Lumel P43 User Manual

Also see for P43: User manual

Contents

306. Archive – Power ProfileThe P43 transducer is equipped with an archive allowing to store up to1000 measurements of averaged active power. The averaged activepower PAV can be archived with time intervals 15, 30, 60 minutes syn-chronized with the real time clock (0, 15, 30, 45 minutes – an examplefor 15 minutes is shown on the fig.11).In case of work in the mode: 15 minutes’ walking window, the archiving isthe same as for the 15 minutes’ time interval (fig. 12). The archive is ava-ilable in the form of 1001 registers in the range of addresses 8000-9000.The number of archived values is in the register 8000, however values(samples) are archived in registers with addresses 8001-9000. Values1e20 are in registers, in which samples are not written yet.The archive is organized in the shape of a circular buffer. After writingthe thousandth value, the next value overwrites the oldest value with thenumber 1, and successively the next with the number 2, etc.As long as the number of samples does not exceed 1000, the valuein the register 8000 indicates the number of archived samples. Afterexceeding 1000 samples, the number of archived values changes inthe range from 1000 to 2000. E.g. the value 1006 in the register 8000means, that there was more than a thousand of samples and the oldestsamples are from the register 8007 to 9000, next from 8001 to the youn-gest sample located in the register 8006.The change of the current or voltage transformer ratio, real time or thekind of mean power causes the archive erasing.7. Error CodesAfter connecting the transducer to the network, messages about errors canappear. Causes of errors are presented below:- the state diode pulsates in red – lack of calibration or the non-volatile memo-ry is damaged. One must return the transducer to the manufacturer,- the state diode lights in red – inappropriate work parameters; one mustconfigure the transducer again.- the state diode pulsate alternately in red and green - error of phase connection sequ-ence; one must interchange the connection of phase L2 with the phase L3.