Rs-485 Serial Communication - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Electrical Installation

4.8.7 RS-485 Serial Communication

Connect RS-485 serial communication wiring to terminals
(+)68 and (-)69.
•
Use screened serial communication cable
(recommended)
•
See 4.3 Grounding for proper grounding
61
68
69
Illustration 4.12 Serial Communication Wiring Diagram
For basic serial communication set-up, select the following:
1. Protocol type in 8-30 Protocol.
2. Frequency converter address in 8-31 Address.
3. Baud rate in 8-32 Baud Rate.
•
2 communication protocols are internal to the
frequency converter.
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 along with
making additional protocol-specific parameters
available
•
Option cards which install into the frequency
converter are available to provide additional
communication protocols. See the option-card
documentation for installation and operation
instructions
®
VLT AutomationDrive FC 301/302 Operating Instructions
+
RS-485
MG33AN02 - Rev. 2013-09-06
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