Siemens 6SN1122-0BA11-0AA1 SIMODRIVE 611-A induction-motor control unit

The Siemens datasheet identifies 6SN1122-0BA11-0AA1 as a SIMODRIVE 611-A plug-in closed-loop control unit for induction motor drives in the universal version.

Documented product role

Rebuilt from individual evidence

The Siemens datasheet identifies 6SN1122-0BA11-0AA1 as a SIMODRIVE 611-A plug-in closed-loop control unit for induction motor drives in the universal version.

The board processes the induction-motor drive control loop in the SIMODRIVE 611-A system, subject to the documented firmware requirement from version 3.00.

Unknown: installation-specific compatibility, firmware, wiring, and unit condition require separate verification.

Exact reference: 6SN1122-0BA11-0AA1
Category: Drives / VFD
Evidence checked: 2026-09-12

System role

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

Function: Controls the induction-motor drive loop in a SIMODRIVE 611-A universal system.
System position: Sits as a plug-in control stage between the SIMODRIVE 611-A control path and the induction-motor drive power section.
Upstream / inputs: Receives analog setpoint commands and system feedback from the SIMODRIVE 611-A control path.
Downstream / outputs: Regulates the connected induction-motor drive through the SIMODRIVE 611-A power section.
Limitations: Unknown: installation-specific compatibility, firmware, wiring, and unit condition require separate verification.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The Siemens datasheet identifies 6SN1122-0BA11-0AA1 as a SIMODRIVE 611-A plug-in closed-loop control unit for induction motor drives in the universal version.
Confidence: high
- cache.industry.siemens.com — retrieved 2026-09-12; high confidence
- assets.euautomation.com — retrieved 2026-09-12; high confidence
The Siemens startup guide states that 6SN1122-0BA11-0AA1 requires firmware from version 3.00.
Confidence: high
- cache.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

The board processes the induction-motor drive control loop in the SIMODRIVE 611-A system, subject to the documented firmware requirement from version 3.00.
Confidence: medium
Rationale: The system position follows from the exact reference description and the documented interfaces or drive-system context.
- cache.industry.siemens.com — retrieved 2026-09-12; high confidence
- assets.euautomation.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installation-specific compatibility, firmware, wiring, and unit condition require separate verification.
Confidence: low
Missing evidence: The individual lookup does not establish the installed topology, firmware state, wiring, or physical unit condition.

System position diagram

A flow from the upstream system through 6SN1122-0BA11-0AA1 to the downstream system. — The diagram places 6SN1122-0BA11-0AA1 in the documented industrial control path.

View Mermaid source

flowchart LR
  upstream["Upstream system"] --> product["6SN1122-0BA11-0AA1"]
  product --> downstream["Downstream system"]

View diagram labels

Nodes: Upstream system; 6SN1122-0BA11-0AA1 SIMODRIVE 611-A induction-motor control unit; Downstream system
Edges: Documented control path; Inferred system position

Next action

Use this reference when the installed SIMODRIVE 611-A system requires the documented universal induction-motor control unit.

Confirm the complete order code, installed system, wiring, and firmware before replacement or commissioning.

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