MG.20.B6.02 – VLT is a registered Danfoss trademark
VLT
®
2000 Series
18
c) Make a quick stop by means of disconnecting
between terminal 27 and terminal 12.
Example of display indication:
During the simulation you can see that the VLT
frequency converter reacts by watching the
display indications.
If no external control has been
connected, you can choose to simulate
the function of the VLT frequency converter
locally via the keyboard. See description at
the bottom of page 31.
5. Press the “Stop” key to stop the VLT frequency
converter
before you connect the motor.
6. Test the whole system (repeat steps 4 and 5) with
the motor connected to check the direction of
rotation.
Commissioning and testing
When the VLT frequency converter has been connected to
control signals, you may want to test the system.
This following test is not suitable if you use the built-in
PI controller.
1. Disconnect the motor from the VLT frequency
converter.
2. Connect the VLT frequency converter to the mains.
3. Make the necessary settings such as min./max.
frequency and connect the necessary control
signals, possibly via PLC.
As a minimum you must set the parameters
and connect the control signals as described
in chapter 1, Quick Setup.
4. Make a simulation without motor:
a) Give a start signal via a contact to terminal 18.
Example of display indication:
b) The speed (frequency) can be changed by
means of the potentiometer connected.
Example of display indication:
After installation
00,0 Hz
FREQUENCY
STOP 1
23,7 Hz
FREQUENCY ➜
FUNCTION OK 1
30,0 Hz
FREQUENCY ➜
FUNCTION OK 1
Basic settings
The VLT frequency converter has been preset from
the factory so that normally it will function after a few
data values are recorded/changed.
See Quick Setup on page 15.
The factory settings of the VLT frequency
converter are listed on page
105.
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