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Soak Step
A Soak step maintains the set point from the previous
step for the time in hours, minutes and seconds entered
into the step. It is not necessary to enter a set point for
this step, only the time duration, the event output states
and the Wait-for Process function. The Wait-for function
can be enabled or disabled from the Wait-for Process En-
able [WF; P ] for each individual Soak step. The Wait-for
Process function causes the controller to pause the timer
until the process value passes through the Wait-for Pro-
cess value [WPr]. Once the Wait-for Process value is
satisfied, the Wait-for function is not active until the step
runs again.
Note: If you have Guaranteed Soak Deviation enabled, the Wait-
for Process function is satisfied once the process enters the
Guaranteed Soak Deviation window.
* The Lockout parameter in the Setup Page determines your
level of access to the other pages and menus, including the Pre-
Run and Run menus.
Jump-loop Step
A profile can jump forward or backwards from any step,
except Step 1 of any file. You cannot jump-loop to the
step that you are on.
Jump-loop example:
Step 1 [ Stpt] Set Point Step
Step 2 [Stpt] Set Point Step
Step 3 [SoaH] Soak Step
Step 4 [ Stpt] Set Point Step
Step 5 [``JL] Jump-loop
[~~JF] = 1 [~~JS] = 2 [~~JC] = 1
Step 6 [~End] End
In this example the program will execute steps 2 through
4 a total of 2 times. This includes the initial pass and the
pass associated with the Jump Count of 1. Following the
second pass, the End step (Step 6) will be executed and
the program will end. The Jump Count can be any num-
ber from 0 to 255. If you enter 0, this will be an infinite
loop and never progresses to Step 6. When Jump File is
not set to the current program file, the profile may jump
to any step of any programmed files.
Link File Step
The Link File step enables you to link any step other
than the first step of a profile to the first step of another
profile. Linking profiles allows for a simple method to
effectively extend the number of steps available in a
profile. All four profiles of the Series SD can be linked
together to effectively give you a profile with 40 steps.
However, each link step consumes one of the available
profile steps and Step 10 of each profile is an End step. If
you link File 1 to File 2, File 2 to File 3 and File 3 to File
4, only 34 steps would be available to perform the actual
functions of a user's profile. In this example, linking the
last profile to the first profile causes the profile to run
endlessly.
Watl o w S eri es SD
End Step
The End step ends the profile and selects the status of
the control set point and event outputs when a profile
finishes. When Hold [hoLd] is selected, the control set
point and event outputs maintain the same state they
were in before the End step was executed. When selected
as Off [~Off], the control set point will be set to off (con-
trol outputs off) and any event outputs will be set to the
off state.
Event Outputs
The flexibility of the Series SD allows configuration of
any available output as an event output. An event output
is simply an output that can be turned on or off through
a profile step, or manually from the front panel if a pro-
file is not running. The event may turn any number of
peripheral devices on or off to assist you in controlling
your process or system. For instance, an environmental
chamber might need to energize a fan to circulate air at
a given time in your profile for one or more steps. The
chamber might need to turn lights on or off, lock out the
humidification system or activate a video recorder. Each
output can be configured as an event output on the Setup
Page. Once configured, the option to set an event output's
state appears while programming the steps in a profile.
The state can be selected as on or off for each set point
step and soak step in the profile.
Guaranteed Soak
The Guaranteed Soak Deviation feature insures that the
actual temperature tracks a programmed profile within
a window around set point. See figure below. If the devia-
tion value from set point is exceeded, the timer function
pauses, and the lower display alternately flashes between
[`gSd] and the current parameter until the process
variable returns within the deviation window. Setting
[gs; d e] to [~yes] enables the Guaranteed Soak Devia-
tion function. When enabled, it applies to all steps within
the profiles. Programmed in degrees or units, the value
entered for Guaranteed Soak Deviation sets up a plus
and minus deviation around the set point. [gS; d E] and
[~gSd] are located on the Setup Page. The [~gsd] pa-
rameter can also be added to the Operation's Page.
Note: If you have Guaranteed Soak Deviation enabled, the Wait-
for Process function is satisfied once the process enters the
Guaranteed Soak Deviation window.
53
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Set Point
Guaranteed Soak
Deviation Window
around Set Point
Chapter 1 0 Pr ofi li ng
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