GESTRA NRG 211-1, Оригинальная инструкция по установке

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13
Electrical connection
NRV 2-30, wiring connecting terminals
1. Turn up the retaining bracket
e
and detach the upper part of the connector
i
from the level
electrode.
2. Unscrew screw
j
and press the contact block
k
out of the upper part of the connector
i
.
3. Loosen cable gland
h
.
4. Pull cable
g
through cable gland
h
, ring, joint ring and upper part of connector
i
.
5. Wire connecting terminals in the contact block
k
according to Fig. 5 .
6. Press the contact block
l
into the upper part of the connector
i
.
7. Re-insert screw
j
in the hole and tighten it. In doing so the contact block
k
is fixed to the upper
part of the connector
i
.
8. Fasten the cable gland
h
.
9. Plug the upper part of the connector
i
into the lower part
f
and secure it in place by turning
down the retaining bracket
e
.
e
Retaining bracket
f
Lower part of connector
g
Cable
h
Cable gland
i
Upper part of the connector
j
Screw
Key
k
Contact block
l
Supply voltage 12 V DC
m
Measuring voltage 1 – 10 V DC
n
Fixing screws for electronic module
o
Terminal lugs
p
Connection for temperature sensor
Commissioning procedure
Note
The level electrode NRG 211-1 and the level switch NRS 2-4 (MAX) form a functional unit
and must only be operated and checked together.
For additional information on commissioning procedures and troubleshooting refer to the
installation manual of the level switch NRS 2-4.
Please check that the level electrode is wired in accordance with the wiring diagram (
Fig. 5)
and
switch on the supply voltage of the level switch NRS 2-4.
Applying supply voltage
Check the switching function "High level" (MAX). For this purpose raise the water level in the tank
above the preset high level. The LED of the level switch NRS 2-4 that indicates "High level" (MAX) must
light up and the corresponding function in the secondary circuit must be triggered.
Checking switching functions
q
For resistance measurement
Temperature sensor
(for measurement remove
conductors)
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