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9.6 Analog output
The device can optionally be equipped with an analog output.
Category
Source
Signal type
Scaling start
?
Scaling end
?
Response in case of a fault
?
Replacement value
Scaling start, scaling end
An input signal range is assigned to the physical output signal range by scaling. If, for example, a tem perature with
a range from 150°C to 500°C (input signal range) is issued via the analog output with sig nal type 0 to 20 mA (output
signal range), the zero point is set to 150 (corresponds to 0 mA) and the end value is set to 500 (corresponds to 20 mA).
The default setting corresponds to an input signal range of 0 to 100 (for example, an output level of 0% to 100% for a
controller output).
The following graphic shows the scaling for the example above with different output signals (y-axes).
V
V
mA
10
10
2
0
Response in case of a fault
The behavior in the event of deviation above or below the measuring range (out of range) can be con figured. The set-
tings made there also apply for probe/conductor breaks or probe/conductor short-cir cuits. This results in a safe state for
operation in the event of an fault.
The following table shows the fixed values that are output in the event of a fault - with the corresponding configuration.
Product:
Temperature controller XT-T1
Signal
Analog selector
No selection
0...10 V
0...20 mA
4...20 mA
2...10 V
-1999 to 9999 (0)
-1999 to 9999 (100)
Replacement value
Low value
High value
0 to 10 V
or
0 to 20 mA
mA
y
20
20
100 %
4
0
0 %
Revision 2.0 – Issue September 2018
Description
Analog signal that is issued on the analog output.
In the event of „No selection" a voltage of 0 V or 0 mA is
output (depending on the signal type).
Physical output signal
Voltage signal
Current signal
Current signal
Voltage signal
Start value of the input signal range
End value of the input signal range
Value of the output signal in case of a fault
Configurable value (see „Replacement value" pa rameter)
Fixed value for measuring range underflow/short-circuit
Fixed value for measuring range overflow/probe break
Replacement value for the output signal in the event of
a fault
(value range depending on the signal type)
150
500
E
°C
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