Ai Level (Adjustment And Calibration) - Samson Trovis 6400 Mounting And Operating Instructions

Operation
Modifying parameters in the Si level
1. Access the Si level as described above.
2. Select a parameter (Stn, TiF, TiF on/oFF, Si on/oFF) by pressing either the C or D key .
3. Press A key. The parameter flashes.
4. Modify setting or value, using the C or D key. Then, press A key to accept.
5. If an other parameter is to be modified, continue as described under 2.
Proceed as described below to exit the Si level.
Exiting the Si level
1. Press F key.
The process control station returns to the OPERATING level.

6.7.Ai level (adjustment and calibration)

This level is used to display the inputs Ai 1 to Ai 4 as standardized values.
When setting configuration block C14-2, the user can adjust zero and span for inputs Ai 1 to
Ai 4 or calibrate the input characteristic via 5 coordinates. This calibration procedure can
compensate for small non-linearities in the measurement of the connected transmitters. The span
can be calibrated for the controller outputs Y1 and Y2 and the analog output Ao 1.
The zero adjustment range is ±3 %, the span adjustment range is ±6 %.
Accessing the Ai level
The process control station is in the OPERATING level.
1. Press A key. I-O appears on the display.
2. Press C key several times until Ai appears on the display.
3. Press A key. Ai 1 appears in the lower line of the display, and the associated value is
indicated in the upper line of the display.
Exiting the Ai level
1. Press F key.
The process control station returns to the OPERATING level.
Displaying the analog inputs Ai 1 to 4 as standardized values
1. Access the Ai level as described above.
2. Select an input Ai 1 to Ai 4, using the C key. The associated value is indicated in the upper
line of the display.
3. Exit the Ai level as described above.
Requirements for calibration
In principle, the soldering jumpers used to define the inputs and outputs are assumed to be set
as required for the respective application (see section 4., p.14).
In addition, the following steps have to be carried out:
1. Set C14-2 in the CONFIGURATION level (see section 6.4., p. 36).
2. Press F key to exit the CONFIGURATION level.
Ai level (adjustment and calibration)
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