Watlow F4P Series, User Manual, Page: 87 / 124

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
0-1V Î (dc) Event Input Low State
2-36V
Î
(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
1
0
1
1
1
2
1
3
1
4
1
5
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
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
59
6
0
6
1
62
5
9
6
0
6
1
6
2
4
8
49
5
0
4
8
4
9
5
0
45
46 47
4
5
4
6
4
7
5
1
52 53
54
55
56
57
58
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
3
3
3
4
3
5
3
3
3
4
3
5
3
6
3
7
3
8
3
6
3
7
3
8
3 9
4
0
4
1
3 9
4
0
4
1
4
2
4
3
4
4
4
2
4
3
4
4
17 18 1
9 20 21 22 2
3 2
4 25 26 27 28 2
9 30 31
32
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
Digital 3 +30
Digital 2 +29
Digital 4 +31
Digital In Gnd 27
Digital Input 1 28
-
+
17 18 1
9 20 21
22
23 24 25 2
6 27 28 2
9 30
31 32
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
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.