Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

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Parameters Real sensorless vector control, vector control, PM sensorless vector control adjustment
FR-A800 5 - 195
5.6.2 Excitation ratio
The excitation ratio can be lowered to enhance efficiency for light loads. (Motor magnetic noise can
be reduced.)
Pr. Name
Initial
value
Setting
range
Description
854
G217
Excitation ratio 100% 0 to 100% Set an excitation ratio when there is no load.
I001543E
Fig. 5-75: Setting of the excitation ratio
NOTES When excitation ratio is reduced, output torque startup is less responsive.
The setting of Pr. 854 is invalid if Pr. 858 "Terminal 4 function assignment" or Pr. 868 "Terminal 1
function assignment" is set to "1" (flux command according to terminal).
Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Vector Vector Vector
Excitation ratio [%]
100
(initial value)
Pr. 854
setting
0 100 Load [%]