Instruction manual

12
INM4840-5 Nov 2007
12
4.8.3 DIN-rail mounting – with DIN-rail mounting kit
DMK01 & mounting plate VMPH16
DIN-rail mounting kits (type DMK01 or DMK04) are available for this
purpose. DMK01 contains 40 sets of the components shown in Figure
4.12, while DMK04 contains 4 sets of these components.
Fit backplane
Refer to figures 4.12 and 4.13.
a) Select a mounting screw (A).
b) Place a locking washer (B) and a plain washer (C) over it.
c) Insert the screw through a fixing hole on the baseplate.
d) Fit a spacer (D) and retain it with washer (E).
e) Repeat steps a) to e) for the other five (5) mounting holes.
f) Fit the mounting feet (F) onto the DIN-rail in roughly the correct
positions.
g) Offer up the baseplate to the mounting feet on the DIN rail,
locate the screws into the middle holes in the feet and secure
each in turn. Return to tighten each screw before finishing.
4.9 Backplanes – identification and
tagging
A rectangular area for identification is provided on each backplane
see Figure 4.11. In addition, tagging strips are available (TSK18)
for mounting over the backplane safe-area connections. Two areas
- marked ‘B’ in Figure 4.11 - are provided with threaded inserts for
attaching the tagging strip mounting posts.
Mount the tagging strip to the backplanes as follows:-
Attach each tagging strip mounting post (1) with two M3 x 12
mounting screws (2) and washers (3).
Attach colour coding labels (6) onto tag label (5).
Mark tag label (5) with tag references.
Slide tag label (5) into tag strip holder (4) and retain with plastic
retaining rivet (7).
Attach plastic retaining tie (8) with two plastic rivets (7).
Clip tag strip holder (4) onto mounting posts (1) by pushing
downwards.
4.10 Backplane earth rails
Optional earth rail kits are available (ERK18) - see Figure 4.15.
Cable screens from hazardous-area circuits or spare pairs from a
multicore cable can be connected to the terminals on the earth rails.
These are mounted on the backplane at the same height as the tops
of the module, close to the hazardous-area connectors. Earth rails are
attached using the following procedure:-
Locate the earth rail mounting positions - marked ‘C’ in Figure 4.11
- at each end of the backplane .
Attach each mounting post (1) with two M3 x 12 mounting screws
and washers (2).
Fit the earth terminals (3) onto the rail (4).
Insert the ends of the earth rail into the slots at the tops of the
mounting posts.
Finally, insert the plastic retaining rivets (5) into each end of the rail.
DIN-rail
mounting foot
(F)
T-section rail G-section rail
Locking washer (B)
Plain washer (C)
Backplane
Retaining Washer (E)
M4 spacer (D)
6 x 1/2 inch screw (A)
Figure 4.13 - T- or G-section DIN-rail mounting
6
4
1
2
3
4
1
8
9
7
B
4
5
Figure 4.14 - Tagging strip (TSK18)
3
5
1
1
4
2

c
Figure 4.15 - Earth rail kit (ERK18)
Figure 4.12 - DMK0x mounting kit components