Technical data

Chapter 2 – Installation
2-6 RS485 and RS232 Adapter Installation and Start-up Guide
Installation to RS485 Bus
1 Make sure power is not connected to the ACS 160.
2 Set the adapter switches:
• Confirm that the operation mode is RS485 (jumper S3)
• Set communication speed of the adapter with DIP switch S2
• If the termination is not needed, use switch S1 to disable it.
3 Mount the adapter on the side of the ACS 160. Leave the drive connection
cable disconnected.
4 Wire the adapter to the RS485 network (X1 and X2).
5 Connect the control panel to the drive.
6 Connect power to ACS 160.
7 Set up communication: Station number, communication speed of the drive
and parity. Refer to Chapter 3 – Programming.
8 Set up other drive parameters as needed. Refer to ACS 160 User’s Manual
and Chapter 3 of this manual.
9 Disconnect power from the ACS 160.
10 Disconnect control panel and connect drive connection cable of the adapter.
Wiring
The RS485 link is a daisy-chained bus, without dropout lines. The RS485 link
should also be terminated on both physical ends of the wire to reduce the noise
on the network.
Modbus network should be wired using Belden 9841 or equivalent. Belden
9841 is a single twisted shielded pair cable with a wave impedance of 120
9.
The network should be connected according to Figure 2-6 below.
Figure 2-6 RS485 wiring.
1 2 3 4 5
1 2 3 4 5