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Beckhoff EL4022 - 2-channel 4-20 mA analog output terminal

Beckhoff EL4022 - 2-channel 4-20 mA analog output terminal is rebuilt from the exact-reference source and its documented system role.

System role

Rebuilt from individual evidence

Evidence boundary

The Beckhoff product page identifies EL4022 as a two-channel, 4-20 mA, 12-bit analog output EtherCAT Terminal.

Processes and transmits two electrically isolated 4-20 mA output signals. Sits between EtherCAT process data and analog field actuators.

Exact reference
EL4022
Category
PLC / CPU
Evidence checked
2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function
Processes and transmits two electrically isolated 4-20 mA output signals.
System position
Sits between EtherCAT process data and analog field actuators.
Upstream / inputs
Receives output values from the EtherCAT process image.
Downstream / outputs
Transmits two isolated 4-20 mA signals to field devices.
Limitations
Unknown: Installation condition, firmware compatibility, and application sizing are not established by this source.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

  • The Beckhoff product page identifies EL4022 as a two-channel, 4-20 mA, 12-bit analog output EtherCAT Terminal.

    Confidence: high

  • The source provides a concrete system role: Processes and transmits two electrically isolated 4-20 mA output signals.

    Confidence: high

Inferences

  • In an integrated system, the reference sits between ethercat process data and analog field actuators.

    Confidence: medium

    Rationale: The source identifies the exact reference and its component role; the stated system position follows from that role.

Unknowns

  • Unknown: Installation condition, firmware compatibility, and application sizing are not established by this source.

    Confidence: low

    Missing evidence: A current manufacturer datasheet, installation record, and application sizing review are required.

System position diagram

Diagram showing EL4022 between upstream and downstream system elements.

Reading limit: system position only, not a wiring or safety drawing.

System position of EL4022

Enlarged system diagram

Diagram showing EL4022 between upstream and downstream system elements.

System position of EL4022

View Mermaid source
flowchart LR
  A[Upstream system] --> B[EL4022]
  B --> C[Downstream system]
View diagram labels
Nodes
Upstream system; EL4022; Downstream system
Edges
System data or power path

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