General Information

• Brand: Siemens
• Part Number: 6SL3040-0NC00 (full model often includes a suffix like -0AA0, referring to CU320-2 PN)
• Product Series: SINAMICS S120 (Siemens’ high-performance drive series for industrial motion control)
• Product Type: Control Unit (CU) – Model CU320-2 PN
• Core Function: Central control for SINAMICS S120 drive modules (e.g., power modules, motor modules), supporting multi-axis coordination and network communication.
• Compatibility: Works with SINAMICS S120 power units (PM240, PM340, etc.) and motor modules; configurable via STARTER or TIA Portal software.

Technical Specifications

1. Processor & Performance

• Processing Capacity: Supports up to 6 drive axes (vector control) or 8 drive axes (V/f control), enabling synchronized motion for multi-axis systems (e.g., conveyors, robotics).
• Control Modes: Compatible with multiple control modes, including:
  • V/f control (Voltage/Frequency control)
  • Vector control (for high-precision speed/torque control)
  • Servo control (for position control, e.g., in machine tools)
• Cycle Time: Minimum control cycle of 125 µs (for fast dynamic response in high-precision applications).

2. Communication Interfaces

• Built-in Interfaces:
  • 2 x PROFINET IO interfaces (RJ45 ports, 10/100 Mbit/s), supporting PROFINET IRT (Isochronous Real-Time) for deterministic, low-latency communication.
  • 1 x RS485 interface (for USS/MODBUS RTU communication with external devices like HMIs or sensors).
  • 1 x DRIVE-CLiQ interface (Siemens proprietary bus) – for connecting to SINAMICS drive modules (power units, encoders) and I/O modules (e.g., TM15, TM31).
• Expansion Interfaces: 1 x slot for optional communication cards (e.g., Profibus DP card, Ethernet/IP card) to extend network compatibility.

3. Power Supply & Electrical Ratings

• Supply Voltage: 24 V DC (tolerance range: 19.2 V DC – 28.8 V DC)
• Power Consumption: Typical 15 W (without external loads or expansion modules)
• DRIVE-CLiQ Power: Supplies 5 V DC / 2 A via DRIVE-CLiQ bus to connected modules.

4. Operating Environment

• Temperature Range:
  • Operating: 0 °C – 60 °C (suitable for industrial drive cabinets)
  • Storage: -25 °C – 70 °C
• Humidity: 5% – 95% (non-condensing, compliant with IEC 61800-3)
• Electromagnetic Compatibility (EMC): Complies with EN 61800-3 (industrial EMC requirements) and EN 61000-6-2, resisting interference from motors and power electronics.
• Vibration/Shock Resistance:
  • Vibration: 5 Hz – 150 Hz, 0.5 g acceleration (IEC 60068-2-6)
  • Shock: 15 g acceleration (11 ms duration, IEC 60068-2-27)

5. Mechanical Characteristics

• Dimensions (W×H×D): 48 mm × 140 mm × 190 mm (compact design for standard drive cabinets)
• Mounting Method: DIN rail mounting (conforms to IEC 60715, 35 mm standard rail) or panel mounting via adapter
• Protection Level: IP20 (front panel; prevents dust and small debris from entering internal components)

Functional Features

1. Multi-Axis Coordination: Enables synchronized control of multiple axes (e.g., master-slave axis control, electronic gearing) for complex motion tasks (e.g., packaging machinery, printing presses).
2. Real-Time Communication: PROFINET IRT support ensures deterministic data transmission (cycle times down to 1 ms), critical for applications requiring precise synchronization (e.g., CNC machine tools).
3. Diagnostic & Monitoring: Built-in diagnostics for drive faults (overcurrent, overvoltage, temperature) and communication errors; provides detailed fault codes via LEDs and software (STARTER/TIA Portal) for quick troubleshooting.
4. Safety Functions: Optional integration of safety functions (via safety modules like TM54F) to meet EN ISO 13849-1 (SIL 2) and IEC 61508 standards (e.g., Safe Torque Off, STO).
5. Flexible Configuration: Supports parameterization via STARTER software (for detailed drive tuning) or TIA Portal (for integration with SIMATIC PLCs), enabling seamless integration into total automation systems.

Application Areas

• Machine Tools: Controls spindle and feed axes in CNC lathes, milling machines, and machining centers, ensuring high-precision position and speed control.
• Material Handling: Coordinates multi-axis conveyors, robotic arms, and lifting equipment in logistics warehouses and production lines.
• Packaging & Printing: Synchronizes drive axes in packaging machines (e.g., filling, sealing) and printing presses (e.g., web tension control).
• Process Industry: Controls pumps, fans, and compressors in chemical, petroleum, and water treatment plants, optimizing energy efficiency via vector control.
• Automotive Manufacturing: Drives robotic assembly lines, conveyor systems, and paint shop equipment, requiring reliable multi-axis synchronization.