Dräger Medical Savina, Руководство пользователя

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Function Description Savina
The control PCB contains the following functions:
– Processing of the signals from the sensors (O2, flow, pressure, tempera-
ture),
– Control of the blower and valves
– Monitoring of the unit functions and the supply voltages
– Actuation of the displays
– Keypad interpretation
– Delivery of the internal and external interfaces.
Figure 2 Block diagram: Control PCB
2.1.3 Motor Commutation PCB The motor commutation PCB controls the motor of the blower. The entire
control functionality is located in a self-contained housing. The supply voltage
is +48 V, and is delivered by the power pack. The +48V on the Motor Com-
mutation PCB are protected with a fuse (6.3AT).
The input voltage range of the Motor Commutation PCB is 12 to 52.5V. The
rotation speed is set by the Control PCB. The control voltage for the rotation
speed is 0 to +5.00 V, corresponding to a rotation speed of 0 to 12,000 rpm.
The rotation speed range is 4000 to 12.000 rpm.