EL1008

Product information

Product Overview

The EL1008 is an 8-channel digital input terminal for 24 V DC signals. Each of the eight channels has a 3 ms input filter, which makes it the standard choice for mechanically switched signals — pushbuttons, limit switches, relay contacts, float switches — where contact bounce is expected and fast edges are not wanted.

Channels are 1-wire, referenced to the terminal’s 0 V, and electrically isolated from the E-bus at 500 V. There are no address or configuration settings to make.

Why Buyers Specify This Model

The 3 ms filter is a feature, not a limitation

Beckhoff specifies the EL1008 with a typical input filter of 3 ms and describes it as the standard input terminal for bouncing signals. A mechanical contact does not close cleanly; without filtering, one button press can be read as several edges and the PLC program sees phantom counts.

If your application instead needs to catch very short pulses — a registration mark, a fast sensor edge, a cam — a 3 ms filter will miss them. That is the point at which you move to a fast input terminal or to a timestamp terminal such as the EL1252.

Eight channels in a 12 mm housing

The housing is only 12 mm wide (12 × 100 × 68 mm), so eight inputs occupy very little DIN rail. Weight is approximately 55 g. Where even that is too much rail, the EL1809 packs 16 channels into the same form factor.

Wiring is 1-wire with spring actuation by screwdriver, accepting 0.08 … 2.5 mm² solid or stranded, or 0.14 … 1.5 mm² with ferrules. The current load on the power contacts is 10 A maximum.

Current consumption and the E-bus budget

The EL1008 draws a typical 90 mA from the E-bus and a negligible 2 mA plus load from the power contacts. The E-bus figure is the one to add up when planning a station: an EK1100 coupler supplies 2000 mA in total.

Signal levels follow EN 61131-2: logic 0 is -3 … +5 V, logic 1 is 11 … 30 V, with a typical 3 mA input current. Electrical isolation between E-bus and field potential is 500 V.

Technical Specifications (Official Beckhoff Data)

Parameter	Official value
Connection technology	1-wire
Specification	EN 61131-2, type 1/3
Number of inputs	8
Nominal voltage	24 V DC (-15%/+20%)
Signal voltage “0”	-3…+5 V (EN 61131-2, type 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. 2 mA + load
Current consumption E-bus	typ. 90 mA
Electrical isolation	500 V (E-bus/field potential)
Configuration	no address or configuration setting
Special features	standard input terminal for bouncing signals (filter 3 ms)
Weight	approx. 55 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/see documentation
Pluggable wiring level	for all ESxxxx terminals
Approvals/markings	CE, CCC, UL, ATEX, IECEx, DNV, 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 EL1008. The ES1008 variant is identical but with a pluggable wiring level.

Housing, Installation and Wiring

Data	Official value
Design form	compact terminal 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 conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-section	s*: 0.08…2.5 mm², / st*: 0.08…2.5 mm², / f*: 0.14…1.5 mm²
Connection cross-section AWG	s*: AWG28…14, / st*: AWG28…14, / f*: AWG26…16
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

Ordering Information and Variants

Beckhoff’s own ordering information for this product:

Order code	Official description
EL1008	EtherCAT Terminal, 8-channel digital input, 24 V DC, 3 ms
ES1008	EtherCAT Terminal, 8-channel digital input, 24 V DC, 3 ms, pluggable wiring level

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 — EL1008 — the source of every specification on this page.
• Beckhoff official documentation for EL1008 — downloadable PDF from Beckhoff’s documentation server.
• Canonical Beckhoff documentation link for EL1008.

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

EL1008 or EL1809 — how do I choose?

Channel count against rail width. Both have a 3 ms filter and 1-wire connection. The EL1008 gives 8 channels in a 12 mm housing; the EL1809 gives 16 channels in the same 12 mm housing and uses direct plug-in technology. If rail space is the constraint, take the EL1809.

Why does it have a 3 ms filter?

It is designed for mechanically switched signals where contact bounce would otherwise be read as multiple edges. If you need to detect pulses shorter than about 3 ms, this is the wrong terminal — use a fast input or a timestamp terminal instead.

What is the difference between EL1008 and ES1008?

Only the wiring level. The ES1008 has a pluggable wiring level; the EL1008 is fixed. Beckhoff lists both in the ordering information for this product.

How much E-bus current does it use?

Typically 90 mA. Add that to the other terminals behind your coupler and check the total against the coupler’s 2000 mA E-bus supply.

What approvals does the EL1008 carry?

CE, CCC, UL, ATEX, IECEx, DNV and cFMus, as published by Beckhoff, with ATEX II 3G Ex ec IIC T4 Gc / IECEx Ex ec IIC T4 Gc marking. Protection rating is IP20.