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Beckhoff · EtherCAT Terminal
EL1904 is a Beckhoff industrial component with Supply voltage 24 V DC (IEC 61131-2); Enclosure rating IP20 (IEC 60529); Operating temperature 0...+55 °C (IEC 60068-2-1). It is used in control panels, machine builds, spare-part replacements where the installed unit is matched to the original catalog number and a compact, documented part is required.
| Electrical | |
| Tripping characteristic | 8…9 mm |
|---|---|
| Supply voltage | 24 V DC (IEC 61131-2) |
| I/O and communication | |
| Bus interface | TwinSAFE/Safety over EtherCAT |
| Communication ports | EtherCAT, Ethernet |
| Response time | typ. 4 ms (read input/write to E-bus) |
| Mechanical | |
| Dimensions (H x W x D) | 12 mm x 100 mm x 68 mm |
| Weight | approx. 50 g |
| Mounting | 35 mm DIN rail (IEC 60715) |
| Enclosure rating | IP20 (IEC 60529) |
| Environment and compliance | |
| Operating temperature | 0...+55 °C (IEC 60068-2-1) |
| Certifications | CE, UL, cULus |
Values follow the Beckhoff EtherCAT Terminal specification for this catalog number; parameters not confirmed for this variant are omitted rather than estimated.
| Beckhoff EtherCAT Terminal variants | |||
| Catalog number | Mounting | ||
|---|---|---|---|
| EL1904 (this page) | 35 mm DIN rail (IEC 60715) | ||
| EL1918 | 35 mm DIN rail (IEC 60715) | ||
| EL1918-2200 | DIN rail / panel | ||
| EL1002 | DIN rail / panel | ||
Before selecting an alternative, confirm its dimensions, terminals and installation requirements in the manufacturer documentation.
The EL1904 is the device-level element in a Beckhoff industrial component installation. It receives the field signals and control supply listed above — 24 V DC (IEC 61131-2) — and switches or conditions the load within the the rated ratings shown in the Specifications table. Wiring and protective devices are sized to those same numbers, not to a generic assumption.
Typical installations place it in control panels, machine builds, spare-part replacements, where the unit is matched to the original catalog number and the enclosure provides 35 mm DIN rail (IEC 60715) support. Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Beckhoff EL1904 — Industrial automation component supplied as a like-for-like replacement, selected by catalog number and published ratings. The figures below are taken from the specification table on this page for catalog number EL1904; always cross-check the catalog number and hardware revision on the nameplate before placing an order.
For a discontinued unit, match function and electrical ratings rather than the label alone.
Q.Before ordering EL1904, which enclosure rating entry should be checked?
The enclosure rating entry quoted above is IP20 (IEC 60529). Compare it with the nameplate of the installed unit before ordering.
Q.Where can I find the operating temperature data for EL1904?
It is listed in the specification table for Beckhoff EL1904 as 0...+55 °C (IEC 60068-2-1). Confirm this figure against the unit currently in the panel.
Q.For EL1904, what does the specification table state about dimensions (H x W x D)?
The specification table lists dimensions (H x W x D) = 12 mm x 100 mm x 68 mm for Beckhoff EL1904. Use the value as the reference when sourcing a current-production equivalent.
Q.How do I confirm compatibility of EL1904 before ordering?
Match the catalog number EL1904 and the specification values listed above against the installed unit, then confirm the firmware or hardware revision where a revision-sensitive part is involved.
Q.What should I include in an enquiry for EL1904?
Send the full catalog number EL1904, the required quantity and a photo of the nameplate. Stock, lead time and the applicable compliance documents can then be confirmed for Beckhoff EL1904.
Standard (US & Canada, tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders under $500.00; free on orders of $500.00 and above.
Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.
Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Shipping charges and available services are displayed at checkout. See the Shipping Policy for details.
Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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