Docu-No.: 0590020601-EN Rev. 1.6.0
Page 19
Programming Reference
1
Calibration 1.2
1.2.2
Feedfactors sub-menu for motor driven feeders
Parameter
Definition
REFILL ARRAY
Feedfactor Array or
Density Array
ON
Refilling feedfactor storage array is on. The feeding
factor values are stored in these registers when the
gravimetric mode is active. During refilling, the stored
feeding factor values in conjunction with setpoint are
used to establish proper drive command.
OFF
The refilling feedfactor storage array is off. The last
average feedfactor just prior to refill is used in
conjunction with setpoint to control feeding during
refilling.
Input range: On or Off
Default: Off
Notes:
• When <ON>, the Refill Array routine checks that the array FF
Empty and FF Full are within 0.5 to 2.0 times the current average
feed factor, otherwise the FF array is cleared.
• If the feed factor changes more than 15% (0.5 times the service
variable RefArr DevLim), the refill array is cleared.
FEED FACT 1, 5, 9
FF Hopper Full
FF Hopper Mid
FF Hopper Empty
Display of the feeding factor values in the refilling feedfactor array.
These factors are calculated in the gravimetric mode and used
during refilling in the volumetric mode when the refilling array
registers are activated.
Full(9) = 10% below the top refilling limit.
Middle(5) = 50% below the top refilling limit.
Empty(1)= 10% above the lower refilling limit.
Note:
Consistency of values indicate little variance in bulk material flow
properties. This is ideal. Rapidly changing bulk density can affect
feeder performance over the refill range. This would be evidenced by
widely varying values of feedfactor. If the values vary highly,
consider modifying refill levels, both maximum and minimum, to
achieve more consistent feedfactors over the refill range.
Input range: Display only [MF@100%DC]
