MAGUIRE FLEXBUS Lite, Установка, эксплуатация и обслуживание

Страница: 76 / 143

76
In the component 4 column, 1600 and 32000 indicate a flow rate of 50 grams per second. DATA line 3
dispense weight of 0.0 for component 4 and the component 4 is set to 00.0 percent confirming that
component 4 is not dispensing material.
The following information will help you determine what devices are in place on a blender.
Material Dispense Device: Approx. Grams per Second:
½” Auger Feeders, Micro Pulse Valves 0.5 - 02
1” Auger Feeders 06 - 10
Vertical Valves 20 - 40
WSB 100 - Slide Gates 250 - 450
WSB 220, 420 - 3” Round Slide Gates 500 - 900
WSB 240, 260, 440, 460, 940, 960, 1840, 1860 - 2” x 3” Slide Gates 500 - 900
WSB 240, 260, 440, 460, 940, 960, 1840, 1860 - 3” x 6” Slide Gates 3000 - 5000
Regrinds are always lower then naturals. Bulk density will also cause wide variations in flow rates.
ERROR CORRECTIONS: RATE NUMBERS: (DATA line 2)
The RATE numbers are used by the software, each cycle, to calculate material dispense times. They are
adjusted every cycle until flow rates stabilize. When a significant error is detected, the software adjusts the
RATE numbers.
The GRAM number is adjusted first. The TIME number (milliseconds) is changed only if the GRAM number
goes below 16,000 or above 32,000 (approximately). In this event both GRAM and TIME numbers are
doubled or halved to bring the GRAM number back to between 16,000 and 32,000.
This serves to keep all numbers as large as possible allowing for the most accurate math, but not so large
as to overflow the registers.
Only the GRAM number changes from cycle to cycle, except under the conditions noted above.
Check the GRAM number for a series of consecutive cycles. If it remains unchanged, then the dispenses
are accurate enough to not trigger error corrections.
The PRC parameter limits adjustments to 10 percent. Do not expect any single GRAM number change
larger than 10 percent.
A gradual decrease in the GRAM number indicates a slowing rate, a hopper that is becoming empty for
example. A jump in rate (increased GRAM number) occurs when the hopper is refilled.
If errors are occurring, but the GRAM number is NOT adjusting, check the NC parameter and the MI
parameter. These parameters control whether or not error corrections occur. Both are set and adjusted
automatically by the software. MI is set after each start up, after 10 cycles have run without retries. MI will
be set to indicate 50 percent of normal dispense rate expressed as grams per second.
NC adjusts slowly over extended periods of running. NC indicates, in grams, the upper limit of the error in
60 percent of the dispenses. A high number usually indicates poor flowing material. Vibration or drifting
load cells are other possibilities.