WM Systems WM-E1S, Техническое описание и руководство пользователя

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2.9 Connecting the modem to the meter (Elster ® / HON ® Alpha meters)
Step #1: Remove the Elster
®
A1500 and A1700 Alpha meter’s communication module
plastic case by releasing the 2 screws from the top of the housing.
Step #2 : Connect to the meter using
the data connector.
Connect the RS485 ( „ 2b ” signed cable 2-
pin wire/sleeve ( brown and white wires)
to the meter’s RS485 input.
If the input has 4-pins, you can also
connect all four cables to the place
which is marked with “D” .
The picture shows the sleeve wire
connection, but the modem can also be
ordered with a “pigtail” connection.
Some meters are prepared to receive a
terminal block, in which case connect a
2- or 4-pin terminal block to the sleeves.
Wiring to Elster
®
/Honeywell
®
Alpha A1500/1700 meter
A
B
C