154
7. Adjustment during Real sensorless vector control, Vector control, PM sensorless vector control
7.1 Speed detection filter
7
Adjustment during Real sensorless vector
control, Vector control, PM sensorless vector
control
7.1
Speed detection filter
Set the time constant of primary delay filter for speed feedback signal.
Speed loop response is reduced. Under ordinary circumstances, therefore, use the initial value as it is.
*1
The setting is available when a Vector control compatible option is installed.
Stabilizing speed detection
(Pr.823, Pr.833)
• Speed loop response is reduced. Under ordinary circumstances, therefore, use the initial value as it is.
If there is speed ripple due to high frequency disturbance, adjust until speed stabilizes by gradually raising the setting.
Speed is oppositely destabilized if the setting value is too large.
• This setting is valid under Vector control only.
Employing multiple primary delay filters
• Use
Pr.833
if changing filter according to application.
Pr.833
is enabled when the Second function selection (RT) signal is
turned ON.
NOTE
• The RT signal is the Second function selection signal. The RT signal also enables other second functions. (Refer to
.)
• The RT signal is assigned to the terminal RT in the initial status. Set "3" in one of
Pr.178 to Pr.189 (Input terminal function
selection)
to assign the RT signal to another terminal.
Purpose
Parameter to set
Refer to
page
To stabilize speed feedback signal
Speed detection filter
P.G215, P.G315
Pr.823, Pr.833
To change excitation ratio
Excitation ratio
P.G217
Pr.854
Pr.
Name
Initial value
Setting range
Description
823
G215
Speed detection filter 1
0.001 s
0
Without filter
0.001 to 0.01 s
Set the time constant of primary delay filter for speed
feedback signal.
833
G315
Speed detection filter 2
9999
0 to 0.01 s
Second function of
Pr.823
(enabled when the RT
signal is ON)
9999
Same as
Pr.823
setting
Vector
Vector
Vector
Summary of Contents for FR-E800
Page 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Page 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Page 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Page 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Page 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Page 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Page 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Page 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Page 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...
