Watlow Electric Ramping and Profiling Microprocessor-Based Control SERIES 1500 - Manual (Page 22)

Almost Ready to Run
Remember that Step #1 was a “Wait Step.” Even though you press the “RUN” key,
you won’t see any action until the time you programmed into Step #1.
You may want to go back and adjust that time to a different value. There are various
ways to get back to Step #1 in CHG DATA mode. Your display is now reading “08 NX
0009”; it is waiting for you to continue programming or monitoring. Use the DOWN
key to put “0001” in the Data display and press ENTER. The display will show “01 WI”
(Step#l is a Wait Step). Now use the FCTN key to move through “HR," “MN,” and
“SC;” enter a time real time1 0 minutes from now.
Start Your Program!
The Wonderful Apple Pie Sample Program is all entered and ready. So press the
“RE-START’ key (upper front panel) to set the program to Step #1. Then press the
“RUN/HALT’ key to start the program.
Monitoring the Action
With the MNTR DATA LED lit, you can now use the FCTN key to check things out.
The control doesn’t seem to show much happening right now since Step #1 is a “Wait
Step.” Press the FCTN key. In one display you’ll see the “WT” (Wait for) time you
programmed into Step #1. 1500 is watching for its real time to match that
programmed time.
Now use the MODE key to move to the CHG PARA mode with the TlME LED also ON.
You can watch as real time approaches your programmed time. When the times
match, the step number changes to 02. You will also see the Ch-1 and Ch-2 Event
lights come ON to coincide with the Events you programmed for Step #2.
As the program runs its course, you can use the MNTR DATA mode and the FCTN
key to view the process. As you observe the varying data, the individual functions will
become quite clear. After you have observed the program for awhile, read the
following information to gain an even more detailed understanding.
CAUTION:
You now have a
basic under-
standlng of how
the Series 1500
handles a control
program. Please
read and then
continue to refer
to the following
fine points. The
“Helpful Hints”
sectlon will raise
your skills with
the Series 1500
to the highest
level.
Helpful Hints
Here are some Series 1500 fine points:
Halt Conditions
A. A Blank Step halts the Series 1500. A “Blank Step” is any step which is not
programmed. An “SP” will appear in the Function Display when you select
a Blank Step with the MODE key.
B. The Series 1500 can enter the HALT condition in two ways: It encounters a
Blank Step in a program, or you press the RUN/HALT key while a program
is running.
22 Series 1500 User’s Manual
Sample Program, Chapter 2