Wiring To Control Terminals; Enabling Motor Operation (Terminal 27); Voltage/Current Input Selection (Switches) - Danfoss VLT AutomationDrive FC 301 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 4.9.
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 screwdriver
into the slot above the contact and push the
screwdriver slightly upwards.
12 13 18 19 27 29 32 33
Illustration 4.9 Connecting Control Wires
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 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 is 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. The jumper provides an
internal 24 V signal on terminal 27.
MG33AQ02
Operating Instructions
•
•
4.8.4 Voltage/Current Input Selection
(Switches)
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 setting:
•
•
NOTICE
Disconnect power to the frequency converter before
changing switch positions.
1.
2.
3.
Illustration 4.10 Location of Terminal 53 and 54 Switches
To run STO, additional wiring for the frequency converter is
required. Refer to VLT
Operating Instructions for further information.
Danfoss A/S © 07/2015 All rights reserved.
When the status line at the bottom of the LCP
reads AUTO REMOTE COAST, it 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.
Terminal 53: Speed reference signal in open loop
(see parameter 16-61 Terminal 53 Switch Setting).
Terminal 54: Feedback signal in closed loop (see
parameter 16-63 Terminal 54 Switch Setting).
Remove the LCP (see Illustration 4.10).
Remove any optional equipment covering the
switches.
Set switches A53 and A54 to select the signal
type. U selects voltage, I selects current.
®
Frequency Converters Safe Torque Off
4 4
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