Wiring To Control Terminals; Enabling Motor Operation (Terminal 27); Voltage/Current Input Selection (Switches) - Danfoss VLT AQUA FC 202 Operating Instructions Manual

Electrical Installation

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
4 4
from high power cables to minimise interference.
1. Open the contact by inserting a small screwdriver
into the slot above the contact and push the
screwdriver slightly upwards.
Illustration 4.9 Connecting Control Wires
2. Insert the bared control wire into the contact.
3. Remove the screwdriver 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.
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 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 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
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Operating Instructions
NOTICE
The frequency converter cannot operate without a signal
on terminal 27, unless terminal 27 is re-programmed.
4.8.4 Voltage/Current Input Selection
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 settings:
NOTICE
Disconnect power to the frequency converter before
changing switch positions.
Illustration 4.10 Location of Terminal 53 and 54 Switches
Danfoss A/S © Rev. 05/2014 All rights reserved.
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.
(Switches)
•
Terminal 53: speed reference signal in open loop
(see 16-61 Terminal 53 Switch Setting).
•
Terminal 54: feedback signal in closed loop (see
16-63 Terminal 54 Switch Setting).
1. Remove the LCP (or Local Control Panel) (see
Illustration 4.10).
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.
MG20MB02