Ariens Path-Pro 136E User Manual Page 14

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Chapter
3
m
WARNING:
Doing a cold start
will cause all setup
parameters and files
to be lost. DO NOT
put DIP switch #1 in
the ON position
unless all
user-
programmed
information
is
to be
cleared.
14
Learning
the Series 920
-
A Sample Program in Action
This chapter
will
guide you through an easy sample program for the Series 920. You
can quickly grasp the necessary terms and concepts by entering and
observing
this
exercise.
If you feel that your
knowledge
of profiling controllers does not require a sample
program to learn the Series 920, skip this chapter.
A Brief Overview
This sample program wilt teach you the fundamentals of creating a ramping profile,
along with ways to expand that profile to its greatest versatility.
The program example will start with a simple ramp and soak profile. A ramp pro-
gresses from one set point to another set point over a period of time, or ramp rate,
expressed in degrees/time. Soaking then controls the length of time the temperature
is held at this level.
We will, then expand it to
multiple
ramp and soaks, add
JUMPLOOP
functions, per-
form an AUTOSTART, LINK to another profile, and finally perform a
WAITFOR
step.
At this point make copies of your Master Step Chart on Page 53.
to keep track of your program as you go.
It is a good practice
It is also a good idea to sit down and define
exactly what you want your program to do.
Enter Real Time of Day
First, set the Series 920s “real time-of-day,
24-hour
clock.” Remember the MODE
key is used to progress through the menus. The UP/DOWN keys are used to select
parameters and values, and remain flashing until you press the ENTER key.
1.
Press the MODE key until the SETUP menu appears. Press the ENTER key.
2.
At ACCESS, enter (0) with the UP/DOWN keys; press ENTER. This is your
calibration
(CALIB)
menu.
3.
Press the MODE key until HOUR appears in the alphanumeric display and press
ENTER. Note that hours are in a 24 hour format.
WATLOW
Series
920 User’s
Manual
Sample
Program,
Chapter
3
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