Product Overview

The Beckhoff EL1814 is a fast digital input EtherCAT terminal. It acquires binary 24V control signals from the process level. This terminal transmits signals in electrically isolated form to the automation unit. The Beckhoff EL1814 features four channels with LED signal indicators. Users trust this terminal for high-speed applications requiring 10µs response time.

Technical Specifications

The EL1814 delivers ultra-fast digital input performance with tool-free wiring. Below are the complete technical details.

General Specifications

• Product Type: EtherCAT Terminal.

• Part Number: EL1814 for precise identification.

• Product Status: Regular delivery.

• Connection Technology: 3-wire sensor connection.

• Number of Inputs: 4 channels.

• Weight: Approx. 60 g for lightweight installation.

• Housing Design: HD (High Density) housing with signal LEDs.

Input Specifications

• Specification: EN 61131-2, type 1/3 compliant.

• Nominal Voltage: 24 V DC (-15%/+20%).

• "0" Signal Voltage: -3 to +5 V (EN 61131-2, type 1/3).

• "1" Signal Voltage: 11 to 30 V (EN 61131-2, type 3).

• Input Current (Typical): 3 mA (EN 61131-2, type 3).

• Input Filter (Typical): 10 µs for ultra-fast response.

• Low Delay: Fast 10 µs input filter.

Sensor Supply and Wiring

• Reference Ground: 0 V power contact for all inputs.

• Power Contacts: Connected through for daisy-chaining.

• Sensor Supply: +24 V and 0 V connection points.

• Applicable Sensors: Inductive or capacitive sensors.

• Tool-Free Wiring: Direct plug-in technique for solid conductors.

• Packing Density: 16 connection points in 12 mm housing.

Isolation and Power Specifications

• Electrical Isolation: 500 V (E-bus/field potential).

• Current Consumption (Power Contacts): Typ. 2 mA + load.

• Current Consumption (E-bus): Typ. 90 mA.

• Distributed Clocks: Not supported.

Housing and Mechanical Data

• Design Form: HD (High Density) housing.

• Material: Polycarbonate for durability.

• Dimensions (W x H x D): 12 mm x 100 mm x 68 mm.

• Installation: 35 mm DIN rail conforming to EN 60715 with lock.

• Side by Side Mounting: Double slot and key connection.

• Marking: Labeling of BZxxx series.

Wiring Specifications

• Solid Conductor (s*): 0.08 to 1.5 mm² (direct plug-in).

• Stranded Wire (st*): 0.25 to 1.5 mm² (spring actuation).

• With Ferrule (f*): 0.14 to 0.75 mm² (spring actuation).

• AWG Solid: AWG 28 to 16.

• AWG Stranded: AWG 22 to 16.

• AWG with Ferrule: AWG 26 to 19.

• Stripping Length: 8 to 9 mm.

• Termination: Spring actuation by screwdriver for stranded wire.

Power Contact Specifications

• Current Load Power Contacts: Imax: 10 A.

Environmental Specifications

• Operating Temperature: -25 to +60°C.

• Storage Temperature: -40 to +85°C.

• Relative Humidity: 95% without condensation.

• Vibration Resistance: Conforms to EN 60068-2-6.

• Shock Resistance: Conforms to EN 60068-2-27.

• EMC Immunity: Conforms to EN 61000-6-2.

• EMC Emission: Conforms to EN 61000-6-4.

• Protection Rating: IP20.

• Installation Position: Variable (see documentation).

Approvals and Markings

• CE: Conforms to European standards.

• UL: Underwriters Laboratories approved.

• ATEX: Approved for hazardous locations.

• Ex Marking: II 3 G Ex nA IIC T4 Gc.

Installation Guide

Follow these steps to install the Beckhoff EL1814 correctly.

1. Power Down the System: Turn off all power to the EtherCAT network.

2. Mount DIN Rail: Ensure 35 mm DIN rail conforms to EN 60715.

3. Attach Terminal: Clip the EL1814 onto the DIN rail until it locks.

4. Connect E-bus: Insert the terminal into an existing EtherCAT terminal block.

5. Side Mounting: Use double slot and key connection for adjacent terminals.

6. Strip Wires: Remove 8 to 9 mm of insulation from each conductor.

7. Insert Solid Wires: Push solid conductors directly into the terminal (tool-free).

8. Insert Stranded Wires: Use a screwdriver for spring actuation.

9. Connect Sensors: Wire up to four 3-wire sensors to the input channels.

10. Use +24V and 0V Points: Connect sensor supply using the available terminals.

11. Verify Ground: Reference ground is the 0V power contact.

12. Apply Power: Turn on the E-bus and field power supplies.

13. Check LEDs: Observe signal state via the four LEDs.

14. Test Speed: Verify 10 µs input filter for fast applications.

Installation Notes

• The terminal requires no address or configuration settings.

• Electrical isolation is 500 V between E-bus and field potential.

• The HD housing packs 16 connection points into 12 mm width.

• Power contacts handle up to 10 A for daisy-chaining.

• Tool-free wiring works for solid conductors only.

Packaging List

This unit ships as a new and original product.

• Beckhoff EL1814 EtherCAT Terminal

• Product data sheet

• Spring actuation screwdriver details

• Anti-static factory packaging bag

Frequently Asked Questions (FAQ)

1. What is the input filter time on the EL1814?
The Beckhoff EL1814 has a typical input filter of 10 µs. This ultra-fast response suits inductive and capacitive sensors.

2. What is the wiring difference between EL1814 and standard terminals?
The EL1814 offers tool-free direct plug-in for solid conductors. Stranded wires still require spring actuation by screwdriver.

3. How many connection points does the EL1814 provide?
The Beckhoff EL1814 features 16 connection points in a 12 mm HD housing. This provides increased packing density for panel space savings.

4. What are the ATEX approvals on this EtherCAT terminal?
The EL1814 carries ATEX II 3 G Ex nA IIC T4 Gc approval. This allows installation in Zone 2 hazardous locations.

5. What is the reference ground for inputs on the EL1814?
The Beckhoff EL1814 uses the 0 V power contact as the reference ground for all inputs. This simplifies wiring for 3-wire sensors.