Wakavhiringika nezve sosi uye sink mhando muPLCs? Heino tsananguro yakapfava:
Wakavhiringika nezve sosi uye sink mhando muPLCs? Heino tsananguro yakapfava:
Source vs Sink: Kune transistor maseketi, sosi (PNP) zvinoreva iyo IO wedunhu inopa ikozvino, nepo sink (NPN) zvinoreva kuti inotora ikozvino.
ITA (Digital Output):
PNP (mabviro) zvabuda zvakajairika muSiemens 300/400 akatevedzana uye European PLCs. Ivo vane mukati mesimba sosi, saka ikozvino inoyerera ichibuda kuburikidza neDO, ichibvumira yakananga relay kutyaira pasina kunze simba.
NPN (kunyura) zvakabuda zvakajairwa muJapan, Taiwanese, Siemens 200 akatevedzana, uye mazhinji epamba PLC. Vanoda wiring yekunze kune 24V magetsi sosi, ine ikozvino inoyerera kubva kunze kwemidziyo ichipinda mune inobuda module.
DI (Digital Input):
Musiyano unoenderana neazvino kuyerera mafambiro inoenderana neiyo DI terminal.
Kazhinji, kana DI's COM yakabatana ne24V uye yekuisa inoshanda pa0V, ikozvino inoyerera kunze (mabviro). Kana COM yakabatana ne0V uye inopinza inoshanda pa24V, ikozvino inoyerera mu (kunyura).
Special Note paJapan PLCs: Vamwe (seMitsubishi) vanotsanangura DI zvichibva pamhando dzinogamuchirwa dzekubuda. A DI inogona kugamuchira sosi DO inonzi "source input"; imwe inogona kugamuchira singi DO ndeye "kunyura kupinza".
DIDO Pairing: Source DI inogona kubatana kunyura DO, uye zvinopesana. Same-mhando DI / DO yekubatanidza ingangoda kudhonza-up resistors kana mamwe matanho ekudzivirira reverse polarity.
Siemens PLCs:
Sink Logic: Signal ON kana ikozvino inoyerera ichibva pane yekuisa terminal.
Kwakabva Logic: Signal ON kana ikozvino inoyerera ichipinda mune yekuisa terminal.
Nesimba rakanaka remagetsi, yakaderera voltage (0V) pane yekuisa terminal panguva ye "ON" chiratidzo chinoratidza sink logic; a high voltage (kazhinji 24V) inoratidza kunobva pfungwa.
Mabviro ekuisa ari epamusoro-mwero anoshanda (ikozvino anoyerera mukati), nepo sink yekupinda iri yakaderera-level inoshanda (ikozvino inoyerera ichibuda).
Mitsubishi FX3U:
Kwakabva: Yazvino inoyerera kunze, ine PNP transistor yekubuda maitiro.
Sink: Yazvino inoyerera mukati, ine NPN transistor yekubuda maitiro.
Zvaunoda Kudunhu:
S7-200 PLCs inogona kubata ese sink uye sosi mhando, nepo S7-300 PLCs anowanzo sosi. Western Europe inowanzo shandisa sosi mhando nePNP switch dzepamusoro-level mapipu. Japan neSouth Korea vanosarudza masingi, vachishandisa NPN switch kune yakaderera-level yekupinza.
Source zvinobuda zviri positive DC pole, sink zvinobuda hazvina kunaka. Siemens PLCs kazhinji ane ese ari maviri, asi sosi yakajairika. Mitsubishi PLCs inotsigira zvese zvinopinda, asi kunyura kwakawanda, kunoenderana neNPN-mhando yepedyo switch.