Symaro™ Immersion Temperature Sensor Modbus RTU QAE2154.
Use The sensor is used in ventilation and air conditioning plants for: ● Controlling or limiting the flow temperature ● Limiting the return temperature ● Controlling the domestic hot water (DHW) temperature Function The immersion temperature sensor acquires the temperature of the medium via its sensing element whose resistance value changes as a function of the temperature. This change is converted to a Modbus RS-485 output signal. The output signal corresponds to the selected temperature range.
Cable routing and cable selection Note that when routing cables, the longer the cables run side by side and the smaller the distance between them, the greater the electrical interference. Shielded cables must be used in environments with EMC problems. Twisted pair cables are required for the secondary supply lines and the signal lines.
Disposal The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations.
Technical data Function Communication Modbus RTU (RS-485) Supported baud rate 9600; 19200; 38400; 57600; 76800; 115200 Transmission format 1-8-E-1; 1-8-O-1; 1-8-N-1; 1-8-N-2 Bus termination 120 ohm, jumper selection For detailed information about specific functions, see Basic documentation (A6V11610643 *). Power supply Operating voltage Safety extra-low voltage (SELV) AC 24 V ±20 % or DC13.
Standards, directives and approvals Product standard EN 60730-1, EN 60730-2-9, EN 61000-6-2, EN 61000-6-3 Automatic electrical controls for household and similar use Electromagnetic compatibility (Applications) For use in residential, commerce, light-industrial and industrial environments EU conformity (CE) A5W00028382A *) RCM conformity A5W00028384A *) UL UL 873, http://ul.
Diagrams Connection terminals Siemens Smart Infrastructure G Operating voltage AC 24 V ±20 % or DC 13.5...
Dimensions Dimensions in mm Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.com/buildingtechnologies 8 Siemens Smart Infrastructure Document ID A6V11610252_en--a Edition 2019-07-12 © Siemens Switzerland Ltd, 2019 Technical specifications and availability subject to change without notice.
