The 6SL3040-0LA00-0AA1 is an original-generation SINAMICS S120 CU310 DP Control Unit designed for controlling an individual drive through a PROFIBUS DP automation network.
It performs the open-loop and closed-loop control functions required by a compatible power stage and connected motor.
The CU310 DP processes motor-control parameters, receives commands from the machine controller and returns actual values, operating status and diagnostic information over PROFIBUS.
Unlike a Motor Module or Power Module, the 6SL3040-0LA00-0AA1 does not directly supply electrical power to the motor. It provides the control and communication functions required by the drive axis.
This model belongs to the earlier CU310 generation and is now primarily used as a spare part for machines originally commissioned with this exact order number.
The later CU310-2 DP uses model 6SL3040-1LA00-0AA0. Although both versions use PROFIBUS, they belong to different hardware generations and should not be treated as automatic direct replacements.
Key Features
- Original-generation CU310 DP Control Unit
- Dedicated single-drive control
- Integrated PROFIBUS DP interface
- DRIVE-CLiQ component communication
- Open-loop and closed-loop motor control
- CompactFlash Card not included
- Suitable for legacy machine maintenance
- Later CU310-2 DP successor available
- Not a motor power module
Typical Applications
- Legacy conveyor systems
- Packaging machine axes
- Printing equipment
- Material handling drives
- Individual production-machine axes
Original CU310 Generation
The 6SL3040-0LA00-0AA1 belongs to the original CU310 hardware generation.
This positioning is important because the page should not identify it as:
- CU310-2 DP
- CU320 Control Unit
- Multi-axis central controller
- Current-generation PROFINET controller
Its primary role is the control of an individual PROFIBUS-connected drive in an existing machine architecture.
Single-Drive Control
The CU310 DP is intended for a dedicated drive axis.
Typical controlled functions may include:
- Motor-current regulation
- Speed control
- Torque control
- Positioning support
- Acceleration management
- Controlled deceleration
- Drive monitoring
- Fault diagnostics
The available functions depend on the installed firmware, memory card, power stage, motor feedback and commissioned project.
PROFIBUS DP Communication
The integrated PROFIBUS DP interface connects the Control Unit to the machine automation controller.
Typical communication data includes:
- Control words
- Speed setpoints
- Torque setpoints
- Actual motor speed
- Drive status
- Warning messages
- Fault information
- Diagnostic data
The PROFIBUS address, telegram configuration and PLC project must match the original machine settings.
DRIVE-CLiQ Integration
DRIVE-CLiQ connects the CU310 DP with compatible drive components.
Depending on the machine configuration, these may include:
- Power Modules
- Sensor Modules
- Terminal Modules
- Servo motors
- Motor encoders
- Additional feedback components
Typical DRIVE-CLiQ functions include:
- Component identification
- Parameter exchange
- Encoder-data transmission
- Status communication
- Fault diagnostics
- Topology detection
CompactFlash Card Requirement
The 6SL3040-0LA00-0AA1 is officially described as supplied without a CompactFlash Card.
The required card may contain:
- Drive firmware
- Motor parameters
- PROFIBUS settings
- Axis configuration
- Technology functions
- Safety licenses
- Machine-specific project data
Before replacement, verify:
- CompactFlash Card order number
- Firmware version
- Existing project backup
- Motor configuration
- Communication parameters
- Safety settings
- Required licenses
A replacement Control Unit without the correct card and project may not operate the machine correctly.
CU310 DP vs CU310-2 DP
Original CU310 DP
6SL3040-0LA00-0AA1
Earlier hardware generation
PROFIBUS DP communication
Legacy spare-part positioning
Without CompactFlash Card
CU310-2 DP
6SL3040-1LA00-0AA0
Later controller generation
PROFIBUS DP communication
Active product
Without CompactFlash Card
The later controller may require project conversion, firmware changes and recommissioning.
CU310 DP vs CU310-2 PN
CU310 DP
6SL3040-0LA00-0AA1
PROFIBUS DP network
Legacy single-drive controller
CU310-2 PN
6SL3040-1LA01-0AA0
PROFINET network
Current-generation single-drive controller
These controllers use different fieldbus architectures and cannot be exchanged without changing the automation project.
CU310 DP vs CU320-2 DP
CU310 DP
Designed mainly for one dedicated drive.
CU320-2 DP
Designed for centralized coordination of larger modular multi-axis drive groups.
The CU310 DP should not be described as the central controller for an entire complex multi-axis system.
System Integration
A typical operating configuration may include:
- CU310 DP Control Unit
- CompactFlash Card
- PROFIBUS network
- Compatible power stage
- Connected motor
- Motor feedback
- DRIVE-CLiQ components
- 24 V DC electronics supply
- Approved drive parameters
The Control Unit is not a standalone PLC, inverter or motor power module.
Legacy Replacement Positioning
The main value of the 6SL3040-0LA00-0AA1 is exact replacement in machines that were originally engineered around the first-generation CU310 DP.
Exact replacement may help retain:
- Existing PROFIBUS project
- Original cabinet layout
- Established drive parameters
- Current motor configuration
- Existing DRIVE-CLiQ topology
- Original commissioning structure
The complete order number must be matched before installation.
Replacement Identification
Correct Model Number
6SL3040-0LA00-0AA1
Correct Product Type
CU310 DP Control Unit
Controller Generation
Original CU310
Fieldbus
PROFIBUS DP
CompactFlash Card
Not Included
Successor Reference
6SL3040-1LA00-0AA0
Before replacement, confirm:
- Complete order number
- 0LA00 prefix
- 0AA1 suffix
- CompactFlash Card
- Firmware version
- PROFIBUS address
- PLC telegram configuration
- DRIVE-CLiQ topology
- Power-stage compatibility
- Motor parameters
- Safety configuration
Do not replace the module according to the CU310 name or physical appearance alone.
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 drive project.
Record the PROFIBUS address.
Record the DRIVE-CLiQ topology.
Confirm the CompactFlash Card.
Verify the exact order number.
Remove the existing Control Unit carefully.
Install the replacement securely.
Reconnect PROFIBUS and DRIVE-CLiQ cables.
Restore the approved project.
Test the motor at reduced speed.
Check communication and diagnostics.
Verify all machine safety functions.
Installation and commissioning should be completed by qualified drive-system personnel.
FAQ
Q1: What is 6SL3040-0LA00-0AA1?
A1: It is an original-generation SINAMICS S120 CU310 DP Control Unit for a dedicated PROFIBUS-connected drive.
Q2: Is it a CU310-2 DP?
A2: No. It is the earlier CU310 DP generation. The later CU310-2 DP uses model 6SL3040-1LA00-0AA0.
Q3: What fieldbus does it use?
A3: It uses PROFIBUS DP communication.
Q4: Is it a multi-axis central controller?
A4: Its primary positioning is individual drive control. Larger centralized multi-axis systems normally use a CU320 controller.
Q5: Does it directly supply motor power?
A5: No. A compatible power stage supplies motor power.
Q6: Is a CompactFlash Card included?
A6: No. The official product description states that it is supplied without a CompactFlash Card.
Q7: Is the model discontinued?
A7: It is currently positioned as a legacy spare part for existing installations.
Q8: What is the successor reference?
A8: The later PROFIBUS controller is 6SL3040-1LA00-0AA0 CU310-2 DP.
Q9: Can the CU310-2 DP directly replace it?
A9: Not automatically. Firmware, memory card, hardware, project and machine compatibility must be checked.
Q10: Can a CU310-2 PN replace it?
A10: Not directly. The PN version uses PROFINET, while this model uses PROFIBUS DP.
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