Deif XDi Series User Manual

DESIGNER’S HANDBOOK 4189350049C EN Page 56 of 206
Input type can be changed from the XDi menu, the highlighted input type, in the example above, is used for a
4-20mA input, one of the most used analogue interface types for indicators.
Input type
Input parameter
range
AX1 Input to be
used
Marking
Input
resistance
Note
+/- 7.5 V
+/- 7 500 mV
High voltage
input
HVI (1,2
or3)
112 kΩ
Select the range that
best matches your
input voltage
+/- 15 V
+/- 15 000 mV
+/- 30 V
+/- 30 000 mV
+/- 10 mA
+/- 10 000 µA
High current
input
HI (1 or 2)
< 65 Ω
(50 Ω*)
Select the range that
best matches your
input voltage
+/- 20 mA
+/- 20 000 µA
+/- 1 V
+/- 1 000 mV
Low voltage input
LIV (1 or 2)
1 kΩ
The low input is used
for both low current
and low voltage.
+/- 2 V
+/- 2 000 mV
+/- 1 mA
+/- 1 000 µA
Low current input
+/- 2 mA
+/- 2 000 µA
*) The resistance used to measure the current excl. the resistance in the poly-fuse.
5.6.3 Analogue scaling
In the VS profile, each analogue input used is pre-configured to scale the incoming analogue signal to the correct
output values that fit the data type it sources data to.
The example below shows the setup menu for a typical scaling of an analogue RPM 0 to 200.0 RPM input
represented by a 4-20 mA input signal. The analogue input is configured in the VS to use 2 point calibration (or
scaling); this requires 2 sets of scaling points:
Input
Value
Note
Input point 1
4 000
in µA equal to 4.000 mA
Output point 1
0
0.0 RPM @ x0.1 res.
Input point 2
20 000
in µA equal to 20.000 mA
Output point 2
3000
300.0 RPM @ x0.1 res.
Input point 1/output point 1 defines that 4000 µA (4 mA) is representing 0.0 RPM, and 20 000 µA (20 mA) is
representing 300.0 RPM. Please note that the standard RPM resolution of x0.1.

Deif XDi Series Specifications

General

Brand	Deif
Model	XDi Series
Category	Measuring Instruments
Language	English