Product Overview:
The AEG AS-BADU-214 is an intelligent pump controller from the AEG BADU product line. It provides variable speed control for single-phase and three-phase pump motors with integrated protection, PID control, and communication capabilities.

Technical Specifications:

• Rated Motor Power: Up to 2.2 kW (3 HP), single-phase or three-phase
• Input Voltage: 1 x 230 V AC (single-phase) or 3 x 400 V AC (three-phase), 50/60 Hz
• Output Frequency: 0 – 400 Hz (adjustable)
• Output Voltage: 0 – 230 V AC (V/F control)
• Control Mode: V/F, Sensorless Vector, PID (built-in)
• Protection Functions: Overcurrent, Overvoltage, Undervoltage, Overtemperature, Dry-run, Phase loss
• Communication: Modbus RTU (RS-485), 2 digital inputs, 1 relay output, 1 analog output (4–20 mA)
• Supply Voltage: 230 V AC ± 15%
• Power Consumption (control circuit): < 10 W
• Operating Temperature: -10°C to +50°C (no derating to 40°C)
• Protection Rating: IP20 (requires IP54 enclosure for outdoor use)
• Dimensions: 160 mm x 120 mm x 80 mm
• Weight: 1.2 kg

Material Composition:

• Enclosure: Flame-retardant ABS plastic (UL94 V-0), light grey
• PCB: FR-4, 2-layer, conformal coated
• Power Section: IGBT module (Infineon FF300R12KT4 or equivalent)
• Heatsink: Aluminum extrusion, 6063-T5
• Connectors: Screw terminals, 4 mm² capacity

Structural Features:

• Wall-mount or DIN rail mount
• Built-in EMI filter (EN 61800-3 compliant)
• Potentiometer for local speed setting
• LED display for parameter monitoring (4-digit, 7-segment)
• Keypad interface (5 buttons) for parameter programming

Working Principle:
AC mains is rectified to DC via a diode bridge and filtered to a 310 V DC bus. The IGBT inverter (PWM, 8 kHz switching frequency) converts DC back to variable-frequency AC for the motor. The microcontroller (STM32F103 or equivalent) implements V/F or sensorless vector control algorithms. The built-in PID controller adjusts motor speed based on the 4–20 mA feedback signal to maintain constant pressure or flow.

Key Advantages:

• Built-in PID controller eliminates need for external PLC
• Dry-run protection prevents pump damage
• Modbus RTU for SCADA integration
• Compact design fits in small enclosures

Applicable Industries:
Water supply and distribution, boiler feed systems, HVAC circulation, irrigation, fire suppression systems.

Installation Requirements:

• Install in IP54-rated enclosure for outdoor/wet locations
• Connect motor cable with maximum length 50 m (unshielded) or 100 m (shielded)
• Ground motor frame and drive chassis to PE
• Set carrier frequency to 4 kHz if motor noise is an issue

Usage Precautions:

• Perform auto-tuning before first operation
• Set acceleration/deceleration ramps appropriate for pump system (typically 5–30 s)
• Do not operate without motor connected (open-loop protection active)
• Check fan operation if ambient exceeds 40°C