Electro Cam PLUS PS-5000 Series, Programming & Installation Manual

Page: 58 / 81

Mode 2 Operation
Appendix A-6
Detail s of Mode 2 -
Alter Po s ition and Enable Output s
An o u tp u t gro u p oper a ting in Mode 2 only h as it s o u tp u t s
en ab led a fter a n inp u t s ign a l h as occ u rred. The s t a rt
(le a ding edge) of a n inp u t s ign a l in s t a ntly c aus e s the gro u p’ s
po s ition to b e re s et to zero. The o u tp u t s will immedi a tely
b e en ab led to cycle, a nd will s t a y en ab led u ntil the next
inp u t window i s re a ched.
The inp u t s ign a l a ct s in a moment a ry m a nner. Therefore it
doe s n’t m a tter how long the inp u t rem a in s energized. The
re s et oper a tion will occ u r when the le a ding edge of the
inp u t s ign a l occ u r s . However, once the re s et occ u r s , the
control di sa rm s the inp u t a nd ignore s it u ntil it b ecome s re-
a rmed. A progr a mmed window determine s where the inp u t
will b ecome re- a rmed (re- a rming the inp u t i s s imil a r to
cocking a g u n - once it i s re- a rmed it c a n fire a t a ny po s ition).
The o u tp u t s a re di sab led when the next inp u t window i s
re a ched.
The inp u t window i s progr a mmed in the sa me m a nner as
o u tp u t p u l s e s a nd i s referenced to the corre s ponding gro u p
po s ition. Ch a nnel 91 i s the window for Gro u p 1, Ch a nnel
92 for Gro u p 2, a nd s o on u p to Ch a nnel 9 8 . The po s ition
of the window determine s where the o u tp u t s b ecome
di sab led a nd where the control s t a rt s looking for the next
inp u t s ign a l s o the proce ss c a n repe a t. Note: If no window
i s pro g rammed, output will become active if input i s
activated and will remain active.
The po s ition reference th a t i s e s t ab li s hed b y inp u t s ign a l s
doe s not get s tored in the control’ s perm a nent memory.
However, it i s not import a nt in Mode 2 s ince the o u tp u t s
will b e di sab led u ntil a n inp u t s ign a l occ u r s . On power u p,
the inp u t i s a rmed, the o u tp u t s a re di sab led a nd the fir s t
inp u t s ign a l received will c aus e the po s ition to immedi a tely
re s et to zero.
PGM CHN
FCN
ON PUL S E OFF
VIEW VIEW
1 2 3
4 5 6
7 8 9
0
DEC
CLR
CLE
ENT
INC
ON/OFF
S ETPT
PO S
RPM
MOTION
POWER
CPU
5000
S erie s
Pro g rammab le Lim it S witch
0)
1)
2)
3 )
4)
5)
Off s et
Motion
Detection
Active
Progr
a m
S peed
Compen sa tion
DEG/1000 RPM
Timed
O
u tp u t s
Progr a m
En ab le Code
Gro u p 1 O u tp u t
Gro u p 2 O u tp u t
Addition a l o u tp u t gro u p s c a n b e
controlling other m a chine f u nction s
in different “ mode s” as needed
Gro u p 1 En ab le Inp u t (re s et s
Gro u p 1 po s ition a nd a ctiv a te s
Gro u p 1 o u tp u t s )
Conveyor
Gro u p 2 En ab le Inp u t (re s et s
Gro u p 2 po s ition a nd
a ctiv a te s Gro u p 2 o u tp u t s )
Gl u e He a d s
S en s or
Gl u e Be a d
S en s or
One re s olver provide s tr a vel
inform a tion for b oth gl u e he a d s
Example Application: Control different
machine function
s a s ynchronou s ly, on
demand
Thi s ill us tr a tion s how s a PL
μ
S control a nd one
re s olver “ independently ” controlling two gl u e
he a d s a t different loc a tion s on a conveyor. The
s p a cing b etween p a rt s b eing gl u ed i s random .
E a ch o u tp u t gro u p in s t a ntly re s et s it s control
po s ition when it s en ab le inp u t energize s . The
o u tp u t s in the gro u p then b ecome a ctive for u p
to 3 59 degree s .
R a ndom s p a cing b etween p a rt s i s au tom a tic a lly
h a ndled b ec aus e e a ch s en s or c aus e s the
po s ition of it s o u tp u t gro u p to re s et. Thi s
reference s the o u tp u t s ign a l s to the le a ding
edge of the p a rt b eing gl u ed. When p a rt s a re
not pre s ent the o u tp u t s will b e in a ctive.
Mode 2 Example Application
How to Pro g ram Mode 2 Operation
1. Progr a m FCN 8 a nd FCN 9 to correctly e s t ab li s h the
o u tp u t gro u ping a nd mode s re qu ired for thi s m a chine
a pplic a tion (in su re th a t Mode 2 i s s elected for thi s gro u p).
2. Progr a m the inp u t window (CHN 9X) to s t a rt a t 3 55 a nd
end a t 3 59 as initi a l v a l u e s .
3 . M a n ua lly cr a nk or jog the m a chine thro u gh a cycle with
a prod u ct pre s ent. After the re s et occ u r s ( s en s or detect s
s t a rt of prod u ct), record the gro u p po s ition v a l u e s where
e a ch of the gro u p o u tp u t s need s to cycle on or off.
Progr a m the s e v a l u e s into the corre s ponding o u tp u t s .
4. Progr a m the inp u t window (CHN 9X) to s t a rt b efore the
next v a lid inp u t s ign a l le a ding edge will occ u r. The s t a rt
of the inp u t window m us t b e a fter the l a te s t o u tp u t off
po s ition recorded in s tep 4 (the s t a rt of the window
di sab le s the o u tp u t s ) a nd b efore the next inp u t s ign a l
le a ding edge. S et the end of the inp u t window to a
po s ition th a t i s a he a d of the e a rlie s t po s ition where gro u p
o u tp u t s s t a rt cycling on.
Note: The gro u p inp u t window (CHN 9X) a nd the gro u p
o u tp u t po s ition s etpoint s m us t b e progr a mmed individ ua lly
for e a ch of the controller progr a m s us ed. Different progr a m s
c a n h a ve different v a l u e s as re qu ired.
If the o u tp u t gro u p f a il s to oper a te when the m a chine i s r u n
with prod u ct pre s ent, in su re th a t the gro u p inp u t le a ding
edge occ u r s a fter the fir s t progr a mmed window (CHN 9X)
a nd th a t the inp u t i s wired to the control correctly.
The flow ch a rt to the right det a il s how Mode 2 oper a te s .