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Siemens
3TK2827-1BB40
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This part is currently sold out
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TK2827-1BB40 |
| Alternative Part Number | 3TK28271BB40 |
| Manufacturer | Siemens |
| Category | General Automation |
| Supply Voltage | 24 V DC |
| Terminal Type | Screw Terminal |
| Mounting Type | Screw and snap-on mounting |
| Mounting Position | Any |
| Width | 44.8 mm |
| Height | 138.5 mm |
| Depth | 120 mm |
| Product Function | Monitored start-up, EMERGENCY OFF function, Pressure-sensitive mat monitoring |
| Safety Integrity Level (SIL) | SIL3 for basic functions, SIL2 for delayed release circuit |
| Performance Level (PL) | PL e for basic functions, PL d for delayed release circuit |
| Category according to EN ISO 13849-1 | 4 |
| Number of Sensor Inputs | 1-channel or 2-channel |
| Number of Outputs | 2 NO contacts for immediate actions, 2 NO contacts for delayed actions, 1 NC contact for signal |
| Operating Temperature Range | -25 to +60 °C |
| Storage Temperature Range | -40 to +80 °C |
| Installation Altitude | Up to 2000 m above sea level |
| Vibration Resistance | 5 to 500 Hz: 0.075 mm |
| Shock Resistance | 8g / 10 ms |
| Insulation Voltage | Rated value 300 V |
| EMC | Suitable for Class A environments only |
| Approvals | UL, CSA, TÜV, BG BIA |
| Commodity Code | 85364900 |
| Weight | 0.450 kg |
The Siemens 3TK2827-1BB40 is a robust safety relay designed to enhance the operational safety of various industrial applications. This component is part of the SIRIUS range and is engineered to seamlessly integrate with emergency stop units, providing reliable and efficient performance. With a control supply voltage of 24V DC and a convenient screw terminal connection, it offers a straightforward installation process.
The safety relay features an overall width of 45 mm, making it a compact solution for space-constrained environments. It is equipped with relay enabling circuits, including two normally open (NO) contacts for instantaneous actions and two NO contacts for delayed actions, adjustable between 0.5 to 30 seconds. Additionally, it includes one normally closed (NC) contact for monitored start functions.
This device is capable of achieving a Safety Integrity Level (SIL) of 3/2 and a Performance Level (PL) of e/d, according to the relevant international safety standards. It is designed for single-channel and two-channel wiring, enhancing its versatility for various safety applications. The relay also boasts a cross-circuit-proof feature, ensuring additional safety in the event of wiring errors.
With an IP20 protection class for both the enclosure and terminal, the 3TK2827-1BB40 is safeguarded against solid objects and offers finger-safe protection against electrical shock. It is suitable for use in a wide range of ambient temperatures, from -25 to +60°C, and can withstand vibrations and shocks, ensuring reliable operation in demanding industrial settings.
The Siemens 3TK2827-1BB40 is a dependable choice for those seeking a safety relay that combines compact design with powerful safety features, ensuring both protection and peace of mind in industrial automation systems.
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Frequently Asked Questions
What is the purpose of a safety relay?
A safety relay is designed to provide a high level of safety for machine operators by monitoring safety devices and stopping machinery if an unsafe condition is detected. It is typically used in emergency stop circuits, safety gate monitoring, and light curtain applications.
Can this safety relay be used for emergency stop applications?
Yes, the Siemens Safety Relay is suitable for emergency stop applications, ensuring that machinery is brought to a safe state when an emergency stop is activated.
What are the voltage specifications for this safety relay?
The safety relay operates with a control supply voltage of 24 V DC, making it compatible with many industrial control systems that use this standard voltage level.
What type of terminals does this safety relay have?
This safety relay is equipped with screw terminals, which provide a secure and reliable connection for wiring.
What is the significance of the SIL rating for this relay?
The Safety Integrity Level (SIL) rating indicates the reliability of the safety functions performed by the relay. This relay has a maximum achievable SIL of 3 for certain functions, which represents a high level of reliability and safety.
What is the maximum ambient operating temperature for this relay?
The maximum ambient operating temperature for the relay is 60°C, which allows it to function effectively in a range of industrial environments.
Is this safety relay suitable for use with safety gates?
Yes, it is designed to monitor safety gates among other safety devices, ensuring that machinery remains in a safe state when safety gates are open.
What certifications does this safety relay hold?
The relay holds several certifications, including UL and CSA, which indicate compliance with North American safety standards, as well as TÜV and BG BIA certificates, which are recognised in European markets.
How many safety-related contacts does this relay have?
The relay has two normally open (NO) contacts for safety-related instantaneous actions and two NO contacts for safety-related delayed actions.
Can this relay be used for monitoring pressure-sensitive safety mats?
Yes, it is suitable for monitoring pressure-sensitive safety mats, which are used to detect the presence of persons or objects on the mat and trigger a safety response.
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