he Woodward APM-582 is a compact, high-performance Adjustable Frequency Drive (AFD) / Variable Frequency Drive (VFD) designed to provide precise speed and torque control for AC induction motors.
1. Primary Function:
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It converts the fixed frequency and voltage of the incoming AC power (100-220V, 50/60 Hz) into a variable frequency and voltage output. This allows for seamless control of motor speed, enabling soft starts, speed regulation, and energy savings in various applications.
2. Key Features & Specifications (Inferred from Series Standard):
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Input Power Range: The 100-220V AC rating means it can automatically adapt to common single-phase power supplies worldwide (e.g., 110V, 120V, 220V, 230V). This makes it highly versatile for different electrical infrastructures.
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Output Power: Typically, for this voltage class, the APM series covers a range from fractional horsepower (HP) up to several HP. The exact horsepower/kilowatt rating is defined by the full part number (8272-582).
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Control Method: Utilizes advanced Sensorless Vector Control or V/Hz Control to provide high starting torque and good speed regulation without requiring a feedback encoder on the motor (though it may support optional feedback).
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Integrated Features:
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Soft Start / Stop: Eliminates high inrush current, reducing mechanical stress on motors, couplings, and driven equipment.
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Protection: Includes comprehensive safeguards for the motor and drive itself: Overcurrent, Overvoltage, Undervoltage, Short Circuit, Overheating, and Phase Loss.
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Programmable I/O: Typically includes digital inputs (for start/stop, speed references), relay outputs (for fault or status), and analog inputs (for 0-10V or 4-20mA speed reference).
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User Interface: Features a built-in keypad and display for local programming, monitoring parameters (speed, current, frequency, voltage), and fault diagnostics.
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Heat Management: Designed with an integrated heatsink, often suitable for chassis mounting in an electrical enclosure.
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3. Typical Applications:
This drive is ideal for controlling small to mid-sized AC motors in industrial, commercial, and infrastructure settings, such as:
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Pump Control (Water, wastewater, chemical dosing)
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Fan & Blower Control (HVAC systems, exhaust fans)
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Conveyor Systems
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Mixers and Agitators
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Compressors (smaller units)
