The EL1809 is a high-density EtherCAT Terminal from Beckhoff, designed to acquire 16 digital input signals (24 V DC) in a compact form factor. By utilizing 1-wire connection technology, this terminal streamlines cabinet wiring for high-density applications. It is compliant with the EN 61131-2 Type 1/3 specification, ensuring reliable signal detection for both standard and high-impedance sensors. The terminal features an integrated input filter (3.0 ms) to suppress signal noise, making it an ideal choice for monitoring slow digital signals in complex automation systems.
Features
High Density: 16 digital inputs in a 12 mm wide housing.
1-Wire Technology: Direct plug-in technique significantly reduces wiring time.
Safety & Compliance: Fully compliant with CE, UL, ATEX, and IECEx standards for hazardous locations.
Reliability: Galvanic isolation between the E-bus and field potential (500 V).
Easy Maintenance: Signal LEDs provide quick visual status diagnostics for all 16 channels.
Technical Specifications
Feature
Specification
Manufacturer
Beckhoff
Model
EL1809
Number of Inputs
16
Voltage
24 V DC (-15% / +20%)
Input Type
EN 61131-2, Type 1/3
Input Filter
typ. 3.0 ms
Housing
HD (High Density), Polycarbonate
Dimensions (WxHxD)
12 mm x 100 mm x 68 mm
Protection Rating
IP20
Operating Temp
-25 °C to +60 °C
Installation Guidelines
Mounting: The EL1809 clips directly onto a standard 35 mm DIN rail (EN 60715). Multiple terminals can be mounted side-by-side using the double slot and key connection system.
Wiring: Supports solid and flexible conductors (0.08–1.5 mm²). Use a flat-head screwdriver to actuate the spring-loaded terminals.
Stripping: Strip wires to 8–9 mm for optimal contact within the terminal block.
Power Contacts: Note that the maximum current load for power contacts is 10 A. Ensure your power supply distribution adheres to this limit when cascading multiple terminal
FAQ
How many inputs does the EL1809 support?
The EL1809 supports 16 digital inputs.
What is the primary benefit of the 1-wire connection technology?
It significantly reduces wiring complexity and space requirements in the control cabinet by allowing high-density signal termination.
What is the typical input filter time?
The typical input filter time is 3.0 ms, which helps in suppressing noise and filtering out signal bounces.
Does this terminal have hazardous location approvals?
Yes, it carries ATEX and IECEx approvals for use in specific hazardous areas (II 3 G Ex ec IIC T4 Gc).
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