Part Number:

EL1918

Manufacturer: Beckhoff
Series: EL EtherCAT Terminal Series
  • Rated 4.7 (6 total ratings)
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The Beckhoff EL1918 is part of the EL EtherCAT Terminal Series and features an 8-channel digital input. It includes eight safe inputs and operates at 24 V DC with a logic type of TwinSAFE, TwinSAFE Logic. This terminal supports up to 128 safe connections and uses the TwinSAFE/Safety over EtherCAT protocol.

Part Number:

EL1918

Manufacturer: Beckhoff
Series: EL EtherCAT Terminal Series
  • Rated 4.7 (6 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
  • Call for Expedited Shipping and Product Condition Options
Free Ground Shipping
Worldwide Delivery
Repair Options Available

The Beckhoff EL1918 is part of the EL EtherCAT Terminal Series and features an 8-channel digital input. It includes eight safe inputs and operates at 24 V DC with a logic type of TwinSAFE, TwinSAFE Logic. This terminal supports up to 128 safe connections and uses the TwinSAFE/Safety over EtherCAT protocol.

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Product Description

In industrial automation systems made especially for safety-critical applications, the Beckhoff EL1918 is a crucial part. This device is an 8-channel digital input terminal for the EL EtherCAT Terminal series. Compatibility with a variety of sensors and actuators is ensured by its operation on a 24 V DC power supply, which is a common voltage in industrial control systems. The "digital" aspect of the input means that it perceives signals as distinct on/off states, which makes it perfect for identifying things like when a limit switch is triggered or an item is present or absent. Integration of the EL1918 with Beckhoff's safety technology, TwinSAFE, is one of its most notable characteristics. TwinSAFE ensures excellent integrity and responsiveness by using the "black channel" approach, which transmits safety-related data on the same EtherCAT network as regular communication data. Internal safety-related logic operations may be carried out by the terminal thanks to its support for TwinSAFE Logic. In crucial circumstances, this feature allows for quicker response times and less strain on the central controller. Because the EL1918 supports up to 128 secure connections, it can manage intricate safety configurations with a large number of sensors and actuators.

Dependability and safety are given top priority in the EL1918's design. The EN ISO 13849-1:2015 safety standard (Cat. 4, PL e) certifies that it satisfies strict performance level and fault tolerance standards. According to this specification, the device is appropriate for uses such as emergency stop systems and hazardous area protection where a high degree of safety is crucial. Additionally, each channel may have a different set of test pulses configured by the terminal. By enabling users to customize the device to certain sensor types and operational needs, this feature improves diagnostic capabilities and guarantees dependable operation. The EL1918's ability to identify and respond to problems within a user-defined period is further enhanced by the "≤ watchdog time (parameterizable)" fault response time specification.

With its small size and low weight (around 50 g), the EL1918 is a good choice for applications that need limited space. The cabinet layout and design are made more flexible by its horizontal installation position. A basic degree of protection for industrial settings is provided by the device's IP20 protection classification, which shields it from solid objects bigger than 12 mm, such as fingers. With compatibility for both 1- and 2-wire connection technologies, the terminal offers versatility in integrating sensors. Wake Industrial provides clients with peace of mind and a guarantee of product quality by offering a one-year warranty on the EL1918.

EL1918 Technical Specifications

Channel Type: 8-channel digital input
Fault Response Time: ≤ watchdog time (parameterizable)
Current Consumption E-bus: typ. 165 mA
Installation Position: horizontal
Safety Standard: EN ISO 13849-1:2015 (Cat. 4, PL e) and EN 61508:2010 (SIL 3)
Weight: approx. 50 g
Protection Rating: IP20
Voltage: 24 V DC
Logic Type: TwinSAFE, TwinSAFE Logic
Inputs: 8 safe inputs
Integrated Logic: functionality similar to the EL6910
Maximum Safe Connections: up to 128 safe connections
Test Pulse Configuration: fine granular configuration of the test pulses of the individual channels
Connection Technology: 1-/2-wire
Protocol: TwinSAFE/Safety over EtherCAT

Frequently Asked Questions about EL1918


Q: What is the Beckhoff EL1918, and what are its main features?

A: The Beckhoff EL1918 is an 8-channel digital input terminal from the EL EtherCAT Terminal series. It operates at 24 V DC and is designed for safety-critical applications, featuring TwinSAFE Logic for integrated safety operations. It supports up to 128 safe connections, adhering to EN ISO 13849-1:2015 safety standards.

Q: How does the EL1918 ensure safety in industrial applications?

A: The EL1918 adheres to strict safety standards such as EN ISO 13849-1:2015 (Cat. 4, PL e) and EN 61508:2010 (SIL 3), ensuring high performance levels and fault tolerance. It employs the TwinSAFE protocol, which transmits safety-related data alongside standard data.

Q: What types of connections does the EL1918 support?

A: The EL1918 supports both 1-wire and 2-wire connection technology, offering flexibility for sensor integration in various industrial setups. This allows users to select the most appropriate connection method based on their specific requirements.

Q: What is the significance of the TwinSAFE protocol?

A: TwinSAFE enables safe data transmission over the EtherCAT network, utilizing a "black channel" principle. This allows the EL1918 to perform safety-related logic operations internally, reducing the load on central controllers and enhancing system responsiveness.

Q: Can the EL1918 be configured for different sensor types?

A: Yes, the EL1918 features a fine granular configuration for test pulses on each channel. This customization allows users to adapt the terminal to various sensor types and operational needs, enhancing diagnostic capabilities and ensuring reliable performance.

Internal Product Review

  • ‘‘The EL1918 provides eight safe digital inputs in a compact form factor. It integrates with Beckhoff's TwinSAFE system for safety-critical applications. The terminal allows for flexible configuration of test pulses for each channel and supports 1- and 2-wire connection technology.’’

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