LS-221-BL Technical Reference
Doc. #710220125
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4.3.1. Digital Optoisolated Inputs
A ll 1 6 in p u ts IN 0
÷
IN 1 5 m a y b e u s e d a s g e n e ra l-p u rp o s e in p u ts , a lth o u g h s o m e o f th e m m a y
h a v e a d d itio n a l fu n c tio n s . S ix m a y s e rv e a s s tro b e s fo r h ig h s p e e d p o s itio n c a p tu rin g . A P E 0
a n d A P E 1 a re d e d ic a te d a s in p u ts fo r tw o m u lti-tu rn a b s o lu te p o s itio n e n c o d e rs .
4.3.1.1. General Purpose Inputs
T h e o p to is o la te d in p u ts a re d e s ig n e d to w o rk w ith o p e n c o lle c to r o r c o n ta c t s e n s o rs .
97 3790 3b
Figure 13: General purpose inputs
In p u ts IN 0
÷
IN 1 5 re q u ire e x te rn a l + 2 4 V p o w e r s u p p ly. O n L S -4 2 1 -2 1 1 2 in p u t b o a rd , th e
o p e ra tio n p o w e r s u p p ly (O P S ) is u s e d to p o w e r th e in p u ts . T h e c o rre s p o n d in g s e n s o r s h o u ld
b e c o n n e c te d b e tw e e n th e in p u t a n d th e p o w e r s o u rc e g ro u n d . T h e s e n s o r s h o u ld b e a b le to
s in k 1 0 m A @ 2 4 V in o rd e r to a c tiv a te th e in p u t.
