Tuning
9.3 One-button auto tuning
SINAMICS V90, SIMOTICS S-1FL6
316
Operating Instructions, 04/2019, A5E36037884-007
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Real-time auto tuning
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Real-time auto tuning estimates the machine load moment of inertia automatically
while the drive is running with the host controller command. After enabling the servo
on (SON), the real-time auto tuning function stays effective for the servo drive. If you
do not need to estimate the load moment of inertia continuously, you can disable the
function when the system performance is acceptable.
For IPos control mode, if you have obtained the machine load inertia (p29022) and desired
dynamic performance with tuned dynamic factor, you can set the drive to the servo off state
and set p29025.5 = 1 to make sure that there is no position overshoot on the axis.
You are recommended to save the tuned parameters when the tuning is completed and the
drive performance is acceptable.
Tuning with SINAMICS V-ASSISTANT
You are recommended to perform tuning with the engineering tool SINAMICS V-ASSISTANT.
For more information, refer to SINAMICS V-ASSISTANT Online Help.
9.3
One-button auto tuning
Note
The function is valid for firmware version V1.04.00 and higher.
Note
Before using the one-button auto tuning, move the servo motor to the middle of mechanical
position to avoid approaching the actual machine position limit.
Pre-conditions for one-button auto tuning
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The ratio of machine load moment of inertia is still unknown and needs to be estimated.
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The motor is allowed to rotate clockwise and counter clockwise.
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The motor rotation position (p29027 defines that one revolution equals to 360 degree) is
allowed by the machine.
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For the motor with an absolute encoder: position limitation is defined by p29027
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For the motor with an incremental encoder: the motor must be allowed to rotate freely
about two rounds when tuning starts
