The Danfoss VLT® Micro Drive – an overview
The VLT® Micro Drive comes with range of safety measures. Firstly, the printed circuit board is coated as standard for harsher environments, and protected well within the drive. Also, the forced ventilation is kept away from the electronics in order to allow for the minimum penetration of dust. An in-built RFI filter allows for 15m screened cables to limit radio disturbance, to EU norms. Also, a brake chopper is installed in the drives from 1.5 kW upwards, and a built-in AC and DC brake function allows the VLT® Micro Drive to transform kinetic energy into braking power, to slow the motor down. The compact “book” style design of the VLT® Micro Drive also allows real side-by-side mounting, without derating, saving space.
Despite its compact size, the VLT® Micro Drive has terminal numbers named in exactly the same manner as the larger drives within the rest of the VLT® family. This model can be set up to perform across a range of complex application scenarios. Extremely reliable, and a genuine VLT® frequency converter, the VLT® Micro Drive offers unsurpassed user-friendliness and condensed functionality.
Options and Adaptability
With the VLT® Micro Drive, you can set around 100 parameters, to optimise operation and energy efficiency.
A wide selection of accessories suit any needs, including a DIN rail mounting kit, a decoupling plate kit and an IP21 / NEMA 1 kit.
Features and benefits
The VLT® Micro Drive comes with a rage of options, from 1 x 200–240 V AC 0.18–2.2 kW up to 3 x 380–480 V AC 0.37–22.0 kW. The display can come with or without potentiometer. Output frequency ranges from 0–200 Hz (VVC+ mode) and 0–400 Hz (U/f mode), with a 0.05–3600 sec ramp time. The drive features a range of programmable digital and pulse inputs – for instance PNP or NPN, voltage level, 0-24V, 20-5000 Hz, and one of the digital inputs can be used for pulse inputs.