Siemens 6SL3040-0LA00-0AA1 SINAMICS S120 CU310 control unit with a second temperature channel for industrial drive integration.

Documented function and system position for 6SL3040-0LA00-0AA1.

Documented system function

Rebuilt from individual evidence

6SL3040-0LA00-0AA1 is documented as SINAMICS S120 CU310 control unit with a second temperature channel.

Within the SINAMICS system, it controls a SINAMICS drive axis and processes configured motor-temperature signals.

Exact reference: 6SL3040-0LA00-0AA1
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: The component controls a SINAMICS drive axis and processes configured motor-temperature signals.
System position: It sits between the drive power section, feedback wiring, and the higher-level control system.
Upstream / inputs: It receives drive commands and configured temperature-sensor signals.
Downstream / outputs: It sends control decisions to the drive power section and reports status upstream.
Limitations: Unknown: installed wiring, configuration, firmware compatibility, and current unit condition.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

SINAMICS S120 CU310 control unit with a second temperature channel
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
Siemens documentation states that this CU310 variant has a second temperature channel that can be used alone or with the first channel after parameterization.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

In a deployed SINAMICS system, the component controls a SINAMICS drive axis and processes configured motor-temperature signals.
Confidence: medium
Rationale: The exact-reference product identity and documented characteristics place this component at the stated system boundary.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installed wiring, configuration, firmware compatibility, and current unit condition.
Confidence: low
Missing evidence: An installed-system inspection and compatibility record were not available in the individual lookup.

System position diagram

Upstream drive system connected through 6SL3040-0LA00-0AA1 to downstream drive system. — 6SL3040-0LA00-0AA1 is positioned within the documented SINAMICS drive path.

View Mermaid source

flowchart LR
  upstream[Upstream drive system] --> device[6SL3040-0LA00-0AA1]
  device --> downstream[Downstream drive system]

View diagram labels

Nodes: Upstream drive system; 6SL3040-0LA00-0AA1 device; Downstream drive system
Edges: Drive data enters the component; Component serves the downstream system

Next action

Use 6SL3040-0LA00-0AA1 only when the documented interfaces and system requirements match the installation.

Verify the installed interfaces, configuration, and firmware against the cited source before integration.

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