Nidec Control Techniques Digitax-SF DA21223, Instruction Manual

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7
Digitax SF
Instruction Man
ual
Tuning
7
7. Tuning
2.
Tuning Procedure
2. Tuning Procedure
2. Tuning Procedure
Before getting started with tuning, be sure to implement safety
measures such as hazard prevention, quick stop and impact
mitigation measures�
When operating the servo motor for tuning, start with acceleration/
deceleration speeds slower than your target speed� Ensure safety
first, then gradually increase the speed and perform tuning each
time�
While tuning with
Digitax SF Connect
, do not use the Setup Panel�
While tuning with the Setup Panel, do not operate the motor
with
Digitax SF Connect
�
Step Operation
1 Verify that all wiring has been performed properly�
2 Turn on the control power to the
drive
�
3
Turn on the
AC supply to the drive.
4 To turn the servo ON, connect the SVON pin on the CN1 connector to COM-�
5 Operate the motor at lower speeds according to the command pulse from the host controller�
6
Start tuning with one of the following methods�
Use the setup support software
Digitax SF
Connect
� Install it on a user-supplied computer�
Use the Setup Panel at the front of the
drive
�
Any of the following may interrupt proper performance of Quick Tuning or Auto Tuning�
The inertia ratio is less than 3 or above 20�
(*1)
The load inertia is fluctuating�
Machine rigidity is extremely low�
Non-linear characteristics such as backlash exist�
The speed is low (800
rpm
or lower)�
(*2)
The acceleration or deceleration speed is moderate (around 2,000
rpm
/s)�
The torque is extremely large or small�
In those situations, set the inertia ratio manually based on calculated values�
*1 ）When a too big load inertia is connected, the estimated inertia ratio value will be restricted by the upper limit value
determined
by the upper limit value of the inertia ratio (106�0)�
*2）Proper tuning may not be possible in the case of 300
rpm
or below�
For optimal performance of drive functions and features, the parameters to the drive need to be configured.
Wrong parameter settings will cause unexpected behaviours or difficulties in controlling the motor. Please
read the instruction manuals very carefully to figure out the settings that will best suit your operational
conditions