4.8.2 Wiring to Control Terminals
Control terminal connectors can be unplugged from the
frequency converter for ease of installation, as shown in
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.
130BD546.11
2
1
10 mm
[0.4 inches]
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.
•
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.
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:
•
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
).
NOTICE
Disconnect power to the frequency converter before
changing switch positions.
1.
Remove the LCP (see
).
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.
130BD530.10
1
2
N O
VLT
BUSTER.
OFF-ON
A53 A54
U- I U- I
Illustration 4.10 Location of Terminal 53 and 54 Switches
To run STO, additional wiring for the frequency converter is
required. Refer to
VLT
®
Frequency Converters Safe Torque Off
Operating Instructions
for further information.
Electrical Installation
Operating Instructions
MG33AQ02
Danfoss A/S © 07/2015 All rights reserved.
19
4
4
Summary of Contents for VLT AutomationDrive FC 301
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