Velleman projects K8090 Assembly instructions - Manual (Page 7)

7
Construction
SK1 : 2p power supply
SK2 ... SK9 : 2p (channels 1 ... 8)
10. Terminal blocks
C8, C9 : 4,7µF
11. Electrolytic capacitors.
Watch the polarity !
C...
X1 : 12MHz
12. Quartz crystal
X...
VR1 : UA7805
Check the
orientation !
13. Voltage regulator
VR...
C10 : 1000µF
14. Electrolytic capacitor.
Watch the polarity !
C...
15. Relays
IC1 : VK8090
programmed
PIC18F14K50-I/P or eq.
16. IC. Watch the position of the
notch!
17. Rubber feet
Mount the rubber feet on
the solder side of the
PCB if you do
not mount the
kit into an DIN
rail enclosure .
18. Open collector input (optional)
Connection diagram for use with an
open-collector system.
1 2 3 5 4 6 7 8
RY1 RY5
RY2 RY6
RY3 RY7
RY4 RY8
Important : Put an extra layer of
solder on all pre-thinned PCB tracks,
to improve their current handling
capabilities.