Beckhoff EL1808 EtherCAT Terminal

The Beckhoff EL1808 is an 8-channel digital input EtherCAT Terminal designed for efficient signal acquisition in compact industrial automation systems. It supports 24 V DC binary signals using a 2-wire connection and features a high-density 12 mm housing. Each channel includes a status LED, and the terminal provides reliable signal debouncing with a 3 ms input filter, conforming to EN 61131-2 type 1/3 input specifications.

With tool-free direct plug-in wiring for solid conductors and integrated power contact through-connection, the EL1808 offers optimal convenience and space-saving installation for modern control cabinets.

Technical Specifications

Manufacturer: Beckhoff
Part Number: EL1808 Beckhoff
Product Type: Digital Input Terminal
Number of Inputs: 8
Connection Technology: 2-wire
Nominal Voltage: 24 V DC (-15%/+20%)
Input Filter Time: Typ. 3.0 ms
Signal Specification:
– Type 1/3 (EN 61131-2)
– “0” Signal Voltage: -3…+5 V
– “1” Signal Voltage: 11…30 V
Input Current: Typ. 3 mA

Electrical & Power

Power Contacts Consumption: Typ. 2 mA + load
E-bus Current Consumption: Typ. 100 mA
Electrical Isolation: 500 V (E-bus/field potential)
Protect. Rating / Installation Pos.: IP20 / Variable

Mechanical Specifications

Dimensions (W x H x D): 12 mm x 100 mm x 68 mm
Housing Type: EL-12-16pin (HD housing with signal LEDs)
Material: Polycarbonate
Mounting: 35 mm DIN rail (EN 60715)
Side-by-Side Mounting: Double slot and key system
Wiring:
– Solid: 0.08–1.5 mm² (direct plug-in)
– Stranded: 0.25–1.5 mm² (spring-actuated)
– Ferrule: 0.14–0.75 mm²
AWG Range:
– Solid: AWG28–16
– Stranded: AWG22–16
– Ferrule: AWG26–19
Stripping Length: 8–9 mm
Max Current Load (Power Contacts): 10 A

Environmental Conditions

Operating Temperature: -25°C to +60°C
Storage Temperature: -40°C to +85°C
Relative Humidity: 95% (non-condensing)
Vibration/Shock Resistance: EN 60068-2-6 / EN 60068-2-27

Approvals & Compliance

Certifications: CE, UL, CCC, ATEX, IECEx, DNV GL
ATEX Marking: II 3 G Ex ec IIC T4 Gc
IECEx Marking: Ex ec IIC T4 Gc

Key Features

✅ 8 Inputs in Compact Design: Fits in a 12 mm housing with 16 connection points.

✅ Reliable Signal Acquisition: 3 ms debounce filter eliminates switch bounce.

✅ Tool-Free Wiring: Direct plug-in connection for solid wires.

✅ Flexible Integration: Electrically isolated E-bus transmission.

✅ Meets EN 61131-2 Standards: Input specification type 1/3 for compatibility.

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Ideal for space-constrained automation cabinets requiring robust digital input functionality, the EL1808 supports high-density installation, status monitoring, and tool-free wiring.

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