Watlow Series F4S/D - Manual (Page 128)

1 2 . 6 ■ W i r i n g Wa t l o w S e r i e s F 4 S / 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
Ω Event Input Low State
> 23k Ω 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 1615 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 6259 60 61 62 48 49 5048 49 50 45 46 4745 46 47
51 52 53
54 55 56 57 58
51 52 53 54 55 56 57 58
33 34 3533 34 35 36 37 3836 37 38 39 40 4139 40 41 42 43 4442 43 44 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3217 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 3217 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
Ω
pull-up resistor
for each active
input)
10k Ω
Digital Input Common -27
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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.
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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.