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Beckhoff EL1254

EtherCAT Terminal, 4-channel digital input, 24 V DC, 1 µs, timestamp

MPN: EL1254
Category: EL1xxx | Digital input

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What is the Beckhoff EL1254?

The EL1254 digital input terminal acquires the fast binary 24 V control signals from the process level and transmits them, in an electrically isolated form, to the controller. The EtherCAT Terminal has four channels that indicate their signal state via

Specifications

Connection technology	4-wire
Specification	similar to EN 61131-2, type 3, “0”: -3…5 V DC, “1”: 11…30 V DC, typ. 3 mA input current
Number of inputs	4
Nominal voltage	24 V DC (-15%/+20%)
“0” signal voltage	-3…+5 V (similar to EN 61131-2, type 3)
“1” signal voltage	11…30 V (similar to EN 61131-2, type 3)
Input current	typ. 3 mA (similar to EN 61131-2, type 3)
Input filter	typ. 1 µs
Resolution timestamp	1 ns
Precision of timestamp in the terminal	10 ns (+ input delay)
Input delay TON/TOFF	1 µs
Distributed clocks	yes
Distributed clock precision	1 µs
Time resolution signal	1 ns
Current consumption power contacts	typ. 20 mA + load
Current consumption E-bus	typ. 80 mA
Electrical isolation	500 V (E-bus/field potential)
Bit width in the process image	4 x input + 4 x 16 byte timestamp
Configuration	no address or configuration setting
Special features	timestamping, latch last edge
Weight	approx. 55 g
Operating temperature	0…55°C
Storage temperature	-25…+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
Approvals/markings	CE, UL
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	Imax: 10 A
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm

EL1254: frequently asked questions

When can EL1254 be shipped?

EL1254 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up EL1254 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for EL1254 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for EL1254, subject to availability and destination.