Description
The Siemens 6ES5941-7UA11 is a core processing module designed for the SIMATIC S5-115U programmable logic controller series. This CPU provides reliable logic execution for legacy automation environments, enabling the continued operation of critical machine control sequences and timing functions without the immediate need for a full-scale system migration.
Features
- Designed for seamless integration into the S5-115U rack architecture.
- Equipped with 1 Kbyte of internal RAM for logic and register management.
- Supports standard S5 backplane communication for I/O module interaction.
- Requires external battery backup to preserve memory state during power loss.
- Engineered for stable operation in demanding industrial environments.
Applications
This CPU is widely utilized in legacy industrial infrastructure, including thermal power stations, chemical processing plants, and oil and gas refining facilities. It is an essential component for maintaining existing control loops and minimizing operational downtime in systems still utilizing the S5-115U platform.
Technical Specifications
| Model |
6ES5 941-7UA11 |
| Series |
SIMATIC S5-115U |
| Memory |
1 Kbyte RAM |
| Power Consumption |
4.8 W |
| Operating Temperature |
0 to 55 deg C |
Installation Guidelines
- Ensure the rack is powered down before inserting or removing the CPU module to prevent electrical damage.
- Verify that the backplane connector pins are clean and free from oxidation before seating the module.
- Confirm the presence of a functional backup battery to ensure memory retention during outages.
- Maintain adequate ventilation within the cabinet to stay within the 55 deg C operating limit.
- Follow standard ESD precautions when handling the module to protect internal circuitry.
FAQ
Is this module compatible with other S5 series systems?
The 6ES5941-7UA11 is specifically engineered for the S5-115U system. It is not intended for use in S5-95U, S5-135U, or S5-155U racks.
Does this CPU require a memory sub-module?
The unit features 1 Kbyte of integrated RAM. Depending on the specific application requirements and program size, additional memory sub-modules may be used if the application exceeds the onboard capacity.
