EL1809

Product information

Product Overview

The EL1809 puts 16 digital inputs for 24 V DC into the same 12 mm wide housing as an 8-channel terminal. It keeps the 3 ms input filter of the EL1008 and adds direct plug-in technology, so a control cabinet full of switch signals occupies half the rail.

It is the terminal for dense, slow, mechanically switched I/O: pushbutton clusters, valve feedback, terminal strips of limit switches, machine mode selectors.

Why Buyers Specify This Model

Twice the channels in the same rail width — that is the whole point

The EL1809 measures 12 × 100 × 68 mm, identical to the 8-channel EL1008, but carries 16 channels. For a machine with a large number of slow switch signals, that halves the rail length and halves the number of terminals to wire.

Weight is approximately 65 g. Beckhoff describes it as a “standard terminal with a high number of channels for slow 24 V DC edges, direct plug-in technology”.

Direct plug-in technology and what it means in the cabinet

Direct plug-in refers to the connection concept: the conductor is pushed in rather than screwed, which speeds up wiring and removes the risk of a loose screw terminal after a few years of vibration. The connection cross-sections are the standard Beckhoff range for this housing — 0.08 … 2.5 mm² solid or stranded, 0.14 … 1.5 mm² with ferrules.

Marking uses the BZxxxx label series, which matters on a 16-channel terminal: label the channels properly at commissioning, because tracing a single signal across 16 without labels is slow work later.

Signal levels and load

Logic 0 is -3 … +5 V and logic 1 is 11 … 30 V; the typical input current is 3 mA. Note that Beckhoff publishes the “0” level per EN 61131-2 type 1/3 and the “1” level per type 3 — which is why the two figures are quoted with slightly different references.

The terminal draws typically 100 mA from the E-bus and 4 mA plus load from the power contacts. Protection rating is IP20 and the installation position is variable, subject to the documentation.

Technical Specifications (Official Beckhoff Data)

Parameter	Official value
Connection technology	1-wire
Specification	EN 61131-2, type 1/3
Number of inputs	16
Nominal voltage	24 V DC (-15%/+20%)
Signal voltage “0”	-3…+5 V (EN 61131-2, type 1/3)
Signal voltage “1”	11…30 V (EN 61131-2, type 3)
Input current	typ. 3 mA (EN 61131-2, type 3)
Input filter	typ. 3 ms
Distributed clocks	–
Current consumption power contacts	typ. 4 mA + load
Current consumption E-bus	typ. 100 mA
Electrical isolation	500 V (E-bus/field potential)
Configuration	no address or configuration setting
Special features	standard terminal with high number of channels for slow 24 V DC edges, direct plug-in technology
Weight	approx. 65 g
Operating temperature	-25…+60°C
Storage temperature	-40…+85°C
Relative humidity	95%, no condensation
Vibration/shock resistance	conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission	conforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.	IP20/variable (see documentation)
Approvals/markings	CE, CCC, UL, ATEX, IECEx, cFMus
Ex marking	ATEX: / II 3G Ex ec IIC T4 Gc / IECEx: / Ex ec IIC T4 Gc / cFMus: / Class I, Division 2, Groups A, B, C, D / Class I, Zone 2, AEx ec IIC T4 Gc

Specifications are Beckhoff’s official product data for the EL1809. The ES1809 variant is identical but with a pluggable wiring level.

Housing, Installation and Wiring

Data	Official value
Design form	HD (High Density) housing with signal LEDs
Material	polycarbonate
Installation	on 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means of	double slot and key connection
Marking	labeling of the BZxxxx series
Wiring	solid conductors (s): direct plug-in technology; fine-stranded conductors (st) and ferrule (f): spring actuation by screwdriver
Connection cross-section	s*: 0.08…1.5 mm², / st*: 0.25…1.5 mm², / f*: 0.14…0.75 mm²
Connection cross-section AWG	s*: AWG28…16, / st*: AWG22…16, / f*: AWG26…19
Stripping length	8…9 mm
Current load power contacts	I max : 10 A
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm

Material Compliance

The following is Beckhoff’s published material compliance data for this product, reproduced unchanged. Beckhoff notes that absence of a substance is not verified by analytical tests.

Item	Official statement
REACH SVHC	no
POP	compliant
RoHS	compliant with exemption
RoHS exemption	7c-I: Lead-containing electrical and electronic components in glass and ceramic materials, excluding dielectric ceramics in capacitors
China-RoHS	www.beckhoff.com/china-rohs-io
CA Prop65	www.beckhoff.com/prop65

Official Documentation

Every figure in the table above is published by Beckhoff. We reproduce it rather than paraphrase it, so that you can check it against the manufacturer’s own documentation:

• Beckhoff official product page — EL1809 — the source of every specification on this page.
• Beckhoff official documentation for EL1809 — downloadable PDF from Beckhoff’s documentation server.
• Canonical Beckhoff documentation link for EL1809.

Ordering This Part

Tell us the model and, where an order code exists, the complete code — Beckhoff variants differ in ways that matter, as set out above. For discontinued models, a nameplate photograph is the fastest way to confirm exactly what you have.

• Exact model or order code (including any suffix such as -0111 or -ES variants)
• Quantity required
• Whether you need the terminal alone or a complete station with coupler and power supply
• For replacements: a photo of the existing nameplate or the old order code

We confirm availability and condition before quoting. We do not publish stock levels or lead times on this page because they change; ask and we will answer specifically for your requirement.

Frequently Asked Questions

Can I replace two EL1008 modules with one EL1809?

Functionally for slow 24 V DC signals, yes — both have a 3 ms filter and the same signal levels. Check the wiring and labelling though: 16 channels on one terminal means a denser terminal strip, and direct plug-in wiring differs from what your panel builder may be used to.

Does it still have the 3 ms filter?

Yes. It is designed for slow 24 V DC edges from mechanical contacts. It is not a fast input terminal.

How much rail does it save?

The housing is 12 mm wide for 16 channels, the same as the 8-channel EL1008. For a machine with many switch signals, that is roughly half the terminals and half the rail.

How much E-bus current does it draw?

Typically 100 mA, against 90 mA for the 8-channel EL1008. Both are small; the total is what matters against your coupler’s 2000 mA budget.

What is the difference between EL1809 and ES1809?

Only the wiring level — the ES1809 is the pluggable variant. Beckhoff lists both in the ordering information.