Installation
26
Connect RS485/LAN
REFUsol 100K
982059/02
2020-11
4.11 Connect RS485/LAN
Fig. 25: Wiring of communication cables
✅
The cables are fed through the cable gland at the
bottom of ConnectionBox, and then connected to
the PowerUnits interfaces:
Fig. 26: Connection area: communication
1. Unscrew the union nut of the cable gland.
2. Insert the communication cable into the union nut of
the cable gland.
3. Push the communication cable through the rubber
seal until there is sufficient cable to the connectors.
4. Connect the communication cables. Make sure that
the cables are not mounted on tension.
5. Seal unused openings of the cable gland with the
supplied plugs.
6. Tighten the union nut of the cable gland hand-tight.
7. Check tightness and strain relief.
Notes:
∘
The maximum length for the Ethernet bus is 100 m
between each two inverters.
∘
The maximum total length for the RS485 bus is typ
-
ically up to 1 000 m.
L1
L2
L3
PEN
DC-
DC+
Digital Input / DRM 0
RS485 / LAN 1
RS485 / LAN 2
RS485 / LAN 1
RS485 / LAN 2
RS485 / LAN 1
RS485 / LAN 2
RS485 / LAN 1
RS485 / LAN 2
RS485 Ethernet
RJ45
RJ45
RJ45
Cable CAT 5e
Cable CAT 5e
On last inverter:
RS485 termination dongle
Art. No. 922025
On first inverter:
Connect to switch, gateway or datalogger.
(RS485/Ethernet splitter)
PowerUnit #1
L1
L2
L3
PEN
DC-
DC+
Digital Input / DRM 0
RS485 / LAN 1
RS485 / LAN 2
L1
L2
L3
PEN
DC-
DC+
Digital Input / DRM 0
RS485 / LAN 1
RS485 / LAN 2
PowerUnit #2
PowerUnit n
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