Watlow Series F4S/D User Manual Page 128

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12.6 Wiring Watlow Series F4S/D
Digital Inputs x (1 to 4)
Figure 12.6 — Digital Inputs x (1 to 4)
Voltage input
0 to 2VÎ (dc) Event Input Low State
3 to 36VÎ (dc) Event Input High State
Contact closure
0 to 2k Event Input Low State
> 23k Event Input High State
Digital Input 2 (29)
Digital Input Common (27)
Internal Circuitry
Digital Input 4 (31)
Digital Input 3 (30)
Digital Input 1 (28)
Digital Input Common -27
Digital Input 1 +28
1 2 3
4 5 6 7 8 9 10 1
1 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16
15 16
17 18 19 20 21 22 23 2
4 25 2
6 27 28 29
30 31 32
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
59 60 61 62
59 60 61 62
48 49 50
48 49 50
45 46 47
45 46 47
51 52 53
54 55 56 57 58
51 52 53 54 55 56 57 58
33 34 35
33 34 35
36 37 38
36 37 38
39 40 41
39 40 41
42 43 44
42 43 44
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
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
Voltage Input Contact Closure
(add a 10k
pull-up resistor
for each active
input)
10k
Digital Input Common -27
ç
WARNING:
To avoid damage to
property and equipment,
and/or injury of loss of
life, use National Electric
Code (NEC) standard
wiring practices to install
and operate the Series
F4. 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 to 4 to prevent a
ground loop. A ground
loop may cause incorrect
readings. Failure to
follow this guideline
could result in damage to
equipment and product.
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