Impulse Constant Speed Sensor; Initial Zero Calibration Digits; Calibration Weight; Calibration Load - Siemens SIWAREX WP241 Manual

8.3.16

Impulse constant speed sensor

If known, you can directly enter the pulse constant of the connected sensor. The input is
made either in "Pulses per meter" or "Pulses per foot" depending on the selected unit. If the
pulse constant is unknown, it can be calculated automatically by the SIWAREX WP241 using
an exactly defined total belt length. Commands 70 and 71 are used for this purpose.
You will find more detailed information on using or determining the pulse constants in the
section Commissioning with speed sensor (Page 45).
Note
If the jumper is closed to protect data with verification capability, the parameter can no longer
be changed.
8.3.17

Initial zero calibration digits

Following calibration of the scale's zero point, the digit value from the A/D converter is stored
as the average value for the set number of belt revolutions. When zeroing the scale during
subsequent operation, a check is made to establish whether the deviation from this original
zero point does not exceed the defined limit.
Note
If the jumper is closed to protect data with verification capability, the parameter can no longer
be changed.
8.3.18

Calibration weight

The calibration weight corresponds to the test weight used for the span calibration. With
other calibration methods (test chain, amount of material, or automatic), the weight is
determined internally by the SIWAREX module in accordance with the reverse calculation.
Note
If the jumper is closed to protect data with verification capability, the parameter can no longer
be changed.
8.3.19

Calibration load

If a test chain is used to calibrate the scale, its belt load value can be entered.
SIWAREX WP241
Manual, 04/2014, A5E33713528A
Scale parameters and functions of the belt scale
8.3 DR 3 Belt scale parameters
77