Description
The Siemens SINAMICS CU240E-2 PN (Part Number: 6SL3244-0BB12-1FA0 / 6SL3244-0BB12-1FA1) is an intelligent, high-performance Control Unit engineered for the modular SINAMICS G120 Variable Frequency Drive (VFD) platform. Designed to snap directly onto SINAMICS Power Modules (such as PM240 or PM240-2), this module serves as the main processing core responsible for motor speed algorithms, safety routines, and real-time network communications.
Featuring dual-port PROFINET real-time Ethernet interfaces, integrated Safe Torque Off (STO) safety functions, and a comprehensive set of digital and analog I/O channels, the CU240E-2 PN allows engineers and system integrators to achieve precise closed-loop motor control. It is widely used across Bangladesh’s textile, garment, pharmaceutical, food and beverage, and process industries to modernize machinery and reduce energy usage.
Key Features
- Integrated PROFINET Interface: Features two RJ45 ports supporting PROFINET communication for seamless connection to SIMATIC S7 PLCs and industrial Ethernet networks.
- Integrated Safety Function (STO): Built-in Safe Torque Off (STO) SIL 2 / PL d compliant safety circuit prevents unexpected motor restart without needing external safety contractors.
- Flexible I/O Connectivity: Equipped with 6 Digital Inputs, 3 Digital Outputs (relay/transistor), 2 Analog Inputs (0–10V, 0/4–20mA), and 2 Analog Outputs for field sensor and signal integration.
- USB & BOP-2 / IOP-2 Operator Support: Features a mini-USB port for easy PC commissioning via STARTER or Startdrive software, plus direct support for Basic and Intelligent Operator Panels.
- Integrated SD Card Slot: Supports standard SINAMICS SD cards for parameter cloning, fast drive swaps, and firmware updates without a PC.
Technical Advantages
- High Efficiency: Advanced Vector and V/f control algorithms optimize motor magnetizing current, significantly reducing overall electrical energy consumption.
- Durable Construction: Industrial-grade housing with coated printed circuit boards (conformal coating) protects internal electronics against harsh factory environments.
- Safety Protection: Built-in hardware STO safety circuit provides certified emergency torque shutdown while lowering external panel wiring complexity.
- Energy Saving: Integrated Eco Mode automatically adapts motor magnetic flux under partial load conditions to lower operating power draw.
- Easy Maintenance: Modular snap-on design allows instant module replacement without disconnecting field power cables, minimizing plant downtime.
Applications
- Industrial: Automated conveyor systems, packaging machines, industrial mixers, extruders, and material handling lines.
- Factory: Textile spinning frames, garment washing/dyeing machines, pharmaceutical batch processing, and printing presses in Bangladesh.
- Commercial: Large-scale commercial HVAC supply fans, chilled water circulation pumps, and cooling tower blowers.
- Project Installation: Retrofitting older fixed-speed motor starters, integrating centralized PROFINET automation architectures, and upgrading legacy G120 drives.
Why Choose This Product?
- Modular Engineering: Separate power module and control unit topology means you only replace the control board during upgrades, saving cost.
- Proven Reliability: Built to Siemens’ rigorous European quality standards to withstand continuous 24/7 industrial duty cycles.
- Seamless PLC Integration: Effortless drag-and-drop hardware configuration inside TIA Portal reduces software setup time for automation engineers.
- Local Sourcing & Value: Sourced with technical accuracy, local warranty options, and reliable nationwide delivery across Bangladesh via loopshop.com.bd.
Technical Specification Table
| Specification | Details |
| Model | SINAMICS CU240E-2 PN (6SL3244-0BB12-1FA0) |
| Brand | Siemens |
| Rated Power | Power loss typ. 0.50 A at 24 V DC (approx. 12 W) |
| Voltage | 24 V DC (External power supply or internal via Power Module) |
| Current | 0.50 A typical |
| Frequency | Not Applicable (DC Control Board / Fieldbus System) |
| Efficiency | High-efficiency vector control with integrated ECO Mode |
| Protection | IP20 (When mounted onto Power Module inside control panel) |
| Dimension | 73 mm (Width) x 199 mm (Height) x 46 mm (Depth) |
| Weight | Approx. 0.49 kg |
| Operating Temperature | -10 °C to +55 °C |
| Warranty | Standard Manufacturer Warranty |
Features List
✓ Dual-port PROFINET real-time Ethernet communication
✓ Integrated Safe Torque Off (STO) safety function (SIL 2 / PL d)
✓ 6 Digital Inputs, 3 Digital Outputs, 2 Analog Inputs, 2 Analog Outputs
✓ Mini-USB interface for fast PC software commissioning
✓ Conformal-coated PCBs for protection against ambient industrial dust
✓ SD card slot for fast parameter cloning and firmware management
Benefits For Customers
- Lower Energy Expenses: Optimized motor control and Eco Mode reduce electricity bills on continuous pump, fan, and conveyor applications.
- Reduces Machine Downtime: Modular snap-on design allows rapid control unit replacement without rewiring main power stages.
- Saves Panel Space & Wiring: Integrated STO safety circuit reduces the need for external safety relays and contractors.
- Suitable for Bangladesh Environment: Conformal-coated boards withstand high ambient humidity and temperature variations common in Bangladesh factories.
Installation & Maintenance Guide
Installation Requirements:
- Ensure all mains power to the G120 Power Module is isolated and wait 5 minutes for internal capacitors to discharge.
- Snap the CU240E-2 PN control unit vertically onto the mounting interface of the SINAMICS G120 Power Module until it clicks into place.
- Connect 24 V DC auxiliary control power if continuous network communications are required when main AC power is off.
- Plug shielded RJ45 PROFINET Ethernet cables into the PROFINET ports (Port 1 / Port 2).
- Terminate digital/analog I/O field cables using the removable screw terminals and secure cable shield grounding clamps.
Maintenance Tips:
- Regularly check network connectors and terminal block screws to ensure tight electrical connections under panel vibration.
- Ensure control panel ventilation and cooling fans function properly to keep ambient temperatures around the VFD below +55 °C.
- Save drive parameter sets onto an optional SINAMICS SD card or TIA Portal project for fast recovery during emergency swaps.
Safety Instructions:
- Installation, wiring, and commissioning must be carried out by qualified electrical or automation personnel.
- Do not touch terminal contacts or plug/unplug the Control Unit while main high-voltage power is applied to the Power Module.
- Ensure functional panel grounding (PE) is established to prevent electromagnetic interference (EMI) on PROFINET signal lines.
Frequently Asked Questions (FAQ)
Q: What is the price of Siemens SINAMICS CU240E-2 PN 6SL3244-0BB12-1FA0 in Bangladesh?
A: Prices vary depending on global import rates and local availability. Contact loopshop.com.bd or request an official quote for current BDT pricing.
Q: Where can I buy Siemens 6SL3244-0BB12-1FA0 in Bangladesh?
A: You can purchase authentic Siemens SINAMICS drive control units online from loopshop.com.bd with delivery across Dhaka, Chattogram, Gazipur, Narayanganj, and nationwide.
Q: What warranty does this product have?
A: loopshop.com.bd provides standard vendor/seller warranty coverage against manufacturing defects upon delivery.
Q: Is this suitable for Bangladesh climate?
A: Yes, it is equipped with conformal-coated circuit boards and rated for ambient temperatures up to +55 °C, making it suitable for factory panels across BD.
Q: How to install this product?
A: Power down the system, snap the CU240E-2 PN onto a compatible SINAMICS G120 Power Module, connect your PROFINET Ethernet cable and I/O terminals, restore power, and configure parameters via USB or Operator Panel.
Q: Which power modules are compatible with CU240E-2 PN?
A: The CU240E-2 PN is compatible with Siemens SINAMICS G120 series power modules, including PM240, PM240-2, PM230, and PM250.
Q: Does this control unit support Safe Torque Off (STO)?
A: Yes, it features an integrated STO safety function compliant with SIL 2 (EN 61508) and PL d (EN ISO 13849-1).
Q: What communication protocol does 6SL3244-0BB12-1FA0 use?
A: It uses PROFINET Ethernet communication with two RJ45 ports for line and ring network topologies.
Q: Which software is used to commission this SINAMICS control unit?
A: You can commission the drive using Siemens Startdrive in TIA Portal, STARTER software via USB, or directly using a BOP-2 / IOP-2 keypad.
Q: Does loopshop.com.bd supply authentic Siemens VFD components in BD?
A: Yes, loopshop.com.bd supplies genuine Siemens industrial drives and automation hardware through verified supply chains.

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