INM831B Rev 4
2
Base of unit
Rail mounting position
Tooth
Retaining arm
Base moulding
Mounting clip
Surface mounting position
Figure 2
- Adjusting base clips for rail or surface-mounting
3.2.2
Mounting on a flat surface (figures 2 and 3)
Turn the unit upside down.
With a screwdriver, apply an anti-clockwise force against the
retaining arm of one of the base clips to release it from its recess.
Hold the arm in this position and slide the clip outwards.
Release the retaining arm to engage the tooth in the base moulding.
Adjust the position of the other two clips with a similar procedure.
Mount on any flat surface using three M4 bolts or screws (or other
suitable fasteners with a shank diameter of 4mm or less) through the
three clips according to the mounting centres shown in figure 3.
3.2.3
Mounting in an ENC8, ENC8-SS, ENC83 or
ENC83-SS enclosure (figure 4)
Remove the upper and/or lower undrilled gland plates and drill
suitable holes for the entry glands required. Possible hole
configurations are listed in the table.
Mount the unit on the internal T-section rail of the enclosure as
described in (1).
Mount the enclosure on any flat surface using four M8 bolts (or other
suitable fasteners with a shank diameter of 8mm or less) through the
four fixed lugs according to the mounting centres shown in figure 4.
Table 1 Recommended gland entries
Mounting
Removal
Twist screwdriver
to release clip
Side of unit
Centre mounting clip
Figure 1
- Rail-mounting and removal
80
130
Figure 3
- Mounting centres, surface mounting
Intrinsically
Safe System
TAKE CARE
x i
A
B
010
C D
010
155
160
Figure 4
- Enclosures and their dimensions
A
B
C
D
ENC8
331
306
203
306
ENC83
407
380
305
466
Entry size
(mm)
Recommended
maximum no.
of entries
Minimum distance
between centres
(mm)
16
13
40
20
9
45
25
6
50
32
4
64
40
3
80
