For more information about EMC, see chapter 2.5.18 EMC
Compliance and chapter 3.2 EMC, Harmonics and Ground
Leakage Protection.
NOTICE!
EMC INTERFERENCE
Run cables for input power, motor wiring and control
wiring in three separate metallic conduits. Failure to
isolate power, motor, and control cables can result in
unintended behavior or reduced performance. Minimum
200 mm (7.9 in) clearance between power, motor, and
control cables is required.
3.6 Mechanical Planning
3.6.1 Clearance
Side-by-side installation is suitable for all enclosure sizes,
except when an IP21/IP4X/TYPE 1 enclosure kit is used (see
chapter 3.7 Options and Accessories).
Horizontal clearance, IP20
IP20 A and B enclosure sizes can be arranged side-by-side
with no clearance. However, the correct mounting order is
important. Figure 3.23 shows how to mount correctly.
Figure 3.23 Correct Side-by-side Mounting with no Clearance
Horizontal clearance, IP21 enclosure kit
When the IP21 enclosure kit is used on enclosure sizes A1,
A2 or A3, ensure a clearance between the adjustable
frequency drives of minimum 50 mm (2 in).
Vertical clearance
For optimal cooling conditions, ensure vertical clearance
for free air passage above and below the adjustable
frequency drive. See Figure 3.24.
Enclosure size
A1*/A2/A3/A4/
A5/B1
B2/B3/B4/
C1/C3
C2/C4
a [mm (in)] 100 (3.94) 200 (7.87) 225 (8.86)
b [mm (in)] 100 (3.94) 200 (7.87) 225 (8.86)
Figure 3.24 Vertical Clearance
3.6.2
Wall Mounting
When mounting on a at wall, no backplate is required.
When mounting on an uneven wall, use a backplate to
ensure sucient cooling air over the heatsink. Use the
backplate with enclosures A4, A5, B1, B2, C1 and C2 only.
System Integration Design Guide
MG20N622 Danfoss A/S © 09/2014 All rights reserved. 67
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