Estun ProNet-15D - Smoothing

ProNet Plus Series AC Servo User's Manual
- 90 -
(5)Electronic Gear Ratio Equation
：Deceleration ratio
Reference pulse
)/( Pmm
B
A
+
—
Speed
loop
×4
n
Pitch＝P（mm/rev）
m
Servomotor
PG(P/rev))
:)/( Pmm
Reference unit
Encoder pulses
P（mm/rev）：Ball screw pitch
n
m
mP
A
Bpn
G 


4)(

n
m
P
P
pn
mP
A
B GG








 44
)(
Set A and B with the following parameters：
A B
：Pn202 ：Pn201
PG(P/rev))：
Position
loop
4.6.4 Smoothing
A filter can be applied in the servo drive to a constant-frequency reference pulse.
(1)Selecting a Position Reference Filter
Parameter
Description
Pn205
0: 1
st
-order filter
1: 2
nd
-order filter
* After changing the parameter, turn OFF the power once and turn it ON again to enable the new setting.
(2)Filter-related Parameters
Pn204
Position Reference Acceleration/Deceleration Time Constant
Setting Range
Setting Unit
Factory Setting
Setting Validation
0～32767
0.1ms
0
Immediately
■Important
When the position reference acceleration/deceleration time constant (Pn204) is changed, a value with no reference
pulse input and a position error of 0 will be enabled. To ensure that the setting value is correctly reflected, stop the
reference pulse from the host controller and input the clear signal (CLR), or turn OFF to clear the error.
This function provides smooth servomotor operation in the following cases.
·When the host controller that outputs a reference that cannot perform acceleration/deceleration processing.
·When the reference pulse frequency is too low.
·When the reference electronic gear ratio is too high (i.e., 10× or more)
Position