Vega VEGADIS 82 Operating Instructions Manual

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Vega VEGADIS 82 Operating Instructions Manual Manual pdf 58 page image

5810 SupplementVEGADIS 82 • 4 … 20 mA/HART45300-EN-170724Ʋ Housing for panel mounting (mount-ed)IEC 60529 IP 40, NEMA Type 1Ʋ Aluminium/Stainless steel housing IEC 60529IP 66/IP 68 (0.2 bar), NEMA Type 6PConnection of the feeding power supplyunitNetworks of overvoltage category IIIAltitude above sea levelƲ by default up to 2000 m (6562 ft)Ʋ with connected overvoltage protection up to 5000 m (16404 ft)Pollution degree2) 4Protection class II10.2 HART communicationThe HART protocol operates with frequency shift keying (FSK) based on the data communicationstandard Bell 202. The digital signal is generated from the frequencies 1200 and 2200 Hz, whichrepresent the bit information 1 and 0. Sine curves with these frequencies are superimposed on thedirect current in the wire pair of the field instrument. The average value of the superimposed signalis zero. For that reason, the 4 … 20 mA signal is not influenced by the simultaneous digital datatransmission.Supported HART commandsCommand no. Command name Description0 Read Unique Identifier Sensor identification1 Read primary variable Primary Value with unit3 Read current 4 Variables PV, SV, QV, TV with unit13 Read Tag, descriptor, date Sensor TAG, …15 Read output information Scaling values18 Write Damping value Damping34 Write Tag, descriptor, date Sensor TAG, …35 Write range values Write scaling values36 Set upper range value Max. adjustment/SPAN37 Set lower range value Min. adjustment/ZERO44 Write PV units PV unit2) When used with fulfilled housing protection