Introduction; Available Literature; It Mains; Avoid Unintended Start - Danfoss VLT Series Quick Manual

Quick Guide

1.2 Introduction

1.2.1 Available Literature

This Quick Guide contains basic information necessary for
installing and running the frequency converter. If more
information is needed, literature can be found on the
enclosed cd.

1.2.2 IT Mains

CAUTION
IT Mains
Installation on isolated mains source, i.e. IT mains.
Max. supply voltage allowed when connected to mains:
440 V (3x380-480 V units).
On 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.
1
Illustration 1.1 IP20 0.37-22 kW 380-480 V
1 EMC screw
Table 1.2 Legend to Illustration 1.1
On all units, set 14-50 RFI filter to Off when operating in IT
mains.
CAUTION
If reinserted, only use M3x12 screw.
®
VLT HVAC Basic Drive Cascade Controller Quick Guide

1.2.3 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 or LOP.

1.2.4 Disposal Instruction

Table 1.3

1.3 Installation

1.3.1 Before Starting Repair Work

1.
2.
3.
®
MG18F402 - VLT is a registered Danfoss trademark
•
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 press [Off/
Reset] before changing parameters.
Equipment containing electrical components
must not be disposed of together with domestic
waste.
It must be separately collected with electrical
and electronic waste according to local and
currently valid legislation.
Disconnect the frequency converter from mains
(and external DC supply, if present.)
Wait as stated in Table 1.1.
Remove motor cable
1 1
3