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Programming Reference
1.2 Calibration
Page 16
Docu-No.: 0590020601-EN Rev. 1.6.0
1.2
Calibration
Use the FF Calibration menu to perform feeder calibration.
If the VOL RATE function is activated in the Service Variable Index,
the volumetric rate will be calculated if a product bulk density is
entered in the PRODUCT CHANGE menu.
1.2.1
Calibration sub-menu
• Section
Parameter
Definition
INIT FF
Initial Feedfactor
Input of the starting feeding factor to determine the motor speed. The
Drive Command is calculated as follows (not for vibratory feeders):
DriveCommand(%) = 100 x (Setpoint/Initial Feedfactor)
The starting feed factor can also be calculated with the command
variable <AUTO F.F. CALIB>. Value of <0> will cause an Feedfactor
Alarm see page
The feeder will not run with a Feedfactor of <0>.
Input range: 0 to 99999
Default: 100 kg/hr
AVG FF
Average Feedfactor
The value shows the estimated mass flow value expected at 100%
drive command and is calculated as (not for vibratory feeders):
AverageFeedfactor = 100 x (Massflow/DriveCommand(%)
Average Feedfactor represents the massflow capacity of the feeder
and is affected by bulk material characteristics and the current
feeder mechanical configuration.
Notes:
• The feeder will not run with a Feedfactor of <0>.
Input range: Display only
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