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Analog output zero scale and full scale values

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Configure your analog output’s zero and full scale values.

In most cases, your meter’s analog output range matches the range of the analog sensors that your meter’s outputs are connected to. In that case, your meter’s analog output zero scale and full scale values are the maximum and minimum values of the source driving your meter’s analog output. These values are used to normalize the source value to a value between 0 and 1 which is applied to the operating range of the analog output port to determine the analog output current or voltage. For example:

Source value Analog output register values Meter’s analog output signal

0 to 120 kW range

100 kW

Full scale = 120 (kW)

Zero scale = 0 (kW)

Normalized: 0.83

4 - 20 mA range

Output: 17.33 mA

0 to 120 kW range

100 kW

Full scale = 120 (kW)

Zero scale = 0 (kW)

Normalized: 0.83

0 - 20 mA range*

Output: 16.67 mA

If your meter’s analog output range does not match the range of the connected analog sensor, you must calculate the full scale and zero scale values by analyzing the system.

Related topics: See the ION Reference, available from www.schneider-electric.com, for detailed information about the Analog Output module and full scale and zero scale calculations.

See the ION Reference, available from www.schneider-electric.com for detailed information about the Analog Output module and full scale and zero scale calculations.

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