Siemens 6SL3040-1LA01-0AA0 SINAMICS S120 Control Unit CU310-2 PN

Key Features

• Single-Axis Control Unit – Designed for one-axis applications, mounted directly on SINAMICS S120 Blocksize Power Modules

• PROFINET Interface – Native PROFINET connectivity for high-speed industrial Ethernet communication

• On-Board DRIVE-CLiQ Port – Connects DRIVE-CLiQ motors or Sensor Modules Cabinet-Mounted (SMC) for motors without DRIVE-CLiQ interface

• Integrated I/O – 11 digital inputs, 8 bidirectional digital I/O, and 1 analog input (voltage/current selectable)

• On-Board Encoder Interface – Supports TTL/HTL incremental encoders or SSI absolute encoders without incremental signals

• Basic Operator Panel (BOP20) Compatible – Can be snapped on during operation for diagnostics and parameter changes

• STARTER Commissioning – Configured and diagnosed via Siemens STARTER engineering tool

• Compact Design – 73 mm width, reduces panel space requirements

Technical Parameters

Core Advantages

1. Native PROFINET Integration

The CU310-2 PN eliminates gateway hardware and protocol conversion overhead found in mixed-network facilities. With PROFINET cycle times under 10 milliseconds, it is well-suited for demanding motion applications such as crane hoists, flying shear lines, and conveyor synchronization. Siemens has certified over 300 third-party industrial device vendors for PROFINET compatibility, ensuring encoder, safety module, and gateway choices are not locked to a single supplier chain.

2. Compact Single-Axis Architecture

Unlike the CU320-2 multi-axis control unit, the CU310-2 is designed for one-to-one drive control. It mounts directly onto the Power Module without requiring an adapter module (CUA31), significantly reducing panel space and wiring complexity. For standalone axes or smaller machines, this compact architecture delivers full drive intelligence in a minimal footprint.

3. Integrated I/O and Encoder Interface

The CU310-2 PN includes comprehensive on-board I/O (11 DI, 8 DI/DO, 1 AI) and a versatile encoder interface supporting TTL/HTL incremental or SSI absolute encoders. This eliminates the need for additional I/O or encoder modules in many single-axis applications, further simplifying system design and reducing cost.

4. Proven Single-Axis Reliability

The CU310-2 platform is a well-proven control unit for SINAMICS S120 motion systems in PROFINET environments. Its industrial temperature range of 0 to +55°C makes it viable in machine-embedded installations without supplemental thermal management. The active product lifecycle status (PM300) ensures long-term availability and support.

5. Flexible Commissioning Options

The control unit supports configuration via Siemens STARTER engineering tool. The BOP20 Basic Operator Panel can be snapped on during operation for quick parameter changes and diagnostics without a connected PC. Firmware updates are performed via the engineering workstation over the PROFINET network.

Applications

The CU310-2 PN is deployed across a wide range of single-axis drive applications:

Recommended Models & Related Products

Note: The CU310-2 PN (this item) and CU310-2 DP differ only in their communication interface. Select the variant that matches your network infrastructure. The CU320-2 is required for multi-axis systems with shared DC bus configurations.

What's Included

• 1 × Siemens 6SL3040-1LA01-0AA0 CU310-2 PN Control Unit

Note: CompactFlash card, Power Module, motor, cables, and STARTER software are sold separately.

Why Buy From Us?

• New and Original – Genuine Siemens product

• In Stock – Ready to ship same/next business day

• Fully Tested – Each unit verified for functionality

• Warranty Included – Purchase with confidence

• Technical Support – Drive compatibility assistance available

Frequently Asked Questions (FAQ)

Q1: What is the Siemens 6SL3040-1LA01-0AA0?

It is the CU310-2 PN Control Unit for the SINAMICS S120 drive system, featuring a PROFINET interface. It is a single-axis control unit that mounts directly onto SINAMICS S120 Blocksize Power Modules to provide closed-loop control, communication, and positioning functions.

Q2: What is the difference between the CU310-2 PN and CU310-2 DP?

The CU310-2 PN (this item) uses PROFINET communication. The CU310-2 DP (6SL3040-1LA00-0AA0) uses PROFIBUS DP. They are otherwise functionally equivalent single-axis control units.

Q3: What is the difference between CU310-2 and CU320-2?

The CU310-2 is a single-axis control unit that mounts directly on a Power Module for one-to-one drive control. The CU320-2 is a multi-axis control unit for systems with multiple drives sharing a common DC link, requiring adapter modules (CUA31) for each Power Module.

Q4: Is a CompactFlash card included?

No. This article is supplied without a CompactFlash card. A CompactFlash card (e.g., 6SL3054-0EJ00-1BA0) must be ordered separately for firmware and parameter storage.

Q5: What is the operating temperature range?

The control unit operates from 0 to +55°C (32 to 131°F).

Q6: What encoder types are supported?

The on-board encoder interface supports TTL/HTL incremental encoders (100 m cable length) or SSI absolute encoders without incremental signals (100 m cable length). Maximum encoder frequency is 300 kHz.

Q7: How many digital inputs and outputs does it have?

It has 11 digital inputs and 8 bidirectional digital I/O (configurable as inputs or outputs). Each digital output supports up to 500 mA continuous current and is short-circuit proof.

Q8: Can I use the BOP20 with this control unit?

Yes. The BOP20 Basic Operator Panel (6SL3055-0AA00-4BA0) can be snapped onto the CU310-2 for parameter setting and diagnostics, including during operation.

Q9: What software is used for commissioning?

Commissioning and diagnostics are performed using Siemens STARTER engineering tool. Firmware updates are executed via the engineering workstation over the PROFINET network.

Q10: What is the lifecycle status of this product?

The CU310-2 PN is classified under PM300: Active Product, meaning it remains fully supported and available through Siemens channels.

Q11: What are the dimensions and weight?

Approximately 73 × 191 × 75 mm and 0.79 kg.

Q12: What is the country of origin?

Germany.

Q13: Does the CU310-2 support Safe Torque Off (STO)?

Yes. The CU310-2 PN supports STO functionality when used with compatible Power Modules and configured appropriately. STO can be activated and deactivated via terminals or parameter settings.