Voltage/Current Input Selection (Switches); Rs485 Serial Communication - Danfoss VLT Aqua Drive FC 202 Operating Manual

Electrical Installation
4.8.4 Voltage/Current Input Selection
(Switches)
The analog input terminals 53 and 54 allow setting of
input signal to voltage (0–10 V) or current (0/4–20 mA).
Default parameter setting
•
Terminal 53: Speed reference signal in open loop
4 4
(see parameter 16-61 Terminal 53 Switch Setting).
•
Terminal 54: Feedback signal in closed loop (see
parameter 16-63 Terminal 54 Switch Setting).
NOTICE
Disconnect power to the frequency converter before
changing switch positions.
1. Remove the LCP (see Illustration 4.11).
2. Remove any optional equipment covering the
switches.
3. Set switches A53 and A54 to select the signal
type. U selects voltage, I selects current.
Illustration 4.11 Location of Terminal 53 and 54 Switches
To run STO, more wiring for the frequency converter is
required. Refer to VLT
Operating Guide for further information.
22
®
VLT AQUA Drive FC 202
®
Frequency Converters Safe Torque Off
Danfoss A/S © 10/2016 All rights reserved.

4.8.5 RS485 Serial Communication

Connect RS485 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
Illustration 4.12 Serial Communication Wiring Diagram
For basic serial communication set-up, select the following:
1. Protocol type in parameter 8-30 Protocol.
2. Frequency converter address in
parameter 8-31 Address.
3. Baud rate in parameter 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 RS485 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
more protocol-specific parameters available.
•
Option cards for the frequency converter are
available to provide extra communication
protocols. See the option card documentation for
installation and operation instructions.
+
RS485
MG20MD02