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7.2.2 Pressure Control
The pressure control mode allows to maintain a constant pressure level (target pressure)
by automatically adapting the motor frequency. This mode is only available for “Role 2”
users, see Role and User [►12].
To switch from speed control to pressure control:
• Press on the target pressure value (password required).
• Assign the target pressure in the keypad and press “Enter”.
• Press on the switch button.
Speed control
Pressure control
Operating mode
On
Off
60 Hz
20 mbar
Parameter Default value Adjustment range
Pressure control (target pressure) 20 <5 … 400 mbar
• For smooth process pressure control, it is required to adjust the PID parameters.
• Refer to the specific document “Pump Control Instructions, art. no.: 0870213261” for
more details or contact your Busch representative.
NOTE
Display of the ultimate pressure.
Due to sensor accuracy, the minimum displayed value of the ultimate pressure is 5
mbar preceded by the symbol "<", which means that the actual value is lower than dis-
played.
The ultimate pressure of the machine is indicated on the nameplate (NP).
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