Siemens 6ES7138-7EA01-0AA0 SIMATIC power supply module for a distributed I/O station

6ES7138-7EA01-0AA0 is a SIMATIC power supply module for a distributed I/O station; its documented system role is to supply 24 V DC power to the distributed I/O station in the documented hazardous-area system.

System function

Rebuilt from individual evidence

System position

Evidence and limits

6ES7138-7EA01-0AA0 is a SIMATIC power supply module for a distributed I/O station.

In the documented system path, its role is to supply 24 V DC power to the distributed I/O station in the documented hazardous-area system.

The source evidence supports the product identity and system role; installation-specific limits remain explicit unknowns.

Exact reference: 6ES7138-7EA01-0AA0
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: Supplies 24 V DC power to the distributed I/O station in the documented hazardous-area system.
System position: Sits in the distributed I/O station power path between the 24 V DC source and the distributed station electronics.
Upstream / inputs: The 24 V DC source supplies the module's input power.
Downstream / outputs: The distributed I/O station receives its documented 24 V DC supply.
Limitations: Unknown: Installation-specific compatibility, firmware, replacement suitability, and current commercial availability for 6ES7138-7EA01-0AA0 were not established by this individual research.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The source identifies 6ES7138-7EA01-0AA0 as a SIMATIC power supply module for an ET 200iSP station.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence
Supplies 24 V DC power to the ET 200iSP station in the documented hazardous-area system.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: Sits in the ET 200iSP power path between the 24 V DC source and the distributed station electronics.
Confidence: medium
Rationale: The exact product description and documented function place this module in the stated signal path.
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: Installation-specific compatibility, firmware, replacement suitability, and current commercial availability for 6ES7138-7EA01-0AA0 were not established by this individual research.
Confidence: low
Missing evidence: No installation-specific controller, firmware, replacement, or current commercial evidence was captured.

System position diagram

A left-to-right system path shows 24 V DC source connected through 6ES7138-7EA01-0AA0 to distributed I/O station. — System role inferred from the exact-reference evidence: 6ES7138-7EA01-0AA0 sits in the documented path between 24 V DC source and distributed I/O station.

View Mermaid source

flowchart LR upstream["24 V DC source"] -->|configured signals| product["6ES7138-7EA01-0AA0"] product -->|documented function| downstream["distributed I/O station"]

View diagram labels

Nodes: 24 V DC source; 6ES7138-7EA01-0AA0 SIMATIC power supply module for a distributed I/O station; distributed I/O station
Edges: configured signals; documented function

Next action

The captured evidence supports a concrete system role for 6ES7138-7EA01-0AA0; installation-specific limits remain explicit unknowns.

Verify the complete 6ES7138-7EA01-0AA0 identity, installed interfaces, and project configuration before replacement or commissioning.

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