Maguire Products VBD-150 Installation Operation & Maintenance page 34

VBD® - Vacuum Dryer®
Dispensing Parameters
VCH Vacuum Chamber High Level – weight - 00035
Amount of material dispensed into the Vacuum Chamber from the heating hopper.
Also known as the "Fill Weight".
VCL Vacuum Chamber Low Level – weight - 00005
Two conditions are triggered by VTL.
When in Clean Mode, the Vacuum Chamber fill valve will be open when the amount
of material in the Vacuum Chamber is at or below this weight. When starting in
Auto Cycle, the "material in Vacuum Chamber" warning will be triggered when the
amount of material is at or above this level.
RHH Retention Hopper High Level – weight - 00035
Amount of material (the high level) dispensed into the Retention Hopper from the
Vacuum Chamber.
RHL Retention Hopper Low Level – weight - 00005
Three conditions are triggered by RTL.
When in Clean Mode, the Vacuum Chamber dump valve will be open when the
amount of material in the Retention Hopper is at or below this weight. When
starting an Auto Cycle, the "material in Retention Hopper" warning will be triggered
when the amount of material is at or above this level. When in Auto Cycle, the
amount of material in the Retention Hopper must be at or below this level in order
for the Vacuum Chamber to dump.
BLK Bulk Density - Bulk density of the material in either pounds per cubic foot or
kilograms per liter (depending on the weigh unit of measurement in Loadcell
Setup).
Vacuum Chamber Fill Rate – grams/second – 00580
VFR
Learned fill rate of the Vacuum Chamber in seconds. Used to calculate a precise
Vacuum Chamber fill time.
VDR Vacuum Chamber Dump Rate – grams/second – 00580
Learned dump rate of the Vacuum Chamber in seconds. Used to calculate a
precise Vacuum Chamber dump time.
VFT Vessel Fill Time (Time in seconds) – 00035
The time in seconds that the Vacuum Chamber fill valve will be open assuming that
the Vacuum Chamber High Level (VTH) is not reached first.
VDT Vessel Dump Time - (Time in seconds) – 00035
The time in seconds that the Vacuum Chamber dump valve will be open assuming
that the Retention Hopper High Level (RTH) is not reached first.
Fill Lag Time (ms) – 00175
FLA
The time, in milliseconds, that is added to every vacuum chamber fill valve opening
operation. This compensates for the fill valve opening delay caused by the inherent
lag in any mechanical device.
34
Rev. August 31, 2016 – VBD-150
Maguire Products, Inc.