Danfoss VLT Design Guide

5.1.5 Lifting
Always lift the frequency converter in the dedicated lifting
eyes. For all D enclosures, use a bar to avoid bending the
lifting holes of the frequency converter.
Illustration 5.5 Recommended Lifting Method, Size D.
WARNING
The lifting bar must be able to handle the weight of the
frequency converter. See 5.1.2 Mechanical Dimensions for
the weight of the different frame sizes. Maximum diameter
for bar is 2.5 cm (1 inch). The angle from the top of the
drive to the lifting cable should be 60° or greater.
5.1.6 Safety Requirements of Mechanical
Installation
WARNING
Pay attention to the requirements that apply to integration
and field mounting kit. Observe the information in the list
to avoid serious injury or equipment damage, especially
when installing large units.
CAUTION
The frequency converter is cooled by means of air
circulation.
To protect the unit from overheating, it must be ensured
that the ambient temperature does not exceed the
maximum temperature stated for the frequency converter and
that the 24-hour average temperature is not exceeded.
Locate the maximum temperature and 24-hour average in
8.5.2 Derating for Ambient Temperature.
If the ambient temperature is in the range of 45 °C - 55 °C,
derating of the frequency converter will become relevant,
see 8.5.2 Derating for Ambient Temperature.
The service life of the frequency converter is reduced if
derating for ambient temperature is not taken into
account.
5.1.7 Field Mounting
IP 21/IP 4X top/TYPE 1 kits or IP 54/55 units are
recommended.
How to Install
VLT
®
Refrigeration Drive Design Guide
MG16G102 - VLT
®
is a registered Danfoss trademark 61
5
5

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)