Danfoss VLT AQUA Drive FC 202 Operating Manual page 44

Electrical Installation
5.8.3 Wiring to Control Terminals
Control terminal connectors can be unplugged from the
drive for ease of installation, as shown in Illustration 5.20.
5 5
Illustration 5.20 Connecting Control Wires
NOTICE
Minimize interference by keeping control wires as short
as possible and separate from high-power cables.
1. Open the contact by inserting a small screwdriver
into the slot above the contact and push the
screwdriver slightly upwards.
2. Insert the bare control wire into the contact.
3. Remove the screwdriver to fasten the control wire
into the contact.
4. Ensure that the contact is firmly established and
not loose. Loose control wiring can be the source
of equipment faults or reduced performance.
See chapter 9.1 Electrical Data for control terminal wiring
sizes and chapter 7 Wiring Configuration Examples for
typical control wiring connections.
5.8.4 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.
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VLT® AQUA Drive FC 202
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Danfoss A/S © 01/2017 All rights reserved.
•
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.
5.8.5 Configuring RS485 Serial
Communication
RS485 is a 2-wire bus interface compatible with multi-drop
network topology, and it contains the following features:
•
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 5.22.
For basic serial communication set-up, perform the
following steps:
1. Connect RS485 serial communication wiring to
terminals (+)68 and (-)69.
1a Use shielded serial communication cable
(recommended).
1b See chapter 5.6 Connecting to Ground for
proper grounding.
2. 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.
MG22A102