Maguire Products WEIGH SCALE BLENDER WSBMB Series, Installation Operation & Maintenance

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M A G U I R E P R O D U C T S , I N C .
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W E I G H S C A L E B L E N D E R
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in order to maintain proper requested ratios. A recalculated target is not allowed to exceed
the value held in the MAX parameter.
If you change the FUL parameter, the MAX parameter will automatically be set to a value
50 percent higher than the FUL setting.
DISPENSE STATION CONFIGURATION.
This controller can be configured to operate as a dispense station (model WSD). This is
generally done when exact weights of material or blend are required to place into a
process, such as rotational molding. In this configuration, the thumbwheel switches tell the
controller how much weight to dispense in pounds (or kilos). The FUL parameter is set to
00001 or 00002 for direct reading of the top thumbwheel switch; or optionally, for recipe
reading of the second thumbwheel switch.
When dispense weight you request exceeds the amount specified in the MAX parameter,
the unit will automatically make multiple dispenses that will add up to the requested
amount.
TH
TL
Change only if material sticks in the weigh bin
TH and TL are acceptable error limits for TARE WEIGHT.
Before a dispense cycle begins, the software checks to see that the weigh bin is in place
and that it is not already full of material. To do this it looks at the starting TARE weight.
If Tare weight is below the value of TL, (50 grams), the software assumes that the bin is
either missing or hung up on something. In this case the ALARM sounds.
If Tare weight is above the value of TH (100 grams), the software assumes material is in
the bin. In this case the ALARM sounds and the weight bin dump flap operates to empty
the weigh bin.
If you are processing a material that tends to hang up in the corners of the bin, then you
may wish to widen the range of acceptable starting tare weight. Since tare weight is
always subtracted from dispense weights, these errors do not affect accuracy.
PRT
Change to get AUTOMATIC printing of material totals
PRT, when set to any number other than zero, will cause the processor to output all current
material usage totals, at regular time intervals, to the printer port. The number you enter
will dictate the time interval in MINUTES. All timing starts from MIDNIGHT. For example,
an entry of 00120 will cause totals to print at 2 AM, 4 AM, 6 AM, etc. Printing always waits
until a cycle has just ended. A setting of 10000 is a special case. This will cause a printout
after every cycle. A printer must be connected. If one is not, the routine will abort, and
blending will continue.
DLY
Consider changing if mixing is a problem
DLY is the TIME the mix chamber level sensor must be uncovered before a cycle begins.
The sensor must be uncovered without interruption for the full specified DELAY time. To
prevent false starts from material movement caused by the mix blade, a minimum of 2
seconds (00488) is recommended.
Sometimes throughput is slow enough that each new batch buries the mix blade for a
while. When this happens the material on top does not mix well. To reduce this, you can
delay the start of a new batch by increasing the DLY parameter. The new batch is
delayed, and mix chamber level has time to fall before the next batch is added.