Siemens 6DR4004-6J Ex position-feedback module

6DR4004-6J is a 6DR4004-6J Ex position-feedback module with the documented system role.

System function

Rebuilt from individual evidence

Evidence and limits

6DR4004-6J is identified as 6DR4004-6J Ex position-feedback module.

Transmits two-wire 4-20 mA position feedback from an Ex positioner. Sits within the positioner feedback loop between the positioner and control system.

Unknown: installation-specific compatibility, physical condition, and current commercial availability.

Exact reference: 6DR4004-6J
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: Transmits two-wire 4-20 mA position feedback from an Ex positioner.
System position: Sits within the positioner feedback loop between the positioner and control system.
Upstream / inputs: The positioner supplies the upstream measured position.
Downstream / outputs: The control system receives the downstream 4-20 mA feedback.
Limitations: Unknown: installation-specific compatibility, physical condition, and current commercial availability.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The captured source identifies 6DR4004-6J as 6DR4004-6J Ex position-feedback module.
Confidence: high
- www.manualslib.com — retrieved 2026-09-12; high confidence
Transmits two-wire 4-20 mA position feedback from an Ex positioner.
Confidence: medium
- www.manualslib.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: Sits within the positioner feedback loop between the positioner and control system.
Confidence: medium
Rationale: The exact-reference source documents the product function and its system context; the placement is an explicit system inference.
- www.manualslib.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installation-specific compatibility, physical condition, and current commercial availability.
Confidence: low
Missing evidence: The captured sources do not establish a particular installation, unit condition, or current commercial availability.

System position diagram

An upstream system connects through 6DR4004-6J to a downstream system element. — The documented role places 6DR4004-6J between the upstream and downstream system elements.

View Mermaid source

flowchart LR
  upstream["Upstream system"] --> product["6DR4004-6J"]
  product --> downstream["Downstream system"]

View diagram labels

Nodes: Upstream system; 6DR4004-6J; Downstream system
Edges: Documented signal or power path; Inferred system placement

Next action

The captured exact-reference sources support a bounded system role for 6DR4004-6J.

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Technical context

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