Siemens MICROMASTER 430 VFD 11kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD31-1CA0

Siemens MICROMASTER 430 VFD 11kW – Industrial Drive for Pump and Fan Applications

The Siemens MICROMASTER 430, model 6SE6430-2UD31-1CA0, delivers 11kW output power with 380-480V 3-phase input. This unfiltered variable torque drive is engineered for medium-power pump and fan applications where energy efficiency and process control are essential. The MM430 series combines microprocessor-controlled IGBT technology with specialized pump/fan software functions for optimal performance.

Key Specifications:
- Output Power: 11 kW (variable torque)
- Input Voltage: 380-480V AC 3-phase, 47-63Hz
- Rated Output Current: 26A
- Output Frequency: 0-600Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +50°C
- Dimensions (HxWxD): 245mm × 185mm × 195mm
- Weight: Approx. 5.7kg
- Filter: Without built-in filter

Typical Applications:
- Medium-capacity centrifugal pumps
- Industrial exhaust systems
- HVAC primary air handling units
- Cooling tower fan control
- Irrigation pump systems

Key Features:
- Built-in PID controller for closed-loop pressure/flow control
- Linear V/f control with Flux Current Control (FCC)
- 6 digital inputs, 2 analog inputs, 2 analog outputs, 3 relay outputs
- BiCo technology for flexible I/O configuration
- Integrated RS-485 Modbus RTU interface
- Optional PROFIBUS-DP and DeviceNet modules
- DC injection braking and compound braking
- Flying restart function

Pump & Fan Special Features:
- Multi-pump switching (staging up to 3 additional pumps via relay outputs)
- Bypass logic control
- Manual/Auto mode with switchover
- Dry well detection / belt break detection
- Energy consumption monitoring
- Sleep mode for energy saving

Selection Guide:
The 11kW model is the natural step up from the 7.5kW version within the same C-size chassis. Choose 11kW when your pump or fan is rated 11kW (15 HP) and the 7.5kW model is insufficient. All C-size models share the same 245×185×195mm dimensions, making cabinet layout consistent across power ratings.

Important Notes:
- This product is discontinued. Available ONLY as a spare part
- A BOP or AOP is required for parameter configuration beyond defaults
- For new projects, SINAMICS G120 series is the recommended successor

FAQ:

Q1: What is the difference between CA0 and DA0 suffixes?
A: Both indicate unfiltered versions in the MM430 series. The main difference is the frame size: CA0 models (7.5kW-15kW) use the compact C-size chassis (245×185×195mm). DA0/DB0 models (18.5kW-30kW) use the larger D-size chassis (520×275×245mm) with higher current ratings.

Q2: Can this drive be used for multi-pump systems?
A: Yes. MM430 has built-in multi-pump switching logic. Using the relay outputs, it can control up to 3 additional pumps in staging sequence, making it ideal for pump stations and booster systems.

Q3: What communication options are available?
A: Standard RS-485 Modbus RTU on terminal 14-15. Optional PROFIBUS DP module (6SE6400-1PB00-0AA0) and DeviceNet module (6SE6400-1DN00-0AA0) are available as accessories.

Q4: Does this drive include an operator panel?
A: No. This model ships without AOP/BOP. An operator panel is required for parameter changes beyond factory defaults. The Basic Operator Panel (6SE6400-0BP00-0AA1) or Advanced Operator Panel (6SE6400-0AP00-0AA1) can be ordered separately.

Q5: What is the power range of MM430 series?
A: MM430 covers 7.5kW to 250kW, specifically optimized for variable torque loads. It is one of Siemens' most popular solutions for pump and fan applications in industrial facilities.

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

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