Omron CPM1 - Design Precautions



 'HVLJQ 3UHFDXWLRQV
2EVHUYH WKH IROORZLQJ SUHFDXWLRQV ZKHQ GHVLJQLQJ D V\VWHP LQFRUSRUDWLQJ D
&30 3&
 3RZHU 6XSSO\ :LULQJ
6HSDUDWH WKH SRZHU VXSSO\ ZLULQJ IURP WKH FRQWURO V\VWHP &30 V\VWHP DQG
'& ,2 V\VWHP ZLULQJ
 ,QWHUORFN DQG /LPLW &LUFXLWV
&RQVWUXFW DQ H[WHUQDO LQWHUORFN FLUFXLW LI &30 RXWSXWV DUH XVHG WR SHUIRUP UHFLS
URFDO RSHUDWLRQV VXFK DV FRQWUROOLQJ WKH IRUZDUG DQG UHYHUVH RSHUDWLRQ RI D
PRWRU RU LI LQFRUUHFW 3& RSHUDWLRQ FRXOG FDXVH DFFLGHQWV RU PHFKDQLFDO GDPDJH
$OVR FRQVWUXFW DQ H[WHUQDO OLPLW FLUFXLW WR SUHYHQW UXQDZD\ PRYHPHQW LQ V\V
WHPV VXFK DV SRVLWLRQ FRQWURO
7KH IROORZLQJ GLDJUDP VKRZV DQ H[DPSOH RI DQ LQWHUORFN FLUFXLW
,QWHUORFN &LUFXLW
0RWRU IRUZDUG
0RWRU UHYHUVH
0&

0&
0&

0&
&30
,Q WKH LQWHUORFN FLUFXLW DERYH 0& DQG 0& FDQ·W EH 21 DW WKH VDPH WLPH HYHQ LI
&30 RXWSXWV  DQG  DUH ERWK 21 DQ LQFRUUHFW 3& RSHUDWLRQ
 3RZHU 6XSSO\ 9ROWDJH
&DXWLRQ 8VH WKH SRZHU VXSSO\ YROWDJHV LQGLFDWHG LQ 6HFWLRQ  8QLW 6SHFLILFDWLRQV DQG
&RPSRQHQWV )DLOXUH WR DGKHUH WR WKH VSHFLILFDWLRQV PD\ UHVXOW LQ ILUH ,Q SODFHV
ZKHUH SRZHU VXSSO\ FRQGLWLRQV DUH SRRU WDNH VWHSV WR HQVXUH WKDW SRZHU LV VXS
SOLHG DW WKH UDWHG YROWDJH %H VXUH WR DGKHUH WR VDIHW\ SUHFDXWLRQV VXFK DV SUR
YLGLQJ EUHDNHUV WR SUHYHQW VKRUW FLUFXLWV LQ H[WHUQDO ZLULQJ :KHQ FRQGXFWLQJ DQ\
RI WKH IROORZLQJ RSHUDWLRQV WXUQ 2)) WKH SRZHU WR WKH 3& (OHFWURFXWLRQ SURGXFW
GDPDJH DQG PDOIXQFWLRQ PD\ UHVXOW
 &RQQHFWLQJ RU GLVFRQQHFWLQJ ([SDQVLRQ ,2 8QLWV DQG &38 8QLWV
 $VVHPEOLQJ 8QLWV
 &RQQHFWLQJ FDEOHV DQG ZLULQJ
 &30 3RZHU ,QWHUUXSWLRQV
6XSSO\ 9ROWDJH 'URS
:KHQ WKH VXSSO\ YROWDJH IDOOV EHORZ  RI WKH UDWHG YDOXH WKH 3& VWRSV DQG
WKH RXWSXW JRHV 2))
0RPHQWDU\ 3RZHU )DLOXUH 'HWHFWLRQ
$ PRPHQWDU\ SRZHU IDLOXUH ODVWLQJ OHVV WKDQ  PV ZLWK DQ $& SRZHU VXSSO\ DQG
 PV ZLWK D '& SRZHU VXSSO\ LV QRW GHWHFWHG DQG WKH &38 8QLW FRQWLQXHV WR RSHU
DWH
$ PRPHQWDU\ SRZHU IDLOXUH ODVWLQJ ORQJHU WKDQ  PV ZLWK DQ $& SRZHU VXSSO\
DQG  PV ZLWK D '& SRZHU VXSSO\ PD\ RU PD\ QRW EH GHWHFWHG LQ DQ XQFHUWDLQ
DUHD
:KHQ D PRPHQWDU\ SRZHU IDLOXUH LV GHWHFWHG WKH &38 8QLW VWRSV RSHUDWLQJ DQG
WKH RXWSXW JRHV 2))
'HVLJQ 3UHFDXWLRQV 6HFWLRQ 