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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TK2824-2AL20 |
| Alternative Part Number | 3TK28242AL20 |
| Manufacturer | Siemens |
| Product Type | Safety Relay |
| Supply Voltage | AC 230V |
| Mounting Type | Screw and snap-on mounting |
| Terminal Type | Spring-loaded terminals |
| Width | 22.5 mm |
| Height | 120 mm |
| Depth | 120 mm |
| Product Functions | Protective door monitoring, automatic start, emergency stop function, position switch monitoring |
| Safety Integrity Level (SIL) | SIL1 |
| Performance Level (PL) | PL: c |
| Category according to ISO 13849-1 | Category 2 |
| Category according to EN 954-1 | Category 3 |
| Hardware Fault Tolerance | 1 |
| Safety Device Type | Type A |
| Number of Outputs | 2 NO contacts (instantaneous) |
| Operating Temperature Range | -25 … +60 °C |
| Storage Temperature Range | -40 … +80 °C |
| Protection Class IP (Housing) | IP40 |
| Protection Class IP (Terminal) | IP20 |
| Insulation Voltage | Rated at 300 V |
| Ambient Air Pressure | 90 … 106 kPa |
| Relative Humidity | 10 … 95 % |
| Installation Altitude | Up to 2,000 m above sea level |
| Resistance to Vibration | 5 ... 500 Hz: 0.075 mm |
| Resistance to Shock | 8g / 10 ms |
| Impulse Voltage Resistance | Rated at 4,000 V |
| EMC Emitted Interference | EN 60947-5-1 |
| Installation Environment for EMC | Suitable for Class A environments only |
The Siemens 3TK2824-2AL20 is a sophisticated safety relay designed to enhance the operational security of machinery and plant equipment. This component is part of the SIRIUS safety relay range and is specifically engineered for use with emergency-stop units. It operates with a control supply voltage of AC 230V and features a compact width of 22.5mm, making it suitable for integration into various control systems without demanding excessive space.
Equipped with spring-loaded terminals, the 3TK2824-2AL20 ensures a secure and maintenance-free electrical connection, facilitating quick and reliable installation. The relay release circuits (RC) include two normally open (NO) contacts for instantaneous actions, while the mechanical contacts (MC) are not present in this model. The device supports an autostart function and is classified as a basic device within its series.
The 3TK2824-2AL20 is capable of achieving a Safety Integrity Level (SIL) of 1 and a Performance Level (PL) of C, according to the relevant standards. It is designed to operate within a wide range of ambient temperatures, from -25°C to +60°C, ensuring consistent performance in diverse working environments.
This safety relay is also characterised by its robust design, with a protection class of IP40 for the housing and IP20 for the terminals, providing finger-safe protection against electrical shock. The relay is designed to resist electrical interference as per EN 60947-5-1 and can handle impulse voltage resistance up to 4,000V.
The 3TK2824-2AL20 is suitable for a variety of safety applications, including protective door monitoring, emergency stop function, and position switch monitoring. It is not designed for light barrier, standstill, or rotation speed monitoring, ensuring that it is utilised for its intended safety functions.
In summary, the Siemens 3TK2824-2AL20 safety relay is a reliable and efficient solution for managing safety-related circuits in industrial settings, contributing to the overall safety and compliance of equipment operations.
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Frequently Asked Questions
What is the voltage rating for this safety relay?
The safety relay is rated for AC 230V control supply voltage.
Can this safety relay be used with emergency stop circuits?
Yes, it is designed for use with EMERGENCY-STOP units and has an emergency stop function.
What type of terminals does this relay have for electrical connections?
It features spring-loaded terminals for secure and reliable electrical connections.
What is the width of the safety relay?
The width of the safety relay is 22.5mm, making it suitable for compact installation spaces.
Is this device suitable for use in residential environments?
This product is suitable for Class A environments only and may cause radio-frequency interference in residential environments, which would require the user to take appropriate measures.
What is the maximum installation altitude for this safety relay?
The maximum installation altitude for the safety relay is 2,000 meters above sea level.
What are the operating and storage temperature ranges for this relay?
The operating temperature range is -25 to +60°C, and the storage temperature range is -40 to +80°C.
Does this safety relay have a TÜV certificate?
Yes, the 3TK2824-2AL20 has a TÜV certificate, confirming its compliance with relevant safety standards.
What is the product's IP rating?
The housing of the safety relay has an IP40 rating, and the terminal has an IP20 rating.
What is the maximum number of electrical operating cycles for this relay?
The relay has a typical electrical operating cycle of 100,000.
Can this relay be mounted in any position?
Yes, the relay can be mounted in any position, providing flexibility in installation.
What is the Safety Integrity Level (SIL) of this relay?
The relay has a Safety Integrity Level (SIL) of 1 according to IEC 61508.
What type of product approvals does this relay have?
The relay has approvals from BG, SUVA, UL, CSA, and conforms to standards such as EN 60204-1, EN ISO 12100, EN 954-1, and IEC 61508.
