1100 Series Nano Pump Service Manual 207
Introduction to the Nano Pump 5
The Electronics
The electronics are comprised of four main components:
• The nano pump main board (NPM), see page 207.
• The power supply, see page 228.
Optional:
• The interface board (BCD/external contacts), see page 215.
• The interface board (LAN), see page 217.
Nano pump main board (NPM)
The board controls all information and activities of all assemblies within the
nano pump. The operator enters parameters, changes modes and controls the
nano pump through interfaces (CAN, GPIB or RS-232C), connected to the
user-interfaces. Figure 41 and Figure 42 show block diagrams of this board.
ASIC — Application-Specific Integrated Circuit
The application-specific integrated circuit (ASIC) includes all digital logic for
the core processor functions and also for module-specific functions.
Motor Drive
There are two identical motor drives for the drive assemblies. Each drive
comprises motor control, motor amplifier (drive) and current control.
Active Inlet Valve Drive
There are two identical valve drives for the two active inlet valves. Each drive
comprises two amplifiers for the two contacts of valve solenoid.
Solvent Selection Valve Drive
This drive consists of amplifiers for the solenoids of the solvent selection
valve.
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