Danfoss VLT series Service Manual

6-23
VLT is a registered Danfoss trademark
Figure 6-15. D2 IGBT Modules (2 of 3)
Retaining screws
(shown removed)
(Step 8)
IGBT bus bar assembly BB29
(Steps 7 & 10)
IGBT module
IGBT module
Retaining screws
(Step 11)
Intermediate IGBT output bus bar BB30
(Step 12)
7. Remove 4 (10mm) retaining nuts at top of IGBT
bus bar assy.
8. Remove 12 retaining screws (6 on each module)
on upper portion of IGBT modules. These screws
also attach the snubber capacitors to the IGBT
modules (see Figure 6-15, 1 of 3 for snubber
capacitor location). Remove the snubber
capacitors.
9. Remove 10mm retaining nut from IGBT bus bar
assy.
10. Remove IGBT bus bar assy.
Retaining nut
(Step 7)
Retaining nut
(Step 12)
11. At bottom end of IGBT module, remove 12
retaining screws (4 each for U, V, and W
intermediate IGBT output bus bars).
12. Remove retaining nut (8mm) from 3 intermediate
IGBT output bus bars. Remove intermediate IGBT
output bus bars.
CONTINUED ON NEXT PAGE
Retaining nut
(Step 9)
BB31
BB30

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)