Mitsubishi Electric FR-A800 Series Instruction Manual page 240

Magnetic flux control / slip frequency
E
Torque current
command value
Iq*
Speed detection
value
[Pr.1109 = [][][]1]
and Vector control
selected
[Pr.868 = 1] and
Vector control
selected
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Secondary resistance
temperature compensation
Both conditions
FR-A8AZ
satisfied
Motor temperature
detection filter [Pr.407]
Thermistor R2 compensation
Slip frequency
operation
Excitation ratio
Excitation ratio
[Pr.854]
Rated motor frequency
[Pr.84]
PROFIBUS
communication
One of the conditions
satisfied
Analog input
Terminal 1
Magnetic flux 100%
5.3 Speed control under Real sensorless vector control, vector control, PM sensorless vector control
search engine
Real sensorless vector control
Magnetic flux observer enabled
Online auto tuning selection
[Pr.95]
Logic inverted
Magnetic flux observer ωsl
Real sensorless
low-speed excitation
100%
Vector control
Control mode
Excitation current
low-speed scaling factor
[Pr.86]
(130%)
Speed control
Excitation current
break point
[Pr.85]
(10Hz)
70%
Torque control
Excitation current
break point
[Pr.85]
(10Hz)
Magnetic flux command value
Estimated magnetic flux value
[Pr.95=2] Magnetic flux observer enabled or
Real sensorless vector control selected
Enabled
Magnetic flux observer
Estimated magnetic flux value
One of the conditions satisfied
Both conditions satisfied
+
+
Stop-on contact
excitation
Control method Stop-on-contact control
Disabled
Enabled
Real sensorless
vector control
Stop-on contact excitation current
low-speed scaling factor
[Pr.275]
+
Magnetic flux
controller
-
Disabled
Magnetic flux
operation
1
2
3
Slip frequency
ωsl
4
Output frequency
ωout
5
6
7
8
9
10
F
Excitation current
command value
Id*
239
5. PARAMETERS