Siemens SIWAREX WT241 Manual page 54

Commissioning
7.3 Commissioning via Quick Start routine
7.3.2.8 Span calibration by test chain
In the case of a calibration by test chain, the calibration is not carried out using defined
weights but by using a specific belt load which is placed onto the scale in the form of a test
chain.
To do this, move on in the calibration menu to item "1.2.3.2 Span calibration by test chain".
Figure 7-12
1. Enter the used calibration load in the field "Calibration load".
2. Position the test chain on the belt such that it rests on the complete, effective belt length.
Information on positioning of the test chain can be obtained from its enclosed instructions
if applicable.
3. Start the calibration procedure using "Start calibration". The procedure is automatically
terminated following the set number of belt revolutions. The new span digits are then
displayed in the right-hand column as well as the percentage deviation from the
previously used calibration digits (if applicable).
4. Import the newly determined digits using the "Apply new span digits" button. The belt load
shown at the top of the screen corresponds to the specified calibration load following
successful importing of the span digits. Commissioning has then been completed.
Additional parameter settings can also be made, for example:
● Setting of limits for belt load, speed, and material flow rate
● Filter settings
● Parameterization of the inputs/outputs of your weighing module
Further information on these and all other parameters can be found in chapter → Scale
parameters and functions of the belt scale (Page 59).
You can return to the main screen using the "Home" button (house symbol).
54
Span calibration by test chain
SIWAREX WT241
Manual, 05/2015, A5E36046748A