Iyo VEC-VCF kudzingirira-kucheka yakakosha servo ine otomatiki kudzingirira-kucheka kudzora basa.Nekumhanyisa kwekudya kwezvinhu zvakagadziriswa, kumhanya kwemberi kwetafura yekuona kunodzorwa otomatiki.
Iyo VEC-VCR inotenderera banga yakakosha-chinangwa servo inobatanidza yechishanu simba remagetsi cam algorithm, iyo inogona kuona tenzi-muranda anotevera basa.
VEC-VCJ tension control servo yakavaka-mune akawanda tension control modes: inosanganisira yakavharika loop yekumhanyisa modhi, yakavharika loop torque modhi, yakavhurika loop yekumhanyisa modhi, uye yakavhurika loop torque modhi.