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Top Level Module Removal In...
1
1
12-pulse rectifier module
2
AUX fan (100, 101, 102, 103)
3
Line fuses
4
Mains input L11, L21, L31, L21, L22, L32
5
BC bus connections for common DC bus (DC+, DC-)
6
BC bus connections for common DC bus (DC+, DC-)
Table 7.1 12-pulse Rectifier Cabinet F10 - F13
High Power Service Manual for Modular F Frame Drives
7.2.2 DC Link Fuses
There are two DC link fuses for each inverter located on
top of the inverter.
2
3
1
2
3
4
5
7.2.3 Door Fans
4
®
MG90K202 - VLT
is a registered Danfoss trademark
1.
Remove covers from inverter cabinet to gain
access.
2.
Remove bus bars securing top of fuses by
removing attaching bolts (8mm).
3.
Remove bolts securing bottom of fuses (8mm).
2
1
3
4
5
Top (-)DC link fuse bus bar
(-)DC link fuse (none in 12-pulse models F8/F9)
Top (+)DC link fuse bus bar
(+)DC link fuse (none in 12-pulse models F8/F9)
Bottom (+)DC link fuse bus bar
1.
Disconnect the leads from the terminal strip on
the fan, noting the correct terminal that each
wire is connected to for reassembly.
2.
Remove the four (8 mm) mounting nuts from
each corner of the fan assembly.
3.
Remove fan assembly from mounting/filter
housing assembly in door.
4.
Reassemble in reverse order. Note that F-Frame
drives are designed for fan airflow into the
cabinets. For this reason, ensure that the fan is
installed with the printed arrow on the fan
pointing inward. Incorrect installation can cause
excess heating and an overtemperature fault.
Tighten nuts to 20 in/lbs (2.3 Nm).
7
7
105
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