GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 335)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
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With this configuration the regulator output is positive and negative.
The gains of the several components have to be set experimentally with a loaded machine.
It is possible to start the tests with the values below :
set PI P gain PID=10%
set PI I gain PID=4%
set PD P gain PID=5%
set PD D gain PID=0%
PD D filter PID=20msec
Set PI central vsel=1
Set PI central v 1=0
With this configuration, when the switching ON/OFF of the parameters enabling the PID function is carried out,
the regulator output starts from 0.
Before enabling the PID regulator and the loop closing it is necessary to check the matching between the set
tension and the tension measured by the loading cell.
The loading cell has to be tuned in order to have an analog output =10V connected to the maximum tension on
the required material.
With a loaded machine start the winder/unwinder by setting a tension of 50%.
Check the values of the parameters Act tension ref (0 ¸ 100%, tension set in the Torque winder menu) and Pid
feedback (0 ¸ 10000, loading cell feedback in the PID menu). The two values must be the same.
If not, act on the parameter Tension scale till the two parameters reach the same values.
After this parameterization has been carried out, it is possible to start the tests with the material.
Improve the system stability via the different components of the blocks PI and PD PID.