Installing the inverter
Operating Instructions for Powador .-. TL_EN Page
EN
Authorised electrician
... Wiring diagram
Figure : RS interface wiring diagram
Key
1 Inverter, terminal unit 4 Communication
2 Inverter 5 230 VAC
3 Powador-proLOG
Properties of the RS485 data line
Maximum length of the RS485
bus line
The maximum allowed length of the RS485 bus is 1200 m.
This length can be reached only under optimum conditions.
Cable lengths exceeding 500m generally require a repeater or a hub.
Maximum number of
connected bus devices
inverters + datamonitoringunit
Data line Twisted, shielded. Recommendations:
LIYCYv (twisted pair) black for laying cable outside and in the ground, x x .
LIYCY (twisted pair) grey for dry and damp indoor spaces, x x .
Connecting the RS bus
" To prevent interference during data transmission:
• Observe the wire pairing when connecting DATA+ and DATA- (siehe FigureFigure
)
• Do not lay RS bus lines in the vicinity of live DC/AC cables.
. Unscrew the cable tting.
. Thread the connection cables through the cable tting.
. Connect the connection cables to the corresponding connection terminals (see
Figure on page ).
. The following must be connected to all inverters and to the data monitor unit
in the same way:
– Wire A (-) to wire A (-) and
– Wire B (+) to wire B (+) (see Figure on page )
. Tighten the cable tting.
. Activate the terminating resistor on the terminal unit.
Figure : Assignment of
twisted-pair wires
NOTE
When using the RS bus system, assign a unique address to every bus device (inverter, sensor) and
terminate the terminal units (see the “Settings” menu) .
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