Commissioning, Operation – Flowserve NRG 26-40 User Manual
Page 22
22
Turn on power for level switch NRS 2-40 / level controller NRR 2-40.
Commissioning
Check whether the level electrode NRG 26-40 and the corresponding system components NRS 2-40 /
NRR 2-40 have been wired according to wiring diagram
Fig. 11.
Check wiring
Apply mains voltage
Operation
Operation in conjunction with switching controller NRS 2-40 in (pressurised) hot water installations and
steam plants to TRD 40, TRD 602, TRD 604, EN 2952, EN 2953 or according to national regulations.
Level electrode with CAN bus
Note
■
To analyse and eliminate malfunctions refer to “Fault finding list for troubleshooting” on
pages 23 - 24.
If the liquid level changes considerably over a short period of time during operation, the attenuation
setting of the level signal should be modified. The default attenuation value set at our works is 9
seconds.
. Undo screws
E and remove housing cover G.
2. Write down the node ID and the baud rate. Pull out the CAN bus connector.
2. Set code switch S to ON, S 2 – S 7 to OFF.
S
S 2
S 3
S 4
S 5
S 6
S 7
ON
OFF
OFF
OFF
OFF
OFF
OFF
3. Use code switches S 8 – S 0 to set the attenuation value.
S 8
S 9
S 0
Attenuation [s]
OFF
OFF
OFF
3
ON
OFF
OFF
5
OFF
ON
OFF
7
ON
ON
OFF
9
OFF
OFF
ON
5
ON
OFF
ON
9
OFF
ON
ON
25
ON
ON
ON
29
Adjusting the attenuation of the level controller