43
Connection of the meter to the charger
Step
Description
Picture
1
The external meter is connected to the
charger through an RS-485 bus.
The RS-485 terminal blocks can be
reached removing the charger cover
and then by removing the inner cover
which protects the supply terminal
blocks.
The RS-485 wires are connected to the
bus connector (terminal block) on the
charger, as presented in the picture
(boxed in red).
The RS-485 cables are inserted through
the same access path used for the
supply cables.
the power supply must be
disconnected in this phase
2
The RS-485 signals from the meter shall
be connected as in the picture
respectively for
•
RS-485 A
•
RS-485 B
These signals must be connected to the
terminals 24 and 25 of the meter
(please see the meter connection
scheme).
3
After the external meter is connected,
the charger must be closed again with
its covers. This is extremely important
for functional and, mainly, for safety
reasons.
Important:
the other loads have higher priority than the charger
