6
mine at what batch count value the prewarn relay should turn OFF by subtracting the
batch prewarn preset from the batch final preset. Assume batch prewarn is set to 3.
When filling 55 gallon drums, the prewarn relay shuts off the main valve when the
batch reaches 52 gallons (55 minus 3). Should the operator decide to fill 30 gallon
drums, he simply changes the batch final preset to 30. The batcher would then shut
off the main valve when the batch reaches 27 gallons (30 minus 3). Although the
installer knows that prewarn operation is the result of careful planning, to the opera-
tor this has the appearance of magic. The batcher always “knows” when to shut off
the main valve, regardless of the preset batch size. If the operator concludes that the
installer has the power to create the mythical “anticipating relay”, it is not our duty to
confuse him with the facts.
Already some installers are thinking of other ways to use the batch control outputs.
For instance, some may wish to use the batch final relay to control a valve, and the
batch prewarn relay to operate a pump. This manual simply cannot cover all the
possibilities.
Once installed, normally only the front panel of the Eclipse batcher will be visible. It
will look like this:
PGM
View
Edit
Enter
Start
Reset
Stop
PGM
BATCH
Four Input Keys
Six digit
LED
Display
Program
Mode
Indicating
LED
Durant
The LED display dominates the front panel. The operator will view various counters,
presets, and the rate on this display. The installer will view and edit programming
selections on the display.
The four input keys have operator and installer functions. The operator may use
them to change display screens from count, to preset, to rate, etc. and possibly to
reset counters. The operator may also use these keys to start, stop, resume, and
terminate batch delivery.
The program mode indicating LED lets the installer know that he is in the program
mode when it is ON. This LED will flash ON and OFF for the operator when a batch
is running. Once a batch has been stopped, either manually or automatically, the
LED will remain OFF until another batch is started.
The installer is probably now thinking “well, it seems that we have batch delivery
pretty well covered, but how about those totalizer functions that this thing is sup-
DESCRIPTION cont.
