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- Siemens
- 6AG1591-1AA01-2AA0
- Front Flap
- Germany
- 35 mm
- 0.087 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6AG1591-1AA01-2AA0 is a SIPLUS S7-1500 Front Flap V2 CPU 35 mm used as a replacement front assembly for compatible S7-1500 CPUs. It belongs to the SIPLUS version of the S7-1500 accessory range and is intended for maintenance and replacement work on installed automation systems.
The front flap is fitted to the front of the CPU and forms part of the operator-facing section of the controller. It supports access to the CPU’s front interface and display area while maintaining the mechanical arrangement of the S7-1500 CPU housing.
For service teams, this type of spare part is useful when the CPU itself remains operational but the front flap or associated front assembly has been damaged or requires replacement. The existing CPU, user program, I/O configuration, and network connections remain in the control system.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Product Model | 6AG1591-1AA01-2AA0 |
| Product Family | SIPLUS S7-1500 |
| Product Type | Front Flap V2 CPU 35 mm |
| Product Designation | SIPLUS S7-1500 FRONTKLAPPE V2 CPU 35MM |
| Component Function | Front Flap / Spare Part |
| CPU Width | 35 mm |
| Version | V2 |
| Product Platform | SIMATIC S7-1500 |
| Application | S7-1500 CPU Front Assembly Replacement |
| Mounting Position | CPU Front |
| Component Type | Mechanical / Front Assembly |
| SIPLUS Version | Yes |
| Coating | Conformal Coating |
| Operating Temperature | -25 … +60 °C |
| Start-up Temperature | -20 °C |
| Storage/Transport Temperature | -40 … +70 °C |
| Maximum Installation Altitude | 5000 m |
| Weight | 0.087 kg |
Product Features
- SIPLUS S7-1500 front flap V2 for 35 mm CPU assemblies.
- Intended as a replacement component for compatible S7-1500 CPUs.
- V2 construction for the corresponding S7-1500 CPU generation.
- Conformal-coated SIPLUS construction.
- Installed directly on the front of the CPU.
- Maintains access to the CPU’s operator-facing front section.
- Suitable for planned maintenance and corrective replacement.
- Allows replacement of the front assembly without replacing the complete CPU.
- Suitable for SIPLUS applications with extended environmental requirements.
Working Principle
The 6AG1591-1AA01-2AA0 is a passive front assembly rather than a processing or signal-acquisition module. It does not execute the PLC program, handle I/O signals, or establish PROFINET communication.
During normal operation, the front flap is mounted on the CPU and forms part of the physical interface between the controller and the operator. The front section protects the CPU’s front area and allows the relevant operating and diagnostic elements to remain accessible.
During maintenance, the existing front assembly can be removed from the compatible CPU and replaced with the 6AG1591-1AA01-2AA0. The CPU’s control program and connected automation components remain within the existing system.
The SIPLUS version is intended for use with the environmental requirements associated with SIPLUS S7-1500 equipment.
Role in a SIPLUS S7-1500 Control Architecture
The 6AG1591-1AA01-2AA0 sits at the physical front of the CPU and supports the local operator and maintenance interface.
| System Element | Function |
|---|---|
| SIPLUS S7-1500 CPU | Executes the PLC program and controls the automation process |
| 6AG1591-1AA01-2AA0 | Provides the replacement front flap assembly for the compatible CPU |
| SIMATIC Memory Card | Stores the CPU program and configuration data where applicable |
| S7-1500 I/O Modules | Process field input and output signals |
| PROFINET Devices | Exchange process and diagnostic data with the CPU |
| Power Supply | Supplies the S7-1500 automation station |
| HMI System | Provides operator visualization and process control |
| Engineering Station | Used for programming, configuration, commissioning, and diagnostics |
Industrial Applications
| Application | Typical Use |
|---|---|
| Factory Automation | Replacement of damaged CPU front assemblies in S7-1500 control cabinets |
| Machine Control | Maintaining the front section of CPUs installed in production machinery |
| Packaging Systems | Spare-part replacement during scheduled equipment maintenance |
| Material Handling | Maintaining controller assemblies used in conveyors and automated handling equipment |
| Production Equipment | Restoring the physical CPU interface without replacing the complete controller |
| Process Machinery | Maintenance of SIPLUS-based automation equipment |
| Control Cabinet Service | Replacement of front assemblies during electrical cabinet maintenance |
| Retrofit Projects | Maintaining existing S7-1500 installations during equipment upgrades |
Installation and Maintenance
- Confirm CPU compatibility — Verify the installed CPU is suitable for the 35 mm V2 front flap before replacement.
- Check the spare-part number — Compare 6AG1591-1AA01-2AA0 with the maintenance documentation and existing component.
- Power down the equipment — Follow the machine or plant shutdown procedure before working on the CPU front assembly.
- Isolate the power supply — Apply the site’s electrical isolation and lockout procedures where required.
- Protect the CPU — Keep dust, moisture, metal particles, and other contaminants away from the exposed CPU area.
- Remove the existing front flap — Release the existing assembly carefully to avoid damaging the CPU housing.
- Inspect the CPU front area — Check for damaged retaining points, contamination, or mechanical deformation.
- Position the replacement — Align the 6AG1591-1AA01-2AA0 with the CPU front assembly correctly.
- Secure the front flap — Make sure the assembly is properly seated and mechanically retained.
- Check the front interface — Confirm that the flap and accessible CPU operating elements move and function correctly.
- Restore the controller — Re-energize the system according to the approved commissioning procedure.
- Verify CPU operation — Check the CPU status and diagnostic information after maintenance and record the replacement in the service documentation.
Compatible System Components
| Component | Function |
|---|---|
| SIMATIC S7-1500 35 mm CPU | Compatible CPU platform for the front flap assembly |
| SIPLUS S7-1500 CPU | SIPLUS controller platform for extended environmental applications |
| SIMATIC S7-1500 I/O Modules | Local and distributed process signal interfaces |
| SIMATIC ET 200SP | Distributed I/O platform commonly integrated with S7-1500 systems |
| PROFINET Network Components | Controller and field-device communication |
| SIMATIC Memory Card | Program and configuration storage |
| S7-1500 Power Supply | System power supply |
| SIMATIC HMI | Operator visualization and control |
| TIA Portal Engineering System | PLC configuration, programming, commissioning, and diagnostics |
Recommended Related Models
| Model | Product / Application |
|---|---|
| 6AG1591-1BA01-2AA0 | SIPLUS S7-1500 Front Flap V2 CPU 70 mm |
| 6ES7591-1AA01-0AA0 | Standard S7-1500 Front Flap V2 CPU 35 mm |
| 6ES7591-1BA01-0AA0 | Standard S7-1500 Front Flap V2 CPU 70 mm |
| 6AG1591-1BB00-2AA0 | SIPLUS S7-1500 Display Module |
| 6ES7591-1BB00-0AA0 | Standard S7-1500 Display Module |
| 6AG1511-1AK02-2AB0 | SIPLUS S7-1500 CPU platform |
| 6AG1513-1AL02-2AB0 | SIPLUS S7-1500 CPU platform |
| 6AG1515-2AM02-2AB0 | SIPLUS S7-1500 CPU platform |
Key Advantages
- Intended for 35 mm S7-1500 CPU front assembly replacement.
- V2 front flap configuration.
- SIPLUS version with conformal-coated construction.
- Maintains the original CPU installation.
- Useful for planned maintenance and corrective service.
- Supports replacement of the front assembly instead of the complete CPU.
- Suitable for SIPLUS automation installations.
Technical FAQs
What is Siemens 6AG1591-1AA01-2AA0?
The 6AG1591-1AA01-2AA0 is a SIPLUS S7-1500 Front Flap V2 CPU 35 mm used as a spare front assembly for compatible S7-1500 CPUs.
Is the 6AG1591-1AA01-2AA0 a CPU?
No. It is a front flap assembly and does not contain the PLC processing functions of an S7-1500 CPU.
What does CPU 35 mm refer to in this model?
CPU 35 mm identifies the CPU width for which this front flap assembly is intended. The corresponding CPU must be checked for compatibility before installation.
Can the front flap be replaced without replacing the CPU?
The front flap is a separate spare component, so maintenance can replace the front assembly when the CPU itself remains serviceable and the replacement is compatible with the installed CPU.