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Affinity User Guide 53
Issue Number: 5 www.controltechniques.com
Figure 3-49 Option 3 for achieving IP54 (UL Type 12 / NEMA 12) through panel mounting
For increased fan lifetime in a dirty environment the heatsink fan must be
replaced with an IP54 rated fan. Contact the supplier of the drive for
details. If the standard fan is used in a dirty/dusty environment, reduced
fan lifetime will result. Regular cleaning of the fan and heatsink is
recommended in this environment. The heatsink fan installed in sizes 5
and 6 are IP54 rated as standard.
The guidelines in Table 3-7 should be followed.
Table 3-7 Environment considerations
A current derating must be applied to the size 1 and 2 if the IP54 insert
and/or IP54 rated fan are installed. Derating information is provided in
section 12.1.1 Power and current ratings (Derating for switching
frequency and temperature) on page 228.
Failure to do so may result in nuisance tripping.
When designing an IP54 (UL Type 12 / NEMA 12) enclosure (Figure 3-
44), consideration should be made to the dissipation from the front of the
drive.
Table 3-8 Power losses from the front of the drive when through-
panel mounted
Sealing
bracket
(4 places)
Enclosure
rear wall
Environment
IP54
Insert
Fan Comments
Clean
Not
installed
Standard
Dry, dusty (non-
conductive)
Installed Standard
Regular cleaning
recommended. Fan lifetime
may be reduced.
Dry, dusty
(conductive)
Installed
Standard /
IP54
Regular cleaning
recommended. Fan lifetime
may be reduced.
IP54 compliance Installed IP54
Regular cleaning
recommended.
Frame size Power loss
1 ≤50W
2 ≤75W
3 ≤100W
4 ≤204W
5 ≤347W
6 ≤480W
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