13
Connection of level electrode
To connect the level electrode use screened multi-core control cable with a min. conductor size
0.5 mm
2
, e. g. LiYCY 5 x 0.5 mm
2
, max. length: 100 m.
Connect the screen
only once
to the central earthing point
(CEP) in the control cabinet
.
Electrical connection
NRG 10-52, NRG 16-52 - connecting the five-pole connector
Please observe the instructions given in the installation & operating manual for the
NRS 1-52, NRS 1-53, NRS 1-54 and NRS 1-55 or NRS 1-1, NRS 1-2, NRS 1-3 and
NRS 1-5.
Make sure that connecting cables leading to the level electrode are segregated and
run separately from power cables.
Check the connection of the screen to the central earthing point (CEP) in the control
cabinet.
Attention
1. Swing up the retaining bracket
j
and detach the upper part of the terminal box
o
from the level
electrode.
2. Undo screw
m
and press the contact block
l
out of the upper part of the terminal box
o
. Make
sure that you do not lose the sealing ring
n
.
3. Unscrew cable gland
r
.
4. Pull cable through cable gland
r
, ring
q
, gasket
p
and upper part of terminal box
o
.
5. Connect the terminals in the contact block
l
(Fig. 10)
according to
table “Functions” on page 9
.
6. Press the contact block
l
into the upper part of the terminal box
o
.
7. Insert screw
m
(with sealing ring
n
) into hole and tighten. In doing so the contact block
l
is fixed
to the upper part of the terminal box
o
.
8. Fasten the cable gland
r
.
9. Plug the upper part
o
into the lower part
k
of the terminal box and secure it in place by swinging
down the retaining bracket
j
.
Connecting terminals in contact block
Fig. 10
4
3
1
2
- continued -
