WILLETT 430 - Page 84

Technical Description: Control Electronics
Issue 2
67
Part No. 306-0430-102
CON_B1 (
7
) - Interboard connector to I/O board to the CPU board.
Pin No. Signal Function Pin No. Signal Function
1 0 V 11 opto I/O E
2 - Not used 12 adc A/D converter output enable
3 pec1 Photocell 1 output 13 to 20 cb0 to
cb7
Control bus bits 0 to 7
4 phase
det
Phase detector 21 to 28 db0 to
db7
Data bus bits 0 to 7
5 ADEOC A-D end of conversion 29 qddc D/A converter output enable
6 phase
det
Phase detector 30 levels Optical level sensors enable
7 pec2 Photocell 2/shaft encoder
quadrature output
31 pcs3 PPI enable
8 print/pha
se
Print/phase 32 shaft enc Shaft encoder output
9 strobe LED strobe 33 extra 1 Traffic light enable
10 pwm Pump control (pulse width
modulation)
34 contrast LCD contrast
Table 17 I/O Connector CON_B1
CON_EX (
8
) - Interboard connector to I/O board to the optional expansion board.
Pin No. Signal Function Pin No. Signal Function
1 VCC +5 V DC 15 TACHO For use with external DC tacho
2 to 9 db0 to
db7
Data bus bits 0 to 7 16 0 V
10 External message select 17 0 V
11 Opto-isolated output select 18 +24 V
12 cb6 Control bus bit 6 (not used) 19 - 24 V
13 cb7 Control bus bit 7 (not used) 20 GND
14 cb0 Control bus bit 0 (not used)
Table 18 I/O Connector CON_EX