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Display readout
Fr
The variable frequency drive shows the present
output frequency in Hertz [Hz].
Io
The variable frequency drive shows the present
output current in Amps [A].
Uo
The variable frequency drive shows the present
output voltage in Volt [V].
Ud
The variable frequency drive shows the intermediate
circuit voltage in Volt [V].
Po
The variable frequency drive shows the calculated
output in kilowatt [kW].
notrun
This message is shown if an attempt is made to change
a parameter value while the motor is running. Stop
the motor to change the parameter value.
LCP
This message is shown if an LCP 2 control unit is
fitted and the [QUICK MENU] or [CHANGE DATA]
key is activated. If an LCP 2 control unit is fitted
you can only change parameters with that.
Ha
The variable frequency drive shows the present Hand
mode reference frequency in Herz (Hz).
SC
The variable frequency drive shows scaled
output frequency (the present output frequency
x parameter 008).
MG.28.A8.22 - VLT is a registered Danfoss trademark
VLT® 2800 Series
Hand / Auto mode operation
During Auto mode operation, the adjustable frequency
drive receives an external reference through the control
terminals as analog or digital signals. In Auto mode, use
the [+] and [-] keys to scroll through the display of drive
status messages. In Hand mode, it is possible to control
the speed of the drive locally through the keypad.
On the control terminals, the following control signals
will remain active when Hand mode is activated:
•
Hand Start (LCP2)
•
Off Stop (LCP2)
•
Auto Start (LCP2)
•
Reset
•
Coasting Stop Inverse
•
Reset and Coasting Stop Inverse
•
Quick Stop Inverse
•
Stop Inverse
•
Reversing
•
DC Braking Inverse
•
Setup Select LSB
•
Setup Select MSB
•
Thermistor
•
Precise Stop Inverse
•
Precise Stop/Start
•
Jog
•
Stop Command Via Serial Comm.
Switching between Auto and Hand mode:
To switch between operational modes, press
the [Change Data] key. The display will indicate
the current mode of operation.
Use the [+] and [-] keys to toggle between Hand
and Auto mode. Press the [Change Data] key
again to activate the selected mode, otherwise
the mode displayed will take effect automatically
in about three seconds.
Operation in Hand mode:
When the adjustable frequency drive is running normally
in Hand mode, the display will show HA to indicate
Hand mode along with the drive output frequency.
27
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