineered to support both single-channel and two-channel sensor inputs, with a design that facilitates cascading. It also features cross-circuit-proof technology, enhancing its operational safety. With a high Safety Integrity Level (SIL) of 3 and a Performance Level (PL) of e, according to IEC 61508 and EN ISO 13849-1 respectively, the 3SK1122-1CB41 is a reliable choice for managing critical safety functions in automated processes.
This advanced safety relay is an ideal solution for a range of applications, including monitoring safety switches, floating and non-floating sensors, and magnetically operated switches. Its parameterizable functions allow for tailored safety measures, such as monitored start-up, automatic start, and time delay adjustments, providing flexibility to meet specific safety requirements.
The Siemens 3SK1122-1CB41 represents a blend of innovation and dependability, designed to support the highest standards of safety in industrial automation.
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Frequently Asked Questions
What is the purpose of the SIRIUS safety relay Basic unit Advanced series?
The SIRIUS safety relay Basic unit Advanced series is designed to provide electronic enabling circuits for safety applications. It features time delay functionality ranging from 0.05 to 3 seconds and is equipped with 2 normally open (NO) contacts for instantaneous and delayed operations, ensuring safe and controlled machinery operations.
Can the time delay on this safety relay be adjusted?
Yes, the time delay on this safety relay is adjustable, allowing for a range between 0.05 to 3 seconds to suit various safety control requirements.
What type of power supply is required for this safety relay?
This safety relay requires a 24 V DC control supply voltage to operate effectively.
Is this safety relay suitable for use in residential environments?
This product is intended for Class A environments and may cause radio-frequency interference in residential settings. Appropriate measures should be taken to mitigate any potential interference.
What is the maximum operating frequency of this safety relay?
The maximum operating frequency for this safety relay is 2,000 operations per hour.
What type of inputs can be connected to this safety relay?
The safety relay can accommodate both single-channel and two-channel sensor inputs, providing flexibility for various safety sensor configurations.
What is the significance of the Safe Failure Fraction (SFF) for this relay?
The Safe Failure Fraction (SFF) indicates the proportion of safe failures to the total number of failures. For this relay, an SFF of 99% means that the vast majority of failures are safe, contributing to the overall reliability of the safety system.
What is the Performance Level (PL) of this safety relay?
The Performance Level (PL) for this safety relay is 'e', which is the highest level defined in EN ISO 13849-1, indicating that it provides a very high level of safety performance.
How can this safety relay be mounted?
The safety relay can be mounted in any position and offers both screw and snap-on mounting options for easy installation.
What type of electrical connections does this safety relay support?
This safety relay is equipped with screw-type terminals for secure and reliable electrical connections.
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