Name: Beckhoff EL1814 Digital Input | 24V DC EtherCAT Terminal 4CH
SKU: EL1814
Price: 234.00 USD
Availability: InStock

Product details

EL1814 | EtherCAT Terminal, 4-Channel Digital Input

Beckhoff – EL1814 is a 4-channel digital input terminal for 24 V DC signals. It reads binary control signals from the field. The data is sent to the controller with electrical isolation. Its 10 µs filter ensures fast response. The 3-wire connection supports sensors with supply.

Key Features

4 digital inputs – 24 V DC, 3-wire
Ultra-fast 10 µs filter – low delay for precise control
Type 1/3 compliant – works with most industrial sensors
Tool-free wiring – direct plug-in for solid wires
High-density HD housing – 12 mm width saves panel space
LED status indicators – per channel for easy diagnostics

Technical Specifications

Brand: Beckhoff
Model: EL1814
Series: EtherCAT Terminal
Type: 4-channel digital input
Connection: 3-wire (24 V, 0 V, signal)
Nominal voltage: 24 V DC (-15 % / +20 %)
Signal “0”: -3…+5 V
Signal “1”: 11…30 V
Input current: typ. 3 mA
Input filter: typ. 10 µs
Power supply: via E-bus (90 mA) + power contacts (2 mA + load)
Electrical isolation: 500 V (E-bus / field)
Operating temperature: -25…+60 °C
Storage temperature: -40…+85 °C
Humidity: 95 % non-condensing
Protection: IP20

Installation & Wiring

Mounting: 35 mm DIN rail (EN 60715) with lock
Side by side: double slot and key connection
Wiring: spring actuation, no tool for solid wires
Cross-section (solid): 0.08…1.5 mm² (AWG 28…16)
Cross-section (stranded): 0.25…1.5 mm² (AWG 22…16)
Ferrule: 0.14…0.75 mm² (AWG 26…19)
Stripping length: 8…9 mm
Power contact current: max. 10 A

Certifications

CE, UL, ATEX
ATEX marking: II 3 G Ex nA IIC T4 Gc
Complies with EN 61131-2 (type 1/3)

Package & Warranty

EL1814 terminal (1 unit)
Quick-start guide
Warranty: 12 months against defects
Shipping: 12–24 h dispatch via FedEx, UPS, or DHL

Expert Review

The EL1814 excels in speed and simplicity. Its 10 µs filter handles fast sensors like encoders or proximity switches. The 3-wire connection includes sensor supply, reducing external wiring. The HD design saves space. For basic digital input tasks, this is a reliable and cost-effective choice.

Manager’s Insight

This terminal simplifies inventory. One model covers type 1 and type 3 sensors. The tool-free wiring cuts installation time. With ATEX approval, it fits global sites. The 12-24h shipping supports urgent machine builds. A smart investment for control cabinets.

Typical Applications

Industrial robots – limit switches, emergency stops
Packaging machines – position sensors, light barriers
Conveyor systems – presence detection
PLC systems – any 24 V digital signal
EtherCAT networks – fast I/O scanning

Comparison with Other Models

EL1809 – 8-channel digital input, similar speed, larger footprint
EL2809 – 8-channel digital output, opposite function
EL1004 – 4-channel input, slower filter (3 ms), lower cost

FAQ – Frequently Asked Questions

What sensors work with the EL1814?
It supports inductive, capacitive, and mechanical switches. The 3-wire connection provides power for sensors.
Is the EL1814 suitable for high-speed counting?
No. The 10 µs filter is fast for standard digital signals. For counting, use a dedicated counter terminal.
Can I use 2-wire sensors?
Yes, but you need to connect the sensor supply separately. The terminal is designed for 3-wire, but 2-wire works with external power.
How do I know the input state?
Each channel has a green LED. It lights when the input is active (signal “1”).
What is the maximum cable length?
Keep cables under 30 m for reliable signals. Shorter is better for fast switching.

Experience-based Tips

Use shielded cables near inverters or high-power drives.
Check the power contact current – do not exceed 10 A total.
For long cables, use a 24 V supply with enough current.
Test the input filter with your sensor. The 10 µs works for most, but very noisy signals may need external filtering.