Wiring To Control Terminals; Enabling Motor Operation (Terminal 27) - Danfoss VLT Refrigeration Drive FC 103 Operating Instructions Manual

Electrical Installation
Terminal Parameter
01, 02, 03
04, 05, 06
4 4
Table 4.2 Terminal Description
Additional terminals:
•
2 form C relay outputs. Location of the outputs
depends on frequency converter configuration.
•
Terminals located on built-in optional equipment.
See the manual provided with the equipment
option.

4.8.2 Wiring to Control Terminals

Control terminal connectors can be unplugged from the
frequency converter for ease of installation, as shown in
Illustration 4.7.
NOTICE
Keep control wires as short as possible and separate
from high power cables to minimise interference.
1. Open the contact by inserting a small screw
driver into the slot above the contact and push
the screw driver slightly upwards.
Illustration 4.9 Connecting Control Wires
2. Insert the bared control wire into the contact.
3. Remove the screw driver to fasten the control
wire into the contact.
4. Ensure the contact is firmly established and not
loose. Loose control wiring can be the source of
equipment faults or less than optimal operation.
18
Operating Instructions
Digital Inputs/Outputs
Default Description
setting
Relays
5-40 [2] Drive ready Form C relay output.
Usable for AC or DC
5-40 [5] Running
voltage and resistive
or inductive loads.
Danfoss A/S © Rev. 2014-02-06 All rights reserved.
See chapter 8.5 Cable Specifications for control terminal
wiring sizes and chapter 6 Application Set-up Examples for
typical control wiring connections.
4.8.3 Enabling Motor Operation (Terminal
27)
A jumper wire may be required between terminal 12 (or
13) and terminal 27 for the frequency converter to operate
when using factory default programming values.
•
Digital input terminal 27 is designed to receive an
24 V DC external interlock command. In many
applications, the user wires an external interlock
device to terminal 27.
•
When no interlock device is used, wire a jumper
between control terminal 12 (recommended) or
13 to terminal 27. This provides an internal 24 V
signal on terminal 27.
•
When the status line at the bottom of the LCP
reads AUTO REMOTE COAST, this indicates that
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 frequency converter cannot operate without a signal
on terminal 27 unless terminal 27 is re-programmed.
MG16E302