9.12 Additional Adjustment Functions
9.12.1 Gain Switching
9-65
9
T
uning
9.12
Additional Adjustment Functions
This section describes the functions that you can use to make adjustments after you perform
autotuning without a host reference, autotuning with a host reference, and custom tuning.
*
Automatic gain switching is enabled only for position control.
9.12.1
Gain Switching
You can use gain switching to shorten the positioning time by increasing the gains during posi-
tioning and suppressing vibration by decreasing the gains while stopping.
Note: Pn139 = n.
1 is a reserved setting. Do not use this setting.
Refer to the following section for gain switching combinations.
Gain Switching Combinations
Note: Automatic gain switching is not supported for Model Following Control Gain and Model Following Control
Correction.
Automatic Gain Switching
Automatic gain switching is enabled only for position control. The switching conditions are
specified by using the following settings.
Function
Applicable Control Methods
Reference
Gain Switching
Position control, speed control, or torque control
*
Friction Compensation
Position control or speed control
Current Control Mode Selection
Position control, speed control, or torque control
Current Gain Level Setting
Position control or speed control
Speed Detection Method Selection Position control, speed control, or torque control
Backlash Compensation
Position Control
Parameter
Function
When Enabled
Classification
Pn139
(2139h)
n.
0
(default setting)
Disable automatic gain switching.
Immediately Tuning
n.
2
Enable automatic gain switching.
Selected
Gains
Speed Loop
Gain
Speed Loop
Integral Time
Constant
Position Loop
Gain
Torque Reference
Filter
Friction
Compensation
Gain
Gain
Settings 1
Speed Loop
Gain (Pn100)
Speed Loop Inte-
gral Time Constant
(Pn101)
Position Loop
Gain (Pn102)
First Stage First
Torque Reference
Filter Time Con-
stant (Pn401)
Friction Com-
pensation Gain
(Pn121)
Gain
Settings 2
Second
Speed Loop
Gain (Pn104)
Second Speed
Loop Integral Time
Constant (Pn105)
Second Posi-
tion Loop Gain
(Pn106)
First Stage Second
Torque Reference
Filter Time Con-
stant (Pn412)
Second Friction
Compensation
Gain (Pn122)
Parameter
Switching
Condition
Selected Gains
Switching
Waiting Time
Switching Time
Pn139
(2139h)
n.
2
Condition A
satisfied
Gain settings 1 to gain set-
tings 2
Gain Switching
Waiting Time 1
Pn135
Gain Switching
Time 1
Pn131
Condition A not
satisfied
Gain settings 2 to gain set-
tings 1
Gain Switching
Waiting Time 2
Pn136
Gain Switching
Time 2
Pn132