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Ambient sensor 'Breeze' Reference manual

Ambient sensor 'Breeze' B Reference manual

Ambient sensor 'Breeze' Reference manual Preface Disclaimer White Bream products are not authorized for use in, or in connection with surgical implants, or as critical components in any medical or nuclear, or aircraft, or other transportation devices or systems where failure to perform can reasonably be expected to cause significant injury to the user, without the express written approval of an executive officer of White Bream. Such use is at buyer's sole risk, and buyer is responsible for verification and validation of the suitability of products incorporated in any such devices or systems....

Ambient sensor 'Breeze' Reference manual This 'Breeze' ambient monitoring sensor node enables measurement of temperature, humidity and so-called 'VOC' or volatile organic compounds. Breeze features CANopen®-compatible fieldbus connectivity. That allows for connecting of many (up to 127) sensors with large separation distances using robust and reliable CAN-bus technology (spanning up to 5km at low bit rate). CANopen1 Ambient sensor Measure temperature, humidity and VOC values CANopen® fieldbus, measuring devices profile CiA 404 Possibility for branding or custom firmware with specific behavior...

Ambient sensor 'Breeze' Reference manual Draft 3.1.1 Entity parameters (lec The following parameters are appl equipment. Note that the allowed maximum input voltage! insically sati n-ATE Input current (li) and input power (Pi) are . internally limited by the equipment. Hence thesecan be'igiored during the assessment of intrinsic loop parameters. White Bream © 2018 page 6 / 23 P943RP00I

Ambient sensor 'Breeze' Reference manual Temperature range Temperature accuracy, typical Temperature repeatability Temperature resolution Long term temperature drift Self heating Humidity accuracy, typical Humidity repeatability Humidity resolution Humidity hysteresis Humidity range Long term humidity drift Temperature & humidity sample rate Volatile organic compounds (VOC) range VOC long term drift Further details regarding the sensor parameters can be found in the original datasheets for these sensors: • • Sensirion SHTC1 'Humidity and Temperature Sensor IC' Sensirion SGPC3 'Sensirion Gas Platform'...

Ambient sensor 'Breeze' Reference manual Draft Ambient sensor 'Breeze' Reference manual Draft -30 -10 10 30 50 70 Temperature typical and maximal tolerance in °C. White Bream © 2018 page 8 / 23 P943RP001

Ambient sensor 'Breeze' Reference manual Draft Ambient sensor 'Breeze' Reference manual Draft ors of the individual wires insic :ions above! ie cable assembly may be different from the l) White Bream © 2018 page 9 / 23 P943RP00I

Ambient sensor 'Breeze' Reference manual Draft 3.3.2 M8 or MI2 CANopen® pluggable connection (optional) White Bream © 2018 page 10 / 23 P943RP00I

Ambient sensor 'Breeze' Reference manual Ideally, the device is mounter upright with the cable entrance facing the floor. The temperature sensor is located in the lower-left corner of the circuit. Operating the device in the upright position minimizes measurement errors caused by heat generated by the rest of the electronics in the device. Do not mount the device in locations that might be subject to condensation or actual water deposits! Cable length and sizes The maximum bit rate of the CAN-bus is determined by the length of the trunk and by the length of the stubs towards to individual CAN...

Ambient sensor 'Breeze' • • Reference manual 4.1.1 CAN-bus Termination Short trunk lengths up to 40m can be terminated with a resistor of ~124Ω at each end of the trunk. For longer lengths (and therefore lower bit rates), a higher valued termination resistance is more suitable, probably in the range of 150Ω to 300Ω. 4.1.2 IecEx/ATEX FISCO Cable requirements With intrinsic safe installation conforming to annex I of IEC 60079-25:2010, the following cable limitations must be observed: • • • • • • Loop resistance RC 15Ω/km to 150Ω/km Loop inductance LC 400μH/km to 1mH/km Capacitance CC 45nF/km to...

Ambient sensor 'Breeze' Reference manual CANopen interface CAN is a very reliable and robust fieldbus technology. The protocol is based on messages with up to 8 bytes of data and an 11-bit identifier. Access to the bus is prioritized by identifier by a CAN controller. A big limitation of classic CAN is the message size that is limited to 8 bytes. That is very limiting for various network activities such as file transfers and firmware updates. This is where CANopen comes into play. CANopen is a protocol on top of CAN. CANopen provides a standardized method of defining settings and variables in...

Ambient sensor 'Breeze' Reference manual Draft Ambient sensor 'Breeze' Reference manual Draft CANopen device, bit timing parameters of the physical layer (b compliant to the identity object (I0l8h). 5.1.4 CiA 302-3 - configuration and program do This specification defines objects and file formats for the program download and control. 5.1.5 CiA 302-9 - power management & mo This specification defines additional CANopen services an related to dedicated application requirements. Th function documents specifies the energy saving me parameters for energy saving. n between 10kbps and ;tice and gives...

Ambient sensor 'Breeze' Index Reference manual Subidx Description Analog input, VOC, 2 bytes Unused entries Device input voltage Analog input physical unit Analog input decimal digits Analog input operating mode Analog input sample rate (in μsec) Analog sensor readings (16-bit signed integer)

Ambient sensor 'Breeze' Reference manual Draft 5.3 Default operation Out of the box, the device is configured to switch to OPERA! ONAL state autonomously. The node-ID is programmed to 1 and one TPDO. . is configured for timer-based event trigger. Our out-of-the-box self-assigning node-IC feature allows to devices to learn the next free node-IC which it can use (this requires he devices to be connected one at a time to a powered network). Self-assigning node ID, starting at 1 Automatic switch to NMT state OPERATIONAL TPCOI (CAN-ID 0xl80+$NOCEIC) every second 5.3.1 TPDOI Illustrated below is an...