User manual of EL8-EC***F AC Servo
80
Pr1.04
Label
1
st
Torque Filter Time
Constant
Mode
F
Range
0~250
0
Unit
0.01ms Default
126
Index
2104h
Activation
Immediate
To set torque command low-pass filter, add a filter delay time constant to torque command and
filter out the high frequencies in the command.
Often used to reduce or eliminate some noise or vibration during motor operation, but it will reduce
the responsiveness of current loop, resulting in undermining velocity loop and position loop
control. Pr1.04 needs to match velocity loop gain.
Recommended range: 1,000,000/(2
π×Pr1.04) ≥Pr1.01×4
For example: Velocity loop gain Pr1.01=180(0.1Hz) which is 18Hz. Time constant of torque filter
should be
Pr1.01≤221(0.01ms)
If mechanical vibration is due to servo driver, adjusting Pr1.04 might eliminate the vibration. The
smaller the value, the better the responsiveness but also subjected to machine conditions. If the
value is too large, it might lower the responsiveness of current loop.
With higher Pr1.01 value settings and no resonance, reduce Pr1.04 value;
With lower Pr1.01 value settings, increase Pr1.04 value to lower motor noise.
Pr1.05
Label
2
nd
Position Loop Gain
Mode
PP
HM
CS
P
Range
0~30000 Unit
0.1/s
Default
380
Index
2105h
Activation
Immediate
Pr1.06
Label
2
nd
velocity loop gain
Mode
F
Range
1~32767 Unit
0.1Hz
Default
180
Index
2106h
Activation
Immediate
Pr1.07
Label
2
nd
Integral Time
Constant of Velocity
Loop
Mode
F
Range
1~1000
0
Unit
0.1ms Default
10000
Index
2107h
Activation
Immediate
Pr1.08
Label
2
nd
velocity detection
filter
Mode
F
Range
0~31
Unit
—
Default
15
Index
2108h
Activation
Immediate
Содержание EL8-EC Series
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