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- 6AG1138-4CA01-2AA0
- Power Module
- Germany
- 15 × 81 × 52 mm
- 0.035 kg
- Xiamen, China
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Product Overview
The Siemens 6AG1138-4CA01-2AA0 Power Module is a rugged SIPLUS ET 200S PM-E 24 V DC power module designed for distributed automation systems operating in demanding industrial environments. Based on the ET 200S architecture, this module supplies and distributes the required 24 V DC load voltage to electronic modules while providing integrated diagnostic capabilities for improved system reliability. It is designed with conformal coating and supports operation in extended temperature environments.
Unlike CPU modules or communication interfaces, the 6AG1138-4CA01-2AA0 is responsible for stable power distribution within an ET 200S station. It separates load voltage from the internal backplane bus, supplies downstream electronic modules, and monitors power conditions to help maintenance personnel identify wiring or voltage problems before they affect production.
Measuring only 15 × 81 × 52 mm and weighing approximately 0.035 kg, the module occupies minimal installation space while providing dependable power management for modular automation systems.
It is commonly used in manufacturing plants, process industries, water treatment facilities, transportation infrastructure, energy systems, and OEM machinery that utilize Siemens ET 200S distributed I/O platforms.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Siemens |
| Product Family | SIPLUS ET 200S |
| Model | 6AG1138-4CA01-2AA0 |
| Product Type | Power Module |
| Module Type | PM-E 24 V DC |
| Primary Function | Load voltage distribution |
| Rated Load Voltage | 24 V DC |
| Maximum Current Capacity | 10 A |
| Typical Power Loss | 0.1 W |
| Diagnostic Function | Load voltage monitoring |
| Diagnostic LEDs | PWR (Green), SF (Red) |
| Protection | Reverse polarity protection |
| Isolation | Galvanic isolation between load voltage and backplane bus |
| Mounting Method | ET 200S Station / DIN Rail Assembly |
| Dimensions | 15 × 81 × 52 mm |
| Weight | 0.035 kg |
| Operating Temperature | -40°C to +70°C |
| Installation Environment | Industrial Control Cabinet |
| Application | Distributed Industrial Automation |
Function and Working Principle
The 6AG1138-4CA01-2AA0 distributes 24 V DC load voltage to electronic modules installed within an ET 200S station while continuously monitoring the power status.
Typical power flow:
24 V DC Power Supply → Power Module → ET 200S Electronic Modules → Field Devices
During operation the module performs several important tasks:
- Distributes 24 V DC load voltage
- Electrically separates load voltage from the backplane bus
- Supplies downstream I/O electronics
- Detects load voltage failures
- Generates diagnostic information
- Displays operating status through LED indicators
- Supports reliable station power management
- Helps reduce downtime through early fault indication
By managing power distribution locally within the station, the module contributes to improved system stability and easier maintenance.
Role in Industrial Control Systems
Within an ET 200S distributed I/O station, the power module serves as the electrical supply interface for connected electronic modules.
Typical system architecture:
24 V DC Power Supply → 6AG1138-4CA01-2AA0 → Digital / Analog I/O Modules → PLC → Industrial Equipment
The module works together with:
- SIMATIC PLC controllers
- ET 200S interface modules
- Digital input modules
- Digital output modules
- Analog modules
- Communication modules
- Human Machine Interfaces (HMI)
- SCADA systems
- Industrial Ethernet networks
Reliable power distribution is essential for maintaining continuous communication and accurate signal processing throughout the automation system.
Industrial Applications
Manufacturing Automation
The power module supports distributed I/O stations installed on:
- Assembly lines
- Packaging machines
- Conveyor systems
- Robotic work cells
- Automated production equipment
Process Industries
Stable power management is particularly important in:
- Chemical plants
- Petrochemical facilities
- Pharmaceutical production
- Food processing
- Cement manufacturing
Water and Wastewater Treatment
Distributed control cabinets used in pumping stations and treatment facilities rely on dependable power modules to ensure uninterrupted operation.
Energy and Utility Systems
Power generation plants, substations, and industrial utility systems utilize ET 200S stations where reliable module power distribution is critical.
OEM Machine Building
Machine manufacturers use ET 200S power modules to build compact, scalable, and maintainable distributed automation systems.
Installation and System Integration
Correct installation helps maximize long-term operational reliability.
Before installation, engineers should verify:
- ET 200S station compatibility
- Correct 24 V DC power supply
- Power wiring
- Backplane configuration
- Module addressing
- Cabinet grounding
- Environmental conditions
- Connector integrity
- Electrical protection
- Overall system configuration
Typical Installation Procedure
- Disconnect system power.
- Verify ET 200S station configuration.
- Install the power module on the station.
- Connect the 24 V DC load voltage.
- Verify wiring polarity.
- Secure all electrical connections.
- Restore system power.
- Confirm PWR LED status.
- Verify diagnostic indicators.
- Test connected electronic modules.
- Check system diagnostics.
- Perform functional verification.
- Confirm communication stability.
- Complete commissioning.
- Record installation parameters.
Proper installation minimizes commissioning issues and improves long-term system availability.
Compatible System Components
The Siemens 6AG1138-4CA01-2AA0 is designed for integration with compatible ET 200S automation hardware.
| Component | Function |
|---|---|
| ET 200S Interface Module | Station controller |
| ET 200S Base Module | Mechanical installation |
| 6AG1138-4CA01-2AA0 | Power distribution |
| Digital Input Modules | Signal acquisition |
| Digital Output Modules | Output control |
| Analog Input Modules | Process measurement |
| Analog Output Modules | Analog process control |
| Communication Modules | Industrial networking |
| SIMATIC PLC | Central controller |
| HMI Panel | Operator interface |
| Engineering Station | Configuration and diagnostics |
| Industrial Power Supply | 24 V DC source |
Recommended Alternative Models
| Model | Product Type | Key Feature | Typical Application |
|---|---|---|---|
| 6AG1138-4CA01-2AA0 | Power Module | 24 V DC power distribution with diagnostics | ET 200S Systems |
| 6AG1136-6PA00-2BC0 | Power Module | Compact power management | Distributed Automation |
| 6AG1137-6BD00-2BA0 | Communication Module | Industrial communication interface | ET 200SP Networks |
| 6AG1137-6AA01-7BA0 | Communication Module | Distributed communication | Process Automation |
| 6AG1136-6DC00-2CA0 | Digital Output Module | Digital output expansion | Machine Control |
| 6AG1136-6RA00-2BF0 | Relay Output Module | Relay switching outputs | Industrial Equipment |
| ET 200S Interface Modules | Interface Module | Station communication | Distributed I/O |
| SIPLUS ET 200S I/O Modules | I/O Modules | Flexible system expansion | Industrial Automation |
When selecting replacement modules, engineers should evaluate station configuration, electrical load requirements, communication architecture, environmental conditions, controller compatibility, and future expansion requirements.
Key Advantages
- Designed for Siemens SIPLUS ET 200S distributed automation systems
- Reliable 24 V DC load voltage distribution
- Integrated power diagnostics
- Reverse polarity protection
- Galvanic isolation between load voltage and backplane bus
- Supports harsh industrial environments
- Compact and lightweight design
- Easy modular installation
- Improves overall system reliability
- Simplifies troubleshooting through diagnostic LEDs
- Supports scalable ET 200S stations
- Suitable for continuous industrial operation
- Dimensions 15 × 81 × 52 mm
- Approximate weight 0.035 kg
Technical FAQs
What is the Siemens 6AG1138-4CA01-2AA0?
The 6AG1138-4CA01-2AA0 is a SIPLUS ET 200S PM-E 24 V DC power module designed for supplying load voltage to ET 200S electronic modules.
What is its primary function?
Its primary function is to distribute 24 V DC load voltage while monitoring power status and providing diagnostic information.
Does the module include diagnostic functions?
Yes. It provides diagnostic monitoring for load voltage and includes PWR and SF LED indicators for operating status and fault indication.
What are the module dimensions?
The module measures 15 × 81 × 52 mm.
What is the approximate weight?
The approximate weight is 0.035 kg.
Which Siemens platform is compatible with this module?
It is designed for compatible SIPLUS ET 200S distributed I/O systems.
Which components typically operate together with this module?
Interface modules, digital I/O modules, analog modules, communication modules, SIMATIC PLCs, engineering stations, HMI panels, and industrial 24 V DC power supplies.
What operating voltage does the module use?
The module is designed for a 24 V DC load voltage supply.
Is the module suitable for harsh environments?
Yes. The SIPLUS version includes conformal coating and is intended for demanding industrial operating conditions.
Where is this module commonly used?
It is widely used in manufacturing automation, process control, energy facilities, water treatment plants, transportation systems, and OEM industrial machinery.
Conclusion
The Siemens 6AG1138-4CA01-2AA0 Power Module provides reliable 24 V DC power distribution for SIPLUS ET 200S distributed automation systems. By supplying stable load voltage, isolating the backplane bus, and offering integrated diagnostics, it helps improve the reliability and maintainability of industrial control systems.
With compact dimensions of 15 × 81 × 52 mm and a lightweight design of approximately 0.035 kg, the module is well suited for space-constrained control cabinets while supporting dependable long-term operation. When integrated with compatible ET 200S interface modules, PLCs, and distributed I/O devices, the 6AG1138-4CA01-2AA0 delivers stable power management for a wide range of industrial automation applications.