Dwyer 16A User Manual
Page 13
n the
move
med
s the
rme-
each
ate a
uire-
sired
unc-
t all
enu.
mmer
0FF
.
ount-
one
sec-
ER
cure
avoid
units
Set
1SP
to the target value desired for the first ramp. This value is in actual units just
like
SP1
. If the control is programmed for temperature, then the SP displays are in
temperature. If the control is programmed for some other engineering unit, the SP is
set in that unit.
Press INDEX to continue. If Alarm 1 is programmed as an event (
AL1
=
EUnt
),
then
1A1
will appear. If you wish the Alarm 1 contact to function for this segment,
set
1A1
is set to
0n
. If not, set for
0FF
. Press ENTER. When
1A1
is set
0n
, the
Alarm 1 function will be active for entire period set
1t
above.
Complete setting the segment times (
2ti
. . .
16ti
), segment set point (
2SP
. . .
16SP
), and event alarms (
2A1
. . .
16A1
) to
0n
or
0FF
.
For unneeded or unused segments set the segment times (
2ti
. . .
16ti
) to
0
, and
set the segment set point (
2SP . . . 16SP
) to the same value as the last active set
point. A segment alarm may be set to indicate “end of run” at the segment number
you select.
The last menu item for the ramp / soak function is
PEnd. PEnd
determines what the
control does when the program has ended. You may choose to have the program
repeat (
LooP
),
HoLd
the last set point (
16SP
), revert to the local
SP1
, or turn the out-
puts off (
0oFF
).
It is important to remember that if you want the program to repeat, you must allow
the process to return to the same condition that existed when the program first start-
ed. Remember that the ramp function calculates the slope by drawing a line from the
beginning PV to the ramp target set point. If the PV at the end of the program is dif-
ferent than the PV at the initial start, the ramp will calculate differently.
Ramp / Soak Operation
When you wish to start the program, enter the Secondary Menu and set the
Pro9
menu item on
0n
. Return to the HOME position by waiting for the display to time out
or by pressing the UP ARROW & ENTER keys and then the
DOWN ARROW & INDEX keys.
The home display will read as it normally does. The HOLD indicator by the RUN /
HOLD key will be lit. To start the program press the
RUN / HOLD key for
three seconds. The HOLD indicator will go out, and the program will start.
To suspend the program at any time, press the RUN / HOLD key. Press the key
again to resume.
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