CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manual de usuario Pagina 9

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Specifications are subject to change without notice EM2172D DS ENG 280708 9
EM21 72D
2-CT connection
2-ph, 3-wire
Fig. 9
(6A) System type selection: 2P
2-CT and 2-VT/PT connections
2-ph, 3-wire
Fig. 10
1-CT connection
1-ph, 2-wire
Fig. 11
(6A) System type selection: 1P
Static output wiring diagram
1-CT and 1-VT connections
1-ph, 2-wire
Fig. 12
(6A) System type selection: 1P
Wiring diagrams
VDC/AC supply
Opto-mosfet
VDC/AC
RS485 port
9
810
6
54
3
9
810
6
54
3
9
10
6
5
9
10
6
5
16
15
14
13
B+
A-
16
15
14
13
B+
A-
B+
A-
RS485 NOTE: additional devices pr
ovided with RS485 ar
e connected as per the pictur
e above. The termination of the serial
output is carried out only on the last instrument of the network, by means of a jumper between (B+) and (T).
RS485 port wiring diagram
17 18
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