Watlow Electric Ramping and Profiling Microprocessor-Based Control SERIES 1500 - Manual (Page 18)

Sample Program
18 WATLOW Series 1500 User's Manual Sample Program, Chapter 2
!
CAUTION:
This sample pro-
gram will activate
some of the "Control
Outputs" and "Event
Outputs" on the
Series 1500 terminal
strips. To avoid any
damage to your
equipment while
running the sample
program, be sure all
Event and Control
Outputs are discon-
nected from the
Series 1500 termi-
nals. Or remove
power from any
external loads
attached to the
Series 1500.
Before you begin entering the program, notice three small lights (LEDs) on the
bottom half of the 1500's front panel. They are labeled "MNTR DATA" (Monitor
Data), "CHG DATA" (Change Data), and "CHG PARA" (Change Parameters). Press
the MODE key to move through these three modes as you read about each one.
Another LED, labeled "TIME" indicates when time is being displayed.
"MNTR DATA": While a program is running, you'll want to observe what's happen-
ing. Some items can be observed in the "ACTUAL" display and in the nearby top half
of the front panel: Actual Temperature or Relative Humidity, Events ON/OFF, etc.
But you'll also want to know which step is being performed, and the amount of time
remaining in the step.
You can monitor information in a running program by pressing the MODE key until
the MNTR DATA LED is ON. Then press the FCTN key until you are observing the
data you want. Right now you don't have a program entered, so no meaningful data
is available. As soon as you enter the sample program, use this mode to watch
things happen.
"CHG DATA": This is the mode where you'll enter program operating DATA (set
points, time interval for each step and Event Outputs). In this mode, you can also
change data or correct errors in the program. If you want to wait until a specific time
before doing something or to set up program loops, you also enter that information in
CHG DATA. With the CHG DATA LED on, pressing the FCTN key will move you
through the functions you can program.
"CHG PARA": Some Series 1500 information is more applicable to the overall
system than to just one specific program. This includes the "real time of day," system
maximum/minimum alarm limits and "PID Parameters" which tune the overall system.
This system-wide information is entered or changed in this mode.
Again – pressing the FCTN key selects functions while the CHG PARA LED is on.
Many of these functions are protected from accidental change by a "Guarded Ac-
cess" (GA) code before they can be viewed or altered. You'll learn the GA codes
soon.
Before You Begin…
Before you begin to enter your Sample Program, take this precaution:
!
Clear Memory, Set DIP Switches
To clear your Series 1500's memory, do a "Cold Start." Turn the power OFF, open
the 1500 and ensure that DIP Switches 2, 3, 5 and 6 are ON and that DIP Switches
1,4,7 and 8 are OFF. If you haven't done so already, attach the provided 107
Ω
resistor and a jumper (or jumpers for a T/C version) to each sensor input as de-
scribed in Chapter 1 under "Quick Wire." If you want to use your sensors, refer to
Chapter 3, Figure 11 for wiring. Then turn the power ON and press the "CLEAR" key
to clear the flashing alarm indication(s).