5.7 Connect functional earth
39
5 Startup
OZD Profi G12D... ATEX 1 V. 03 07/2014
Functional earth
S0 S1 S2 S3 S4 S5 S6 S7
System
CH1
CH2
CH3
CH3
CH2
24
V*
24
V
DI
B
DI
A
0V
0V
FG FG
DO
B
DO
A
CH
0V
F
NC
F
NO
CH
3
CH
2
F
9
4
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Ser.
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5.7 Connect functional earth
24
V*
24
V
DI
B
DI
A
0V
0V
FG FG
DO
B
DO
A
CH
0V
F
NC
F
NO
CH
3
CH
2
F
Fun
ct
i
o
n
a
l
ea
r
t
h
Fig. 24: Terminal block - connection of functional earth for
OZD Profi G12DU ATEX 1
Fig. 25: Connection of the functional earth for OZD Profi G12DK
ATEX 1
(OZD Profi ... DE ... : analog)
z
Warning!
Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.
The repeaters are equipped with connection for the func-
tional earth.
The functional earths are designed in the protection class
ex-e EN 60079-7:2007. It is placed on the front side of
the OZD Profi G12DU ATEX 1 on a separate single termi-
nal (FG). The terminal has a valid type approval certifi-
cate.
Note
: For OZD Profi … DK … and OZD Profi … DE …
the cables are lead on a terminal accessible from outside
(see fig 25).
Connect the cable for the functional earth for OZD
Profi … DK …to the terminal block (see fig 24), for
OZD Profi G12DK ATEX 1 and OZD Profi G12DU
ATEX 1 (see fig 25) to the terminal accessible from
outside.
Ensure adequate stress relief of the cables and note
its minimum bending radii.
