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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RK1105-1BE04-2CA0 |
| Alternative Part Number | 3RK11051BE042CA0 |
| Manufacturer | Siemens |
| Category | General Automation |
| Mounting Type | DIN Rail Mount |
| Dimensions | 45 x 120 x 104 mm |
| Weight | 0.370 kg |
| Operating Voltage | 230 V ac/dc |
| Response Time | Max. 40 ms |
| Protection Class | IP20 |
| Ambient Operating Temperature | -20°C to +60°C during operation, -30°C to +70°C during storage |
| Safety Monitor Type | Type 4, Version 3 |
| Performance Level | Up to PL e (EN ISO 13849-1) |
| Safety Integrity Level | Up to SIL 3 (IEC 61508) |
| Number of Enabling Circuits | 2 |
| Number of Release Circuits | 2 |
| Rated Operational Current Ie | AC-12, 50/60 Hz / 250 V at 3 A, DC-12 (DC-1) / 24 V at 3 A |
| Protocol Support | AS interface protocol |
| Design | Safety monitor with expanded functionality |
| Connection Type | Screw terminal (removable) |
| Commodity Code | 85364900 |
The Siemens 3RK1105-1BE04-2CA0 is a sophisticated safety monitoring relay designed to enhance the safety of industrial automation systems. This relay is an integral component for applications requiring stringent safety measures, as it is capable of monitoring emergency stop functions and safety gates. With its ability to be used up to Category 4 (EN954-1), Performance Level E (EN ISO 13849-1), and Safety Integrity Level 3 (IEC 61508), it meets the highest safety standards in the industry.
The device features two enabling circuits and a swift response time of a maximum of 40 milliseconds, ensuring rapid action in critical situations. The safety monitor is equipped with screw terminals that are removable, facilitating easy installation and maintenance. It is designed for use with the AS-Interface / AS-i Safety at Work protocol, making it a versatile choice for a variety of safety applications.
With a compact design, the relay measures 45 mm in width, 108 mm in height, and 120 mm in depth, allowing for efficient use of space within control cabinets. It can be mounted using screws or on a standard rail, providing flexibility in installation. The IP20 protection class rating ensures that the device is protected against solid objects larger than 12.5 mm, although it is not waterproof and should be installed in a dry environment.
The Siemens 3RK1105-1BE04-2CA0 is a reliable and essential component for any industrial setting where safety is paramount. Its robust construction and compliance with rigorous safety standards make it a trustworthy choice for safeguarding both machinery and personnel.
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Frequently Asked Questions
What is the function of this safety monitoring relay?
The safety monitoring relay is designed to monitor safety devices such as emergency stop switches. It ensures that these devices are functioning correctly and safely, providing a critical component in machine safety systems.
Can this relay be used in high safety requirement applications?
Yes, this relay is suitable for applications requiring high safety standards. It is applicable up to Category 4 (EN 954-1), up to Performance Level E (EN ISO 13849-1), and up to Safety Integrity Level 3 (IEC 61508).
What are the ambient operating conditions for this relay?
The relay can operate in ambient temperatures ranging from -20°C to +60°C and can be stored in temperatures from -30°C to +70°C.
What type of mounting does this relay support?
This relay supports both screw and standard rail mounting types, providing flexibility for installation in various control cabinet setups.
What is the response time of the relay's safety outputs?
The safety outputs of the relay have a maximum response time of 40 milliseconds, ensuring timely activation of safety measures.
What is the protection class of this relay?
The relay has a protection class of IP20, indicating that it is protected against solid objects larger than 12.5mm but not against water.
How many enabling circuits does this relay have?
The relay features two enabling circuits, allowing it to control multiple safety functions simultaneously.
What is the rated operational current for this relay?
The rated operational current for AC-12 at 250 V is 3 A, for DC-12 at 24 V is also 3 A, and it varies for other specific voltage and current configurations.
Does this relay have any certifications or approvals?
Yes, the relay has general product approvals for EMC and Functional Safety/Safety of Machinery, along with a Declaration of Conformity and a Type Examination Certificate.
What type of electrical connection does this relay use?
The relay utilises screw terminals for its electrical connections, which are known for their reliability and ease of use.
