Omron SYSDRIVE 3G3MV User Manual page 165

Advanced Operation
gent line and time axis and the point of intersection of the tangent line and set point
line.
Response
Target value
S PID Parameter
The following PID parameters are calculated from the R, L, and T of intersection of
the tangent line and set point line as general rules.
Control
P control 0.3/RL
PI control 0.35/RL
PID control 0.6/RL
Note 1. Obtain PID parameter values from the above method, set the PID parameters,
and tune in the PID parameter values precisely.
Note 2. PID parameter values obtained from the above method may not be optimum if
the friction factor of the mechanical system is large or the rigidity of the mechan-
ical system is low.
H Manual PID Adjustments
·Perform the following procedure to adjust the PID parameter values of the Inverter per-
forming PID control by monitoring the response waveform.
1. Connect the load in the same way as the connection of the load to the Inverter in
normal operation.
2. Set n128 so that the Inverter will perform PID control.
3. Increase the proportional (P) gain in n130 within a range causing no vibration.
Proportional (P) gain
(n130)
Time
Integral (I) time
(n131)
---
1.2T
T
Chapter 6
Derivative (D) time
(n132)
---
---
0.5L
6-23