ABB AC 31 User Manual

Programming
Page 5-44 ABB Control - AC 31
1SBC 260400 R1001-b 06.99
5.10.2. Processing an analog input
The following example shows how to process the measurement of a distance sensor.
Measured
physical value
Voltage +10/-10V Power +20/-20mA Power 4-20mA Value read in the
central unit
100 m 10 20 20 32760
y m x
0 m 0 0 4 0
-10 -20 -32760
The value read in the central unit should be scaled in order to be expressed in meters so that
the information may be sent, for example, to a display. In this case the measured value
y is
such that:
y = (100 * x) / 32760
*
:
Z1*
Z2:
Z3 A1
%IW63.00
VAL_32760
VAL_100
METERS
It is not necessary to scale values to carry out comparison tests (equal, greater, lesser...). The
compared values can be those read in the central unit.

ABB AC 31 Specifications

General

Brand	ABB
Model	AC 31
Category	Controller
Language	English