4.5.2. MCS 3


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Fig. 4.14: The BOGE Master Control System 3
MCS 3 controls a maximum of 4, 8, or 12 compressors of the same and/or different size and type in a system. All compressors are controlled by a common pressure sensor on the compressed air receiver.
The MCS 3 has at 0.5 bar a very small cut-in difference. The individual compressors are not given fixed cut-out and cut-in pressures. All compressors work in the same pressure range ( ? p = 0.5 bar ). The compressors cut-in dynamically according to requirement via set intermediate pressure values. The speed of pressure rise and fall is measured. The compressors switch on and off dynamically.
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Fig. 4.15: Circuit diagram of the BOGE MCS 3
The control offers:
    • Dynamic pressure control by microcontroller in connection with electronic pressure controllers for a minimum cut-in difference of 0.5 bar. ( no over-compression ? energy saving )
    • Time dependent allotment of compressors in rank stages for shift operation with differing compressed air requirement.
    • Individual assignment of individual compressors to load range groups, uniform usage of compressors.
    • Adjustable basic load changeover cycle.
    • Independent rotation of compressors into the load range groups.
    • Time offset allocation of compressors if demanded by the control unit.
    • Well arranged LCD-display with 4 x 20 characters and clear text.
    • Possibility of checking all inlets and outlets via a test-menu.
    • Automatic reverting to pressure switches of individual compressors in the event of voltage loss.
    • The individual compressors work independently without the MCS 3. They are then controlled from their own pressure switches.