YASKAWA USAREM-A5A Bulletin page 39

7 . 3 . 1 R a t e d C u r r e n t and Cable Size (Cont'd)
Table 7 3 C a b l e
Type of Cable
Vinyl Cable (PVC)
600 V Vinyl Cable (IV)
Special Heat-Resistant Cable (HIV)
Notes
1 F o r main circuits, use cables of 600 V o r more
2 W h e r e cables are bundled o r r u n through a duct (unplasticized
polyvinyl chloride conduit o r metalic conduit), select t h e larger
cable size than listed considering the current drop rate of the cables
3 W h e r e the ambient (panel inside) temperature i s high ( 4 0 ' C t o
6 0 T ) , use heat-resistant cables
7 . 3 2 W i r i n g Precautions
S E RV O PA C K i s a d e v i c e f o r s p e e d c o n t r o l o f
1 0 00:1, a n d s i g n a l l e v e l o f s e v e r a l m i l l i - v o l t s o r
less. T h e f o l l o w i n g p r e c a u t i o n s s h o u l d b e t a k e n
w h e n w i r i n g .
(1) F o r s i g n a l l i n e s a n d P G f e e d b a c k l i n e s , u s e
t w i s t e d c a b l e s o r m u l t i - c o r e s h i e l d e d t w i s t e d -
p a i r c a b l e s ( Ya s k a w a D r a w i n g N o . D P 8 409 1 2 3 o r
DE8400 093).
Cable l e n g t h i s a m a x i m u m o f 3 m f o r r e f e r -
ence i n p u t l i n e s a n d a m a x i m u m o f 2 0 m f o r P G
f e e d b a c k l i n e s . U s e
l e n g t h .
(2) F o r g r o u n d l i n e , c a b l e s h o u l d b e a s h e a v y
as p o s s i b l e t o p r o v i d e C l a s s 3 g r o u n d ( g r o u n d
r e s i s t a n c e 1 0011 o r l e s s ) . M a k e s u r e t o g r o u n d
a t o n e p o i n t . I f t h e m o t o r a n d m a c h i n e a r e
i n s u l a t e d , g r o u n d t h e m o t o r .
(3) T o p r e v e n t m a l f u n c t i o n d u e t o n o i s e , t a k e
t h e f o l l o w i n g p r e c a u t i o n s :
Place n o i s e f i l t e r s , S E R V O PA C K a n d I / O r e f -
e r e n c e a s n e a r a s p o s s i b l e t o e a c h o t h e r .
Make s u r e t o m o u n t a s u r g e s u p p r e s s i n g c i r -
c u i t i n t o t h e r e l a y , e l e c t r o m a g n e t i c c o n t a c t ,
a n d s o l e n o i d c o i l s .
Make s u r e t o m o u n t a s u r g e a b s o r b i n g c i r c u i t
i n t o t h e r e l a y , e l e c t r o m a g n e t i c c o n t a c t , a n d
s o l e n o i d c o i l s .
R u n t h e p o w e r l i n e a n d s i g n a l l i n e , k e e p i n g
the d i s t a n c e t o 3 0 cm o r m o r e ; d o n o t r u n
them i n t h e s a m e d u c t o r i n a b u n d l e .
When t h e same p o w e r i s u s e d f o r S E R V O PA C K ,
as f o r a n e l e c t r i c w e l d e r o r e l e c t r i c a l d i s -
c h a r g e m a c h i n e o r w h e n a
noise s o u r c e i s p r e s e n t i n t h e v i c i n i t y , u s e
f i l t e r s i n t h e p o w e r a n d i n p u t c i r c u i t s .
T h e S E R V O PA C K u s e s a s w i t c h i n g a m p l i f i e r,
and s p u r i o u s n o i s e m a y b e p r e s e n t i n t h e s i g -
n a l l i n e . N e v e r l e a v e t h e t e r m i n a t i o n o f t h e
analog i n p u t w i r i n g o p e n .
Allowable Conductor
Temperature °C
—
60
75
t h e s h o r t e s t p o s s i b l e
h i g h - f r e q u e n c y
(4) R e m e d y f o r R a d i o F r e q u e n c y I n t e r f e r e n c e
( R . F. 1 )
S E RV O PA C K i s n o t p r o v i d e d w i t h p r o t e c t i o n f r o m
r a d i o f r e q u e n c y i n t e r f e r e n c e . I f t h e c o n t r o l l e r
is a d v e r s e l y a f f e c t e d b y r a d i o w a v e s , c o n n e c t a
noise f i l t e r t o t h e p o w e r s u p p l y .
(5) T h e s i g n a l l i n e u s e s c a b l e s w h o s e c o r e s a r e
e x t r e m e l y f i n e ( 0 . 2 t o 0 . 3 m m 2 ) . A v o i d u s i n g
e x c e s s i v e f o r c e w h i c h m a y d a m a g e t h e s e c a b l e s .
7 3 3 P o w e r Loss
T h e p o w e r l o s s o f S e r v o p a c k i s s h o w n i n Ta b l e
7 . 4 . T h e v a l u e s a r e c a l c u l a t e d u n d e r t h e f o l -
l o w i n g c o n d i t i o n s .
' J L (GD2L, 1 0 X 44 (GM2M)
• R e p e t i t i v e d u t y o f N = 0 - - 4 0 00 r / m i n i s 5%.
Table 7. 4 P o w e r Loss at Rated Output
Rated
Output
Output
Class Type Type Current
W
CACR-SR
±ADC
(HP)
50
(0.07) A5AU iR
100
(013) 01AB1 _ill
200
(0 27) 02AB1i:R
200V
300
(040) 03AB1i _ :R
500
(0 67) 05AB1: _ fl
700
(0 93) 05AB1' iRY3
50
(0 07) A5AB2: :R
100
01AB : R
(013)
100V
200
(027) 02AB2 i l l
300
(0.40) 03AB2i 13
*The regenerative resistor causes power loss when the motor
is decelerated T h e s e values show allowable maximum
value 01 mean power loss. W h e r e the motor is run at duty
cycle exceeding these values, a regenerative resistor should
be installed separately from SERVOPACK
Power Loss
Main Regenerative
Control
Circuit Resistance* Circuit
W
W W
1 0 ' 20
1 4 25 —
2 8 30 6
3 7 35 6
5 3 55 6
30
5 3 55
6
17 20
23 25 6
4 3 40 6
6 0 50 6
Total
w
50
55
66
71
91
91
50
61
76
86