Danfoss VLT series Service Manual

7-15
VLT is a registered Danfoss trademark
Figure 7-12. IGBT Modules (3 of 4)
11. Remove 6 retaining screws (T30) connecting each
IGBT module output to IGBT output bus bars.
12. Remove retaining nut (17 mm) connecting IGBT
output bus bar to IGBT over-fan bus bar. Note
that there is one for each of three phases.
13. Remove retaining nut (17 mm) or T50 Torx screw,
depending on unit type, connecting IGBT over-fan
bus bar to current sensor bus bar.
Output bus bar
Retaining screw
(Step 11)
Retaining nut
(Step 12)
Retaining nut
(Step 13)
Over-fan bus bar
Retaining nut
(Step 14)
14. Remove 3 retaining nuts (17 mm) at top and one
retaining nut (8 mm) at bottom attaching IGBT
output bus bar to standoffs. Remove IGBT output
bus bar.
CONTINUED NEXT PAGE
Retaining nut
(Step 14)

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)