4.
•
-
-
-
-
-
•
•
•
•
1.
-
-
2.
3.
Set switches A53 and A54 to select the signal type (U = voltage, I = current).
Example
e
3
0
b
f1
4
6
.1
0
BUS TER.
OFF-ON
A53 A54
U- I U- I
1
2
N
O
1
2
N
O
1
2
N
O
1
2
N
O
Illustration 62: Location of Switches A53 and A54
5.12 Setting Up RS485 Serial Communication
5.12.1 RS485 Features
RS485 is a 2-wire bus interface compatible with multi-drop network topology. This interface contains the following features:
Ability to select from the following communication protocols:
FC, FC MC, FC option
Modbus RTU
Metasys N2
FLN
BACnet
Functions can be programmed remotely using the protocol software and RS485 connection or in
parameter group 8-** Commu-
nications and Options
.
Selecting a specific communication protocol changes various default parameter settings to match the specifications of the pro-
tocol, making more protocol-specific parameters available.
Option cards for the drive are available to provide more communication protocols. See the option card documentation for in-
stallation and operation instructions.
A switch (BUS TER) is provided on the control card for bus termination resistance.
5.12.2 Configuring RS485 Serial Communication
Procedure
Connect RS485 serial communication wiring to terminals (+) XD2.2 and (-) XD2.3.
- Use shielded serial communication cable.
- Properly ground the wiring. Refer to
.
Select the protocol type in
parameter 8-30 Protoco
l.
Select the drive address in
parameter 8-31 Address
.
AQ262139143212en-000301 / 130R0879 | 111
Danfoss A/S © 2021.10
Electrical Installation
VLT® AutomationDrive FC 302
Operating Guide
Содержание D9h
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