SD710 Series Servo User Manual Chapter 9 Parameter description
45
Use of electronic gear ratios
Because 1 pulse is set to 1μm when the servo motor rotates and moves the workpiece 10mm
(10000μm), one pulse is equivalent to 1μm, then 10000 ÷ 1 = 10000 is nee
ded and 10000 pulses are
output by the upper computer.
Caution
● It is recommended that the user make electronic gear ratio changes after the motor has been
stopped or at low speeds, otherwise large vibrations may be caused. If vibration occurs during
switching, use position smoothing related parameters to mitigate the vibration.
● For control using internal multi
-segment positions, when the Servo Drive is executing a
segment of position positioning operation, a change in the electronic gear ratio during this period
does not immediately act on the current position until after the current position segment is
completed, and is not effective when the next position segment is executed.
● When an external pulse command is used, the electronic gear ratio chan
ge is immediately
applied to the input pulse.
● The setting range of the electronic gear ratio is.
0.001 ≤ Electronic gear ratio
(
N
M
)
≤
64000
, the ER.d04 fault alarm occurs when this setting range is exceeded.
Pn211
Position command low-pass filtering time
constant
○
Communication
address: 0x0211
Factory value: 0.0
Setting range: 0.0 to 655.0
Unit: ms
Control mode.
□
P
Parameter
Description
Position command low-pass filtering, mainly to provide buffering against too rapid changes in the input
pulse command signal.
Note: This low-pass filter is invalid when set to 0.
Generally used for.
⚫
No acceleration or deceleration function in the upper unit.
⚫
Comparatively large electronic gears.
⚫
Lower frequency of pulse commands.
⚫
The motor operates with stepping steps, unstable phenomena, and other occasions.
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