Kaco Powador 2002 Operating Instructions Manual page 26

Installing the inverter
Authorised electrician
Connecting the fault signal relay
1. Unscrew the cable fi tting.
2. Thread the connection cables through the cable fi tting.
EN EN
3. Attach the connection cables to the connection terminals.
4. Tighten the cable fi tting.
7.4.2 Connecting the S0 output
An S0 pulse output is located on the communication board. Use this output to control accessories such as a large
display, for example. The pulse rate of the output is adjustable.
Connecting the S0 output
1. Unscrew the cable fi tting.
2. Thread the connection cables through the cable fi tting.
3. Attach the connection cables to the connection terminals.
4. Tighten the cable fi tting.
NOTE
Ensure that the wires are properly connected. Communication is not possible if the wires are
reversed.
7.4.3 Connecting the RS485 bus
NOTE
Ensure that the A and B wires are properly connected. Communication is not possible if the wires are
reversed.
7.4.3.1 Wiring diagram
Powador
Inverter
Terminal unit
Figure 25: RS485 interface wiring diagram
Properties of the RS485 data line
Maximum length of the RS485
bus line
Maximum number of
connected bus devices
Data line
Page 26
Powador Powador
Inverter Inverter
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.
31 inverters + 1 data monitoring unit
Twisted, shielded. Recommendations:
LI2YCYv (twisted pair) black for laying cable outside and in the ground, 2 x 2 x 0.5
LI2YCY (twisted pair) grey for dry and moist indoor spaces, 2 x 2 x 0.5
Powador
Communication
Data logger
230 V AC
Operating Instructions for Powador 2002-6002_EN