Entry Holes - Danfoss VLT AutomationDrive FC 301 Design Manual

Electrical Installation

9.2.2 Entry Holes

1. Remove cable entry from the frequency converter
(Avoiding foreign parts falling into the frequency
converter 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 cable entry on frequency converter.
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).
9 9
Hole number and
recommended use
1) Mains
2) Motor
3) Brake/load sharing
4) Control cable
5) Control cable
1) Tolerance ± 0.2 mm
Illustration 9.1 A2 - IP21
114
®
VLT AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
[4]
[5]
[1]
[3]
[2]
1)
Dimensions 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
MG33BF02 - Rev. 2013-12-20
Hole number and
recommended use
1) Mains
2) Motor
3) Brake/load sharing
4) Control cable
5) Control cable
6) Control cable
1) Tolerance ± 0.2 mm
Illustration 9.2 A3 - IP21
Hole number
Dimensions
and
UL [in]
recommended
use
1) Mains 3/4
2) Motor 3/4
3) Brake/load 3/4
sharing
4) Control 1/2
cable
5) Removed -
1) Tolerance ± 0.2 mm
Illustration 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)
[mm]
Nearest metric
28.4 M25
28.4 M25
28.4 M25
22.5 M20
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