Chapter 4 PAS Application Software General Meter Setup
72 Series PM172 Powermeters
Programming Analog Inputs
The PM172 can be provided with two optional analog inputs with options for
0-1mA, ±1mA, 0-20mA or 4-20mA input currents, depending on the order.
Inputs with 0-1mA and ±1mA options can accept ×200% overload currents,
i.e., can actually accommodate currents in the range of 0-2 mA and ±2mA.
The meter automatically converts the analog input readings received from
the analog-to-digital converter to the user-defined engineering scale and
shows the input values in true engineering units, for example, in volts, amps,
or degrees, with the desired resolution.
To configure the Analog Inputs in your device, select General Setup from the
Meter Setup menu, and then click on the Analog Inputs tab. If you are
programming your device online, analog inputs are designated as not
available if they are not present in the device.
The available options are described in the following table.
Option Range Description
AI type
0-1mA
±1mA
0-20mA
4-20mA
The analog input type. When connected to the meter,
shows the actual type received from the device. When
working off-line, select the analog input option
corresponding to your meter.
Zero scale
-999,999 to
999,999
Defines the low engineering scale (in primary units) for
the analog input corresponding to a lowest (zero) input
current (0 or 4 mA)
Full scale
-999,999 to
999,999
Defines the high engineering scale (in primary units) for
the analog input corresponding to a highest input
current (1 or 20 mA)
Dec. Places
0-3
The number of decimal digits in a fractional part of the
scaled engineering value
Value label
An arbitrary name you can give the analog input value
Always save your analog inputs setup to the site database in order to keep
the labels you give the analog inputs. They are not stored in your device.
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