Description
The Siemens Micromaster 440 (MM440) 6SE6440-2UD27-5CA1 is a heavy-duty 7.5kW (10HP) Variable Frequency Drive (VFD) designed for advanced motor control, dynamic responsiveness, and torque management of three-phase AC induction motors. Functioning as a high-precision frequency converter, it converts standard 3-phase utility AC power into adjustable frequency and voltage output, delivering precise motor regulation, high starting torque, and smooth acceleration/deceleration ramps.
In Bangladesh’s expanding industrial and manufacturing sectors, maintaining high productivity and protecting heavy machinery under fluctuating grid conditions is critical. The Micromaster 440 series meets these requirements by offering high overload capacity, advanced sensorless vector control, and an integrated dynamic braking chopper for rapid stopping cycles. Automation engineers, factory managers, and OEM machinery builders across Bangladesh rely on this drive for demanding process applications requiring continuous operational stability.
Key Features
- Advanced Sensorless Vector Control: Delivers precise torque and speed regulation across variable loading conditions, providing maximum starting torque even at low motor speeds.
- High Overload Capability: Built for heavy-duty industrial tasks, delivering up to 150% output current for 60 seconds and 200% for 3 seconds.
- Integrated Dynamic Braking Chopper: Features an internal braking chopper for direct connection of external braking resistors to support rapid dynamic deceleration.
- Comprehensive Flexible I/O: Equipped with 6 digital inputs, 2 analog inputs, 2 analog outputs, and 3 programmable relay outputs for versatile PLC and sensor integration.
- Multi-Protocol Fieldbus Support: Integrated RS485/USS interface with expansion capability for PROFIBUS DP, DeviceNet, and CANopen communication modules.
Technical Advantages
- High Energy Efficiency: Operates with high conversion efficiency and a 0.95 power factor, significantly reducing thermal dissipation inside control cabinets and cutting power costs.
- Durable Industrial Construction: Frame Size C enclosure with IP20 protection, engineered for heavy-duty industrial environments and continuous load cycles.
- Comprehensive Electrical Safeguards: Built-in safeguards against overvoltage, under-voltage, overcurrent, motor thermal overload (I²t / PTC interface), and earth faults.
- Substantial Energy Savings: Reduces electricity consumption by up to 30%–50% on variable torque loads (pumps and fans) compared to fixed-speed starters.
- Easy Parameterization & Diagnostics: Configurable using optional Basic Operator Panels (BOP), Advanced Operator Panels (AOP), or PC-based STARTER commissioning software.
Applications
- Industrial Manufacturing: Drives heavy conveyors, mixers, extruders, agitators, packaging machinery, and material handling systems.
- Textile & Garments Industry: Controls ring frames, spinning machines, stenters, dyeing vats, winders, and industrial washing systems across Bangladeshi textile mills.
- Heavy Machinery & Factory Utilities: Manages industrial air compressors, cranes, hoists, exhaust blowers, and booster pumps.
- Commercial HVAC & Building Utilities: Ideal for supply and exhaust blowers, cooling towers, and chilled water circulation pumps in large facilities.
- Project Installations: Perfect for municipal water schemes, effluent treatment plants (ETP), local OEM machine building, and panel fabrication projects across Bangladesh.
Why Choose This Product?
- Siemens World-Class Engineering: Manufactured by Siemens, a global leader in industrial automation technology, ensuring long service life and field reliability.
- Unmatched Dynamic Performance: High starting torque and fast transient speed response protect motor shafts, couplings, and mechanical equipment from stress.
- Cost-Effective System Integration: Integrated dynamic braking chopper and flexible software functionality eliminate the need for extra external panel components.
- Dedicated After-Sales Support: Supported with genuine product sourcing, technical expertise, and local customer service through loopshop.com.bd.
Technical Specification Table
| Specification |
Details |
| Model |
6SE6440-2UD27-5CA1 |
| Brand |
Siemens |
| Rated Power |
7.5 kW (10 HP) |
| Voltage |
380Vac – 480Vac (3-Phase / 3AC ±10%) |
| Current |
Rated Output: 19.0 A / Input: 23.1 A |
| Frequency |
Input: 47 – 63 Hz / Output: 0 – 550 Hz |
| Efficiency |
~0.96 (96%) |
| Protection |
IP20 (Overcurrent, Overvoltage, Under-voltage, Thermal Overload) |
| Dimension |
245 mm x 185 mm x 195 mm (H x W x D) |
| Weight |
5.50 kg |
| Operating Temperature |
-10°C to +50°C |
| Warranty |
Standard Supplier Warranty |
Features List
✓ High Overload capacity (150% for 60s, 200% for 3s) for heavy-duty starting
✓ Advanced sensorless vector control for high torque accuracy
✓ Built-in dynamic braking chopper for rapid dynamic stopping
✓ Flexible I/O layout with 6 digital inputs, 2 analog inputs, and 2 analog outputs
✓ RS485 communication with optional PROFIBUS DP expansion modules
✓ High operational efficiency with integrated motor thermal overload protection
Benefits For Customers
- Reduces Electricity Cost: Matches motor speed directly to actual load demand, eliminating wasted electricity at partial speeds.
- Improves Operational Reliability: Soft starting capabilities prevent line current surges and mechanical shocks to connected gearboxes and couplings.
- Saves Maintenance Cost: Extends mechanical equipment service life through smooth acceleration and deceleration ramps.
- Suitable for Bangladesh Environment: Operating range up to 50°C handles high ambient temperatures inside local factories effectively.
Installation & Maintenance Guide
Installation Requirements:
- Mount vertically on a flat, non-combustible surface inside a well-ventilated, dust-protected control cabinet.
- Maintain adequate free cooling clearance (top, bottom, and front) to allow unrestricted airflow through the cooling fans.
- Verify mains electrical supply matches 380V-480V 3-Phase specifications prior to making power connections.
- Earth the drive enclosure securely using a dedicated protective conductor to guarantee EMC compliance and operator safety.
Maintenance Tips:
- Periodically clear dust and debris from cooling fins using clean, dry compressed air to prevent thermal fault tripping.
- Inspect wire terminal connection screws for correct torque tightness during routine plant maintenance shutdowns.
- Keep control cabinet doors tightly closed and clean air intake filters regularly to prevent atmospheric contamination.
Safety Instructions:
- Disconnect main AC power input and wait at least 5 minutes for internal DC link capacitors to discharge completely prior to touching wiring.
- Electrical installation, parameter programming, and servicing must only be performed by qualified electrical engineers or technicians.
- Do not perform high-voltage megger or insulation resistance testing directly across drive power terminals.
Frequently Asked Questions (FAQ)
Q: What is the price of Siemens Micromaster 440 7.5kW VFD in Bangladesh?
A: The price of the Siemens Micromaster 440 6SE6440-2UD27-5CA1 7.5kW VFD in Bangladesh depends on current stock availability and import rates. Please check loopshop.com.bd or contact our sales team for updated pricing.
Q: Where can I buy original Siemens Micromaster 440 7.5kW VFD in Bangladesh?
A: You can purchase authentic Siemens Micromaster 440 series drives online directly at loopshop.com.bd with reliable delivery across Bangladesh.
Q: What warranty does this product have?
A: This product carries standard supplier warranty protection against production defects. Contact loopshop.com.bd customer service for specific warranty terms.
Q: Is this suitable for Bangladesh climate?
A: Yes, it is rated for operating temperatures from -10°C up to +50°C, making it well-suited for industrial plant environments in Bangladesh.
Q: How to install this product?
A: Mount the VFD vertically inside a cabinet, connect 3-phase AC input lines and motor output cables, earth the unit properly, and configure parameters using a BOP/AOP keypad or STARTER software.
Q: Does the 6SE6440-2UD27-5CA1 include a built-in dynamic braking chopper?
A: Yes, this model includes an internal dynamic braking chopper, allowing direct connection of an external braking resistor for rapid stopping.
Q: What is the rated output current of this 7.5kW Siemens VFD?
A: The 6SE6440-2UD27-5CA1 delivers a nominal rated output current of 19.0A under 380V-480V 3-phase operation.
Q: Can this drive handle high-torque starting loads?
A: Yes, it features a High Overload rating capable of delivering 150% current for 60 seconds and 200% for 3 seconds.
Q: Does this drive support PROFIBUS communication?
A: Yes, it supports PROFIBUS DP and DeviceNet communication protocols via optional plug-in fieldbus modules.
Q: What supply voltage is required for this Siemens drive?
A: It requires a standard 3-phase AC mains supply ranging between 380Vac and 480Vac (±10%) at 47 to 63 Hz.
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