Rs-485 Serial Communication - Danfoss VLT AutomationDrive FC 301 Instruction Manual

Electrical Installation

4.8.6 RS-485 Serial Communication

Connect RS-485 serial communication wiring to terminals
(+)68 and (-)69.
•
Use shielded serial communication cable
(recommended)
•
See chapter 4.3 Grounding for proper grounding.
61
68
69
Figure 4.12 Serial Communication Wiring Diagram
For basic serial communication set-up, select the following:
1. Protocol type in 8-30 Protocol.
2. Adjustable frequency drive address in
8-31 Address.
3. Baud rate in 8-32 Baud Rate.
•
Two communication protocols are internal to the
adjustable frequency drive.
Danfoss FC
Modbus RTU
•
Functions can be programmed remotely using
the protocol software and RS-485 connection or
in parameter group 8-** Communications and
Options.
•
Selecting a specific communication protocol
changes various default parameter settings to
match that protocol's specifications and makes
additional protocol-specific parameters available.
•
Option cards for the adjustable frequency drive
are available to provide additional communi-
cation protocols. See the option card
documentation for installation and operation
instructions.
MG33AP22
Instruction Manual
+
RS-485
Danfoss A/S © Rev. 09/2014 All rights reserved.
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