ADP200 Application PID-IMM User Manual Pag. 57 of 80
5.7 SWITCH_GAIN menu
The PID-IMM application automatically switches between speed and pressure loop. The switch gain menu
allow the possibility to tune the switching logic in order to optimize the dynamic of the control.
If IPA 11148 (Fixed Contr Enabler) is disabled PID-IMM application switches properly the control or in
pressure or in speed/flow. The system recognizes which is the target that must be followed according to the
hydraulic circuit current pressure value, and pressure reference.
Pressure control is disabled if the pressure error % = [(Pressure Set Point - Pressure Feedback) /
Pressure Set Point * 100.0] is above the specified value in IPA 11150 (P_Cont_Dis_Thr) and it is
disabled if it is below IPA 11152 (P_Cont_En_Thr).
Figure 30: Switch Gain logic
If IPA 11148 (Fixed Contr Enabler) is enabled the control is based on IPA 11148 (Fixed Contr Type)
Min Press for PCnt Minimum pressure value that triggers switch to pressure control.
Fixed Contr Enabler If Enabled control is fixed in flow or in pressure based on IPA 11148 (Fixed Contr
Type).
0=DISABLED
1=ENABLED
Fixed Contr Type Control can be Pressure (pressure reference is followed) or Speed/Flow . Note that
speed/flow reference is followed without considering the pressure feed-back
0=Pressure
1=Speed Flow
P_Cont_En_Thr Pressure control is enabled if the relative percentage error of Pressure Feedback
and internal Pressure Set Point is above the specified value
P_Cont_Dis_Thr Pressure control is disabled if the relative percentage error of Pressure Feedback
and internal Pressure Set Point is below the specified value
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