Bas
i
c app
li
cat
i
on
3 9
4.3.4 Us
i
ng pushbuttons for s
i
mp
l
e ST OP / ST ART (Coast to stop)
Note. Th
i
s c
i
rcu
i
t w
ill
cause the contactor to drop out as soon as the ST OP button contact
i
s opened because
the ST ART
i
nput
i
s opened
tog
e
th
e
r
w
i
th th
e
R
UN
i
nput
, w h
i
ch over-r
i
des the ST OP M O DE RA MP funct
i
on.
W hen the ST OP button opens dur
i
ng runn
i
ng, the ma
i
n contactor w
ill
de-energ
i
se w
i
th
i
n 1 0 0mS, and the
motor w
ill
coast to rest under the
i
nf
l
uence of externa
l
factors e.g. fr
i
ct
i
on and
i
nert
i
a, or by us
i
ng an
externa
l
dynam
i
c brak
i
ng res
i
stor to d
i
ss
i
pate the rotat
i
ona
l
energy.
Not
e
. Th
e
CSTO
P
must b
e
h
i
gh fo
r
a
t
l
ea
st 50mS p
ri
o
r
to STA
R
T go
i
ng h
i
gh.
In order to a
ll
o w regenerat
i
on dur
i
ng the stopp
i
ng sequence an externa
l
l
atch
i
ng c
i
rcu
i
t must be emp
l
oyed to
contro
l
the ST OP / ST ART contacts (T 4 7 / 4 8 cannot be used), and the RUN
i
nput
i
s not contro
ll
ed from the
ST ART term
i
na
l
. See 4.3.5 Us
ng pushbuttons for ST OP / ST ART (W
See 6.5 C H A N GE P AR A METERS / ST OP M O DE RA MP.
T 4 7
LA T 1
T 3 4
C ST OP
T 3 3
ST ART
T 3 5
+ 2 4 V
T 4 6
C O N 2
T 4 5
C O N 1
ST OP
ST ART
C O N T A C T OR
C OIL SUPPLY
C O A ST
ST OP.
Must be
h
i
gh pr
i
or
to S T ART.
M AIN
C O N T A C T OR
IN TERN AL
C O N T A C TS
Interna
l
contacts + 2 4 V co
il
energ
i
sed
by (ST ART or J O G)
AND
CST OP
0 V
T 3 6
0 V
T 3 2
J O G
T 3 1
RUN
T 4 8
LA T 2
A ux
ili
ary contact on ma
i
n
contactor
i
n ser
i
es w
i
th
RUN for contactors w
i
th
O N de
l
ay > 7 5mS.
RC SNUBBER across
contactor co
il
..
T yp
i
ca
l
va
l
ues are
1 0 0 Ohms 1 W and
0.1uF both rated for
the co
il
supp
l
y vo
l
ts.
Stop mode
ramp de
l
ay.
Term
i
nated
by RUN
go
i
ng LO W
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