User’s Manual 7M
13
Figure 9
: Connection diagram of S0 output, impulse counter, M - bus and tariff clock
AUXILIARY CIRCUIT CONNECTION
For communication with outside world multiple manners are used:
•
IR communication module
(
option
) using MODBUS protocol.
It can be used for setting and testing the meter using USB adapter.
•
S01
,
2 output
module is used for counting number of pulses depending on consumed energy.
The S02 output can be programmed as alarm output.
•
RS485
(
option
) communication module is galvanic isolated from meter main circuit.
It enables setting the meter, data readout in the network and tariff setting.
•
M-BUS
(
option
) communication module is galvanic isolated from meter main circuit.
It enables setting the meter, data readout in the network and tariff setting.
•
NFC
(
option
) enables an easy setting and downloading meter data via mobile app.
•
Tariff input
(
option
) module is used to set active tariff.
•
LED
diode is used for indication of no-load condition and test output proportional to measured active energy.
It can be also switched to reactive energy for test purpose using IR communication or cap touch.
•
A capacitive touch button
enables access to switch between measurements and settings in the menu.
Table 3
: Survey of auxiliary circuit connection
PLEASE NOTE
Check markings on the side of the meter to check what modules are built in.
AUXILIARY TERMINAL
Pulse output (S01, S02)
+
–
Tariff input
~
~
M-bus (COM)
M+
M-
RS485 (COM)
A
*SC
B
*It is intended to be used for shielding for RS485
