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Introduction to the Quaternary Pump
The Low-Pressure Pump Main Board (LPM)
Figure 45 Block Diagram Low Pressure Main Board (LPM)
1
MCGV
Active inlet
valve
Valve drive
4 valve drives
Current control
Drive
Pump head
Motor
Encoder
Damper
Pressure
sensor
Filter &
amplifier
A/D converter
Multiplexer
Integrator
Analog output
Offset
correction
Leak sensor
Fan
Sensor
Drive
Amplifier & ϑ ambient measurement
pressure converter
Motor drive
Motor
control
ASIC
Data/
address
Control
ϑ
1
Processor
1
1