Product Description:

The 131Z8831 is an AC variable frequency drive produced by Danfoss for the VLT 2800 Low Voltage Drives series. As a compact member of the VLT product line, this unit converts fixed-frequency three-phase mains power into a modulated output that allows process equipment to match motor speed to real-time load demands. The drive is intended for general industrial automation, where regulating induction motor torque improves energy efficiency and reduces mechanical stress on pumps, fans, and conveyors.

The input section accepts mains power in the range of 380–480 V AC ±10% at 50/60 Hz, allowing the drive to operate on common low-voltage networks without tap changes. At the motor terminals, it can deliver a continuous mechanical output of 1.5 kW, which corresponds to 2.0 HP when expressed in imperial units. The enclosure carries an IP20 protection rating, so the drive must be installed inside a control panel that protects it from direct contact and airborne debris. To minimize conducted and radiated noise on the supply lines, an internal RFI filter meets EN 55011 Class A1. This filter helps the system comply with industrial electromagnetic compatibility limits without requiring external filtering hardware.

The mechanical layout uses a book-style format, allowing multiple drives to be installed side by side in shallow cabinets while maintaining front access to the terminals. Operators interact with the unit through a built-in display that supports Single Line Control Panel navigation for quick parameter changes and status checks. Power is supplied through a three-phase feed, and the standard configuration is equipped with brake circuitry for rapid motor deceleration when commanded by the control logic. A protective coating on the internal electronics guards the circuit boards against humidity and airborne contaminants. This protection supports operation in demanding process environments where exposure to moisture or chemical vapors may occur.