Rs 485 Bus Connection; How To Connect A Pc To The Fc 300 - Danfoss FC 300 Design Manual

FC 300 Design Guide

RS 485 Bus Connection

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One or more adjustable frequency drives can be
connected to a control (or master) using the RS485
standardized interface. Terminal 68 is connected
to the P signal (TX+, RX+), while terminal 69 is
connected to the N signal (TX-, RX-).
If more than one adjustable frequency drive is
connected to a master, use parallel connections.
In order to avoid potential equalizing currents in the shield, ground the cable shield via
terminal 61, which is connected to the frame via an RC link.
Bus termination
The RS485 bus must be terminated by a resistor network at both ends. For this purpose,
set switch S801 on the control card to "ON".
For more information, see the paragraph Switches S201, S202, and S801.
NOTE
Communication protocol must be set to FC MC par. 8-30.

How to Connect a PC to the FC 300

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To control the adjustable frequency drive from a
PC, install the MCT 10 Setup Software.
The PC is connected via a standard (host/device)
USB cable, or via the RS-485 interface as
shown in the section Bus Connection in the
chapter How to Program.
118
How to Install
USB connection.
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