Serial Communication - Danfoss VLT AQUA Drive FC 202 Instruction Manual

Installation
L1 L2 L3
Drive
U V W
Mechanical
Brake
Shaft
Motor
Brake
Figure 2.21 Connecting the Mechanical Brake to the
Adjustable Frequency Drive

2.4.6 Serial Communication

Connect RS-485 serial communication wiring to terminals
(+)68 and (-)69.
•
A shielded serial communication cable is
recommended
•
See 2.4.2 Grounding Requirements for proper
grounding
61
68
69
Figure 2.22 Serial Communication Wiring Diagram
®
VLT AQUA Drive
Instruction Manual
Output
relay
02 01
Command Circuit
220Vac
Output
A1
Frewheeling
Contactor
diode
Input
A2
Power Circuit
380Vac
+
RS-485
®
MG20M922 - VLT is a registered Danfoss trademark
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.
•
Four communication protocols are internal to the
adjustable frequency drive. Follow the motor
manufacturer wiring requirements.
Danfoss FC
Modbus RTU
Johnson Controls N2
•
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 for the adjustable frequency drive
are available to provide additional communi-
cation protocols. See the option-card
documentation for installation and instruction
manual
2
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2-13
2