Wiring To Control Terminals; Control Terminal Functions - Danfoss VLT FC 103 Instruction Manual

Installation

2.5.5 Wiring to Control Terminals

Terminal plugs can be removed for easy access.
Figure 2.20 Removal of Control Terminals

2.5.6 Control Terminal Functions

Adjustable frequency drive functions are commanded by
receiving control input signals.
•
Each terminal must be programmed for the
function it will be supporting in the parameters
associated with that terminal. See 5 Programming
and 6 Application Examples for terminals and
associated parameters.
•
It is important to confirm that the control
terminal is programmed for the correct function.
See 5 Programming for details on accessing
parameters and programming.
•
The default terminal programming is intended to
initiate adjustable frequency drive functioning in
a typical operational mode
2.5.6.1 Terminal 53 and 54 Switches
•
Analog input terminals 53 and 54 can select
either voltage (0–10 V) or current (0/4–20 mA)
input signals
•
Remove power to the adjustable frequency drive
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 Figure 2.21).
®
VLT Refrigeration Drive Instruction Manual
NOTE!
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.
Figure 2.21 Location of Terminals 53 and 54 Switches
and Bus Termination Switch
®
MG16J122 - VLT is a registered Danfoss trademark
•
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
2 2
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