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26 Commander SK Size 2 to 6 Getting Started Guide
www.controltechniques.com Issue Number: 2
For increased fan lifetime in a dirty environment the heatsink fan must be
replaced with an IP54 or IP55 fan.
Table 3-1 Fan part numbers
If the standard fan is used in a dirt/dusty environment, reduced fan
lifetime will result. Regular cleaning of the fan and heatsink is
recommended in this environment.
3.4.2 Commander SK size 5 and 6
When through hole mounted, the Commander SK size 5 and 6 are rated
to IP54 and/or NEMA 12 as standard.
Table 3-2 Environmental considerations
3.4.3 Through-panel mounting losses
When designing an IP54 and/or NEMA 12 cubicle, the losses from the
front of the drive must be taken into consideration.
Table 3-3 Through-panel mounting losses
Figure 3-21 Fitting of IP54 insert in Commander SK size 2
In order to remove the IP54 insert, repeat steps (1) (2) and (3), reverse
steps (5) and (4) and repeat step (6).
The IP54/55 fan can be fitted at the same time as the IP54 insert. The
connector on the existing fan should be unplugged from the power PCB.
The existing fan then unclips from the black housing and can be
removed. Once the new assembly is complete, the power lead of the
new IP5X fan can then be pushed back through the heatsink and the
grommet inserted in to the hole to ensure the correct seal is maintained.
The fan is then clipped into the housing ensuring the blades rotate freely
indicating that the fan is fitted in the correct orientation.
Frame size IP54 fan part number IP55 fan part number
2 3251-4824-00 3251-3824-00
3
3251-1224-00
4 3251-7824-00
Environment
IP54
Insert
Fan Comments
Clean Not fitted Standard
Dry and dusty
(non-conductive)
Fitted Standard
Regular cleaning
recommended. Fan
lifetime may be reduced.
Dry and dusty
(conductive)
Fitted
Standard/
IP54
Regular cleaning
recommended. Fan
lifetime may be reduced.
IP54 compliance Fitted IP54
Regular cleaning
recommended.
Frame size Power loss (W)
2 ≤75
3 ≤100
4 ≤204
5 ≤347
6 ≤480
Push plastic tabs in the
direction shown (1).
Push tab in the direction
shown (2), and lift hinged
baffle as shown (3).
Take IP54 insert from
the accessories box (4).
Lower the IP54 insert int
the ventilation hole in the
heatsink (5).
Close hinged baffle (6)
and click into position,
ensuring tabs locate
correctly.
2
3
5
4
6
1
1
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