Evidence-backed product details

Rebuilt from individual evidence

The exact reference is identified as a SIMODRIVE 611 Universal HR control unit.

The fetched technical page describes a two-axis closed-loop control system for CNC applications with speed/torque control and positioning functionality, with resolver support and optional expansion.

Siemens marks the exact article Product Discontinued.

The unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage, using feedback to regulate the connected servo or spindle axes.

Exact reference: 6SN1118-1NK01-0AA0
Category: Drives / VFD
Evidence checked: 2026-09-13

System role

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

Function: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.
System position: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.
Upstream / inputs: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.
Downstream / outputs: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.
Limitations: Unknown: Exact firmware/options, supported motor families, electrical ratings, and replacement compatibility.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The exact reference is identified as a SIMODRIVE 611 Universal HR control unit.
Confidence: medium
- sieportal.siemens.com — retrieved 2026-09-13; high confidence
- iqelectro.com — retrieved 2026-09-13; medium confidence
The fetched technical page describes a two-axis closed-loop control system for CNC applications with speed/torque control and positioning functionality, with resolver support and optional expansion.
Confidence: medium
- sieportal.siemens.com — retrieved 2026-09-13; high confidence
- iqelectro.com — retrieved 2026-09-13; medium confidence
Siemens marks the exact article Product Discontinued.
Confidence: medium
- sieportal.siemens.com — retrieved 2026-09-13; high confidence
- iqelectro.com — retrieved 2026-09-13; medium confidence

Inferences

The unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage, using feedback to regulate the connected servo or spindle axes.
Confidence: medium
Rationale: The statement is explicitly marked as an inference from the cited exact-reference evidence.
- sieportal.siemens.com — retrieved 2026-09-13; high confidence
- iqelectro.com — retrieved 2026-09-13; medium confidence

Unknowns

Unknown: Exact firmware/options, supported motor families, electrical ratings, and replacement compatibility.
Confidence: low
Missing evidence: Exact firmware/options, supported motor families, electrical ratings, and replacement compatibility.

System position diagram

6SN1118-1NK01-0AA0: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function. — This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.

View Mermaid source

flowchart LR
  role["This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function."] --> product["6SN1118-1NK01-0AA0"]

View diagram labels

Nodes: This two-axis closed-loop control unit sits in the CNC motion-control layer between the CNC controller and the SIMODRIVE power stage. It uses feedback to regulate connected servo or spindle axes and supports the documented positioning function.; 6SN1118-1NK01-0AA0
Edges: Evidence-backed system role

Next action

The exact reference is identified as a SIMODRIVE 611 Universal HR control unit.

Unknown: Exact firmware/options, supported motor families, electrical ratings, and replacement compatibility.

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6SN1118-1NK01-0AA0