ADP200 Application PID-IMM User Manual Pag. 53 of 80
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5.5.2 GAIN Tuning
Speed and pressure control loops usually require a calibration.
This calibration can be done in different mode Automatic mode or Manual Mode:
1- AUTOMATIC: The gains are calculated from the drive following the procedure described in the TUNING
menu. The calculated values can be used by the speed and pressure regulator. This function is available
from FW. Version ADP200V 1_0_1-PID-IMM Application V1_18_37_1. The complete explanation of this
procedure are in the chapter “TUNING”
2- MANUAL procedure. Is done following the procedure described here below.
To make tuning operation easier and to have a fast feedback of the control performances, it is possible to
add a square waveform signal to both speed and pressure references changing parameter Ipa 11070
Reference Variation on REFERENCEs menu.
In order to reduce overshoot, it is possible to add ramp on input references by changing the parameters Ipa
11066 Press Ramp Acc Coef and 11068 Speed Ramp Acc Coef.
See section RFERENCE parameters for a description of above mentioned functions parameters.
As a general recommendation, it is suggested to perform tuning by making injection and pressure hold cycle
with material: during this phase, machine works first in speed mode and then it switches to pressure mode.
Softscope tool allow performing calibration on both Pressure and Speed loop by using a single machine
movement. The procedure for mapping MDPLC application variables on Softscope is described in tool
specific manual (see “1S9SFTEN_26-9-13_SoftScope-EN”, page 17 – “Softscope with MDPLC Applications).
Following signals need to be mapped for Softscope sampling:
- vSpeed_Fbk
- vSpeed_Ref_Mon
- vPressureFbk
- vPressure_Ref_Mon
-
Figure 26: Softscope Acquisition during injection
As example on softscope it is possible to make comparison between the reference and feedback of Speed
and Pressure. The following figure show a scope with Reference variation parameter.
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