MD280/MD280N User Manual                                             Operation and Display ⼎ 
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RMP (Hz + A) refers to unit of rotation velocity 
% (A + V) refers to percentage 
3˅Data display region 
Five-digit LED display, able to display setup frequency, output frequency, 
various monitor data and alarm code.   
4˅Keyboard button description:   
 
Table 4-1 Keyboard Function Table 
Button  Name  Function 
PRG 
Programming 
key 
Enter or exit from first-level menu. 
ENTER 
Confirmation 
key 
Increase of the data or function code. 
   ġ  Increase key 
Increase of the data or function code 
   Ģ  Decrease key 
Decrease of the data or function code 
  NJ 
Shift key 
On the stop display interface or running display interface, it 
can be used to circularly select the display parameters. When 
modifying the parameters, it can be used to select the bits of 
parameter for modification. 
RUN Running key 
It is used to start the running of the inverter under keyboard 
control mode. 
STOP/RES Stop/reset 
In running status, it can stop the running by pressing this key. 
In alarm status, it can reset operation with this key. The 
characteristics of this key are limited by function code F7-17. 
MF.K 
Multi-function 
selection key 
It is used as function switching selection according to F-15. 
4.2 Description of Function Code Viewing and Modification 
Method
The operation panel of MD280 inverter adopts three-level menu structure to 
perform parameter setting.   
The three-level menu includes: function parameter group (level 1 menu) ĺ 
function code (level 2 menu) ĺ setting value of function code (level 3 
menu).The operation process is as shown in Fig.4-3 
 
 
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