SIEMENS
10/154
Siemens IC 10 · 2017
Relays
SIRIUS 3RS14, 3RS15 temperature monitoring relays for IO-Link
Relays, digitally adjustable for up to 3 sensors
10
■
Overview
SIRIUS 3RS1441 digital temperature monitoring relay for up to 3 sensors
The 3RS14 temperature monitoring relays can be used to
measure temperatures in solid, liquid and gas media. The tem-
perature is calculated using a sensor in the medium, evaluated
by the device and monitored for overshooting or undershooting
a working range (window function).
The devices can be parameterized to indicate the measured
temperature in °C or °F. The 3RS1441 evaluation unit can
evaluate up to 3 resistance sensors at the same time.
■
Benefits
•
Very simple operation without complicated menu selections
•
Space-saving with 45 mm width
•
Two- or three-point control can be parameterized quickly
•
All versions with removable terminals
•
All versions with screw or spring-type terminals
■
Application
The 3RS1441 temperature monitoring relays can be used almost
anywhere where several temperatures must be monitored at one
time for overshooting, undershooting or staying within a certain
range.
Monitoring of set temperature limits and output of alarm
messages for:
•
Plant and environment protection
•
Temperature limits for process variables e.g. in the packaging
industry or electroplating
•
Controlling equipment and machines such as heating, climate
and ventilation systems, solar collectors, heat pumps or warm
water supplies
•
Motor, bearing and gear oil monitoring
•
Monitoring of coolants
■
Technical specifications
✓
Available
1)
Not for NTC type B57227-K333-A1 (100 °C: 1.8 k
; 25 °C: 32.762 k
).
2)
Two-wire connection of resistance sensors with wire jumper between
T2 and T3.
Type
3RS1441
Auxiliary circuit
Rated operational currents
I
e
• AC-15/24 ... 250 V
A
3
• DC-13 at
- 24 V
A
1
- 125 V
A
0.2
- 250 V
A
0.1
DIAZED fuse protection
• Operational class gG
A
4
Evaluation unit
Measuring accuracy at 20 °C ambient temperature
(T20)
<
2 K,
1 digit
Deviations due to ambient temperature
In % of the measuring range
%
0.05 per K deviation from T20
Measuring cycle
ms
500
Hysteresis settings
for temperature 1
K
1 ... 99, for both values
Adjustable
delay time
s
0 ... 999.9
Sensor circuit
Typical sensor current
• PT100
mA
Typically 1
• PT1000/KTY83/KTY84/NTC
mA
Typically 0.2
Open-circuit detection
✓
1)
Short-circuit detection
✓
Three-wire conductor connection
✓
2)
Enclosure
Rated insulation voltage
U
i
Pollution degree 2
V AC
300
© Siemens AG 2016