TECHNICAL MANUAL
CVM 3000
C 5030 CV/04-99 GB
14
3 Power supply
Board power supply:
94 - 95 12 Vac board power supply
182 - 183 Expansion (if installed)
105 - 106 12 Vac. isolated power supply
Keyboard power supply:
1 - 2 12 Vac. isolated power supply
3 - 4 12 Vac. isolated power supply
180 - 181 Expansion (if installed)
4 Serial connections
COM1:
0-20mA half duplex serial interface for connection with the display board.
MAIN BOARD
KEYBOARD
102 Input +
5
101 Output -
6
COM2:
0-20mA half duplex serial interface for connection between logic and main
board. With a suitable circuit the current loop is also converted into an RS 485 serial port
for communication to the expansion modules:
MAIN BOARD
EXPANSION BOARD
101 bis
178
102 bis
179
98
179 bis
80VA
TRANSFORMER
code: C5110791
25VA
TRANSFORMER
code: C5110780
230 Vac
230 Vac
Neutral
Neutral
