Siemens SIWAREX WT241 Manual page 52

Commissioning
7.3 Commissioning via Quick Start routine
7.3.2.5 Zero calibration
You can determine the zero point following a successful speed calibration. Navigate to menu
item 1.2.2.0.
Figure 7-10
1. Make sure that the belt is running and empty.
2. Start the zero calibration using "Start calibration". A green display field "Zero calibration
running" appears. The procedure is stopped automatically following the defined number
of belt revolutions, and the new zero digits are displayed.
3. Import these using the "Apply new zero digits" button. Following importing of the new zero
point, the actual belt load is displayed as 0.0 kg/m or 0.0 lbs/ft.
Subsequently move on in the calibration menu to item "1.2.3 Span calibration" → Span
calibration (Page 52).
7.3.2.6 Span calibration
There are four options for the span calibration:
● Using test weights
● Using a test chain
● Using a material batch
● Automatically using entered load cell data
52
Zero calibration
SIWAREX WT241
Manual, 05/2015, A5E36046748A