![WILLETT 450 SI Technical Manual Download Page 194](http://html.mh-extra.com/html/willett/450-si/450-si_technical-manual_981744194.webp)
SEE
SHEET 1
FOR I/O
BOARD
CIRCUIT
1
2
3
4
2
5
5
6
7
8
1
7
9
10
11
12
14
9
13
14
15
13
11
16
17
18
19
20
2
5
21
22
23
24
1
7
25
26
27
28
14
9
29
30
31
32
33
34
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
LEVELS
JP1
U3
U4
RECTIFIER
ZENER
BARRIER
MIXER
LOW
2
1
F1
50 mA
RECTIFIER
ZENER
BARRIER
MIXER
OK
4
3
F2
50 mA
RECTIFIER
ZENER
BARRIER
MIXER
HIGH
6
5
F3
50 mA
RECTIFIER
ZENER
BARRIER
VMS
LOW
8
7
F4
50 mA
RECTIFIER
ZENER
BARRIER
VMS
HIGH
10
9
F5
50 mA
RECTIFIER
ZENER
BARRIER
INK
RES LOW
2
1
F6
50 mA
RECTIFIER
ZENER
BARRIER
SOLVENT
RES LOW
4
3
F7
50 mA
ZENER
BARRIER
LEVELS BOARD
F8
50 mA
JP5
JP4
0 V
+15 V
+15 V
0 V
-15 V
-15 V
0 V
0 V
GND
GND
6(&7,21ýììýðý)$,/85(ý',$*126,6ý$1'ý5(3$,5
õ/(9(/ý7+5((ô
-XQýäå
,VVXHýëïì
3DJHýììïèí
3DUWý1Rïýêíçðíéííðìíê
)LJýììïëèýý/HYHOýVHQVRUýFLUFXLWVâý3Lýõ6KHHWýëýRIýëô
Summary of Contents for 450 SI
Page 1: ...éííý6 5 6ý 217 18286ý 1 ý 7 7 1 ý0 18 ...
Page 2: ...ýý ...
Page 4: ......
Page 10: ...285 408 480 35 0 1 5 ý 1 250 7 21 õYLô LJýëýý3ULQWHUýFDELQHWýGLPHQVLRQVýõPPô ...
Page 144: ...6 7 21ýìíýðý7 1 ý 6 5 37 21 XQýäå VVXHýëïì 3DJHýìíïìíë 3DUWý1Rïýêíçðíéííðìíê ...
Page 340: ...6 7 21ýìëýðý 8675 7 ý3 576ý 67 XQýäå VVXHýëïì 3DJHýìëïêç 3DUWý1Rïýêíçðíéííðìíê ...