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Unidrive SPM User Guide
57
Issue Number: 3 www.controltechniques.com
It may be necessary to improve the rigidity of the through panel
mounting surface due to the larger distance between the top and bottom
mounting brackets and the need to maintain compression on the gasket.
When the drive is mounted, if the gap between the drive flange (which
the gasket rests on) and the rear wall of the enclosure is
≥
6mm at any
point around the drive then the following methods can be used to
compress the gasket further:
1. Use a thicker panel for the mounting wall of the enclosure through
which the drive is mounted.
2. Use an internal backplate to pull the rear wall of the enclosure up to
the drive gasket. See Figure 5-40 for details. (Nylon washers are
supplied in the standard drive kit for sealing off any nut and bolt
mountings that exit through the rear wall of the panel).
3. If an internal backplate is not available a separate clamp can be
used to simulate option 2. See Figure 5-41 on page 58. 4 off sealing
clamps are supplied in the drive kit box.
Figure 5-40 Option 2 for achieving IP54 (NEMA 12) through-panel mounting
50mm max
(1.97in max)
5mm
(0.2in)
253mm
(9.96in)
placed
centrally
along
length
817mm
(32.17in)
5mm
(0.2in)
817mm (32.17in)
Backplate
Enclosure
rear wall
A
B
A
B
1
2
3
4
5
6
M6
M8
6
5
4
3
2
1
Table 5-6 Description of fixings
Table 5-7 Quantity of nylon washers included in the kit boxes
Item
Description
Size
Quantity of M8 (A)
Quantity of M6 (B)
1
Bolt
All
4
4
2
Flat washer
3
Nylon washer (from kitbox)
4
Flat washer
5
Spring washer
6
Nut