Siemens MICROMASTER 430 VFD 22kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD32-2DB0

Siemens MICROMASTER 430 VFD 22kW – High-Power Drive for Large Pump and Fan Systems

The Siemens MICROMASTER 430, model 6SE6430-2UD32-2DB0, delivers 22kW output power with 380-480V 3-phase input. This unfiltered variable torque drive is designed for large-scale pump and fan applications requiring high power output and continuous operation. Built with microprocessor control and IGBT technology, the MM430 series offers specialized pump/fan functions including multi-pump staging, energy monitoring, and dry run detection.

Key Specifications:
- Output Power: 22 kW (variable torque / square-law torque)
- Input Voltage: 380-480V AC 3-phase, +10/-10%, 47-63Hz
- Input Current: 43A
- Rated Output Current: 45A
- Output Frequency: 0-650Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +40°C
- Dimensions (HxWxD): 520mm × 275mm × 245mm
- Weight: Approx. 15kg
- Filter: Without built-in filter
- Frame Size: D

Typical Applications:
- Large industrial centrifugal pumps
- High-capacity exhaust and supply fans
- HVAC central plant chillers and air handlers
- Large cooling tower fans
- Industrial ventilation systems
- Municipal water/wastewater pump stations

Key Features:
- Built-in PID controller for closed-loop regulation
- Linear V/f control with Flux Current Control (FCC)
- 6 digital inputs, 2 analog inputs, 2 analog outputs, 3 relay outputs
- 15 fixed frequencies, 4 skip frequencies
- BiCo technology for flexible I/O configuration
- Integrated RS-485 Modbus RTU interface
- Optional PROFIBUS-DP communication module
- Flying restart for spinning motor capture
- DC injection braking
- Integrated PTC/KTY84 input for motor thermal protection

Pump & Fan Special Features:
- Multi-pump switching (staging up to 3 additional pumps)
- Bypass logic with automatic transfer
- Manual/Auto mode with switchover
- Dry well detection / belt break detection
- Energy saving mode with consumption monitoring
- Sleep mode for idle operation
- Pump staging logic for lead/lag arrangement

Energy Saving Benefits:
For centrifugal pumps and fans, power consumption follows the affinity laws (power ∝ speed³). Reducing operating speed by 20% can reduce power consumption by approximately 50%. The MM430's built-in energy saving mode and sleep function optimize operation based on actual system demand, delivering maximum energy efficiency for your application.

Selection Guide:
The 22kW model is the mid-range option in the D-size chassis (18.5kW-30kW). Choose 22kW when your pump or fan motor is rated 22kW (30 HP). For 18.5kW or 30kW requirements, select the corresponding models within the same D-size family. All D-size models share identical mounting dimensions, allowing easy power upgrades.

Important Notes:
- This product is discontinued. Available ONLY as a spare part
- DB0 suffix indicates unfiltered version
- A BOP or AOP is required for parameter configuration
- SINAMICS G120 series is the recommended successor for new designs

FAQ:

Q1: What is the maximum motor cable length for this 22kW model?
A: For shielded cable: up to 50 meters. For unshielded cable: up to 100 meters. For longer runs exceeding these lengths, an output reactor is recommended to protect the motor winding insulation.

Q2: Can this drive control multiple pumps in a system?
A: Yes. MM430 includes built-in multi-pump staging logic. Using the three relay outputs, it can sequence additional pumps (up to 3 total including the drive-controlled pump) based on system demand. This is ideal for pump stations with multiple pumps operating in lead/lag arrangement.

Q3: What is the input current requirement for this drive?
A: The input current is 43A at full load with 380-480V input. Ensure your supply circuit can handle this current. Branch circuit protection sizing should follow NEC or local electrical codes.

Q4: Does this model include a braking transistor?
A: No. MM430 series D-size unfiltered models (DB0 suffix) do not include a built-in braking transistor. External dynamic braking is not typically required for pump and fan applications due to the low inertia load profile.

Q5: Is there a filtered version available?
A: Yes. The filtered versions with built-in EMC filters are available with different suffixes:
- Class A filter (industrial environments): 6SE6430-2AD32-2DA0
- Class B filter (residential/commercial environments): 6SE6430-2CD32-2CA0

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

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