KACO Powador-protect - Manual (Page 30)

Page 30
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8.4.2 Connecting the RS485 bus
NOTE
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To prevent interference during data transmission:
• Observe the wire twisted pairing when connecting
DATA+ and DATA- (see Figure 12)
• Do not install RS485 bus lines in the vicinity of live
DC/AC cables.
1. Connect the connection cable to the cor-
responding connection terminals.
2. Connect in this manner to all bus sub-
scribers
– Wire A (-) with wire A (-) and
– Wire B (+) with wire B (+).
Optional: Place screen of the connec-
tion cable on terminal GND.
3. If terminal unit: activate the terminating
resistor.
Figure 12: Wire
twisted-pair
connection
NOTE
When using compatible inverters, the RS485 cabling
can also be laid via the RJ45 socket to the underside
of the device. The connection terminals can also be
used together with the RJ45 socket, for example with
combined use of Powador-protect, inverters with RJ45
socket and proLOG.