Connection Via Rs-485 Bus - Mennekes Amtron Xtra E Installation Manual

When connecting the tariff-switching signal to
an external voltage source, a note conforming
to national regulations must be attached (e.g. in
form of a sticker).
The activation of the tariff-switching signal is carried out in
the service interface.
The maximum available current for main tariff and off-peak
tariff is set in the MENNEKES Charge App.

5.6.4 Connection via RS-485 bus

If several devices are controlled via a higher-level backend
system e.g. chargecloud, the devices must be connected
via an RS-485 bus with a MENNEKES ACU. The bus cable
is connected to the HCC 3 via a supplied connector with
double connection.
To control multiple devices, the wiring must be
located in line bus topology.
MENNEKES recommends the following cables for
the RS-485 bus:
„ For installation in the ground: Siemens
PROFIBUS line, underground cable 6XV1830-
3FH10 (manufacturer EAN 4019169400428).
„ For installation without mechanical stress:
Siemens PROFIBUS line 6XV1830-0EH10
(manufacturer EAN 4019169400312).
When using the recommended cables, trouble
free operation at bus lengths up to 300 metres
can be expected.
Fig.: 15. Connection of the RS-485 bus
f Strip the bus line (3) of the previous ACU or SCU and
expose the shields.
f Connect shields from (3) to terminal C of the connector
with double connection (2).
f Connect single cores from (3) to terminals A and B
(example for Siemens Profibus cable: green wire to ter-
minal A, red wire to terminal B, gray wire to terminal C).
Terminal Description
A Bus signal A
B Bus signal B
C Reference level
f Connect the bus line of the following SCU (4) analo-
gously to (3).
f Insert the plug connector (2) into the corresponding
plug strip (5) on the HCC 3 (1).
f Connect to the previous or subsequent ACU or SCU in
the same way.
1
2 3
A B C
5
4
15
EN