Digital inputs x (1 to 4), Figure 8.9 – Watlow Series F4P User Manual
Page 87
Wa t l o w S e r i e s F 4 P
I n s t a l l a t i o n a n d W i r i n g
■
8 . 9
Digital Inputs x (1 to 4)
Figure 8.9 —
Digital Inputs x (1 to 4)
Voltage input
0-1VÎ (dc) Event Input Low State
2-36VÎ (dc) Event Input High State
Contact closure
0-2k
Ω
Event Input Low State
> 7k
Ω
Event Input High State
Digital Input 2 (29)
Event Ground (27)
Internal Circuitry
Digital Input 4 (31)
Digital Input 3 (30)
Digital Input 1 (28)
+5V
Î
(dc) (32)
+5V
Î
(dc)
Digital Input 1 +28
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1 2
3
4
5
6
7 8 9
10
11 12
13
14 15
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
1
7 18 19
20 21 22 2
3
24
25
26
27
28 29
30 3
1
3
2
59
6
0
6
1
62
59
60
6
1 62
4
8
49
5
0
4
8 49
50
45
46 47
45
46
47
5
1
52 53
54
55
56
57
58
5
1
52
53
54
55
56
57
58
3
3
3
4
3
5
33 34
35
3
6
3
7
3
8
36
37
3
8
3
9
4
0
4
1
39
40
4
1
4
2
4
3
4
4
4
2 43
44
17 18 19 20 21 22 23 24 25 26 27 28 2
9 30 31 32
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Digital 3 +30
Digital 2 +29
Digital 4 +31
Digital In Gnd 27
Digital Input 1 28
-
+
17 18 19 20 21
22
23 24 25 26 27 28 29 30 31 32
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Digital 3 30
Digital 2 29
Digital 4 31
+5V
Î
(dc) 32
Voltage Input
Contact Closure
(add a 10k
Ω
pull-up resistor
for each active
input)
Digital In Gnd -27
10k
Ω
ç
WARNING: To avoid
damage to property and
equipment, and/or injury
or loss of life, use
National Electric Code
(NEC) standard wiring
practices to install and
operate the Series F4P.
Failure to do so could
result in such damage,
and/or injury or death.
ç
CAUTION: Maintain
isolation between analog
inputs 2 and 3, and
between analog input 1
and digital inputs 1- 4 to
prevent a ground loop. A
ground loop may cause
incorrect readings or
error codes. Failure to
follow this guideline
could result in damage to
equipment and product.