Siemens 6SL3244-0BB12-1PA1 CU240E-2DP – PROFIBUS Drive Control Unit | SINAMICS G120 Platform
Engineering Background
The SINAMICS G120 series represents Siemens’ modular, scalable drive architecture designed for demanding industrial automation environments. The CU240E-2DP Control Unit is the PROFIBUS DP variant of the CU240E-2 family, engineered to deliver precise closed-loop speed and torque control with full fieldbus integration into SIMATIC and third-party PLC ecosystems.
Product Positioning
The 6SL3244-0BB12-1PA1 is purpose-built for procurement engineers and system integrators who require a certified, OEM-sourced control unit with deterministic PROFIBUS DP communication, safety-ready I/O, and seamless compatibility with SINAMICS G120 Power Modules (PM240, PM250, PM260). It is the preferred choice for conveyor systems, pumps, fans, compressors, and general-purpose variable-speed drive applications.
Complete Technical Specifications
- Part Number / SKU: 6SL3244-0BB12-1PA1
- Product Family: SINAMICS G120 – CU240E-2DP
- Control Unit Type: Drive Control Unit (CU) with PROFIBUS DP
- Fieldbus Interface: PROFIBUS DP (up to 12 Mbit/s), 9-pin Sub-D connector
- Digital Inputs: 6 × DI (24 V DC, PNP/NPN selectable)
- Digital Outputs: 3 × DO (relay, 30 V DC / 0.5 A)
- Analog Inputs: 2 × AI (0–10 V / 0–20 mA / 4–20 mA)
- Analog Outputs: 2 × AO (0–20 mA)
- Safety Function: STO (Safe Torque Off) via dedicated safety terminals – SIL 2 / PLd
- Encoder Interface: HTL/TTL incremental encoder input (optional via SMC)
- Supply Voltage: 24 V DC (via Power Module backplane)
- Ambient Temperature (Operation): -10 °C to +60 °C
- Storage Temperature: -40 °C to +70 °C
- Protection Class: IP20
- Dimensions (W × H × D): 73 mm × 149 mm × 54 mm
- Weight: Approx. 0.5 kg (unit only)
- Firmware: Compatible with STARTER / SINAMICS Startdrive (TIA Portal)
- Standards Compliance: CE, UL, cUL, RoHS
- Country of Origin: Germany
Proven Application Environments
- Conveyor and material handling systems with PROFIBUS network topology
- Pump and fan variable-speed drive control in water treatment and HVAC
- Compressor control in process industries (chemical, pharmaceutical, food & beverage)
- Crane and hoist applications requiring STO safety integration
- Textile and printing machinery with precise speed regulation
- OEM machine builders integrating SIMATIC S7-300/400/1200/1500 PLC platforms
Engineering Advantages
- Deterministic PROFIBUS DP Communication: Cyclic and acyclic data exchange with GSD file support for seamless PLC integration
- Integrated STO Safety: Eliminates external safety relays; reduces panel footprint and wiring complexity
- Modular Architecture: Hot-swap compatible with all SINAMICS G120 PM240/PM250/PM260 Power Modules
- BICO Parameterization: Flexible signal interconnection via Binector-Connector technology for custom control logic
- Operator Panel Ready: Compatible with BOP-2 and IOP-2 for local commissioning and diagnostics
- Memory Card Slot: SD card for parameter backup, cloning, and firmware updates
System Architecture & Signal Flow
The CU240E-2DP mounts directly onto the SINAMICS G120 Power Module via the backplane connector, forming a compact drive unit. The PROFIBUS DP interface connects to the PLC’s DP master (e.g., SIMATIC S7 CP or integrated DP port) using standard 9-pin Sub-D cabling. Digital and analog I/O terminals on the CU handle local setpoint inputs, feedback signals, and relay outputs for motor contactors or status indicators. The STO safety circuit connects directly to the CU’s F-DI terminals, enabling hardware-level safe torque removal without PLC intervention. Parameter data is stored on the integrated SD card slot, enabling rapid drive replacement and fleet-wide configuration management.
Sourcing & Quality Verification
- Origin: OEM Siemens production, Germany
- Condition: New / Surplus New (clearly stated per listing)
- Traceability: Original Siemens packaging with factory labels and date codes
- Inspection: Visual and functional pre-shipment inspection per Konmask QC protocol
- Certification: CE, UL markings verified; RoHS compliant
- Warranty: 12-month Konmask warranty against manufacturing defects
Procurement Process
- Submit RFQ or place order directly via Konmask.com product page
- Receive proforma invoice with lead time confirmation within 24 business hours
- Payment via T/T, PayPal, or approved credit terms for qualified accounts
- Shipment via DHL Express / FedEx International Priority with full tracking
- Export documentation: commercial invoice, packing list, COO certificate available on request
- Post-delivery technical support via [email protected]
Technical FAQ
Q: Is the 6SL3244-0BB12-1PA1 compatible with SINAMICS G120C?
A: No. The CU240E-2DP is designed exclusively for the modular SINAMICS G120 platform (PM240/PM250/PM260). The G120C is a compact integrated drive and uses a different architecture.
Q: What PROFIBUS DP baud rates are supported?
A: The CU240E-2DP supports all standard PROFIBUS DP baud rates from 9.6 kbit/s up to 12 Mbit/s, with automatic baud rate detection.
Q: Can the STO function be used without a safety PLC?
A: Yes. STO can be activated via hardwired 24 V DC signals on the F-DI terminals, independent of any PLC or fieldbus communication.
Q: Which Siemens engineering tool is required for commissioning?
A: The unit is supported by STARTER (standalone) and SINAMICS Startdrive within TIA Portal V14 and above. BOP-2 panel commissioning is also available for basic parameter setup.
Q: What is the difference between CU240E-2DP and CU240E-2DP-F?
A: The CU240E-2DP-F variant includes extended PROFIsafe functionality for certified safety communication over PROFIBUS. The standard CU240E-2DP provides STO via hardwired terminals only.
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