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- Siemens
- 6AG1055-1MD00-7BA2
- Expansion Module
- Germany
- 35.5 x 90 x 58 mm
- 0.13 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6AG1055-1MD00-7BA2 Expansion Module is a compact industrial automation component designed to extend the capabilities of compatible Siemens control systems. Expansion modules are used within modular automation architectures to provide additional system functionality while allowing the primary controller and associated hardware to remain part of an organized and scalable control platform.
Modern PLC installations are rarely limited to a single controller. Depending on the machine or process, a complete automation system can contain a CPU, power supply, input and output modules, communication equipment, expansion hardware, operator interfaces, and field devices. Expansion modules provide an important way to build these systems around actual application requirements.
The Siemens 6AG1055-1MD00-7BA2 has listed dimensions of 35.5 × 90 × 58 mm and a weight of 0.13 kg. Its compact form factor makes it suitable for industrial control cabinets and equipment where efficient use of installation space is important.
The exact electrical characteristics, supported functions, interfaces, channel configuration, system compatibility, and installation requirements should be verified against the specific Siemens automation platform before commissioning or replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6AG1055-1MD00-7BA2 |
| Product Type | Expansion Module |
| Product Family | Siemens Industrial Automation |
| Primary Function | System expansion |
| Application | PLC and industrial automation systems |
| Dimensions | 35.5 × 90 × 58 mm |
| Weight | 0.13 kg |
| Installation | Compatible Siemens control equipment |
| Mounting | Industrial control-system installation |
| Typical Application | Machine and process automation |
The exact I/O characteristics, electrical ratings, communication functions, environmental specifications, and supported controller models should be confirmed against the relevant Siemens hardware configuration.
What Is the Siemens 6AG1055-1MD00-7BA2?
The 6AG1055-1MD00-7BA2 is a Siemens Expansion Module intended for use within a compatible industrial automation architecture.
A PLC controller provides the central processing function of an automation system, but many applications require additional hardware to support the complete machine or process. Modular expansion makes it possible to add system functionality without redesigning the entire control architecture.
The 6AG1055-1MD00-7BA2 can therefore be considered a supporting component within a larger Siemens control system.
A simplified architecture can be represented as:
PLC Controller → Expansion Interface → 6AG1055-1MD00-7BA2 → Additional System Function
The exact relationship between the module and the host controller depends on the specific Siemens platform and hardware configuration.
Expansion Module Working Principle
An expansion module operates as part of a larger PLC or automation system rather than as an independent controller.
The main controller executes the application program and coordinates the automation process. The expansion module communicates with the controller through the supported system interface and provides its designated functionality to the overall system.
A simplified information path can be represented as:
Controller → System Interface → Expansion Module → Associated Automation Function
This modular approach allows system designers to select compatible hardware according to the requirements of the machine or process.
Because the precise function depends on the associated Siemens platform, engineers should verify the applicable technical documentation and hardware configuration before commissioning.
Role in Industrial Automation
Expansion modules provide flexibility when building industrial control systems.
A compatible automation architecture may include:
- PLC CPU
- Power supply
- Expansion modules
- Digital input modules
- Digital output modules
- Analog input modules
- Analog output modules
- Communication modules
- HMI panels
- Industrial network equipment
- Sensors
- Actuators
- Motor control equipment
The 6AG1055-1MD00-7BA2 forms part of this modular structure and can help extend a compatible control architecture according to application requirements.
The modular design approach can also simplify maintenance because individual system components can be inspected or replaced without necessarily replacing the complete control platform.
Industrial Applications
The Siemens 6AG1055-1MD00-7BA2 can be incorporated into compatible industrial automation systems used in a variety of applications.
Factory Automation
Manufacturing equipment frequently uses modular PLC systems to coordinate sensors, actuators, motors, conveyors, and production machinery.
Machine Control
Machine builders can use expansion hardware to configure control systems according to the specific requirements of individual machines.
Packaging Machinery
Packaging equipment often requires coordinated control of multiple sensors and actuators. A modular automation architecture can provide the necessary flexibility.
Material Handling
Conveyors, sorting machines, warehouse systems, and handling equipment can use modular PLC hardware to manage distributed automation functions.
Process Automation
Process systems may require additional control hardware as the number of monitored and controlled functions increases.
Infrastructure Systems
Water treatment, HVAC, utility, and building automation systems can also use modular control architectures where additional system hardware is required.
PLC System Architecture
A typical modular industrial automation system can be represented as:
Field Devices → I/O Hardware → PLC Controller → Expansion Hardware → HMI / Industrial Network
The actual system architecture depends on the Siemens controller and application.
A simplified operating sequence may include:
- Sensors detect process conditions.
- I/O hardware acquires field signals.
- The PLC CPU processes the application logic.
- Expansion hardware provides additional system functionality.
- Output hardware controls field devices.
- Communication equipment transfers data to other automation systems.
- HMI equipment provides operator monitoring and control.
The 6AG1055-1MD00-7BA2 therefore operates as part of the broader control architecture rather than as an isolated device.
Installation Guidelines
Correct installation is important for reliable system operation.
Verify the Part Number
Before installation, confirm the complete ordering number:
Siemens 6AG1055-1MD00-7BA2
The part number should be checked against the intended automation system.
Confirm Compatibility
Before installing the module, verify compatibility with:
- Controller family
- Expansion architecture
- Hardware configuration
- Interface requirements
- Firmware requirements
- Application configuration
Inspect the Module
Before installation, check the module for:
- Mechanical damage
- Cracked housing
- Damaged connectors
- Contamination
- Bent connection points
- Signs of transportation damage
Install Carefully
Mount the module according to the applicable Siemens installation procedure.
Avoid excessive force when inserting or securing the module.
Verify Wiring
Where external connections are required, all wiring should be checked carefully before system power is applied.
Commissioning Procedure
After installation, the module should be commissioned as part of the complete automation system.
A general commissioning sequence can include:
- Confirm the 6AG1055-1MD00-7BA2 ordering number.
- Verify system compatibility.
- Inspect the module and connectors.
- Install the module correctly.
- Check all relevant wiring.
- Apply system power according to the approved startup procedure.
- Check controller and module status information.
- Verify that the module is correctly recognized.
- Review diagnostic information.
- Verify the hardware configuration.
- Test the relevant automation functions.
- Confirm stable system operation.
The exact procedure depends on the Siemens controller, engineering software, and application architecture.
Troubleshooting the 6AG1055-1MD00-7BA2
Troubleshooting should consider the complete automation system rather than focusing only on the expansion module.
Module Not Recognized
If the controller does not recognize the expansion module, check:
- Complete part number
- Module installation
- Connector seating
- Controller compatibility
- Hardware configuration
- Firmware compatibility
- System power
- Diagnostic information
A configuration mismatch can create symptoms that appear similar to a hardware fault.
Diagnostic Error
If the PLC reports a diagnostic error, record the exact diagnostic information before replacing hardware.
Check:
- Module position
- Hardware configuration
- System connections
- Power conditions
- Controller status
- Communication path
Intermittent Operation
Intermittent operation may be associated with:
- Loose connections
- Mechanical vibration
- Wiring problems
- Electrical interference
- Power instability
- Configuration errors
- Hardware problems
The module should be inspected together with the associated controller and system wiring.
Fault After Replacement
If a fault appears after installing a replacement module, verify:
- Correct Siemens part number.
- Correct installation position.
- Controller compatibility.
- Hardware configuration.
- Connector installation.
- Firmware requirements.
- Diagnostic information.
Maintenance Recommendations
Routine maintenance can help maintain reliable operation of the automation system.
Inspect the Module
Check the housing, connectors, mounting arrangement, and visible surfaces for physical damage.
Maintain Clean Connections
Keep the module and its connection points clean and free from contamination.
Monitor Cabinet Conditions
Excessive dust, moisture, heat, and vibration can negatively affect industrial electronic equipment.
Review Diagnostic Information
Repeated module or controller diagnostic messages should be investigated promptly.
Maintain Configuration Backups
Keep current copies of the PLC hardware configuration and application data according to the plant’s maintenance procedures.
Physical Dimensions and Weight
The supplied physical specifications for the Siemens 6AG1055-1MD00-7BA2 are:
| Physical Parameter | Value |
|---|---|
| Length | 90 mm |
| Width | 35.5 mm |
| Depth | 58 mm |
| Weight | 0.13 kg |
The compact 35.5 × 90 × 58 mm form factor makes the module suitable for space-conscious industrial control installations.
The listed 0.13 kg weight also allows convenient handling during installation, maintenance, and replacement.
Replacement Considerations
When replacing a Siemens 6AG1055-1MD00-7BA2, the complete ordering number should be verified carefully.
Important identification information includes:
- Manufacturer
- Complete model number
- Product type
- Controller platform
- Hardware configuration
- Module position
- Firmware compatibility
- Interface requirements
- Application requirements
A module with a similar appearance or identical dimensions should not automatically be treated as an interchangeable replacement.
Industrial automation modules may have different electrical and system functions despite having similar physical dimensions.
System Integration
The 6AG1055-1MD00-7BA2 may form part of a broader Siemens automation architecture containing:
| Component | Typical Function |
|---|---|
| PLC CPU | Executes application logic |
| Power Supply | Provides system power |
| Expansion Module | Extends compatible system functionality |
| Digital Input Module | Acquires discrete field signals |
| Digital Output Module | Controls discrete field devices |
| Analog Input Module | Acquires analog process information |
| Analog Output Module | Provides analog control signals |
| Communication Module | Provides industrial network connectivity |
| HMI | Operator monitoring and control |
| Engineering Software | Programming and hardware configuration |
The actual combination depends on the Siemens platform and application.
Engineering Best Practices
Confirm Compatibility Before Installation
Always verify that the 6AG1055-1MD00-7BA2 is supported by the target controller and expansion architecture.
Maintain Accurate Hardware Configuration
The engineering project should match the physical hardware installed in the PLC system.
Document the Module Position
Record the module’s physical location and function in electrical drawings and maintenance records.
Protect the Installation Environment
Maintain suitable cabinet conditions and protect the module from excessive dust, moisture, heat, and vibration.
Maintain Spare-Part Records
Record the complete Siemens ordering number in the site’s spare-parts database.
Perform Functional Testing
After installation or replacement, verify diagnostics and conduct an appropriate functional test before returning the equipment to normal production.
Key Advantages
Compact Form Factor
The 35.5 × 90 × 58 mm dimensions allow the module to fit into compact industrial automation installations.
Low Weight
With a listed weight of 0.13 kg, the module is convenient to handle during installation and maintenance.
Modular Expansion
The module supports a modular approach to industrial automation system design.
Flexible System Configuration
Expansion hardware allows compatible control systems to be configured around individual machine and process requirements.
Industrial Automation Integration
The 6AG1055-1MD00-7BA2 can operate as part of a compatible Siemens automation architecture containing controllers, I/O hardware, communication equipment, and operator interfaces.
Technical FAQs
What is the Siemens 6AG1055-1MD00-7BA2?
The Siemens 6AG1055-1MD00-7BA2 is an Expansion Module intended for integration into compatible Siemens industrial automation systems.
What is the purpose of the expansion module?
Its general role is to extend the functionality of a compatible control architecture. The exact function depends on the host Siemens platform and system configuration.
What are the dimensions of the 6AG1055-1MD00-7BA2?
The listed dimensions are 35.5 × 90 × 58 mm.
How much does the module weigh?
The listed weight is 0.13 kg.
Is the 6AG1055-1MD00-7BA2 a PLC CPU?
No. It is an Expansion Module, not the main PLC processing unit.
Can another Siemens expansion module replace it?
Not automatically. The complete ordering number, controller platform, hardware configuration, interface requirements, and application compatibility should be verified before replacement.
What should be checked if the module is not recognized?
Check the module installation, connector condition, controller compatibility, hardware configuration, firmware requirements, system power, and diagnostic information.
How should the module be maintained?
Maintenance should include physical inspection, connector checks, appropriate cabinet environmental control, diagnostic monitoring, and maintenance of current system configuration backups.
Conclusion
The Siemens 6AG1055-1MD00-7BA2 Expansion Module is a compact industrial automation component designed to extend the capabilities of a compatible Siemens control architecture. Modular expansion hardware provides flexibility for configuring PLC systems according to the requirements of different machines, production lines, and industrial processes.
With listed dimensions of 35.5 × 90 × 58 mm and a weight of 0.13 kg, the 6AG1055-1MD00-7BA2 offers a compact form factor for industrial control cabinets and automation equipment where efficient use of space is important.
For installation, commissioning, maintenance, and replacement, the complete 6AG1055-1MD00-7BA2 ordering number should be verified against the intended Siemens controller and hardware configuration. Proper compatibility verification, accurate hardware configuration, careful installation, and controlled commissioning are essential for reliable operation in industrial automation applications.