Gree Vireo B 9 MBH - Protection and Fault Handling; Protection Functions

32
7HFKQLFDO,QIRUPDWLRQ
Service Manual
1. Starting estimation:
$IWHU
WKHFRPSUHVVRUVWRSSHGZRUNLQJ IRU V LI7
inner pipe
!>7
IUR]HQSUHYHQWLQJIUHTXHQF\OLPLWHGWHPSHUDWXUH
WKHWHPSHUDWXUHRI K\VWHUHVLV LV ) @
WKHPDFKLQHLVRQO\DOORZHGWRVWDUWIRURSHUDWLQJRWKHUZLVHLWVKRXOGQRWEHVWDUWHGDQGVKRXOGEHVWRSSHGWRWUHDWDFFRUGLQJWRWKHIUR]HQ
SUHYHQWLQJSURWHFWLRQ&OHDUWKHWURXEOHXQGHUWKHPRGHRISRZHUWXUQRIIKHDWLQJDQGWKHSURWHFWLRQWLPHVDUHQRWFRXQWHG
2. Frequency limited
>7
IUR]HQSUHYHQWLQJQRUPDOVSHHGIUHTXHQF\UHGXFLQJWHPSHUDWXUH
@>7
LQQHUSLSH7 IUR]HQSUHYHQWLQJ IUHTXHQF\OLPLWHG WHPSHUDWXUH
@\RXVKRXOGOLPLW WKH IUHTXHQF\ UDLVLQJ RI
compressor.
3. Reducing frequency at normal speed:
,I
>7
IUR]HQSUHYHQWLQJ KLJK VSHHG IUHTXHQF\UHGXFLQJ WHPSHUDWXUH
@ >7
LQQHU SLSH 7 IUR]HQSUHYHQWLQJ QRUPDO VSHHG IUHTXHQF\UHGXFLQJ WHPSHUDWXUH
@ \RX VKRXOGDGMXVW WKH FRPSUHVVRU
IUHTXHQF\E\UHGXFLQJ+]VWLOOWKHORZHUOLPLW
4. Reducing frequency at high speed:
,I
>7
IUR]HQSUHYHQWLQJSRZHUWXUQRII WHPSHUDWXUH
@7
inner pipe
>7
IUR]HQSUHYHQWLQJKLJKVSHHGIUHTXHQF\UHGXFLQJ WHPSHUDWXUH
@\RX VKRXOGDGMXVWWKHFRPSUHVVRU IUHTXHQF\E\
UHGXFLQJ+]VWLOOWKHORZHUOLPLW
5. Power turn-off:
,I
WKH7
inner pipe
>7
IUR]HQSUHYHQWLQJSRZHU WXUQRIIWHPSHUDWXUH
@WKHQIUR]HQSUHYHQWLQJSURWHFWWRVWRSWKHPDFKLQH,I7>
IUR]HQSUHYHQWLQJIUHTXHQF\OLPLWHG WHPSHUDWXUH
]
<T
inner pipe
DQGWKHFRPSUHVVRUKDVVWRSSHGZRUNLQJIRUPLQXWHVWKHZKROHPDFKLQHVKRXOGEHDOORZHGWRRSHUDWH
,IWKHIUR]HQSUHYHQWLQJSURWHFWLRQSRZHUWXUQRIIFRQWLQXRXVO\RFFXUVIRUVL[WLPHVLWVKRXOGQRWEHUHVXPHGDXWRPDWLFDOO\DQG\RXVKRXOG
SUHVVWKH212)) EXWWRQ WRUHVXPHLIWKHIDXOW NHHSV RQ 'XULQJWKHSURFHVVRIUXQQLQJ LI WKHUXQQLQJWLPHRIFRPSUHVVRUH[FHHGV WKH W
HYDSRUDWRUIUR]HQSUHYHQWLQJSURWHFWLRQWLPHV]HURFOHDULQJWLPHWKHWLPHVRIIUR]HQSUHYHQWLQJSRZHUWXUQRIIVKRXOGEHFOHDUHGWRUHFRXQW
7KHPRGHRIVWRSSLQJWKHPDFKLQHRUWUDQVIHUULQJWRVXSSO\DLUZLOOFOHDUWKHWURXEOHWLPHVLPPHGLDWHO\LIWKHWURXEOHFDQQRWEHUHVXPHG
mode transferring will not clear it).
(5) Overload protection function
2YHUORDGSURWHFWLRQIXQFWLRQDWWKHPRGHRI&RROLQJDQGGHKXPLGLI\LQJ
1. Starting estimation:
$IWHUWKHFRPSUHVVRUVWRSSHGZRUNLQJIRUVLI7
RXWHUSLSH
>7
&RROLQJRYHUORDGIUHTXHQF\OLPLWHGWHPSHUDWXUH
@WKHWHPSHUDWXUHRIK\VWHUHVLVLV)WKH
PDFKLQHLVDOORZHGWRVWDUWRWKHUZLVHLWVKRXOGQRWEHVWDUWHGDQGVKRXOGEHVWRSSHGWRWUHDWDFFRUGLQJWRWKHRYHUORDGSURWHFWLRQ&OHDUWKH
WURXEOHDWWKHPRGHRISRZHUWXUQRIIKHDWLQJDQGWKHSURWHFWLRQWLPHVDUHQRWFRXQWHG
2. Frequency limited
,I >7
&RROLQJ RYHUORDG IUHTXHQF\OLPLWHG WHPSHUDWXUH
@ >7
RXWHU SLSH 7 &RROLQJ RYHUORDG IUHTXHQF\ UHGXFLQJ WHPSHUDWXUH DW QRUPDO VSHHG
@ \RXVKRXOG OLPLW WKH IUHTXHQF\ UDLVLQJ RI
compressor.
3. Reducing frequency at normal speed and power turn-off:
,I
>7
&RROLQJRYHUORDGIUHTXHQF\UHGXFLQJWHPSHUDWXUHDWKLJKVSHHG
@7
RXWHUSLSH
>7
&RROLQJRYHUORDGSRZHUWXUQRIIWHPSHUDWXUH
@\RXVKRXOGDGMXVWWKHFRPSUHVVRUIUHTXHQF\
E\UHGXFLQJ+]VWLOOWKHORZHUOLPLW$IWHULWZDVUXQQLQJVDWWKHORZHUOLPLWLI>7
&RROLQJRYHUORDGIUHTXHQF\UHGXFLQJWHPSHUDWXUHDWQRUPDOVSHHG
@7
RXWHUSLSH
,
WKHQ&RROLQJRYHUORDGSURWHFWVPDFKLQHVWRSSLQJ
4. Reducing frequency at high speed and stop machine:
,I
>7
&RROLQJRYHUORDGIUHTXHQF\UHGXFLQJWHPSHUDWXUHDWKLJKVSHHG
@7
RXWHUSLSH
>7
&RROLQJRYHUORDGSRZHUWXUQRIIWHPSHUDWXUH
@\RXVKRXOGDGMXVWWKHFRPSUHVVRUIUHTXHQF\E\
UHGXFLQJ+]VWLOOWKHORZHUOLPLW$IWHULWZDVUXQQLQJVDWWKHORZHUOLPLWLI>7
&RROLQJRYHUORDGIUHTXHQF\UHGXFLQJWHPSHUDWXUHDWQRUPDOVSHHG
@>7
RXWHUSLSH@
,
WKHQ&RROLQJRYHUORDGSURWHFWVPDFKLQHVWRSSLQJ
5. Power turn-off:
,I
WKH>7
&RROLQJRYHUORDGSRZHUWXUQRIIWHPSHUDWXUH
@7
RXWHUSLSH
WKHQ&RROLQJRYHUORDGSURWHFWVPDFKLQHVWRSSLQJ,I >7
RXWHUSLSH
@>7
&RROLQJRYHUORDGIUHTXHQF\OLPLWHG
WHPSHUDWXUH
@DQGWKHFRPSUHVVRUKDVEHHQVWRSSHGZRUNLQJIRUPLQXWHVWKHPDFKLQHVKRXOGEHDOORZHGWRRSHUDWH
,IWKH&RROLQJRYHUORDGSURWHFWLRQSRZHUWXUQRIIFRQWLQXRXVO\RFFXUVIRUVL[WLPHVLWVKRXOGQRWEHUHVXPHGDXWRPDWLFDOO\DQG\RXVKRXOG
SUHVVWKH212)) EXWWRQ WRUHVXPHLIWKHIDXOW NHHSV RQ 'XULQJWKHSURFHVVRIUXQQLQJ LI WKHUXQQLQJWLPHRIFRPSUHVVRUH[FHHGV WKH W
RYHUORDG SURWHFWLRQ WLPHV ]HUR FOHDULQJ WLPH  WKH WLPHV RI RYHUORDG SURWHFWLRQ SRZHU WXUQRII VKRXOG EH FOHDUHG WR UHFRXQW 7KHPRGH RI
VWRSSLQJWKH PDFKLQH RU WUDQVIHUULQJWRVXSSO\ DLU ZLOO FOHDUWKHWURXEOH WLPHV LPPHGLDWHO\ LIWKHWURXEOHFDQ QRW EH UHVXPHGWUDQVIHUULQJ
mode will not clear it).
Overload protection function at the mode of heating
Starting estimation :
$IWHUWKHFRPSUHVVRU VWRSSHG ZRUNLQJ IRUVLI7LQQHUSLSH7 KHDWLQJ RYHUORDG IUHTXHQF\OLPLWHGWHPSHUDWXUHWKHWHPSHUDWXUHRI
K\VWHUHVLVLV )WKHPDFKLQH LVDOORZHGWRVWDUW RWKHUZLVHLWVKRXOGQRW EHVWDUWHGDQGVKRXOG EHVWRSSHGWRWUHDW DFFRUGLQJWRWKH
RYHUORDGSURWHFWLRQ
&OHDUWKHWURXEOHDWWKHPRGHRISRZHUWXUQRIIKHDWLQJDQGWKHSURWHFWLRQWLPHVDUHQRWFRXQWHG