HC5-10
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User Manual
Rev. 1.0 - 26/03/04
9. Theory of Operation
The figure shows the block diagrams of HC5-10. A general description of the machine’s
operation has been given in the precedents chapters, while in this chapter comes
described the operation of the various blocks.
9.1
Operating Blocks
9.1.1
Power Supply
It in the HC5 is present only one mains transformer with different secondary winding.
The secondary used are: 18-0-18V/ 0-11,5 V/ 0-17V for the feeding of the control
interface card, that will go to feed all the cards that compose the machine. The rectifiers
and the stabilizers are situated on the mentioned card.
9.1.2
Control Interface Card
All the measure signals of all the cards transit on this card and provides to furnish the
necessary feedings to all the cards of the apparatus.
The circuit also comprises a card with a CPU mounted above that has the function of
serial communication in standard 485.
Are managed some protections of the system too, like for example the power
reduction of the amplifiers in case of anomalies or the intervention of the emergency
fans.
