Flowserve NRS 1-50 For TWO Electrodes - Manual (Page 18)

8
Commissioning Procedure
Changing configuration
Danger
The terminal strips of the NRS -50 are live during operation.
This presents the danger of electric shock!
Always
cut off power supply to the equipment before mounting, removing or connecting
the terminal strips!
Basic Settings
Factory setting
Level Switch NRS 1-50
The level switch features the following factory set default values:
n
De-energizing delay: 3 sec., 5 sec. for marine applications.
n
Configuration: Operation with two level electordes NRG  ...-50. S/S of code switches 4 and 5
set to OFF.
Note
n
If only one level electrode is switched on, only the LEDs for power and alarm of the
corresponding channels will be illuminated.
If only one electrode is used for operation (e. g. in case of emergency operation) change the settings as
follows:
n
Switch off mains voltage.
n
Unscrew the right and left fixing screws 3 and remove the lower terminal strip 2 , Fig. 6
n
Depending on which electrode shall be deactivated, set S/S of code switches 4 and 5 to ON.
n
Attach lower terminal strip and fasten fixing screws.
n
Apply mains voltage, equipment is re-started.
Code switch 4 Code switch 5
S  S  S  S 
Level electrode  activated OFF OFF
Level electrode  deactivated ON ON
Level electrode  activated OFF OFF
Level electrode  deactivated ON ON
4
Toggle switch, white
5
Toggle switch, white