INVT SV-DA200 Operation Manual page 221

SV-DA200 series AC servo drives Commissoning
If the pulse transmission frequency of the pulse generator is restricted, or the transmission frequency
does not meet the mechanical requirements, we can change the pulse input frequency by adjusting
the value of the electronic gear parameters (P0.25, P0.26, P0.27, P0.28 and P0.29) to meet the
requirements for position control.
5) Adjustment of position feed-forward
In the case the retention pulse is large or fault-free follow-up is required, we can improve the position
follow-up performance by adjusting the speed feed-forward gain parameter (P2.10) and speed
feed-forward gain filter parameter (P2.11). However, it should be noted that if the speed feed-forward
gain is too large, it may cause system oscillation.
6) Frequency division of the feedback pulse output
If the feedback pulse needs to be outputted, the frequency division coefficient of pulse output (P0.06,
P0.07) can be used to change the frequency of the output pulse.
7.2.2 Adjustment of the gain of the speed loop
The speed control block diagram of the SV-DA200 series servo drive is shown in the figure below.
The gain parameters that can be adjusted in the speed mode are marked on the block diagram.
The general procedures for parameter adjustment in the speed mode are:
1) Initial setting of the parameters
The defaults of the parameters can be recovered by the default parameter recovering operation (see
chapter 5.2.5.3 for details).
2) Adjustment of the gain of the speed loop
When the servo motor is running with default parameters, if the system oscillation occurs with buzz,
the speed gain (P2.00, P2.05) should be adjusted smaller. If the system rigidity is relatively small or
the speed fluctuates largely, the speed gain should be adjusted larger.
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