Trng i hc Bch Khoa H Ni

Vin in

MC LC

2LI NI U

3CHNG 1: KHI QUT V TI V YU CU

5CHNG 2: THIT K CHNG TRNH IU KHIN

52.1.Xy dng chng trnh iu khin

92.2.Hm iu khin

102.3.S r le tip im

12CHNG 3: LA CHN THIT B

123.1.Chn PLC

133.2.Thit k s u dy

143.3.Mch lc

153.4.La chn thit b

153.4.1.La chn xylanh

163.4.2. La chn cng tc hnh trnh

163.4.3. La chn van phn phi

173.4.4. La chn r le trung gian

183.4.5. La chn nt n

183.4.6. La chn cu ch

19CHNG 4: LP TRNH PLC V THIT K GIAO DIN IU KHIN

234.2.Giao din nt bm v cm bin

244.3.Giao din gim st s hot ng ca h thng

LI NI UHin nay trong cng nghip hin i ha t nc, yu cu ng dng t ng ha ngy cng cao v trong i sng sinh hot, sn xut (yu cu iu khin t ng, linh hot, tin li, gn nh). Mt khc, nh cng ngh thng tin, cng ngh in t pht trin nhanh chng lm xut hin mt loi thit b iu khin kh trnh PLC.

thc hin cng vic mt cch khoa hc nhm t c s lng sn phm ln, nhanh m li tin li v kinh t. Cc cng ty, x nghip sn xut thng s dng cng ngh lp trnh PLC s dng cc loi phn mm t ng. Dy chuyn sn xut t ng PLC lm gim sc lao ng ca cng nhn m sn xut li t hiu qu cao p ng kp thi cho i sng x hi. Qua n ny, em s tm hiu v lp trnh PLC v ng dng n vo iu khin h thng ng hp bng hai bng ti ca cc cng ty, x nghip sn xut.Di y l chng trnh iu khin vit cho h thng ng hp t ng. Trong qu trnh thc hin n cn gp nhiu kh khn tuy vy n cng chnh l bi kim tra kho st kin thc tng hp ca mi sinh vin, v cng l iu kin cho sinh vin ngnh t ng ha t tm hiu v nghin cu kin thc v PLC. Mc d vy, vi sinh vin ang ngi trong gh nh trng th kinh nghim thc t cn cha c nhiu, do cn phi c s hng dn gip ca thy gio. Qua y cho em c gi li cm n ti thy gio TS.Dng Minh c tn tnh ch dn, gip em hon thnh tt n mn hc ny. n ny hon thnh khng nhng gip em c c thm nhiu kin thc hn v mn hc m cn gip em dc tip xc vi mt phng php lm vic mi ch ng hn,linh hot hn v c bit l s quan trng ca phng php lm vic theo nhm.Qu trnh thc hin n l mt thi gian thc s b ch cho bn thn em v nhiu mt.

H ni, ngy 9 thng 6 nm 2015

Sinh vin

Ng c Vnh CHNG 1: KHI QUT V TI V YU CU ti: Cho cng ngh vn chuyn sn phm nh sau:

Yu cu: Trng thi ban u cc xylanh thu v, van chn khng ngt, bng ti dng, h thng cho php vn chuyn v sp xp li chiu ca cc hp sn phm t bng ti 1 sang bng ti 2. Ln lt cc hp sn phm c a vo thng trn bng ti 2. Sau nhn nt Start th h thng bt u hot ng. Bng ti 1 hot ng. Khi cm bin 1B1 nhn bit c 4 hp sn phm i qua th xylanh 1A1 i ra chn cc hp pha sau li. Sau khi 1A1 ra c 2s th xy lanh 4A1 i xung, khi ti cui hnh trnh th van chn khng 2A1 m. Khi r le p sut KA tc ng (nhn bit c chn khng) th xylanh 4A1 thu v. Khi 4A1 thu v ti cui hnh trnh th xylanh 3A1 xoay phi ri xylanh trt 5A1 di chuyn sang phi, ti cui hnh trnh th xylanh 4A1 dui ra sau van chn khng ngt. 0,5s sau xylanh 4A1 thu v. Ti cui hnh trnh th 5A1 thu v v bng ti 2 hot ng cho ti khi cm bin 2B1 nhn bit thng vo v tr th dng. Xy lanh 1A1 thu v tip tc cho cc hp tip theo i vo v tr, chu trnh c nh vy lp li. H thng s dng li khi n Stop.

CHNG 2: THIT K CHNG TRNH IU KHIN

2.1. Xy dng chng trnh iu khin

Xy dng chng trnh Grafcet 1 cho cng ngh trn

Hnh 2.1: Chng trnh Grafcet 1

Bng phn cng u vo

STTTn giK hiuLoi PLCM t

1Nt nhn bt u hot ngPB1DIX0Khi n nt th h thng bt u hot ng

2Cm bin 1B1CB1DI(NO)X1Cm bin nhn bit 4 sn phm

3Cm bin v tr u 4A1, u 5A1CB2DI(NO)X2Cm bin v tr u xy lanh 4A1, u xy lanh 5A1

4R le p sut KACB3DI(NO)X3Cm bin chn khng

5Cm bin v tr

cui 4A1, u 5A1CB4DI(NO)X4Cm bin v tr cui xy lanh 4A1, u xy lanh 5A1

6Cm bin v tr

u 4A1, cui 5A1CB5DI(NO)X5Cm bin v tr u xy lanh 4A1, cui xy lanh 5A1

7Cm bin 2B1CB6DI(NO)X6Cm bin cho bit thng hng vo ng v tr

8Cm bin v tr

cui 4A1, cui 5A1CB7DI(NO)X7Cm bin v tr cui xy lanh 4A1, cui xy lanh 5A1

9StopPB2DIX10Khi n nt th h thng dng li

Tng s u vo: 9 u vo DI

Bng phn cng u ra

STTTn giK hiuLoiPLC

1Bng ti 1BT1DO

Y0Vn chuyn sn phm t u n cui bng ti.

ng c KB 3 pha, ng ct dng contactor 220V~, qua r le trung gian

2Xylanh 1A1 i raXL1DOY1Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

3Xylanh 4A1 i xungXL2DOY2Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

4Van 2A1 m1DOY3n bo 220Vac

5Xylanh 4A1 i lnXL2DOY4Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

6Xylanh 3A1 xoay phiXL3DOY5Van o chiu 5/2 tc ng bng nam chm in qua van ph tr

7Xylanh 5A1 i sang phiXL4DOY6Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

8Van 2A1 ngt2DOY7n bo 220Vac

9Xylanh 5A1 sang triXL4DOY10Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

10Bng ti 2BT2DOY11Vn chuyn sn phm t u n cui bng ti.

ng c KB 3 pha, ng ct dng CTT 220V~, qua r le trung gian

11Xylanh 1A1 i voXL1DO Y12Van o chiu 5/2 tc ng bng nam chm in qua van ph tr c 2 pha

Tng s u ra: 11 u ra DO

Chng trnh grafcet 2:

Hnh 2.2: Chng trnh Grafcet 22.2. Hm iu khinT chng trnh grafcet trn, vit c hm iu khin cho cng ngh:Y0 = (g + X10.Y12 + Y0)

Y1 = (X1.Y0 + X1.Y12 +Y1)

Y2 = (T0.Y1 + X5.Y5.Y6+Y2)

Y3 = (X4.Y2 +Y3)

Y4 = (X3.Y3 + T1.Y7 + Y4) Y5 = (X2.Y4 + Y5)

Y6 = (X2.Y4 + Y6)

Y7 = (X7.Y2 + Y7)

Y10 = (X5.Y4 +Y10)

Y11 = (X5.Y4 +Y11)

Y12 = (X6.Y10.Y11 + Y12)

2.3. S r le tip imT hm iu khin trnh by nh trn, v c s rle tip im nh sau:

Hnh 2.4: S r le tip im

Hot ng ca s r le tip im: n g (Start), Y0 hot ng v t duy tr

Khi X1 tc ng, Y1 hot ng v duy tr ng thi ngt Y0 Khi timer T0 tc ng, Y2 hot ng v ngt Y1

Khi tip im X4 ng, Y3 hot ng v t duy tr cho n khi chuyn trng thi X3 tc ng, Y4 hot ng v Y3 ngng hot ng Cho n khi X2 ng, Y5 v Y6 hot ng v t duy tr ng thi Y4 ngng

Nu tip im X5 ng, Y2 hot ng v ngt Y5, Y6

Tip n X7 tc ng, Y7 hot ng v ngt Y2

Sau , timer T1 tc ng, Y4 hot ng v ngt Y7

Nu tip im X5 ng, Y10 v Y11 c in v hot ng ng thi ngt in Y4

Tip , tip im X6 tc ng, Y12 c cp in v hot ng, ngt in Y10 v Y11

Ti y, nu X1 tc ng th Y1 s hot ng. Nu X10 tc ng th Y0 s hot ng v ngt Y12

CHNG 3: LA CHN THIT B

3.1. Chn PLC

Theo yu cu ca bi ton, s u vo cn thit l 9 v s u ra cn thit l 11 nn ta chn PLC: FX3U-32MR/ES-A B CPU vi 32 I/O:16 u vo v 16 u ra(r le) Ngun cung cp: 100 - 240 VAC Cng sut tiu th: 35 W B nh chng trnh: 64.000 Steps ng h thi gian thc. B m: 235 Timer: 512 C th m rng n 384 ng vo/ra Truyn thng RS232C, RS 485.3.2. Thit k s u dy

Hnh 3.1: s u dy3.3. Mch lcTrong h thng, c 2 bng ti iu khin bi 2 ng c

C iu khin bng ti 1 (BT1) C iu khin bng ti 2 (BT2)

Rle iu khin xylanh 1A1 Rle iu khin xylanh 3A1

Rle iu khin xylanh 4A1 Rle iu khin xylanh 5A13.4. La chn thit b3.4.1. La chn xylanhLa chn 2 xylanh kh nn inox MA cho cc v tr xi lanh 1A1 ,4A1

u im ca xylanh kh nn dng ny l d s dng, thng lp cc v tr cht hp, khng c din tch v cu to n gin, cht liu nh, hay dng trong mi trng sch nh sn xut thc phm, sn xut ru bia, sn xut thuc l, dc phm.+ La chn xylanh xoay SMC CRB2BWU10 cho v tr xi lanh 3A1

+ La chn xylanh trt FESTO model cho v tr xylanh 5A1

3.4.2. La chn cng tc hnh trnhLa chn Cng Tc hnh trnh Omron Z-15GW22-B

3.4.3. La chn van phn phiVan MAC c 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 oC

Thi gian p ng : 3-8 ms.

3.4.4. La chn r le trung gian

Vi van phn phi nh trn, ta chn role trung gian c thng s nh sau:

S cp tip im : 2.

Ngun cp : 24VDC.

Dng nh mc : 3A.

Cng sut ct dng : 36 W.

Kch thc : 36x28x21.5 mm.

R le loi MY ca hng Omron.3.4.5. La chn nt n

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 : 5A

3.4.6. La chn cu chChn loi cu ch ngc thng s 24VDC - 2A.

CHNG 4: LP TRNH PLC V THIT K GIAO DIN IU KHIN

4.1. Chng trnh iu khin SFC

S dng phn mm GX-develop ta c chng trnh iu khin c vit bng ngn ng SFC:

Hnh 4.1: Chng trnh SFC

Trng thi ban u

S0:

Tr0:

S10:

Tr1:

S11:

Tr2:

Tr3:

S12:

S13:

Tr4:

Tr5:

S14:

Tr6:

Tr7:

S15:

S16:

Tr8:

Tr9:

S17:

Tr10:

Tr11:

4.2. Giao din nt bm v cm bin

Giao din iu khin gm 2 nt bm Start v Stop

C 7 cm bin: cm bin 1B1, cm bin v tr u 4A1 u 5A1, cm bin r le p sut KA, cm bin v tr cui 4A1 u 5A1, cm bin v tr u 4A1 cui 5A1, cm bin 2B1, cm bin cui 4A1 cui 5A1

Hnh 4.2: Giao din nt bm v cm bin4.3. Giao din gim st s hot ng ca h thng

Hnh 4.3: Giao din gim st Khi n nt Start X0, h thng bt u hot ng, bng ti 1 chy, n Y0 sng.

Khi cm bin 1B1 X1 tc ng nhn bit 4 sn phm, xy lanh 1A1 i ra chn sn phm li, n Y1 sng

Sau khi xy lanh 1A1 i ra 2 giy th xy lanh 4A1 i xung, n Y2 sng

Khi xy lanh 4A1 i ht hnh trnh gp cm bin v tr X4 th van chn khng 2A1 m, n Y3 sng Sau khi van 2A1 m, cm bin p sut KA X3 tc ng, xy lanh 4A1 i ln, n Y4 sng

Xy lanh 4A1 i ht hnh trnh ln chm cm bin v tr X2 th xy lanh 3A1 xoay phi, n Y5 sng v xy lanh 5A1 trt sang tri, n Y6 sng

Xy lanh 5A1 sang phai n ht hnh trnh chm cm bin X5 th xy lanh 4A1 i xung, n Y2 sng

Xy lanh 4A1 i xung n khi chm cm bin v tr X7 th van chn khng 2A1 ng, n Y7 sng

Sau khi van 2A1 ng 0,5 giy, xy lanh 4A1 i ln, n Y4 sng

Xy lanh 4A1 i ln cho n ht hnh trnh chm cm bin X5, xy lanh 5A1 i sang tri, n Y10 sng, ng thi bng ti 2 bt u chy, n y11 sng

Bng ti 2 hot ng cho ti khi cm bin 2B1 X6 tc ng nhn bit thng i vo v tr th bng ti 2 dng, xy lanh 1A1 thu vo, n Y12 sng Nu n nt Stop X10 th h thng dng li, nu khng n h thng bt u chu trnh mi.

KT LUNQua thi gian nghin cu v thc hin n ny, em nhn thy mnh thu c mt lng kin thc rt c ch v PLC v ng dng ca PLC trong cng nghip

Nhm em thu c nhng kt qu nh sau:

tm hiu v nm vng khi nim, ng dng v PLC c bit l PLC mitsubishi FX3U

Hiu c cch s dng phn mm GX Dveloper, GT Designer, GT Simulator v ngn ng lp trnh SFC Thit k h thng gim st iu khin, m phng thnh cng.PAGE 26Gio vin hng dn: TS.Dng Minh c

Sinh vin: Ng c Vnh

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