Connection Diagrams - CARLO GAVAZZI EM111 Instrucciones De Instalacion Y Uso

Connections

Connection diagrams

N 1 2
F
L
N
Fig. 2
6
+
7
-
Rc
Vdc Out GND
Fig. 4
6
8
M+ M-
Fig. 6
Diagram
Single-phase system 315 mA fuse (F), if foreseen by local law.
Fig. 2
Fig. 3 Digital input. Open contact = tariff 1, closed contact = tariff 2.
Pulse output (two possible connections)
Vdc: external voltage (direct current)
Out: output contact (transistor PNP open collector)
Fig. 4
GND: ground output contact (transistor PNP open collector)
Open collector outputs: the load resistance (Rc) must be designed so that the closed contact current is
under 100 mA (V
RS485 Modbus with Master
Note: additional instruments with RS485 are connected in parallel. The serial output must only be
Fig. 5
terminated on the last network device connecting terminals A+ and T. For connections longer than
1000 m or networks with more than 160 instruments, use a signal repeater.
M-Bus with Master
Fig. 6
8021438 | EM111
6
+
7
-
Rc
Vdc GND
M-Bus
Master
6
PC
8
is equal to 1 V dc). DC voltage (V
on
3
4
Fig. 3
5
T
8
A-
6
B+
7
GND
Fig. 5
Out
Description
) must be less than or equal to 80 V.
off
Modbus
5
T
Master
8
A- A-
6
B+ B+
7
GND GND
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