KACO Powador 16.0 TR3 - Manual (Page 25)

I n s t a l l i n g t h e I n v e r t e r
Page 26 Operating Instructions Powador 16.0 TR3, 18.0 TR3_EN
Authorised electrician
7.3.5 Connecting the RS485 bus
NOTICE
Ensure that the A and B wires are properly connected. Communication is not possible if the wires are
reversed.
7.3.5.1 Wiring diagram
Fig. 11: RS485 interface wiring diagram
NOTICE
Various manufacturers interpret the standard on which the RS485 protocol is based in diff ering ways.
Note that the wire designations (- and +) for wires A and B can vary between manufacturers.
NOTICE
Calculating effi ciency by measuring the current and voltage values leads to unusable results due to
the tolerances of the measurement devices. The sole purpose of these measured values is to monitor
the basic operation of the system.
Connecting the RS485 bus
 Maximum length of the RS485 wiring: 1,200 m under optimal conditions.
 Maximum number of connected bus devices: 31 inverters + 1 data monitoring unit.
 Use shielded twisted data lines.
Recommendation (using wire sleeves)
– LI2YCYv (TP) black for laying cable outside and in the ground 2 x 2 x 0.5
– LI2YCY (TP) grey for dry and moist indoor spaces 2 x 2 x 0.5
1. Unscrew the cable fi tting (see fi gure 10 on page 24).
2. Thread the connection cable through the cable fi tting.
3. Connect the connection cable to the connection terminals provided (see fi gure 10 on page 24).
4. Connect the following to all inverters and Powador-proLOG as follows:
– Wire A (-) with wire A (-) and
– Wire B (+) with wire B (+) (see fi gure 11 on page 26)
5. Tighten the cable fi tting.
6. Activate the terminating resistor on the terminal unit.
NOTICE
When using the RS485 bus system, assign a unique address to every bus device (inverter, sensor) and
terminate the terminal units (see the “Settings” menu) .
Powador
Inverter
Terminal unit
Powador
Inverter
Powador
Inverter
Powador
proLOG
Communication
230 V AC