SIEMENS
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Siemens IC 10 · 2017
Relays
SIRIUS 3RS14, 3RS15 temperature monitoring relays for IO-Link
General data
10
Article No. scheme
Note:
The Article No. scheme shows an overview of product versions
for better understanding of the logic behind the article numbers.
For your orders, please use the article numbers quoted in the
selection and ordering data.
■
Benefits
Advantages through energy efficiency
Overview of the energy management process
We offer you a unique portfolio for industrial energy manage-
ment, using an energy management system that helps to
optimally define your energy needs. We split up our industrial
energy management into three phases – identify, evaluate,
and realize – and we support you with the appropriate hardware
and software solutions in every process phase.
The innovative SIRIUS industrial controls products can also
make a major contribution to the energy efficiency of a plant
(www.siemens.com/sirius/energysaving)
.
The 3RS14 and 3RS15 monitoring relays for IO-Link make the
following contribution to the energy efficiency of the plant as a
whole:
•
Demand-based control of heating and ventilation in the
process and in the control cabinet
■
Technical specifications
Connection for resistance sensors
Two-wire measurement
When two-wire temperature sensors are used, the resistances of
the sensor and wiring are added. The resulting systematic error
must be taken into account when the signal evaluation unit is
calibrated. A jumper must be clamped between terminals T2
and T3 for this purpose.
Wiring errors
The errors that are generated by the wiring comprise approxi-
mately 2.5 K
. If the resistance of the cable is not known and
cannot be measured, the wiring errors can also be estimated
using the following table.
Temperature drift dependent on the length and cross-section
of the cable with PT100 sensors and an ambient temperature of
20 °C, in K:
Example: On a PT100 sensor with a cable length of 10 m and a
conductor cross-section of 1 mm
2
the temperature drift equals
0.9 K.
Product versions
Article number
Temperature monitoring relays
3RS
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–
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0
Device type
e.g. 14 = digitally adjustable, 1 sensor
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Version and type of sensor
e.g. 40 = one threshold value,
PT100/PT1000, KTY83/KTY84, NTC
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Connection type
Screw terminals
1
Spring-type terminals (push-in)
2
Number and type of outputs
e.g. H = 1 CO
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Control supply voltage
e.g. B = 24 V DC
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Measuring range
e.g. 5 = -50 ... + 750 °C
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Example
3RS
1
4
4
0
–
1
H
B
5
0
IC01_00244
More information
Technical specifications,
see
Manual and internal circuit diagrams,
see
FAQs,
I
T3
T2
T1
PT100
NSB0_01323b
Cable length
in m
Cross-section
mm²
0.5
0.75
1
1.5
Temperature drift in K:
0
0
0
0
0
10
1.8
1.2
0.9
0.6
25
4.5
3.0
2.3
1.5
50
9.0
6.0
4.5
3.0
75
13.6
9.0
6.8
4.5
100
18.1
12.1
9.0
6.0
200
36.3
24.2
18.1
12.1
500
91.6
60.8
45.5
30.2
© Siemens AG 2016