Scale Interval; Zero By Power-On; Zero By Power-On When Tare ≠ 0; Automatic Zero Adjustment - Siemens SIWAREX WP251 Manual

Scale parameters and functions
8.3 DR 3 Calibration parameters
The calibration weights must be at least 5% of the nominal load of the scale and must differ
from one another by an amount of at least 5% of the nominal load.
● Calibration weight 0 = 0 kg
● Calibration weight 1 = at least 5% of the nominal load of the scale
● Calibration weight 2 = at least 10% of the nominal load of the scale
The calibration digits are determined automatically by the calibration commands and
assigned to the respective calibration weights. Therefore, the digits do not have to specified!
8.3.9

Scale interval

The numerical increment for the weighing range can be specified in accordance with
EN 45501 (0.0001 to 50). It defines the smallest indicated weight change and conforms to
the accuracy of the overall system for scales requiring official calibration.
8.3.10

Zero by power-on

The scales can automatically be set to zero when the supply voltage is switched on (in legal
trade operation, this is at the end of the startup waiting time). A weight of ±10 % of the
maximum measuring range can be set to zero by power-on for legal trade scales.
NOTICE
If the scales are not being used in legal trade operation (no OIML restrictions), fully loaded
scales can also be set to zero once this function is enabled. The function can, however, be
limited by setting a maximum and minimum weight for zero by power-on. See the section
on maximum and minimum weights for zero by power-on.
8.3.11 Zero by power-on when tare ≠ 0
The scale can be automatically set to zero when the supply voltage is switched on. If the
Initial zeroing (Page 68) function is enabled, this still does not specify whether the initial
zeroing is also to be performed when the tare weight in the tare memory is not equal to zero.
If the "Initial zeroing if tared" parameter is set, the tare weight is also be cleared upon initial
zeroing; if the parameter is not set, the scale is not set to zero.
8.3.12

Automatic zero adjustment

If necessary, the scales can be set semi-automatically to zero by the user by means of the
"Zeroing" command.
68
SIWAREX WP251
Manual, 12/2015, A5E37203357A