Siemens 6DR2004-1A SIPART DR20 regulator

6DR2004-1A is a 6DR2004-1A SIPART DR20 regulator with the documented system role.

System function

Rebuilt from individual evidence

Evidence and limits

6DR2004-1A is identified as 6DR2004-1A SIPART DR20 regulator.

Regulates a process using the SIPART DR20 unit's documented analog and digital I/O. Sits between process signals and the controlled actuator as a regulator.

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

Exact reference: 6DR2004-1A
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: Regulates a process using the SIPART DR20 unit's documented analog and digital I/O.
System position: Sits between process signals and the controlled actuator as a regulator.
Upstream / inputs: Process signals provide the upstream analog and digital inputs.
Downstream / outputs: The controlled actuator receives the downstream regulation result.
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 6DR2004-1A as 6DR2004-1A SIPART DR20 regulator.
Confidence: high
- adegis.com — retrieved 2026-09-12; high confidence
Regulates a process using the SIPART DR20 unit's documented analog and digital I/O.
Confidence: medium
- adegis.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: Sits between process signals and the controlled actuator as a regulator.
Confidence: medium
Rationale: The exact-reference source documents the product function and its system context; the placement is an explicit system inference.
- adegis.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 6DR2004-1A to a downstream system element. — The documented role places 6DR2004-1A between the upstream and downstream system elements.

View Mermaid source

flowchart LR
  upstream["Upstream system"] --> product["6DR2004-1A"]
  product --> downstream["Downstream system"]

View diagram labels

Nodes: Upstream system; 6DR2004-1A; Downstream system
Edges: Documented signal or power path; Inferred system placement

Next action

The captured exact-reference sources support a bounded system role for 6DR2004-1A.

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