Resistors na birkian shigar da su cikin tsarin sarrafa motar don hana lalacewar kayan aiki da/ko gazawar ɓarna a cikin VFD. Suna da mahimmanci saboda a wasu ayyuka motar da VFD ke sarrafawa tana aiki azaman janareta kuma wutar lantarki tana gudana zuwa VFD maimakon motar. Motar za ta yi aiki azaman janareta a duk lokacin da aka sami jujjuyawar lodi (misali, lokacin da nauyi ya yi ƙoƙarin kiyaye tsayin daka yayin da yake haɓaka lif akan saukowa) ko lokacin da aka yi amfani da motar don rage motsin motar. Wannan zai sa wutar lantarkin bas ɗin DC na tuƙi ya tashi, wanda zai haifar da gazawar tuƙi idan makamashin da aka samar bai bace ba.
(Aluminum Braking Reisistor)
Akwai hanyoyi da yawa na asali don sarrafa kuzarin da injin ke samarwa. Na farko, injin da kansa zai sami capacitors waɗanda ke ɗaukar wasu makamashi na ɗan gajeren lokaci. Yawancin lokaci wannan lamarin yana faruwa lokacin da babu kayan aiki mai ƙarfi kuma ba a buƙatar saurin raguwa ba. Idan makamashin da aka samar a wani yanki na zagayowar aiki ya yi girma da yawa don tuƙi kaɗai, ana iya shigar da resistor birki. Thebirki resistorzai watsar da wuce haddi makamashi ta hanyar mayar da shi zuwa zafi a kan resistive kashi.
(Resistor Braking)
A ƙarshe, idan makamashi mai sabuntawa daga motar yana ci gaba ko yana da babban aikin sake zagayowar, yana iya zama mafi fa'ida don amfani da naúrar sabuntawa maimakonbirki resistor. Wannan har yanzu yana kare VFD daga lalacewar kayan masarufi da munanan ayyuka, amma yana bawa mai amfani damar kamawa da sake amfani da makamashin lantarki maimakon watsar da shi azaman zafi.
