BUSCH PLUS Master Control, Instruction Manual, Page: 34 / 44

7 | Settings
34 / 44 Instruction Manual PLUS Master Control R5 PLUS_EN_en
• P = Proportional gain (Kp)
• I = Integral time (Tn)
• D = Derivate time (Tv)
By default, two sets of parameters are programmed in the control unit(s) of the ma-
chine(s):
End vacuum
≤
inlet pressure
<
125 mbar 125 mbar
≤
inlet pressure
<
400 mbar
P (Kp) I (Tn) D (Tv) P (Kp) I (Tn) D (Tv)
0.4 6 0 0.1 3 0
The modification of the PID parameters is possible, in order to adjust the reactivity / sta-
bility of the machine(s) and fine tune the pressure control to each application and each
process requirement.
• To change the PID settings:
– Set the required target pressure.
– Turn on the PLUS Master regulation (see System Activation [ ► 16] ).
– Click on the value(s) to be modified (PID, switching pressure between the two sets of
parameters) and type the new value(s).
– The system will dynamically use the new parameters. Test and adjust the settings un-
til the system achieves the required performance.
• To restore the factory settings:
– Press the “Factory settings” button.
NOTICE
Wrong PID settings
Risk of loss of performance!
Selecting inappropriate PID settings can affect system performance.
• Make sure that the pressure control is effective at each step of the process and restore
factory settings if necessary.
7.2 Local Settings of the PLUS Pumps
The parameters and settings of the PLUS Master Control have priority over the local
parameters and settings of each PLUS vacuum pump in the system.
Therefore, all parameters described in this manual and set through the PLUS Master
Control interface apply to all pumps instead of their local settings (Ecomode, Week-plan-
ner, Warm-up and cool-down,…).
However, some parameters are not controlled by the PLUS Master Control. In this case
the local parameters defined in the control interface of each PLUS pump apply. This is
particularly the case for the following functions:
• gas ballast control,
• warnings and alarms,
• advanced pumps settings.
In addition, the basic settings of the PLUS Master interface (language, time and date,
units) follow the basic settings of the Master pump. These settings must therefore be
changed in the control interface of the Master pump.
For further information, refer to the specific document “Pump Control Instructions,
art.0870213261” and to the instruction manual(s) of the respective pump(s).