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7 SPECIAL ADJUSTMENT FUNCTIONS
7.2 Gain switching function
Switchable gain parameter
■
[Pr. PB06] to [Pr. PB10]
These parameters are the same as in ordinary manual adjustment. Gain switching allows the values of load to motor inertia
ratio/load to motor mass ratio, position loop gain, model loop gain, speed loop gain, and speed integral compensation to be
switched.
■
[Pr. PB19] to [Pr. PB22]/[Pr. PB52] to [Pr. PB55]
These parameters are the same as in ordinary manual adjustment. Executing gain switching while the servo motor stops, you
can change vibration frequency, resonance frequency, vibration frequency damping, and resonance frequency damping.
■
[Pr. PB29 Load to motor inertia ratio/load to motor mass ratio after gain switching]
Set the load to motor inertia ratio or load to motor mass ratio after gain switching. If the load to motor inertia ratio does not
change, set it to the same value as [Pr. PB06 Load to motor inertia ratio/load to motor mass ratio].
■
[Pr. PB30 Position loop gain after gain switching], [Pr. PB31 Speed loop gain after gain
switching], and [Pr. PB32 Speed integral compensation after gain switching]
Set the values of after switching position loop gain, speed loop gain and speed integral compensation.
Loop gain
Before switching
After switching
Parameter
Symbol
Name
Parameter
Symbol
Name
Load to motor inertia ratio/
load to motor mass ratio
PB06
GD2
Load to motor inertia ratio/load
to motor mass ratio
PB29
GD2B
Load to motor inertia ratio/load
to motor mass ratio after gain
switching
Model loop gain
PB07
PG1
Model loop gain
PB60
PG1B
Model loop gain after gain
switching
Position loop gain
PB08
PG2
Position loop gain
PB30
PG2B
Position loop gain after gain
switching
Speed loop gain
PB09
VG2
Speed loop gain
PB31
VG2B
Speed loop gain after gain
switching
Speed integral
compensation
PB10
VIC
Speed integral compensation
PB32
VICB
Speed integral compensation
after gain switching
Vibration suppression
control 1 - Vibration
frequency
PB19
VRF11
Vibration suppression control 1 -
Vibration frequency
PB33
VRF11B
Vibration suppression control 1 -
Vibration frequency after gain
switching
Vibration suppression
control 1 - Resonance
frequency
PB20
VRF12
Vibration suppression control 1 -
Resonance frequency
PB34
VRF12B
Vibration suppression control 1 -
Resonance frequency after gain
switching
Vibration suppression
control 1 - Vibration
frequency damping
PB21
VRF13
Vibration suppression control 1 -
Vibration frequency damping
PB35
VRF13B
Vibration suppression control 1 -
Vibration frequency damping
after gain switching
Vibration suppression
control 1 - Resonance
frequency damping
PB22
VRF14
Vibration suppression control 1 -
Resonance frequency damping
PB36
VRF14B
Vibration suppression control 1 -
Resonance frequency damping
after gain switching
Vibration suppression
control 2 - Vibration
frequency
PB52
VRF21
Vibration suppression control 2 -
Vibration frequency
PB56
VRF21B
Vibration suppression control 2 -
Vibration frequency after gain
switching
Vibration suppression
control 2 - Resonance
frequency
PB53
VRF22
Vibration suppression control 2 -
Resonance frequency
PB57
VRF22B
Vibration suppression control 2 -
Resonance frequency after gain
switching
Vibration suppression
control 2 - Vibration
frequency damping
PB54
VRF23
Vibration suppression control 2 -
Vibration frequency damping
PB58
VRF23B
Vibration suppression control 2 -
Vibration frequency damping
after gain switching
Vibration suppression
control 2 - Resonance
frequency damping
PB55
VRF24
Vibration suppression control 2 -
Resonance frequency damping
PB59
VRF24B
Vibration suppression control 2 -
Resonance frequency damping
after gain switching
Summary of Contents for MELSERVO-J4 series
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