Siemens MICROMASTER 430 VFD 7.5kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD27-5CA0

Siemens MICROMASTER 430 VFD 7.5kW – Variable Torque Drive for Pump and Fan Applications

The Siemens MICROMASTER 430, model 6SE6430-2UD27-5CA0, delivers 7.5kW output power with 380-480V 3-phase input. This unfiltered drive is specifically designed for variable torque loads, making it the ideal choice for pump and fan applications where energy efficiency is critical. The MM430 series is built with microprocessor control and state-of-the-art IGBT technology, offering reliable performance for continuous operation.

Key Specifications:
- Output Power: 7.5 kW (variable torque)
- Input Voltage: 380-480V AC 3-phase, 47-63Hz
- Input Current: 17.3A
- Rated Output Current: 19A
- Output Frequency: 0-600Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +50°C
- Storage Temperature: -40°C to +70°C
- Dimensions (HxWxD): 245mm × 185mm × 195mm
- Weight: 5.7kg
- Filter: Without built-in filter

Typical Applications:
- Centrifugal pumps and booster pumps
- Industrial exhaust fans and blowers
- HVAC air handling units
- Cooling tower fans
- Variable torque conveyor systems

Key Features:
- Built-in PID controller for pressure/flow regulation
- Linear V/f control with FCC (Flux Current Control)
- Multi-point V/f control
- Fast Current Limitation (FCL) for trip-free operation
- 6 digital inputs, 2 analog inputs, 2 analog outputs, 3 relay outputs
- 15 fixed frequencies, 4 skip frequencies
- BiCo (Binetor Connectivity) technology for flexible I/O configuration
- Integrated RS-485 interface (Modbus RTU)
- Optional PROFIBUS-DP module (6SE6400-1PB00-0AA0)
- DC injection braking and compound braking

Pump & Fan Special Features (Built-in):
- Multi-pump switching / pump staging control
- Bypass function
- Manual/Auto mode switchover
- Dry run / belt break detection
- Energy saving mode (energy consumption monitoring)
- Sleep mode for idle operation

Selection Guide:
The 6SE6430-2UD27-5CA0 is the entry-level model in the MM430 series. Choose 7.5kW when your pump or fan motor is rated 7.5kW at 380-480V. For applications requiring higher power, consider the 11kW or 15kW models within the same series. The unfiltered version (suffix CA0) is suitable for industrial environments where external EMC filtering can be implemented.

Important Notes:
- This product has been discontinued by Siemens and is available ONLY as a spare part
- A Basic Operator Panel (BOP) or Advanced Operator Panel (AOP) is required for parameter changes beyond factory defaults
- For new installations, Siemens recommends the SINAMICS G120 series as the successor

FAQ:

Q1: What is the difference between MICROMASTER 420 and 430?
A: MM430 is specifically designed for variable torque loads (pumps, fans) with built-in energy saving features. Compared to MM420, MM430 offers higher efficiency, more I/O (6 DI / 2 AI / 2 AO / 3 RO), manual/auto mode switching, and specialized pump/fan functions like multi-pump control and dry run detection. MM420 is designed for general constant torque applications.

Q2: What is the overload capacity of this drive?
A: 110% of rated output current for 60 seconds, and 140% for 3 seconds. This is specifically designed for pump and fan applications where starting torque requirements are moderate.

Q3: Do I need a separate EMC filter?
A: This is the unfiltered version (CA0 suffix). For industrial environments, external EMC filters are available as accessories. If you require built-in filtering, consider the filtered version (6SE6430-2AD27-5CA0 with Class A filter or -2CD27-5CA0 with Class B filter).

Q4: Can this drive be used for constant torque applications like conveyors?
A: While technically possible, MM430 is optimized for variable torque loads. For constant torque applications (conveyors, compressors, mixers), the MICROMASTER 420 or 440 series is more suitable.

Q5: Is this drive still in production?
A: No. MICROMASTER 430 series has been discontinued. The 6SE6430-2UD27-5CA0 is available ONLY as a spare part while stocks last. For new designs, Siemens recommends SINAMICS G120 series.

📦 Spare Part – Limited Stock | Tech Support | Please confirm availability before ordering
Contact us for pricing and availability.
 

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