Introduction; Available Literature; Approvals; It Mains - Danfoss VLT HVAC Basic Drive Quick Manual

Quick Guide

1.2 Introduction

1.2.1 Available Literature

This quick guide contains the basic information necessary
for installing and running the frequency converter. If more
information is needed, literature can be found on the
enclosed cd or downloaded from:
http://www.danfoss.com/Products/Literature/Technical
+Documentation.htm

1.2.2 Approvals

1.2.3 IT Mains

CAUTION
IT Mains
Installation on isolated mains source, i.e. IT mains.
Max. supply voltage allowed when connected to mains:
440 V (3 x 380-480 V units).
On IP20 200-240 V 0.25-11 kW and 380-480 V IP20 0.37-22
kW, open the RFI switch by removing the screw on the
side of the frequency converter when at IT grid.
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Illustration 1.1 IP20 200-240 V 0.25-11 kW, IP20 0.37-22 kW
380-480 V.
1: EMC screw
VLT HVAC Basic Drive Quick Guide
Illustration 1.2 IP54 400 V 0.75-18.5 kW
1: EMC screw
On all units, set par. 14-50 RFI filter to OFF when operating
in IT mains.
If reinserted, only use M3 x 12 screw.

1.2.4 Avoid Unintended Start

While the frequency converter is connected to mains, the
motor can be started/stopped using digital commands, bus
commands, references or via the LCP.
®
MG18A302 - VLT is a registered Danfoss trademark
CAUTION
•
Disconnect the frequency converter from mains
whenever personal safety considerations make it
necessary to avoid unintended start of any
motors.
•
To avoid unintended start, always activate the
[OFF] key before changing parameters.
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