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

Commissioning Procedure

Changing conﬁguration

Danger

The terminal strips of the NRS 1-50 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., 15 sec. for marine applications.

n Conﬁguration: Operation with two level electordes NRG 1 ...-50. S1/S2 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 S1/S2 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

S 1 S 2 S 1 S 2

Level electrode 1 activated

OFF OFF

Level electrode 1 deactivated

ON ON

Level electrode 2 activated

OFF OFF

Level electrode 2 deactivated

ON ON

Toggle switch, white

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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Flowserve NRS 1-50 For TWO Electrodes User Manual Page 18