Electrical Connection; Rs485 Bus; Downgrade Input - Mennekes Premium 3,7 Operating And Installation Manual

5.3 Electrical connection

5.3.1 RS485 bus

Two terminals for four separate wires and two shield sup-
ports are fitted for the purpose of connecting the BUS
cable.
3
Fig. 16: Terminals for RS-485 bus
Connect the RS485 bus:
f Strip the bus line and bare the shielding.
f Feed the BUS cable through the shield clamp 3.
f Secure the bus line with the shield terminal at the
height of the bare shield.
f Connect the single cores to terminals 1 and 2 (e.g. for
Siemens Profibus communication: green wire to termi-
nal 1, red wire to terminal 2).

5.3.2 Downgrade input

By using the downgrade input, it is possible to reduce the
grid connection current that is not available at its maximum
level under certain circumstances or at certain times.
For example, you can control the downgrade input by the
following criteria or systems:
„ Electricity rate
„ Time of the day
„ Load shedding
„ Manually
The downgrade input is only present in Smart*
(S) charging stations with integrated MENNEKES
2
1
ACU.
Requirements for the ACU:
„ ACU version v4. ACU v4 is installed as stan-
„ ACU Software v2.9 or higher. You can view
Controlling over the downgrade input requires a potential-
free switching contact that you must install externally. The
potential-free switching contact differs according to the
desired control system and could be, for example, a load
shedding relay or a timer. As soon as the potential-free
switching contact closes, the maximum grid connection
current decreases according to the configuration imple-
mented.
Note the installation manual of the MENNEKES ACU /

SCU for configuration.
dard in the Smart* (S) charging station as of
August 2016.
and update the software version in the web
interface.
EN
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