associated with that terminal. See
for
terminals and associated parameters.
•
It is important to confirm that the control terminal
is programmed for the correct function. See
for details on accessing parameters and
5 About Frequency Converter Programming
for
details on programming.
•
The default terminal programming is intended to
initiate frequency converter functioning in a typical
operational mode.
2.4.5.6 Jumper Terminals 12 and 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
24V 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 in internal 24V signal
on terminal 27
•
No signal present prevents the unit from operating
•
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
2.4.5.7 Terminal 53 and 54 Switches
•
Analog input terminals 53 and 54 can select either
voltage (-10 to 10V) or current (0/4-20mA) input
signals
•
Remove power to the frequency converter before
changing switch positions
•
Set switches A53 and A54 to select the signal type.
U selects voltage, I selects current.
•
The switches are accessible when the LCP has been
removed (see
). Note that some
option cards available for the unit may cover these
switches and must be removed to change switch
settings. Always remove power to the unit before
removing option cards.
•
Terminal 53 default is for a speed reference signal
in open loop set in
16-61 Terminal 53 Switch Setting
•
Terminal 54 default is for a feedback signal in
closed loop set in
16-63 Terminal 54 Switch Setting
Illustration 2.14 Location of Terminals 53 and 54 Switches and Bus
Termination Switch
2.4.5.8 Terminal 37
Terminal 37 Safe Stop Function
The FC 302 and FC 301 (optional for A1 enclosure) is
available with safe stop functionality via control terminal 37.
Safe stop disables the control voltage of the power semicon-
ductors of the frequency converter output stage which in
turn prevents generating the voltage required to rotate the
motor. When the Safe Stop (T37) is activated, the frequency
converter issues an alarm, trips the unit, and coasts the
motor to a stop. Manual restart is required. The safe stop
function can be used for stopping the frequency converter in
emergency stop situations. In the normal operating mode
when safe stop is not required, use the frequency converter’s
regular stop function instead. When automatic restart is used
– the requirements according to ISO 12100-2 paragraph
5.3.2.5 must be fulfilled.
Liability Conditions
It is the responsibility of the user to ensure personnel
installing and operating the Safe Stop function:
•
Read and understand the safety regulations
concerning health and safety/accident prevention
•
Understand the generic and safety guidelines given
in this description and the extended description in
the
Design Guide
•
Have a good knowledge of the generic and safety
standards applicable to the specific application
Installation
VLT
®
AutomationDrive Operating
Instructions
MG.33.AJ.02 - VLT
®
is a registered Danfoss trademark
17
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