2
Apply mains voltage to level switch NRS -8.
Commissioning
Check whether the NRG …-2 and the associated controller NRS -8 are wired in accordance with
the wiring diagram.
Fig. 18, Fig. 20
Checking electrical connection
Applying mains voltage
Electrical Connection
– continued –
Tools
n
Screwdriver for cross-recess head screws, size
n
Screwdriver for slotted screws, size 2.5, completely insulated according to DIN VDE 0680-
n
Open-end spanner A. F. 8 (9)
Voltage table
Use this voltage table as a reference when checking whether the level electrode is submerged or if
there is a malfunction. Please take the wiring diagram of the electrode NRS -8 into account.
Fig. 18, Fig. 20
Note
n
The self-checking routine of the amplifier NRS -8 reduces
U
-2
every 40 seconds to
0 volt!
U
-2
2 V
eff
C=0.3 cm
-
0 µS/cm
0.5 µS/cm
U
-2
0 V
eff
C=0.3 cm
-
