Danfoss VLT Pocket Guide

VLT
®
Soft Starter Pocket Guide 5
Soft starter selection requires information on the
intended application, the features required, and
the current rating of the associated motor.
For applications with extreme or unusual conditions, consult the
relevant Design Guide and/or your supplier.
For example:
High altitude installation (> 1000 m)•
High ambient temperatures (> 40˚ C)•
High and/or frequent operating overloads•
High start frequency•
Slip-ring motor operation•
Part speed operation•
Horizontal mounting of the starter•
Soft Starter Selection Guide

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)