The 6SL3040-1LA01-0AA0 is a SINAMICS S120 CU310-2 PN Control Unit designed for controlling an individual drive within a PROFINET-based automation system.
It performs the open-loop and closed-loop control functions required by a compatible power stage and connected motor.
The integrated PROFINET interface allows the controller to exchange commands, setpoints, actual values, operating status and diagnostic information with the machine automation system.
Unlike the CU320-2 PN, which is intended for centralized coordination of larger modular multi-axis drive groups, the CU310-2 PN is positioned for distributed single-drive applications.
This makes it suitable for machines where individual motor axes are installed at separate locations and each axis requires its own dedicated drive controller.
The 6SL3040-1LA01-0AA0 is supplied without a CompactFlash Card. The correct card, firmware, licenses and drive project must therefore be confirmed separately before commissioning.
Key Features
- CU310-2 PN Control Unit
- Integrated PROFINET communication
- Dedicated single-drive control
- DRIVE-CLiQ system connection
- Open-loop and closed-loop motor control
- Suitable for distributed machine layouts
- CompactFlash Card not included
- Supports compatible safety configurations
- Active product
Typical Applications
- Conveyor axes
- Packaging machine stations
- Printing equipment
- Handling systems
- Distributed production machinery
Single-Drive Control Architecture
The CU310-2 PN is designed to control one dedicated drive system rather than acting as the central controller for a large multi-axis drive group.
A typical configuration may include:
- CU310-2 PN Control Unit
- Compatible Power Module or Motor Module
- One connected motor
- Motor feedback device
- PROFINET connection
- DRIVE-CLiQ components
- CompactFlash Card
- Approved drive parameters
This distributed architecture allows separate motor axes to be controlled independently across the machine.
PROFINET Communication
The integrated PROFINET interface connects the CU310-2 PN to the machine automation network.
Typical communication data includes:
- Run and stop commands
- Speed setpoints
- Torque setpoints
- Positioning commands
- Actual speed values
- Drive status
- Warning messages
- Fault diagnostics
The PROFINET device name, IP configuration and telegram structure must match the PLC project.
Distributed Machine Integration
The CU310-2 PN is particularly suitable where machine drives are physically distributed rather than concentrated in one central drive cabinet.
Typical benefits include:
- Dedicated control for each motor axis
- Shorter motor and feedback wiring
- Modular machine construction
- Easier station-level replacement
- Independent drive commissioning
- Flexible production-line expansion
It should not be described as a general PLC or a central multi-axis controller.
DRIVE-CLiQ Integration
DRIVE-CLiQ connects the Control Unit to compatible drive components.
Depending on the system, connected devices may include:
- Power Modules
- Motor Modules
- Sensor Modules
- Terminal Modules
- Servo motors
- Motor encoders
Typical DRIVE-CLiQ functions include:
- Automatic component identification
- Motor data transfer
- Parameter exchange
- Feedback communication
- Fault diagnostics
- System topology detection
CompactFlash Card Requirement
The 6SL3040-1LA01-0AA0 is supplied without a CompactFlash Card.
The card may contain:
- Drive firmware
- Motor parameters
- PROFINET configuration
- Technology functions
- Safety licenses
- Machine-specific drive project
Before installation, confirm:
- CompactFlash Card order number
- Firmware version
- Drive project
- Required licenses
- Motor configuration
- Safety parameters
- Existing project backup
A controller without the correct CompactFlash Card may not start or operate the drive correctly.
CU310-2 PN vs CU310-2 DP
CU310-2 PN
6SL3040-1LA01-0AA0
Integrated PROFINET interface
Designed for Ethernet-based automation networks
CU310-2 DP
6SL3040-1LA00-0AA0
Integrated PROFIBUS DP interface
Designed for PROFIBUS-based machine systems
The correct version must match the original PLC communication network.
CU310-2 PN vs CU320-2 PN
CU310-2 PN
Dedicated controller for an individual distributed drive
Suitable for one local motor axis
Compact station-level architecture
CU320-2 PN
Central controller for modular multi-axis drive groups
Coordinates several Line Modules and Motor Modules
Used in larger centralized drive cabinets
These controllers should not be treated as interchangeable simply because both support PROFINET.
CU310-2 PN vs CUA31
CU310-2 PN
Executes motor-control algorithms and communicates with the PLC.
CUA31
Acts as an adapter between a compatible Blocksize Power Module and a higher-level DRIVE-CLiQ controller.
The CUA31 cannot replace the CU310-2 PN because it does not provide independent drive-control processing.
Motor Control Functions
The CU310-2 PN performs the control functions required by the connected motor axis.
Depending on the installed firmware and configuration, these may include:
- Speed control
- Torque control
- Positioning support
- Motor-current regulation
- Acceleration control
- Controlled deceleration
- Drive diagnostics
- Motor feedback evaluation
The available functions depend on the complete drive hardware, firmware and license configuration.
Safety Configuration
The Control Unit can be used in compatible Safety Integrated systems.
The implemented safety functions depend on:
- Firmware version
- Safety license
- Motor feedback
- Power-stage hardware
- PROFINET safety configuration
- Machine safety program
- Final validation
Do not publish a specific SIL or PL level unless the complete machine safety function has been verified.
System Requirements
A complete operating system normally requires:
- CU310-2 PN Control Unit
- CompactFlash Card
- Compatible power stage
- Motor
- Motor feedback
- 24 V DC electronics supply
- PROFINET network
- DRIVE-CLiQ connections
- Approved drive parameters
The CU310-2 PN does not directly deliver motor power.
Replacement Identification
Correct Model Number
6SL3040-1LA01-0AA0
Correct Product Type
CU310-2 PN Control Unit
Network Interface
PROFINET
Drive Positioning
Distributed Single-Drive Controller
CompactFlash Card
Not Included
Before replacement, confirm:
- Complete order number
- PN suffix and PROFINET network
- CompactFlash Card
- Firmware version
- Drive project backup
- Motor parameters
- Safety licenses
- DRIVE-CLiQ topology
- Power-stage compatibility
- PROFINET device name
Do not select the replacement only according to the CU310-2 name or physical appearance.
Installation Guidelines
Disconnect the complete drive-system supply.
Wait for the DC link to discharge fully.
Verify the absence of hazardous voltage.
Back up the existing drive project.
Record the PROFINET device name.
Record the IP configuration.
Record the DRIVE-CLiQ topology.
Confirm the CompactFlash Card.
Verify the exact order number.
Install the Control Unit securely.
Reconnect PROFINET and DRIVE-CLiQ cables.
Restore the approved project.
Test the motor at reduced speed.
Verify communication and diagnostics.
Validate all machine safety functions.
Installation and commissioning should be completed by qualified drive-system personnel.
FAQ
Q1: What is 6SL3040-1LA01-0AA0?
A1: It is a SINAMICS S120 CU310-2 PN Control Unit for an individual PROFINET-connected drive.
Q2: What communication interface does it use?
A2: It has an integrated PROFINET interface.
Q3: Is it intended for multi-axis centralized control?
A3: Its primary positioning is dedicated single-drive control. Larger centralized multi-axis systems normally use a CU320-2 controller.
Q4: Does it directly supply motor power?
A4: No. A compatible Power Module or Motor Module supplies motor power.
Q5: Is a CompactFlash Card included?
A5: No. The official product configuration is supplied without a CompactFlash Card.
Q6: Is a CompactFlash Card required?
A6: A compatible card containing the required firmware and drive project is normally required for operation.
Q7: What is the difference between PN and DP versions?
A7: The PN version uses PROFINET, while the DP version uses PROFIBUS DP.
Q8: Does it use DRIVE-CLiQ?
A8: Yes. DRIVE-CLiQ connects compatible power stages, motors and feedback components.
Q9: Can it replace a CU320-2 PN?
A9: Not directly. The CU310-2 PN is intended for an individual distributed drive, while the CU320-2 PN coordinates larger multi-axis drive groups.
Q10: Is this model still active?
A10: Yes. It is officially listed as an active product.
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