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In the plant: Wiring level electrode / level transmitter
Connecting level electrode, level transmitter
The level switch NRS 2-50 / NRS 2-51 is designed to be used with level electrodes NRG 21-.. and
NRG 26-21 as well as the level transmitter NRGT 26-1...
To connect the equipment use screened multi-core control cable with a min. conductor size 0.5 mm
2
,
e. g. LiYCY 4 x 0.5 mm
2
, max. length: 100 m.
Wire screen in accordance with the wiring diagram.
Attention
n
Follow the instructions given in the installation & operating manual for NRG 21-.. ,
NRG 26-21 and NRGT 26-1.. when putting the level electrode or the level transmitter
into operation.
n
Make sure that connecting cables leading to the equipment are segregated and run
separately from power cables.
n
The level transmitter must be separately connected to its own voltage supply.
Factory settings
Level switch NRS 2-50
n
De-energizing delay: 3 sec., factory set
n
Voltage input for connecting a level electrode
type NRG 21-.. or type NRG 26-21.
n
MAX switchpoint AL.Hi = 80 %
n
MIN switchpoint AL.Lo = 20 %
n
Calibration value CAL.P = 100 %
Code switch
c
: S1,S2,S3, S4 OFF
Level switch NRS 2-51
n
De-energizing delay: 3 sec., factory set
n
Voltage input for connecting a level electrode
type NRG 21-.. or type NRG 26-21.
n
MAX switchpoint AL.Hi = 80 %
n
MIN switchpoint AL.Lo = 20 %
n
Switchpoint SP.Lo = 40 %, pump ON (fill),
pump OFF (discharge)
n
Switchpoint SP.Hi = 60 %, pump OFF (fill),
pump ON (discharge)
n
Calibration value CAL.P = 100 %
n
Function “Fill control”
Code switch
a
: S1,S2,S3, S4 OFF
