MC LC

Chng 1: Thit k s nguyn l31.1. Tm tt quy trnh lm vic ca h thng.31.2. Lu chn ch lm vic.41.3. Lu ch lm vic bnh thng:51.4. Chuyn lu sang dng Grafcet:7Chng 2: Chn mch lc, mch iu khin92.1. Mch iu khin cho PLC.92.2. Phng n iu khin cho PLC.102.2.1. Mch iu khin cho PLC.102.2.2. Mch lc cho PLC.112.3. Phng n ghp ni cho PLC.122.3.1. La chn PLC.122.3.2. Van phn phi.132.3.3. La chn cng tc hnh trnh.132.3.4. La chn Nt nhn.142.3.5. La chn ci bo hiu.152.3.6. La chn cu ch bo v u ra.152.3.7. La chn Rle trung gian.162.3.8. La chn Xylanh kh nn.172.3.9. La chn Sensor.17Chng 3: Thit k s u dy193.1. Mch iu khin.193.2. Mch lc.213.3. Thit k t in.22Chng 4: M phng s dng phn mm Automation Studio24Tham kho28

Chng 1: Thit k s nguyn l

1.1. Tm tt quy trnh lm vic ca h thng. H thng cho php ct phi thp theo 3 mc chiu di khc nhau c la chn bi 3 nt n chn ch . Ch A (mode A) s cho php ct thp chiu di ti a (c dnh v bi xylanh 6A1), mode B cho php ct chiu di trung bnh (c nh v bi xylanh 5A1), mode C cho php ct chiu di ngn nht (c nh v bi xylanh 4A1). Sau khi chn ch ct (thng qua 3 nt n Mode A, Mode B, Mode C), n nt Start th h thng bt u hot ng: Xylanh chn i ra (4A1, 5A1 hoc 6A1 ty theo ch chn), sau bng ti hot ng a phi vo v tr (pht hin bi cm bin b tr 1B1, 2B1 hoc 3B1) th ng c bng ti ngng, ng thi xylanh kp 2A1 i ra kp phi. Sau ng c ct quay v xylanh 1A1 t t h li ct xung tin hnh ct. Khi ht hnh trnh th 1A1 thu v sau ng c ct ngng, xylanh kp v xylanh nh v cng thu v. Sn phm c mt c cu khc ly ra. Sau khi sn phm c ly ra th s c tnh hiu in p 24VDC (t tip im K ca 1 relay). Sau khi c tn hiu sn phm c a ra th h thng tip tc lp li chu trnh cho ti khi n nt Stop. chn ch hot ng th phi dng my sau chn li ch .T quy trnh trn ta thy h thng c 2 ch lm vic ring bit: ch la chn ch lm vic, v ch lm vic bnh thng. Ta c lu cng ngh cho qu trnh ct phi t ng trn:1.2. Lu chn ch lm vic.Bt u

SaiSaiSaingngngKt thcMode C = 1Mode B = 1Mode A = 1n nt Mode C?n nt Mode B?n nt Mode A?Mode A = 0Mode B = 0Mode C = 0

1.3. Lu ch lm vic bnh thng:321

10Sn phm c ly ra./c ct dng.2A1 v xylanh chn thu v.91A1 i ln./c ct hot ng.1A1 h xung/c bng chuyn dng.2A1 i ra.876544A1 i ra5A1 i ra6A1 i raBt u

ngngng

ngngng

ng

ng

ng

ng

Ch thch:1: Mode A = 1? (ch A c chn)2: Mode B = 1?3: Mode C = 1?4: 3B1 = 1? (phi vo v tr)4: 2A1 = 1?6: 1A1 = 1?7: 2A1 i ra?8: 1A1 h xung?9: 1A1 i ln?10: C tnh hiu in p 24VDC? (sn phm c ly ra)Lu trong tt c cc khi kim tra iu kin, nu iu kin sai, chu trnh s dng li ch ti cho n khi iu kin ng th mi thc hin tip.

1.4. Chuyn lu sang dng Grafcet:a) Grafcet cho la chn ch lm vic:

b) Grafcet cho ch lm vic chnh:Chng 2: Chn mch lc, mch iu khin

2.1. Mch iu khin cho PLC.Bng 2.1. Bng phn cng vo ra cho PLC.STTu vou ra

1X0: STARTY1: Xylanh 1A1 tin

2X1: STOPY2: Xylanh 1A1 li

3X2: Cng tc hnh trnh a0Y3: Xylanh 2A1 tin

4X3: Cng tc hnh trnh a1Y4: Xylanh 2A1 li

5X4: Cng tc hnh trnh b0Y5: Xylanh 4A1 tin

6X5: Cng tc hnh trnh b1Y6: Xylanh 4A1 li

7X6: Cng tc hnh trnh i0Y7: Xylanh 5A1 tin

8X7: Cng tc hnh trnh i1Y8: Xylanh 5A1 li

9X8: Cng tc hnh trnh j0Y9: Xylanh 6A1 tin

10X9: Cng tc hnh trnh j1Y10: Xylanh 6A1 li

11X10: Cng tc hnh trnh k0

12X11: Cng tc hnh trnh k1

13X12 : Cm bin 1B1

14X13 : Cm bin 2B1

15X14 : Cm bin 3B1

2.2. Phng n iu khin cho PLC.2.2.1. Mch iu khin cho PLC.Thit k mch iu khin cho PLC s dng R le ng ngt :

Hnh 2.8. Mch iu khin cho PLC FX2N 32MR2.2.2. Mch lc cho PLC.Sau y l 5 xylanh c iu khin bng r le:

Hnh 2.9. Xylanh s dng Van thy kh 4/2

2.3. Phng n ghp ni cho PLC.2.3.1. La chn PLC.PLC Mitsubishi FX2N-32MR-DSS lng: 1 thit b.V tr: PLC kt ni gia cc thit b u vo v cc R le u ra.Chc nng: iu khin cc c cu vn chuyn linh kin v bng ti gp nh linh kin theo yu cu ca cng ngh.Thng s k thut:-S ng vo s: 13-S ng ra s: 11-Ngun cung cp: 24 VDC.-Cng sut tiu th: 25 W.-B nh chng trnh: 8.000-16.000 Steps.-ng h thi gian thc.-B m: 235-Timer: 256-Truyn thng RS232C, RS 485.-Kch c W x H x D: 150 x 90 x 87. Hnh 2.12. PLC Mitsubishi FX 2N-32MR-ES/UL2.3.2. Van phn phi.S lng: 3 thit bV tr: t cui xylanhChc nng: Ht, nh vt khi c iu khin bng R le.Thng s k thut:-Kch thc: 10-32 UNF.-Trng thi van: NC.-Trng thi cun ht: thng ng.-Ngun: 24 VDC.-Cng sut:1.8 W.-Chiu di dy ni: 18 inch.-p sut ti a: 120 PSI( 8.2bar).-Nhit hot ng: -18 n 50 0C.-Thi gian p ng: 3-8 ms.Hnh 2.13. Van phn phi

2.3.3. La chn cng tc hnh trnh.S lng: 4 thit b.V tr: im u v im cui ca hnh trnh ca cc xylanh.Chc nng: Pht hin c sn phm cung cp cho c cu. Xc nh v tr ca xylanh.Thng s k thut: chn loi c k hiu SS-10L.-2 cng tc hnh trnh thng m.-2 cng tc hnh trnh thng ng.-Dng ti a : 2A-S ln ng ct : 30x106 ln.Hnh 2.14.Cng tc hnh trnh.

2.3.4. La chn Nt nhn.S lng: 1 thit b.V tr: t ti bng iu khin.Chc nng: Thc hin cc hot ng iu khin qu trnh, khi ng, reset, dng c cu.c im: -S dng loi nt nhn c n bo m bo cho cc thao tc iu khin ng.-Dng ti a: 5AHnh 2.15. Nt nhn

2.3.5. La chn ci bo hiu.S lng: 1 thit bV tr: t ti bng iu khin c cu.Chc nng: Bo hiu cho ngi vn hnh bit qu trnh vn hnh ca c cu, cnh bo cc iu kin khng c p ng. Hnh 2.16. n bo hiu

2.3.6. La chn cu ch bo v u ra.S lng: 3 thit bChc nng: bo v u ra.Thng s k thut: S dng loi cu ch ng, dng ti a ph thuc vo dng u ra chu c. y ta chn loi cu ch 24VDC - 2A h p. Hnh 2.17. Cu ch bo v

2.3.7. La chn Rle trung gian.S lng: 8 thit b.V tr: Ni vi cc ng ra ca PLC.Nhim v: ng ct in tng ng cho cc cng on, theo yu cu cng ngh ca bi ton.Vi yu cu nh trn, ta chn role trung gian c thng s nh sau:-Ngun cp : 24VDC.-Dng nh mc : 3A.-Cng sut ct dng : 36 W.-Kch thc : 36x28x21.5 mm.Hnh 2.18. R le loi MY ca hng Omron.2.3.8. La chn Xylanh kh nn.S lng: 2 thit b.V tr: chnh l xylanh 1 v xylanh 2.Nhim v: Xylanh 1 v xylanh 2 chu trch nhim chuyn ng thng ht vt t bng ti 1 v bng ti 2 vo bng ti 3.Thng s k thut: -iu khin bng kh nn.- di hnh trnh : 30, 20, 20 cm.-Nhit lm vic : 20-80 oC.-p sut : 0.6-10bar.-Tc :30-800mm/s.-ng knh piston :32mm.

Hnh 2.19. Xylanh kh nn2.3.9. La chn Sensor.S lng: 2 thit b.V tr: t trn bng ti 1 v bng ti 2.Nhim v: pht hin sn phm.Thng s k thut:-Loi Thu pht ring KC 15m.-Ngun cp: 12~24VDC 10%.-Ng ra: NPN, 26.4VDC max., 100mA max.-Chn ng ra Light-ON / Dark-ON.-Ngun sng: Infrared LED (860nm).-Thi gian p ng: 1ms max.-Bin tr iu chnh nhy.-n nh vi nh sng mi trng.-Nhit mi trng: -20 ~ 55oC.-Kch thc : 40x12x21 (mm). Hnh 2.20. Sensor E3Z-T61

Chng 3: Thit k s u dy

Ta s i dy v thit k t in bng Autocad Electrical:Phin bn s dng: Autocad Electrical 2015.Ni dung thit k gm 3 phn:- Mch iu khin-Mch lc-Thit k t in3.1. Mch iu khin.PLC s dng Mitsubishi FX 2N-32MR-ES/UL.Chn ladder: Schematic > Insert Wires/Wire Number > Insert Ladder:

Chn PLC: Schematic > Insert PLC:PLC Mitsubishi FX 2N-32MR-ES/UL

Chn cc linh kin khc: Schematic > Insert Components > Icon Menu 3.2. Mch lc.Chn linh kin kh nn: Schematic > Insert Hydraulic Components

3.3. Thit k t in.Chn cc linh kin vo t in: Panel > Insert Component Footprints > Schematic List

S dng tin ch tab Home thit k khung t in.Phn t in thit k cn cha hon thin mong c thy gio gp .

Chng 4: M phng s dng phn mm Automation Studio

Quy c:Xi lanh 4A1 i ra: A1+Xi lanh 4A1 i vo: A1-Xi lanh 5A1 i ra: A2+Xi lanh 5A1 i vo: A2-Xi lanh 6A1 i ra: A3+Xi lanh 6A1 i vo: A3-Xi lanh 2A1 i ra: B+Xi lanh 2A1 i vo: B-Xi lanh 1A1 i ra: C+Xi lanh 1A1 i vo: C-

Chn ch A: (ch ngn)n start bng chuyn chy chn ch bng cng tc hnh trnh g1. Xylanh 4A1 i ra gp cm bin 1B1, xi lanh 2A1 i xung chn phi.

2A1 i xung ht th 1A1 i xung cng vi ng c ct:

Ct xong 1A1 i ln. 1A1 ln ht n 2A1 i ln:

2A1 ln ht th 4A1 thu v

Qu trnh hon ton tng t cho 2 ch B v C.

Tham kho1. https://www.en.wikipedia.org2. https://plcvietnam.com.vn/3. www.mitsubishielectric.com.au4. http://mycadsite.com/tutorials/index.htm5. Sch C s h thng iu khin qu trnh TB ln th 2, NXB Bch khoa H Ni, 2000 - Hong Minh Sn.6. v cc ngun ti liu khc trn internet.

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