Danfoss VLT AQUA Drive FC 202 Operating Manual page 67

Electrical Installation
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Illustration 5.38 Connecting Flexible Control Wires
Disconnecting wires from the control terminals
1. To open the contact, insert a small screwdriver
into the slot between the terminal holes and
push the screwdriver inward.
2. Pull gently on the wire to free it from the control
terminal contact.
See chapter 10.5 Cable Specifications for control terminal
wiring sizes and chapter 8 Wiring Configuration Examples for
typical control wiring connections.
5.9.4 Enabling Motor Operation
(Terminal 27)
A jumper wire is required between terminal 12 (or 13) and
terminal 27 for the drive to operate when using factory
default programming values.
•
Digital input terminal 27 is designed to receive
24 V DC external interlock command.
•
When no interlock device is used, wire a jumper
between control terminal 12 (recommended) or
13 to terminal 27. This wire provides an internal
24 V signal on terminal 27.
•
When the status line at the bottom of the LCP
reads AUTO REMOTE COAST, the unit is ready to
operate, but is missing an input signal on
terminal 27.
•
When factory-installed optional equipment is
wired to terminal 27, do not remove that wiring.
NOTICE
The drive cannot operate without a signal on terminal
27, unless terminal 27 is reprogrammed using
parameter 5-12 Terminal 27 Digital Input.
MG21A502
Operating Guide
5.9.5 Configuring RS485 Serial
Communication
RS485 is a 2-wire bus interface compatible with multi-drop
network topology, and it contains the following features:
•
•
•
•
•
For basic serial communication set-up, perform the
following steps:
1.
2.
Illustration 5.39 Serial Communication Wiring Diagram
Danfoss A/S © 09/2018 All rights reserved.
Either Danfoss FC or Modbus RTU communication
protocol, which are internal to the drive, can be
used.
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 the specifications of the protocol, making
more protocol-specific parameters available.
Option cards for the drive are available to provide
more communication protocols. See the option
card documentation for installation and operation
instructions.
A switch (BUS TER) is provided on the control
card for bus termination resistance. See
Illustration 5.40.
Connect RS485 serial communication wiring to
terminals (+)68 and (-)69.
1a Use shielded serial communication cable
(recommended).
1b See chapter 5.4 Connecting to Ground for
proper grounding.
Select the following parameter settings:
2a Protocol type in parameter 8-30 Protocol.
2b Drive address in parameter 8-31 Address.
2c Baud rate in parameter 8-32 Baud Rate.
61
68 +
RS485
69
5 5
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