CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manuale Utente Scaricare il pdf (Pagina 6)

6 Specifications ar

e subject to change without notice EM2172D DS ENG 280708

EM21 72D

(x) = available

(o) = not available (zero indication on the display)

(1) = Variable available only through the serial communication port RS485

List of the variables that can be connected to:

Display pages

1st variable

half-line)

2nd variable

half-line)

3rd variable

(2nd line)

Note

Applications

A B C

Phase sequence

The phase sequence tringle appears in

any page only if there is a phase reverse

x x x

1 T

otal kWh

W sys x x x

2 Total kvarh kvar sys x x

3 PF sys Hz

Indication of C, -C, L, -L depending on

the quadrant

x x x

4 PF L1 PF

PF L3

Indication of C, -C, L, -L depending on

the quadrant

5 A L1 A L2 A L3 x

6 V L1-2 V L2-3 V L3-1 x

7 V L1 V L2 V L3 x

No Variable

-ph.

sys.

-ph.

sys.

3-ph. 4-wire

balanced

system

3-ph. 3-wir

balanced

system

3-ph. 4-wire

unbalanced

system

3-ph. 3-wir

unbalanced

system

Notes

1 kWh x x x x x x Total

2 k

varh

x x x x x x T

otal

3 V

L-N sys (1)

o x x x x x

sys=system (∑)

4 V L1 x x x x x x

5 V L2 o x x x x x

6 V L3 o o x x x x

7 V L-L sys (1) o x x x x x

sys=system (∑)

8 V L1-2 o x x x x x

9 V L2-3 o o x x x x

10 V L3-1 o o x x x x

11 A L1 x x x x x x

12 A L2 o x x x x x

13 A L3 o o x x x x

14 VA sys (1) x x x x x x

sys=system (∑)

15 VA L1 (1) x x x x x x

16 VA L2 (1) o x x x x x

17 VA L3 (1) o o x x x x

18 var sys x x x x x x

sys=system (∑)

19 var L1 (1) x x x x x x

20 var L2 (1) o x x x x x

21 var L3 (1) o o x x x x

22 W sys x x x x x x

sys=system (∑)

23 W L1 (1) x x x x x x

24 W L2 (1) o x x x x x

25 W L3 (1) o o x x x x

26 PF sys x x x x x x

sys=system (∑)

27 PF L1 x x x x x x

28 PF L2 o x x x x x

29 PF L3 o o x x x x

30 Hz x x x x x x

31 Phase sequence o o x x x x

•

RS485 communication port

•

Pulse outputs (only “energies”)

1 2 3 4 5 6 7 8 9 10

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CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manuale Utente Pagina 6

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