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V3 | DAB10, DST53, DST76 Operating Manual 31
7.3.1.3 Teaching in the sensor characteristics via the teach-in process
In addition to the manual parameterization of the sensor characteristics, you can also carry out
the parameterization via a teach-in process:
n
Offset teach-in ( Teach-In Offset/Taring )
n
Key value teach-in ( Teach-In Sensitivity )
During the teaching-in process, the amplifier electronics superimpose the filter Moving Average
over the input signal. The filter increases the precision for measuring the input signal.
7.3.1.3.1 Offset teach-in (Teach-In Offset/Taring)
With the Teach-In Offset/Taring function you can tare the sensor. Carry out the offset teach-in
after installation and ideally following several cycles at full load. The following options are avail-
able to you for the offset teach-in:
n
Via IO-Link (cyclic data)
n
Via one of the two I/O pins. In the factory settings SIO2 (DQ/DI connection) is assigned with
this function.
Example 1: Offset teach-in without pre-load
Characteristics of the sensor:
n
Nominal process value: 1000 N
n
Key value: 1.511 mV/V
n
Output signal in an unloaded state: 0.2 mV/V
Enter the nominal process value and the key value under Parameter | Customer Sensor Ad-
justment . The activation of Teach-In Offset under Process Data | PDO initiates the offset
teach-in. Subsequently, the value 0.2 is displayed under Parameter | Offset .
Example 2: Offset teach-in with pre-load
Characteristics of the sensor:
n
Nominal process value: 1000 N
n
Key value: 1.511 mV/V
n
Pre-load (sensor in a loaded state): 200 N
n
Output signal with pre-load: 0.502 mV/V
Enter the nominal process value and the key value under Parameter | Customer Sensor Ad-
justment . Now enter the pre-load 200 N in the parameter Teach-in.Offset Process Value . With
the above key value, 200 N result in a signal of 0.302 mV/V. Deducting this value from
0.502 mV/V results in the actual offset of 0.2 mV/V no-load. The activation of
Teach-In Offset
under Process Data | PDO initiates the offset teach-in. Subsequently, the value 0.2 is displayed
under Parameter | Offset .