Maguire Products GRAVIMETRIC AUGER FEEDER MGF-ST, Instruction Manual

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M A G U I R E P R O D U C T S , I N C .
31
G R A V I M E T R I C A U G E R F E E D E R
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LIW LIW Polling Rate - LIW Mode only
Factory Default - MGF-4: 00010, MGF-8: 00010
The number of seconds between each poll of the LIW's steady rate. Faster rates may cause
issues with the ethernet stack. Slower rates may cause issues with the MGF detecting changes
in the LIW's steady rate.
RAP
Rate Adjust Percentage - Extrusion Following Only
Factory Default - MGF-4: 10050, MGF-8: 10050
This parameter has 2 parts, xx.yyy
The leftmore two digits (xx) are the number of seconds between each rate adjustment check
(10050 = 10 seconds). The three rightmost digits (yyy) are the lower threshold in grams per
minute (10050 = 5.0 g/m). If the target g/m rate falls below the yyy threshold, the time between
rate adjustment checks will change to xx. If the target g/m rate rise back above yyy threshold, the
time between rate adjustment checks will revert back to its original setting.
LLC LIW Lower Cap
Factory Default - MGF-4: 00010, MGF-8: 00010
Used for MLAN commands and LIW polling for continuous mode only. Stored as 1/10th LBS or
KGS per hour (depending on the weight units setting) (00010 = 1.0 lb/hr). When a new target
rate is received, it is checked against the LLC parameter. If the rate is equal to or below LLC,
then the PHR parameter will snap to zero.
TAT Target Adjust Threshold - Cycle mode only
Factory Default - MGF-4: 00025, MGF-8: 00025
Stored as 1/100th grams per second (00025 = 0.25 g/s)
When a cycle starts, the target grams per second rate (Shot weight / cycle time) is checked
against TAT. If the rate is below TAT, then the running motor time is halved, and the target motor
speed is doubled. This will continue until the target rate is above TAT.
Example: TAT = 00025 (0.25 g/s)
Shot Weight = 9 grams
Cycle Time = 88 seconds
this will result in a target rate of 0.102 g/s
Before the cycle starts, the MGF will see that the rate is below 0.25 g/s and adjust the run time
and motor speed to compensate for this. When the MGF runs it will have targeted a 0.409 g/s
rate over a 22 second period.
XFT Extrusion Voltage Filter
Factory Default: 02003
Used for filtering incoming extrusion voltage. The parameter is separated into 2 parts: vvv.ff
vvv = cap to zero voltage in 1/100th of a voltage ff = fluctuation filter in 1/100th of a voltage.
NOTE: ff is capped at 0.50V or xxx50
LCL
LCH Loadcell Low - Loadcell High LCL factory defaulted: 00040. LCH factory defaulted: 00080.
LCL and LCH are used for full weight loadcell calibration. The LCL and LCH parameters ensure
that the calibrated weight falls with a reasonable slope. If the full weight slope
is outside the LCL and LCH defined slopes, then an error message:
'** BAD LOAD-CELL **' will be displayed.
HRT High Rate Trip Point - Continuous and Extrusion Following only
HRT controls the adjustment to the ATP parameter. HRT is separated into 2 parts: xx.yyy
xx = new value for ATP yyy = trip point for changing ATP in grams / minute
1. If the current rate is above HRT (yyy) then adjust the ATP to HRT (xx)
2. If the current rate falls below HRT (yyy) then revert ATP back to previous setting.
ECT Error Count Tracking
ECT is used to specify the delay in error tracking when first starting as well as after an error
correction is made. This parameter is broken into 2 parts: xx.yyy
where xx = number of cycles (Cycle mode)
yyy = number of seconds (Continuous mode)