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Gravimetric Batch Blenders w/Mitsubishi Control Chapter 8: Addendum 92
time as long as the target weight has not been changed. This allows you to open the gate for
several feeds using the same amount of time. You can then record the Dispensed Grams and
plot the standard deviation of the gate. The other purpose of this screen is to verify that the
dispensed weight displayed is correct. You can perform a meter and then pull the weigh
hopper to weigh the material on a gram scale. The value on the screen should match the
measurement on the gram scale. If it does not, then either the weigh hopper is not balanced
correctly or the scale calibration is not correct. Refer to the Troubleshooting Section of this
manual for additional details.
Advanced Weight Options Screen
This screen allows you to modify the weight filter, adjust the mechanical time to settle the
weigh hopper after dumping, adjust the mechanical time to settle after a feeder has introduced
material into the weigh hopper, adjust the Maximum Empty Weight of the hopper, and to
enable the batch weight data to be dumped to a printer every batch for diagnostic purposes.
The data that is dumped to a printer is the same data shown on the Recipe Screen. No
averaging is done with the data shown to the Customer. Targets vs. Actual are actually what
is in the batch without any “smoke and mirrors.”
The weight filter is the specialized filter algorithm that smoothes erroneous load cell
readings. The signal will be filtered more if this value is increased and less if decreased.
This setting should not be modified except by the developer except under unusual
circumstances.
Feed Algorithm Options Screen
This screen allows the user to configure how the blender metering algorithm works. The user
can adjust the Initial percentage of Target to Meter, the Allowed Underfeed value, the
number of retries before Double Gate Time, the allowed Weight/Sec Drop, and the Out of
Material retry limit.
Target Weight
Meter Data
Stop the Meter
Change Method
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Engineering
Only Directory
Weight Filter
Weight/Sec.
Filter
Print weight data
every batch
Adjust the limit for
“Hopper Over Max
Weight”
Adjust Settle Time
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Engineering Only
Directory