Siemens 6SL3243-0BB30-1FA0 CU310-2 PN – Single-Axis PROFINET Control Unit | SINAMICS S120
The Siemens 6SL3243-0BB30-1FA0 is the CU310-2 PN Control Unit for the SINAMICS S120 modular drive platform — engineered for precision single-axis servo and vector drive control in demanding industrial automation environments. With an integrated PROFINET IO interface, this control unit delivers deterministic real-time communication, seamless TIA Portal integration, and full compatibility with Siemens SIMATIC S7 PLC ecosystems.
Konmask.com supplies this unit as a genuine, tested component sourced through verified industrial channels, backed by pre-shipment functional inspection and full traceability documentation — meeting the procurement standards of OEM integrators, MRO teams, and plant engineering departments worldwide.
Complete Technical Specifications
| Part Number / SKU | 6SL3243-0BB30-1FA0 |
| Product Family | SINAMICS S120 |
| Module Type | CU310-2 PN — Control Unit, Single-Axis |
| Manufacturer | Siemens AG |
| Communication Interface | PROFINET IO (IRT & RT), 2-port integrated switch |
| Additional Interface | USB (service/commissioning), SD card slot |
| Drive Control Axes | 1 axis (servo or vector) |
| Encoder Interfaces | HTL/TTL incremental, SSI, EnDat 2.1/2.2, DRIVE-CLiQ |
| Digital Inputs | 11 × DI (24 V DC) |
| Digital Outputs | 2 × DO (24 V DC, 0.5 A) |
| Analog Inputs | 2 × AI (±10 V / 0–20 mA) |
| Supply Voltage | 24 V DC (via SINAMICS S120 booksize backplane) |
| Firmware | SINAMICS Firmware V4.x and above |
| Safety Functions | STO (Safe Torque Off) via PROFIsafe (optional) |
| Ambient Temperature | 0 °C to +55 °C (operating); −40 °C to +70 °C (storage) |
| Protection Class | IP20 |
| Mounting | Booksize format, DIN rail / panel mount |
| Weight | Approx. 4,200 g (with packaging) |
| Certifications | CE, UL, cUL, RoHS |
| Country of Origin | Germany |
Proven Application Environments
- Machine Tool & CNC Systems — High-precision spindle and feed axis control with sub-millisecond cycle times via PROFINET IRT
- Packaging Machinery — Coordinated multi-drive synchronization through SIMATIC S7 / TIA Portal integration
- Printing & Converting Lines — Register control and tension management requiring deterministic servo response
- Robotics & Handling Systems — Single-axis servo positioning with EnDat/SSI absolute encoder feedback
- Textile & Winding Equipment — Torque-controlled vector drive applications with analog setpoint input
- Plastics Processing — Extruder and injection molding drive control with STO safety integration
- MRO / Spare Parts Replacement — Drop-in replacement for existing SINAMICS S120 booksize installations
Engineering Advantages
- PROFINET IRT — Isochronous Real-Time communication enables cycle times down to 250 µs, critical for high-speed servo applications
- DRIVE-CLiQ — Siemens proprietary digital encoder interface eliminates manual parameterization; motor and encoder data loaded automatically
- TIA Portal Native — Full integration with Siemens TIA Portal V14+ for commissioning, diagnostics, and firmware updates without additional software
- Integrated 2-Port PROFINET Switch — Enables line topology wiring, reducing cabinet cabling complexity and cost
- SD Card Slot — Enables rapid parameter backup/restore and firmware updates in the field without a PC connection
- Scalable Safety — Optional PROFIsafe STO function supports SIL 2 / PLd safety architectures without external safety relays
- Compact Booksize Form Factor — Minimizes control cabinet footprint while maintaining full single-axis drive functionality
System Architecture & Signal Flow
The 6SL3243-0BB30-1FA0 CU310-2 PN operates as the intelligence layer within the SINAMICS S120 booksize drive system. It connects upstream to the SIMATIC S7 PLC via PROFINET IO and downstream to the Motor Module (Power Unit) via the SINAMICS internal backplane bus. Encoder feedback is received via DRIVE-CLiQ or conventional HTL/TTL/SSI interfaces. The control unit executes the closed-loop speed and torque algorithms, manages safety functions, and handles all fieldbus communication — offloading the PLC from real-time drive control tasks.
Typical signal path: SIMATIC S7 → PROFINET → CU310-2 PN (6SL3243-0BB30-1FA0) → Backplane → Motor Module → Servo/Induction Motor → Encoder feedback → CU310-2 PN
Sourcing & Quality Verification
- Genuine OEM Component — Sourced through verified industrial distribution channels; not refurbished or counterfeit
- Pre-Shipment Inspection — Each unit undergoes visual inspection, label verification (part number, date code, firmware version), and functional power-on check
- Traceability Documentation — Certificate of conformity and packing list provided with every shipment
- Packaging — Ships in original or equivalent ESD-safe anti-static packaging with foam protection
- Warranty — 12-month warranty against manufacturing defects; DOA replacement within 7 business days
Procurement Process
- Confirm Part Number — Verify 6SL3243-0BB30-1FA0 against your SINAMICS S120 system BOM or existing drive nameplate
- Request Quote — Contact support@konmask.com for volume pricing, lead time, and export documentation (if applicable)
- Order & Payment — Secure checkout via Konmask.com; T/T bank transfer available for B2B orders above USD 500
- Shipping — DHL Express / FedEx International Priority standard; sea freight available for bulk orders. Export customs documentation included
- Delivery & Commissioning Support — Technical support available post-delivery for TIA Portal commissioning guidance
Technical FAQ
Q: Is the 6SL3243-0BB30-1FA0 compatible with SINAMICS S120 chassis format power units?
A: No. The CU310-2 PN is designed exclusively for the SINAMICS S120 booksize format. For chassis format systems, refer to the CU320-2 PN (6SL3040-1MA01-0AA0).
Q: Can this control unit manage multiple axes?
A: No. The CU310-2 PN controls a single axis. For multi-axis applications, use the CU320-2 PN with multiple Motor Modules on a shared DC bus.
Q: What firmware version is pre-installed?
A: Units are supplied with the firmware version current at time of manufacture. Firmware can be updated via SD card or TIA Portal to the latest SINAMICS V5.x release.
Q: Does this unit support PROFIBUS DP?
A: No. The 6SL3243-0BB30-1FA0 supports PROFINET IO only. For PROFIBUS DP, refer to the CU310-2 DP (6SL3243-0BB30-1PA0).
Q: Is STO (Safe Torque Off) included as standard?
A: STO via terminal (hardwired) is standard. STO via PROFIsafe requires the Safety Integrated license option.
Q: What is the minimum order quantity?
A: MOQ is 1 unit. Volume discounts apply for orders of 5+ units.
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