KEP MINI-BATCHER MB2, Installation & Operating Instructions Manual

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6
THEORY OF OPERATION
Relay B Operation
Relay B can be programmed as a prewarn relay or
grand total/batch counter alarm.
When Relay B is set for Prewarn, Relay B will ener-
gized when the batcher is started. Relay B will drop
out when the count is at the selected number (Preset
B) before final Preset A. This is often used for slow
down (2 stage batching).
When Relay B is set for total (Batch or Grand Total),
Relay B will energize for the selected time duration
when the Batch/Grand Total reaches Preset B. If the
Relay is set to latch, it can be reset by resetting the
Batch/Grand Total. (as described above).
Relay B as Scaled Pulse Output
To use output B as a scaled output proceed as follows:
1) Select
gr tot
under
count
section of menu.
2) Select
tot
under
relay
section of menu.
3) Enter the desired duration for the B Relay.
4) Set Pre B at desired scaling ( pre b is a divider).
Maximum output frequency is 15 pulses/second.
Presets
Preset A can be viewed and changed by pressing the
"PRE A" button. The present Preset A will appear.
Press buttons "A" through "E" to load in desired Preset
A. Press the ENTER button once to enter.
Preset B can be viewed and changed by entering the
program menu. Press the PRGM button. PRE B will
appear. Press ENTER. The present Preset B will
appear. Press buttons "A" through "E" to load in de-
sired Preset B. Press the ENTER button once to enter.
VIEW Button
The VIEW button allows you to alternately view:
1. Count of "A" (Batch)
2. Rate of "A" (Batching speed)
3.* A) Grand Total if " gr tot " is selected
B) Number of Batches if "
BA tot
" is se-
lected
* All decimal points are inverted when Grand/Batch
Total is being displayed.
Batching
After the batcher has been programmed, it will operate
as follows:
The unit will reset to "0" (count up mode) or load
Preset A (count down mode) when RESET/STOP is
activated. (front button or rear input)
When Start (front button or rear input) is activated,
Relay A (and Relay B if Prewarn is selected) will ener-
gize and the right decimal will light. The unit will count
in engineering units corresponding to the input scaling.
If Prewarn is selected for Relay B, Relay B will drop out
when the count is at the selected number (Preset B)
before final Preset A. When Preset A (or "0") is reached,
Relay A drops out and the right decimal turns off. (The
right decimal turns on whenever Relay A is energized).
At the end of the batch the display is immediately
loaded with "P" and Preset A number. At this point you
can:
Press START to reset and start another batch
Press PRE A to change Preset A
Press VIEW to view count (over-run)
Press RESET/STOP to reset to "0" (Preset A)
If RESET/STOP is activated while the unit is started,
Relay A (and Relay B if Prewarn) will drop out and the
last count will remain on the display. Press START to
continue the batch or RESET/STOP to abort the batch.
All starts are inhibited if RESET/STOP is held active.
Grand Total or Batch Counter
The second counter (displayed with inverted decimals)
can be programmed as a Grand Total or Batch counter.
The Grand counter counts the grand total, the Batch
counter counts the total number of complete batches.
These counters can only be reset from the front panel
while viewing them. To reset, press the VIEW key until
the displays shows a number with all decimals lit. Press
RESET/STOP to reset.