Measuring only 22.5 millimeters wide, the
Sirius 3RS26 digital devices are parameterized via an intuitive LCD display and
can be connected to a sensor that evaluates whether the temperature is above or
below a certain value or within a specific operating range (window function). A
SIL1-certified infrared communications interface makes it possible to
wirelessly add two resistance sensors and one analog input. As a result, they
can also monitor large, three-phase motors and transformers.
The integrated LCD display provides new
functionalities, such as an energy-saving mode (ecoMode) and improved
calibration capabilities. If values exceed or drop below limit temperatures,
the plant concerned is automatically shut down.
The second limit value may be used to issue a warning.
By changing color, the display indicates the equipment status (error, warning,
limit value exceeded). If a fault occurs, such as a cable break, the relay
switches to a safe state.
Variants are available for one sensor, two
threshold values, and all common resistance sensors and thermocouples. The
devices can be reset manually, by remote access, and automatically. A memory
function ensures that the last device state is stored and recovered in the
event of a blackout. The digital devices are also available with an IO link, so
that temperature data can be forwarded to higher-level controllers and
integrated in open cloud-based IoT systems, such as MindSphere.
They are certified according to functional
safety standards (IEC 61508/62061 and ISO 13849) and can therefore be used in
safety applications up to SIL 1 / PL c. They are also approved as temperature
monitors and limiters according to EN 14597 and can be used in industrial
furnaces. Burners can also be monitored, thanks to EN 50156 certification.