Siemens siprotec 7sj602 - 4.8 Start-up time monitoring for motors

0HWKRG RI RSHUDWLRQ6-
9
&       *      &   
 6WDUWXS WLPH PRQLWRULQJ IRU PRWRUV
7KH VWDUWXS WLPH PRQLWRU SUHYHQWV WKH PRWRU IURP
GDPDJH FDXVHG E\ H[FHVVLYHO\ ORQJ VWDUWXS RFFXU
UHQFHV 7KHVH PD\ KDSSHQ ZKHQ IRU H[DPSOH WKH
URWRU LV ORFNHG WKH GULYLQJ WRUTXH LV WR KLJK RU LPSHU
PLVVLEOH YROWDJH EUHDN GRZQ RFFXUV
7KH WULSSLQJ WLPH GHSHQGV RQ WKH PDJQLWXGH RI WKH
VWDUWXS FXUUHQW 7KH IROORZLQJ IRUPXOD LV YDOLG
W


,
VWUW
,
UPV

W
6W8S
IRU ,
UPV
! ,
VWUW
!
ZLWK W  WULSSLQJ WLPH
,
UPV
 DFWXDO FXUUHQW UPV
,
VWUW
 SDUDPHWHUL]HG VWDUWXS FXUUHQW
W
6W8S
 SDUDPHWHUL]HG VWDUWXS WLPH
)LJXUH  VKRZV WKH ORJLF GLDJUDP RI WKH VWDUWXS
WLPH PRQLWRULQJ
7KH VWDUWXS WLPH PRQLWRU FDQ EORFN WKH WLPH RYHU
FXUUHQW VWDJHV ,! ,S DIWHU DSSUR[LPDWHO\  PV
VHOHFWDEOH
,
/
,
/
,
/
,
/ UPV
,
/ UPV
,
/ UPV
!657 EN
%ORFN VWDUWXS
WLPH PRQLWRULQJ
,
VWUW
!
,
VWUW
!
,
VWUW
!



|
|
657 7US
W
6W8S
W
6W8S
W
6W8S
,! EON
QR
\HV
DSSUR[
 PV
%ORFN ,!,
S
VWDJHV
)LJXUH  6LPSOLILHG ORJLF GLDJUDP RI VWDUWXS WLPH PRQLWRULQJ