GESTRA NRR 2-50, Руководство по установке

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11
In the control cabinet: Electrically connecting the level controller
Wiring diagram for level controller NRR 2-51
5
Supply voltage connection
24 V DC
with semi-delay fuse 0.5 A provided on site
6
Level electrode NRG 21-.. / NRG 26-21.
Max. 3 NRS/NRR 2-5.. devices can be connected (connection in parallel)
7
Level transmitter NRGT 26-1, 4-20 mA, with earthing point.
Max. 3 NRS/NRR 2-5.. devices can be connected (series connection)
8
Central earthing point (CEP) in control cabinet
9
MIN output contact, de-energizing delay 3 seconds
0
MAX output contact, de-energizing delay 3 seconds
a
Output 4-20 mA, manipulated variable Y
Key
5 7
6
NRR 2-51
Fig. 4
0.5 A
(semi-
delay)
a
MIN MAX
9 0
a
8
MAX MIN
0.5 A
(semi-
delay)
0 9
5
8
continued