Technical Description: Control Electronics
Issue 2
63
Part No. 306-0430-102
•
IC U20 (
2
) is a Quadruple Digital to Analogue Converter (QDAC) which converts digital inputs into analogue
0 to +5 volt signals to control functions on the I/O board.
•
The ink pump motor drive board (
3
) acts as an interface between the I/O board and the ink system pump
motor, it is connected to the I/O board via connectors CON_BM1 and CON_BM2. IC U1 (
4
) acts as the ink
pump motor controller. A circuit diagram of the board is supplied in
Appendix A
in this manual.
•
The 300 VDC power supply (
6
) provides the voltage supply to the charge amplifier which is used to charge
the ink droplets.
•
IC U15 (
7
) is a Programmable Peripheral Interface (PPI) which is used to read the states of various sensors
and control functions and to switch control valves and some supervisory lines.
•
IC U16 (
8
) is an Analogue to Digital Converter (ADC) which is used to convert analogue inputs from the ink
system into an 8 bit value for ink system control.
To Next Page
Loading...
