Danfoss VLT series Service Manual

8-6
VLT is a registered Danfoss trademark
Pin
No.
Schematic
Acronym
Function Description Reading Using a Digital
Volt Meter
29 GWP_T IGBT gate
signal, buffered,
W phase,
positive. Signal
originates
on Control Card.
2v/div 100us/div Run@10Hz
2.2 - 2.5 VDC
Equal on all phases
TP25-TP30
30 GWN_T IGBT gate
signal, buffered,
W phase,
negative. Signal
originates
on Control Card.
2v/div 100us/div Run@10Hz
2.2 - 2.5 VDC
Equal on all phases
TP25-TP30

Danfoss VLT series Specifications

General

Series	VLT
Category	DC Drives
Output Voltage	0-100% of input voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overtemperature, Short Circuit, Ground Fault
Communication Interfaces	Profibus, CANopen
Enclosure Rating	IP20, IP21, IP55, IP66
Cooling Method	Forced Air Cooling, Convection Cooling
Control Mode	Sensorless Vector, Closed Loop Vector
Ambient Temperature	-10°C to +50°C (14°F to 122°F)