Safe Torque Off (Sto); Rs-485 Serial Communication - Danfoss VLT AQUA FC 202 Operating Instructions Manual

Electrical Installation

4.8.5 Safe Torque Off (STO)

STO is an option. To run STO, additional wiring for the
frequency converter is required. Refer to VLT
Converters Safe Torque Off Operating Instructions for further
information.

4.8.6 RS-485 Serial Communication

Connect RS-485 serial communication wiring to terminals
(+)68 and (-)69.
•
Use screened serial communication cable
(recommended).
•
See chapter 4.3 Grounding for proper grounding.
61
68
69
Illustration 4.11 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 and makes
additional protocol-specific parameters available.
•
Option cards for the frequency converter are
available to provide additional communication
protocols. See the option card documentation for
installation and operation instructions.
MG20MB02
Operating Instructions
®
Frequency
+
RS-485
Danfoss A/S © Rev. 05/2014 All rights reserved.
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