Danfoss VLT Pocket Guide

VLT
®
Soft Starter Pocket Guide 19
To assist your service engineer, they require the following information:
Model and serial number of the soft starter•
Motor kW and FLC•
Main supply voltage and frequency•
Control voltage•
Application (e.g. pump, compressor)•
Time installed before failure•
Details of other soft starters on the supply bus. Are these failing?•
If the soft starter trips, details of the code and mode of operation•
The installation’s power and control schematic diagram •
Fault fi nding: What are the key questions?

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)