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Z e r o p o i n t r e t u r n s p e e d
C r e e p s p e e d
( s e e s e c t i o n
7 - 2 - 4 )
/
S t o p s a t s t o p p e r
B e g i n d w e l l - t i m e
c o
P a r a
t o r q u e r e s t r i c t i o n v a l u e
I
ToFque r e s t r i , c t i o n
F i g .
7 . 5
Z e r o
p o i n t
r e t u r n
b y s t o p p e r
I n z e r o p o i n t r e t u r n ,
i f a
S T O P
i n p u t i s g i v e n w h i l e t h e n e a r -
p o i n t d o g i s
O N ,
z e r o p o i n t r e t u r n c o m p l e t i o n p r o c e s s i n g b e g i n s ,
a n d t h e
current
v a l u e i s c o r r e c t e d t o t h e z e r o p o i n t a d d r e s s .
7 - 2 - 2
Z e r o p o i n t a d d r e s s
"his function sets the corrected address at the kime of zero point
return.
At the point where zero point return is completed, the
current value is corrected to the zero point address data.
During positioning if the current value becomes confused, etc,, it
is necessary to perform zero point return and correct the present
address.
7-2-3
Z e r o p o i n t r e t u r n s p e e d
This function sets the speed at time
of
zero point return. In the case
o f
z e r o p o i n t r e t u r n b y z e r o - p o i n t
s i g n a l , t h e a d d r e s s i s c o r -
r e c t e d b y t h e f i r s t z e r o - p o i n t
s i g n a l a f t e r t h e n e a ' r - p o i n t
d o g ' s
c h a n g e f r o m
ON
t o OFF.
A c c o r d i n g l y ,
t h e s p e e d s h o u l d
b e
l o w e r e d
t o a m o d e r a t e c r e e p s p e e d b e f o r e t h e n e a r - p o i n t
d o g c h a n g e s
f r o m
O N
t o OFF.
A
s u f f i c i e n t l e n g t h s h o u l d a l s o
b e
m a i n t a i n e d
i n t h e n e a r - p o i n t
d o g .
-32-
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