User Manual Of EL7-EC** AC Servo
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6.5 Gain switching
Gain switching function can be triggered internally in servo driver. Only valid under
position or velocity control mode. Following effects can be realized by gain switching:
1.
Switch to lower gain when motor stops to suppress vibration
2.
Switch to higher gain when motor is moving at a low velocity to shorten positioning
time
3.
Switch to higher gain when motor is moving at a high velocity to improve command
following behavior.
Diagram below shows gain switching when motor stops.
Command
velocity
Stop
(Servo enabled)
Low Gain
1
st
Gain
Driver
High gain
2
nd
gain
Time
Motion
Status
Gain
Pr1.19 set time
Low Gain
1
st
Gain
Stop
(Servo enabled)
1
st
gain (Pr1.00-Pr1.04) and 2
nd
gain (Pr1.05-Pr1.09) switching can be realized through
manual and positioning mode. Switching condition is set through Pr1.15. Gain switching is
invalid under standard mode.