Kutumiza nthawindi chipangizo chowongolera chomwe chimagwiritsa ntchito mfundo yamagetsi kapena mfundo yamakina kuti chikwaniritse kulamulira kuchedwa kwa nthawi. Chili ndi mitundu yambiri, monga mtundu wa mpweya wonyowa, mtundu wamagetsi ndi mtundu wamagetsi. Ma relay a nthawi amatha kugawidwa m'mitundu iwiri: mtundu wa nthawi yonyowa ndi mtundu wa nthawi yonyowa. Ma relay a nthawi yonyowa ndi mpweya ali ndi kuchedwa kwakukulu (0.4 ~ 60s ndi 0.4 ~ 180s), ndi osavuta kapangidwe kake, koma osalondola kwenikweni.
Pamene chogwirira champhamvu chikugwiritsidwa ntchito, armature ndi ma pallet amakokedwa ndi pakati ndipo amatsika pansi nthawi yomweyo, zomwe zimapangitsa kuti nthawi yomweyo zigwirizane kapena kuzimitsa. Koma ndodo ya pistoni ndi lever sizingatsatire armature pamodzi ndi dontho, chifukwa kumapeto kwa ndodo ya pistoni kumalumikizidwa ndi nembanemba ya rabara mu chipinda cha mpweya, pamene ndodo ya pistoni ikutuluka pansi, nembanemba ya rabara imatsika pansi, chipinda cha mpweya pamwamba pa mpweya chimakhala chopyapyala ndipo ndodo ya pistoni imanyowa ndikugwa pang'onopang'ono. Pambuyo pa nthawi inayake, ndodo ya pistoni imatsika pamalo enaake, idzakankhira zochita zolumikizana mochedwa kudzera mu lever, kotero kuti kulumikizana kwamphamvu kumachoka, kulumikizana kwamphamvu kumatsekedwa. Kuchokera pa coil yolimbikitsidwa mpaka kukhudzana kochedwa nthawi kuti amalize kuchitapo kanthu, nthawi ino ndi nthawi yochedwa yolumikizira. Kutalika kwa nthawi yochedwa kungasinthidwe mwa kusintha kukula kwa dzenje lolowera la chipinda cha mpweya ndi sikuru. Pambuyo poti chogwirira chachikopa chachotsedwa mphamvu, relay imachira ndi ntchito ya kasupe wobwezeretsa. Mpweya umatulutsidwa mwachangu kudzera mu dzenje lotulukira mpweya.