Siemens 6SL3040-0MA00-0AA1 SINAMICS CU320 Control Unit
Warranty: 1 year
Condition : brand new in factory sealed box
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Detail
- Product NameSiemens 6SL3040-0MA00-0AA1 SINAMICS CU320 Control Unit
- Item NO.3742725
- Weight1.5000 kg = 3.3069 lb = 52.9109 oz
- CategoryPLC
- BrandSiemens
- Creation Time2026-08-21
6SL3040-0MA00-0AA1
Overview
6SL3040-0MA00-0AA1 is a CU320 control unit from Siemens' SINAMICS S120 drive family. It serves as the central intelligence of the drive system, responsible for controlling and coordinating all connected drive modules, including current, speed, and position control loops for multiple axes.
The CU320 operates with a nominal supply voltage of 24 V DC and features 4 DRIVE-CLiQ interfaces for high-speed communication with power modules and motors. It includes 8 digital inputs and 8 bidirectional digital input/outputs, providing flexible integration with external control systems.
This first-generation CU320 (hardware version C or above) supports firmware up to V2.6 SP2 and is commonly used in multi-axis applications such as packaging, printing, textile, and steel industries.
- Siemens SINAMICS S120
- CU320 Drive Controller
- 24 V DC nominal supply
- 4 DRIVE-CLiQ interfaces
- Firmware support up to V2.6 SP2
Specifications
Electrical specifications
| Manufacturer | Siemens |
| Model | 6SL3040-0MA00-0AA1 |
| Product type | CU320 Control Unit |
| Series | SINAMICS S120 |
| Nominal supply voltage | 24 V DC |
| Input voltage range | 20.4 – 28.8 V DC |
| Base current consumption | 0.8 A |
| Heat dissipation | 20 W |
| DRIVE-CLiQ cable length | Max 100 m |
| Digital inputs | 8 (floating) |
| Digital I/O | 8 (bidirectional, non-floating) |
| Max digital output current | 500 mA per output |
Physical & environmental
| Mounting | DIN rail / Panel |
| Cooling | Passive air cooling |
| Operating temperature | 0°C to +55°C |
| Interfaces | DRIVE-CLiQ (x4), Profibus-DP, RS232 |
| Ground connection | M5 screw (3 Nm) |
| Certifications | CE, cULus |
Features
Multi-axis control capability
- Flexible axis configuration — With a performance expansion CF card, can control up to 6 servo axes, 4 vector axes, or 8 V/F axes.
- Mixed operation support — Servo or vector axes can be mixed with V/F axes on the same CU320, but servo and vector axes cannot be mixed on one control unit.
- Data exchange between axes — Any axis can read data from other axes controlled by the same CU320, enabling simple speed synchronization between multiple axes.
Interfaces & connectivity
- DRIVE-CLiQ communication — 4 DRIVE-CLiQ interfaces enable high-speed communication with power modules, motors, and encoders over cable lengths up to 100 m.
- Flexible I/O — 8 floating digital inputs and 8 bidirectional digital I/Os provide versatile integration with external control systems.
- Fieldbus integration — Built-in Profibus-DP interface and RS232 port enable connection to higher-level automation systems.
Applications
The CU320 is widely deployed in industrial applications requiring precise multi-axis motion control.
Lifecycle
Phased-out / Legacy no longer in active production — limited availability
Product status: The 6SL3040-0MA00-0AA1 is a first-generation CU320 that has been phased out by Siemens. It has been succeeded by the CU320-2 series (6SL3040-1MA00-0AA0 for DP, 6SL3040-1MA01-0AA0 for PN). It may still be available through surplus stock or authorized distributors as a legacy spare part for existing systems.
Spare parts & support: Replacement units and accessories are available through Siemens' standard support channels and authorized distributors, but availability may be limited. The final supported firmware version is V2.6 SP2.
Replacement & migration:
- CU320-2 uses a different CF card (not interchangeable with the original CU320) and supports newer firmware versions (V4.x and above).
- Older power modules (ALM, SMM) may be incompatible with CU320-2; components with order numbers ending on 3 or above are required.
- Full system revalidation and updated GSD files are required when migrating.
Recommendation: For existing systems using CU320, procuring spare units while available is advisable. For new installations, the CU320-2 series is the recommended solution.
FAQ – Frequently Asked Questions
With a performance expansion CF card, the CU320 can control up to 6 servo axes, 4 vector axes, or 8 V/F axes. Actual control capacity depends on the CU320 load and should be verified with the SIZER configuration tool.
No. Servo and vector axes cannot be mixed on the same CU320. However, either servo or vector axes can be mixed with V/F axes.
The final supported firmware version is V2.6 SP2. Hardware version C or above is required for V2.6 support.
Compatibility depends on component age. This first-generation CU320 is compatible with older power modules. When migrating to CU320-2, newer power modules (order numbers ending on 3 or above) may be required.
Siemens recommends the CU320-2 series: 6SL3040-1MA00-0AA0 for Profibus DP or 6SL3040-1MA01-0AA0 for Profinet PN. Note that a new CF card and firmware update are required for migration.
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