Nội dung

ao nam mdi 2010 NGU6N TI^T K|£M NANG LUONG M ^ tat cac thiet bi dien ciing v ^ chilcfng trinh Profienersrv T Ngffdi cuoi cung rdi khdi nha may lieu ed tat cac thiet bi khdng? Cac thiet bi nay tieu ton rat nhieu dien nang khi d trang thai chay khdng tai ma khdng dffdc sff dung. Thomas Schott, Phd chu tich hang Siemens AG, chuyen ve tff ddng hda xi nghiep, ndi vie each thffc edng ty dng ung hp Mercedes - Benz vdi sang kien tiet kiem nang Iffdng dien. Ong Schott giai thich rang nha san xuat d td Mercedes - Benz dffa ra muc tieu giam 20% nang Iffdng tieu thu cho moi xe trong thdi gian hdn 5 nam tff 2007 den 2010. De dat dffdc muc tieu nay, hp da cd cac tinh toan khi san xuat than xe - cac tinh toan nay chi ra rang ed rat nhieu nang Iffdng tieu thu - ngay ca khi ngffng san xuat va may mdc chay khdng tai. Khdng lam gi nhu'ng vSn CO the tieu ton nhieu tien cua cong ty Giai doan khdng san xuat cung cd the ngan hdn rat nhieu, chang han nhff thdi gian khi cac edng nhan san xuat d td nghi an sang hoac thdi gian can de udng mot chai bia trong gid nghi an trffa. Cac nghien cu\i chi ra rang bp phan san xuat lien tuc thffdng tieu ton khoang 60% nang Iffdng vao cuoi tuan. Od la 60% nang Iffdng thffdng sff dung trong sudt qua trinh san xuat thffc te. "Day chinh la dieu can thay ddi" 44 TV OpNG HOA NGAY NAY • (86 1 +2/2010) Ong Schott ndi," Ngay nay, d dau dd ngffdi ta da sff dung cac phffdng phap giam nang Iffdng tieu thu cho san xuat nhffng chffa cd ai thffc sff quan tam tdi van de giam nang Iffdng tieu dung trong thdi gian tam ngffng san xuat". Ap dung chiTtfng trinh Profienergy Rd rang nganh edng nghiep d td da cam nhan dffdc sff can thiet phai cai tien. AIDA, To chffc Sang kien tff ddng hda cua cac nha san xuat d td Dffe , yeu cau PNO - To chffc nhuYig ngffdi sff dung Profibus (giao thffc mang may tinh edng nghiep phd bien nhat) dffa ra mot chffdng trinh phi ldi nhuan dffdc gpi la Profienergy vao cuoi nam 2008. Muc dich cua chffdng trinh nay la cung cap mot phffdng phap ddn gian de quan ly tap trung viec eat giam cac tai dien vd ich trong qua trinh tam ngffng san xuat. Viec nay dula vao tieu chuan ciia mang Ethernet trong edng nghiep va ed sff dung Profinet. Cong viec nay bat dau vdi viec trien khai dff an vao dau n§m 2009 va cd sff tham gia ciia 30 cong ty trong nganh edng nghiep tff dong hda bao gom ca Siemens. Cac v3n ban hien dang dffdc PNO xem x6t I9I va se dffdc phe duyet vao dau 2010. Cac san pham Profienergy dSu tien cua Siemens cung nhff cua c k edng ty khac, dffdc hy vpng se xult hien vao n^m 2010. Thomas Schott Pho Chii tich Siemens AG Tai sao khong chi t^t thiet bi di la dUgtc? Tai sao lai can ed chffdng trinh tff ddng hda va chffdng trinh giao tiep phffc tap de tat mot loai may mdc khi khdng sff dung den? Theo dng Schott, cac giai phap ap dung trffde day cd lien quan den viec tat thiet bi bang phffdng phap thu edng trong thdi gian nghi deu rat ton thdi gian va khdng dam bao. Profienergy cho phep cac tai dien khdng dffdc sff dung se tff ddng ngat vao gid nghi hoac tff ddng giam nang Iffdng tieu thu. Ong giai thich rang nang Iffdng tieu thu se dffdc cat giam bang each Iffa chpn cat cac chffc nang va/hoae cac may mdc ddn le, khdng chi trong gid nghi chinh ma niumption m«MSuramant • »r body ih«ll fnifli' I 1 cdn trong gid nghi ngan nhff nghi an sang. Profienergy se sff dung mot sd lieu tieu chuan dffdc thiet lap de cho phep lap trinh ddn gian cho cac thao tac chuyen ddi phffc tap. Tieu chuan mdi nay cd the ap dung cho cac nganh edng nghiep che tao va cac nganh edng nghiep nao can cac khoang thdi gian nghi giai lao dac thu. SU tham gia ciia Siemens Ong Schott md ta each Siemens tiep can vdi viec cai tien hieu suat nang Iffdng lien tuc. Cach tiep can nay giong nhff mot quy trinh bao gom 3 giai doan: nhan biet, danh gia va thffc hien Ong cho biet " 6 qua trinh Nhan biet, Chung tdi chi ra rd rang mot thiet bi may mdc va mot nha may tieu thu bao nhieu nang Iffdng. 6 day chiing tdi ap dung he thdng kiem soat nang Iffdng Simantic Powerrate. Khi thffc hien dffdc bffdc dau tien nay, chung ta ed nhan thffc tich effe hdn ve nhu cau nang Iffdng". Bffde thff hai, Danh gia, chiing tdi phan tich kha nang cua qua trinh cai tien. Cuoi cung, trong bffde thff ba, bffdc Thffc hien, cac phffdng phap nhan dang va danh gia dffdc tien hanh nham dat dffdc muc tieu cua mot nha may cd hieu suat nang Iffdng cao hdn. "Day la giai doan ma Siemens dffa ra nhieu giai phap ve hieu suat nang Iffdng cho qua trinh san xuat va cung dffa ra he thdng quan ly tai dien vdi Simatie Powerrate" dng Schott cho biet. He thdng Simatie Powerrate se tam thdi cat bd cac tai dien trong he thdng phu trd neu nhff dff doan thay mot tinh DSy la moi lo ngai ciia cac nha san xuat 6 to hudng qua tai. • khi ho phai chi tra nhieu cho phan nSng Vdi quan diem nay dng cd dffa ra mot ludng tieu hao ngay ca trong thdi gian nghi quang cao cho cac san pham tiet kiem giai tao. nang Iffdng eiia Siemens: "Siemens cung cap cac san pham va cac giai phap ho trd tat ca cac giai doan trong viec kiem soat nang Iffdng cua khach hang, tff giai doan hinh anh hda vdi Sentron PAC va phan mem kiem soat nang Iffpng thdng qua cac giai doan danh gia Ong Schott dffa sff dung Simatie Powerrate va EOA - gdi dich vu giiip ich cho viec sff dung nang Iffdng trong nha may, cho den giai doan tinh toan gia thanh vdi cac giai phap nhff Sinasave va cuoi cung la giai doan thffc hien tren cac san pham mdtd, bp ddi dien va cac thiet bi khdi ddng mem". Vi du cu the md ta tdm tSt ve dff an ma edng ty dng dang tien hanh cung vdi Mercedes Benz. Muc tieu d day la nhan biet dffdc bao nhieu nang Iffdng dffdc tieu thu trong mot bd phan cua nha may san xuat ma ed cac thiet bi bao gom bd dao dien cua Siemens G120D. He thdng Simatie Powerrate da dffdc ap dung ciing vdi cac ky thuat do dac. Nang Iffdng ma nha may yeu cau dffdc phan tich va the hien trong cac dieu kien khac nhau eiia nha may nhff "He thdng md" hoac "He thdng d trang thai dffng yen". Nghien cffu nay da lam ndi bat cac tiem nang cai tien ed the dat dffdc bang each eat cac tai dien khdng sff dung den, vi du cac tai dien d mffc 400V va 24V. Ket qua la chiing tdi phat hien ra rang chi can khdi ddng day chuyen san xuat 10 phut trffde khi bat dau ca lam viec. Chi phi nang Iffdng cung giam di bang viec sff dung he thdng truyen ddng FU G120D giup phuc hdi n5ng Iffpng trong khi ham tdc do lam viec. THU HOAI (Theo www.automation.com) (S6l+2/2010)'4TVOdNGHpANGAYNAY 4S