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Step
#09
1
hr
lOOK
Step
#08
4
OK
30
minutes
Step
#10
20 minutes
Model
Dwc-93C
section
VI
Step
#05
will look as follows.
6.8.3
Example
#3
-
Repeated
setpoint Ramp
Ilp,
soak, and
Ramp
DOwn
with
G a i n
Ramping
STEP #05
Step#.-.JTJMP
VECTOR 0 5 . 5 . 0 6
The ramp up, soak, and ramp down
Days
-
H O U ~ S
00
-
00
shown
in
Figure
6.3
will
be
seconds
0 0 - 0 3
repeated
indefinitely
in this
example.
The first part of the
setpoint
1 0 0 . 0
example is identical to that given
G a i n
10
in Example
#2
except that the gain
Rate
will be ramped up from
10
to
20
and
R e s e t
5
held at
20
for the
lOOK
soak (See
Figure
6.4).
Steps #07,
#08,
and
The command selected is
5
for
#09
and
#10
will be dedicated to
Setpoint ramp.
The
JUMP
VECTOR is
this example.
0 6
so that operation after the ramp
goes to Step
#06.
The setpoint of
step
#05
will be set to
lOOK
to
indicate where the ramping will
end.
Note that even if the t h e
were
selected
incorrectly, the
ramping would still end at
100K.
It is necessary to select the timer
increment per tenth to arrive at
the
lOOK
in the
30
minutes.
From
40K
to
lOOK
is
600
tenths. It
will require
600
increments of
3
seconds each to end up at
100K
in
30
minutes
(1800
seconds)
.
Thus
the setpoint will ramp up by
0.1K
every
3
seconds up to
lOOK
and will
reach
lOOK
in
30
minutes.
The reset will ramp from the value
given
in
Step
#04
to
those
specified in Step
#05.
The soak is covered by Step
#06
as
follows.
STEP
906
0
Step#.Comuand.JUMP
VECTOR
06.1.03
00
-
01
seconds
00
-
00
Days
-
H
m
setpoint
1 0 0 . 0
G a i n
10
Rate
0
R e s e t
5
After the soak, the next Program
Step will be Step #03 which has a
Command
9
and is explained at the
end of Example
#l.
COPYRIGHT
12/87
ISCI
Step #7,Dwell 10 minutes
Figure
6.3
Example #3-Setpoint
Step
#09
1
hr
20
10
Figure
6 . 4
Example #3-Gain
Step
#07
and
#08
are identical to
Steps
#04
and
#05
of Example
#2
and
are repeated here.
6-7
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