The 6SL3040-0MA00-0AA1 is a control unit (CU320) from the Siemens SINAMICS S120 family — a core component that orchestrates drive modules, sensors, and communication interfaces in modular drive systems. Designed for flexibility and robust control, it accepts a 24 V DC supply (nominal) and manages digital I/O as well as communication with other system modules through interfaces such as DRIVE-CLiQ, PROFIBUS, and RS-232.
Compact yet powerful, this control unit can coordinate one or multiple motor modules (depending on system configuration), monitor feedback and sensors, and manage drive logic, safety functions, and communication protocols. Its modular architecture makes it a preferred choice for custom automation systems, multi-axis servo installations, and any application that demands precise coordination of drives, encoders, and sensors.
Used widely in industrial automation — including CNC machines, robotics, packaging, printing and processing lines — the CU320 ensures scalable, maintainable, and flexible drive system control. It is particularly advantageous when a modular, space-saving controller is needed to manage multiple drives without bulky centralized PLCs or outdated control hardware.
Key Features
- Control Unit (CU320) for SINAMICS S120 modular drive system
- Supply Voltage: 24 V DC (input range 20.4–28.8 V DC)
- Input Current / Load Capacity: 6.5 A supply current at 24 V DC
- Interfaces: DRIVE-CLiQ (for motor modules / feedback), PROFIBUS, RS-232
- Digital I/O: 8 digital inputs, additional digital outputs for control tasks
- Compact form factor — suitable for panel or control-cabinet mounting
- Supports safe, modular multi-drive setups with monitoring and diagnostics
- Modular architecture — allows system expansion with servo drives, encoder modules, line modules
Technical Specifications
| Specification | Details |
| Model / Series | 6SL3040-0MA00-0AA1 (SINAMICS S120, CU320 control unit) |
| Supply Voltage | 24 V DC (20.4–28.8 V DC) |
| Supply Current | 6.5 A (nominal) |
| Digital Inputs | 8 |
| Digital Outputs | Digital outputs for control (24 V DC, up to 0.5 A each) |
| Communication Interfaces | DRIVE-CLiQ, PROFIBUS, RS-232 |
| Mounting / Format | Panel / control-cabinet mounting (compact module) |
| Protection Rating | IP20 (cabinet/open-panel use) |
| Typical Use | Central control for modular SINAMICS S120 drive systems |
| Compatible Modules | Servo / motor modules, sensor modules, line modules under S120 |
| Weight (approx.) | ~1.5 kg |
Applications
- Central control of modular drive racks (single- or multi-motor systems)
- CNC machines and multi-axis motion control platforms
- Industrial robotics and automation cells requiring precise drive coordination
- Packaging, printing, textile, or processing lines using modular servo drives
- Retrofit or upgrade of legacy inverter/drive installations with modular S120 architecture
- Any automation setup requiring scalable, maintainable drive control with flexible communication
