Danfoss VLT AutomationDrive FC 301 Series Design Manual page 127

Electrical Installation
9.2.2 Entry Holes
1. Remove the cable entry from the adjustable
frequency drive (this prevents foreign parts from
falling into the adjustable frequency drive when
removing knockouts).
2. Cable entry has to be supported around the
knockout to be removed.
3. The knockout can now be removed with a strong
mandrel and a hammer.
4. Remove burrs from the hole.
5. Mount the cable entry on the adjustable
frequency drive.
The suggested use of the holes are recommendations, but
other solutions are possible. Unused cable entry holes can
be sealed with rubber grommets (for IP21).
Hole number and
recommended use
1) Line power
2) Motor
3) Brake/load sharing
4) Control cable
5) Control cable
Tolerance ± 0.2 mm
1)
Figure 9.1 A2 - IP21
MG33BF22
Design Guide
[4]
[5]
[1]
[3]
[2]
Dimensions 1) Nearest
metric
UL [in] [mm]
3/4 28.4 M25
3/4 28.4 M25
3/4 28.4 M25
1/2 22.5 M20
1/2 22.5 M20
Rev. 2014-04-04 All rights reserved.
Hole number and
recommended use
1) Line power
2) Motor
3) Brake/load sharing
4) Control cable
5) Control cable
6) Control cable
Tolerance ± 0.2 mm
1)
Figure 9.2 A3 - IP21
Hole number
Dimensions
and
recommended
UL [in]
use
1) Line power 3/4
2) Motor 3/4
3) Brake/load 3/4
sharing
4) Control 1/2
cable
5) Removed -
1) Tolerance ± 0.2 mm
Figure 9.3 A4 - IP55
[4]
[5]
[6]
[1]
[3]
[2]
Dimensions 1) Nearest
metric
UL [in] [mm]
3/4 28.4 M25
3/4 28.4 M25
3/4 28.4 M25
1/2 22.5 M20
1/2 22.5 M20
1/2 22.5 M20
[2]
[3]
[4]
[5]
[1]
1)
Nearest metric
[mm]
28.4 M25
28.4 M25
28.4 M25
22.5 M20
- -
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