Dräger Medical Savina, Руководство пользователя

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Savina Function Description
The Motor Commutation PCB delivers the “actual rotation speed signal” to
the Control PCB. The “actual value signal” is 6 pulses per rotation. In the
event of discrepancies in the rotation speed the Control PCB adjusts the
speed according to the deviation.
Figure 3 Block diagram of the Motor Commutation PCB
2.1.4 O2 Valve PCB The O2 Valve PCB holds the pressure sensors (2x absolute pressure S6 and
S7, 1x O2 supply pressure S5), the actuator for the O2 calibrating valve and
the nebulizer valve, and the actuator for the valve bank.
The signals from the pressure sensors are amplified and passed to the con-
trol PCB. The +5 V voltage supply to the pressure sensors is generated on
the O2 valve PCB.
The valves in the valve bank, the O2 calibrating valve and the nebuliser valve
can be operated individually by an electronic switch. They are actuated by the
control PCB.
Figure 4 Block diagram: O2 valve PCB