Bao Cao Thuc Tap Co Khi Dong Anh

8/2/2019 Bao Cao Thuc Tap Co Khi Dong Anh

1/19

CHNG 1

V TR, VAI TR CA NH MY NHM NG ANH

1. GII THIU V NH MY

Tn nh my: Nh my Nhm ng Anh

a ch: Khi 2A, th trn ng Anh, H Ni.

Gim c nh my: K s ng Vn Chung

Nh my nhm ng Anh thuc Cng ty TNHHNN mt thnh vin C khng Anh, chu s lnh o trc tip ca Gim c cng ty TNHHNN mt

thnh vin c kh ng Anh, thuc tng cng ty xy dng v pht trin h tngLICOGI.

Din tch nh my: 28.000 m2.

2. TNH HNH SN XUT KINH DOANH

2.1. Lnh vc sn xut kinh doanh

Nh my chuyn sn xut nhm thanh nh hnh cung cp cho xy

dng dn dng v cng nghip m bo tiu chun cht lng quc t

T chc tiu th sn phm trn phm vi ton quc v xut khu.

Thit k, cung cp, thi cng cc gin khng gian cc cng trnh xydng.

2.2. Sn phm chnh ca nh my

Sn phm Anot trng Sn phm M mu khng ph bng

Sn phm M mu c ph bng E.D

Sn phm sn tnh in ngoi tht

Sn phm trang tr bng ph Film

2.3. Nng lc sn xut


2/19

Xng p n nhm: 5500 tn/nm

Xng sn tnh in: 1000 tn/nm

Sn phm ph Film: 320 tn/nm Xng Anot, m mu, E.D: 4500 tn/nm

Nh my c phng thit b kim tra cht lng sn phm ng b vhin i xut x t chu u

3. CC THNH TCH T C

Vi u th cht lng cc sn phm ca Nh my c tiu th ngy cng tng.

c bit nh p dng cng ngh tin tin , Nh my Nhm ng Anh nhanhchng chin u th v ch to v lp t gin khng gian ti th trng Vit

Nam vi hng trm cng trnh c thi cng nh :

cc sn vn ng trn ton quc

cc nh thi u phc v SEAGAME 22 ( NT Qun Nga )

mi n sn bay Tn Sn Nht

nh xe METRO CASH Cn Th

gin khng gian nh ga T1 ca sn bay quc t Ni Bi

gin khng gian ca Cung vn ha thiu nhi m Sen

c tnh khong 80% s gin khng gian trn c nc do Nh my Nhm ngAnh ch to v lp t gip gim chi ph cho cng trnh nhiu t ng.

Nm 2004 sn phm mi gin khng gian ca Nh my Nhm ng Anh nhn c gii Sao Vng t Vit.

H thng cht lng ca Nh my Nhm ng Anh t tiu chun qun l chtlng ISO 9001:2000.

Chnh sch cht lng ca Nh my Nhm ng Anh cng nh ca chnh schcht lng ca Cng ty C Kh ng Anh l:

CKA = Cht lng Kinh t ng hn An tm


3/19

CHNG 2

S T CHC X NGHIP

1. CHC NNG NHIM V CHNH CA CC B PHN

1.1. Gim c Nh my Nhm

ng: NG VN CHUNG

Thay mt Gim c Cng ty CKA gii quyt cng vic c y quyn.

Trc tip ch o cng vic: t chc cn b, cng tc ti chnh, cng tctiu th kinh doanh, k hoch sn xut.

Huy ng b my cng ty thc hin cc vn ny sinh khc

1.2. Ph gim c Nh my Nhm

1.2.1. Ph gim c k thut

Chu trch nhim v ton b hot ng ca cc b phn: phng Kthut, phng KCS-TN, phng C in, phng iu , xng n p,xng Anot, xng Sn Film, xng Gia Cng.

Qun l ngun nhn lc, thit b, hot ng, ph duyt thit k, quy

trnh cng ngh, xut chng trnh o to ngun cn b, xt duytsng kin ci tin k thut, iu sn xut trong phm vi ph trch.


4/19

1.2.2. Ph gim c kinh doanh

Chu trch nhim v ton b cc hot ng ca cc b phn: phngKinh doanh, phng Vt t, phng iu , phng D n.

Lp k hoch cung cp vt t, k hoch sn xut, tiu th sn phm,quyt ton chi ph vt t, nng lng, tr lng nh k

Tip th xc tin thng mi, x l khiu ni, iu sn xut trongphm vi ph trch.

1.3. K ton trng

Lp k hoch ti chnh phc v sn xut, pht trin ca nh my.

Lp bo co ti chnh, k ton v xc nh chi ph cht lng.

Qun l, kim sot cng vic phng k ton.

1.4. Cc phng ban nghip v

P.K ton P.D n X.n pP.Kinh doanh P.KCS-TN X.AnotP.Vt t P.K thut X.Sn Flim

P.iu P.C in X.Gia cng


5/19


6/19

CHNG 3

PHN XNG ANOT

1. MT BNG PHN XNG ANOT


7/19

2. S CNG NGH XNG ANOT

K1, K2: Kim trasn phm trc khivo cng nghAnode ha

K8: Kim tra snphm trc khi nhpkho

K3,4,5,6,7: Kim tra

sn phm v thngs cng ngh Anodeha

B 3: Khcmn P.A

B 4: Khcmn S.A

Nhm Profilen p

G liu

B 1: Tydu m

K3

B 2:Ra nc

B 5:Ra nc

B 6: nmn kim

B 7:Ra nc

B 8:Ra nc

B 9: Trungha A.R

B 10:

Ra nc

K1

K2

K4

B 24: Ranc D.I

B 23: Ra

nng D.I

B 22: Ranc D.I

B 19/21:Ra nc

B 18/20:M mu

B 17:Ra nc

B 16:Ra nc

B 12/13:Anode

B 11:

Ra nc

K6

K5

B 25: Phbng E.D

B 28:Bt kn

B 29:Ra nc

B 26: Thu

hi RO1

B 27: Thuhi RO2

Ch kh

Sy

D liu

Bao gi

Nhp kho

K8

K7

S CNG NGH DY CHUYN ANOT, M MU, PH E.D V BT KN

Phun

ct


8/19

3. THUYT MINH S CNG NGH XNG ANOT Nhm profile n p: y l sn phm t xng n p, cc thanh nhm

c nh hnh theo yu cu khch hng. B mt nhm lc ny l lp Al2O3t nhin rt mng, do phi thc hin anot ha, m mu, ph E.D bo

v. Phun ct:

G liu: cc thanh nhm c g ln cc thanh x trc khi a vo b.

B 1: Ty du m: Ngm cc thanh nhm vo b 1 trong 2 pht. B ny ccha cht AC 3-4%, c tc dng gn ging cht ty ra, to nhiu bt, s tydu m, bi bn bm trn b mt nhm sao cho khng cn nh mu do dum mang li.

B 2: Ra nc: Trng ht bt cn bm li t b 1, cn th lau vt bn ccb.

B 3: Khc mn P.A:

B 4: Khc mn S.A:

B 5: Ra nc. B 6: n mn kim: B ny ch yu cha NaOH (30-35g/l), nhit 30-38o.

B ny c tc dng ty sch lp mng Al2O3 t nhin l ra nn Al sng. Thigian ngm 1,5 pht. Yu cu b mt sn phm khng c vt en, b mt sng

u nhau. B 7,8: Ra nc: Trng cc ha cht t b 6 cn bm trn cc thanh nhm.

Thi gian khng qu 5 pht. B 9: Trung ha A.R: ch yu cha HNO3 (60-65g/l), c tc dng ha tan

cc kim loi Fe, Mn, Mg, Si... m b 6 khng ha tan c cho b mtsn phm sng hn ln. Thi gian ngm 1 pht.

B 10, 11: Ra nc. Thi gian khng qu 10 pht. Yu cu b mt snphm khng c vt en, vt rn.

B 12/13: Anot ha. Mc ch ca vic anot ha l to lp nhm oxit Al2O3nhn to dy khong 10-15m, nhm bo v b mt nhm. B anot ch yucha axit H2SO4 (170-180g/l) v cc ion Al3+( 4-17.5g/l). B dng chnh lu to in p mt chiu trn cc in. in p t, thi gian anot ha, dngin c ci t ty theo tng loi sn phm. Thng thng in p l17,6V, nhit 18-21oC, dng in 8-10kA. Kim tra dy ca lp Anotha.

B 16,17: Ra nc trc khi em i m mu... Khng qu 3 pht.


9/19

B 18/20: Nhm c m mu ghi hoc nu b 18, mu vng b 20.Nhit ca b c duy tr mc 19 n 210C. B 18 cha mui thic, axitsulphuric.

B 19/21: Nhm sau khi m mu c a qua b 19/21 cha nc sch

B 22: sau Nhm c ra trong b nc DINu sn phm u ra khng yu cu m mu th t b 17, nhm c a thngti b 22 ra DI.

T b 22, nu nhm yu cu ha m, n s c a thng ti b 28 btkn. B 28 cha NiF.

Sau b 28, nhm c a qua b 29 ra bng nc sch ri nhc ln choro nc.

Nu sn phm nhm c yu cu ha bng, t b 22, n c a qua b 23cha nc nng DI nhit t 73 n 760C loi b axit b mt.

Tip theo, nhm c a qua b 24 ra DI, ri ph bng ED 25. B mucha sn in di. Nhim v ca b ny l to mt lp Polime trn b mtnhm bo v nhm v lm bng.

Sau , nhm c ra trong cc b 26, 27. Sn in di c thu hi haib ny a ngc tr li b 25. Sau b 27 nhm c kh t nhin.

Cui cng nhm c sy kh, d ra, a vo bao gi v nhp kho.


10/19

CHNG 5

MY TI SINH AXIT

1. VAI TR CA MY TI SINH AXIT

Trong dy chuyn cng ngh m anot xng anot, mt yu cu cng nghquan trng i vi b 12/13 ( b anot ) l phi lun m bo nng axit H2SO4nm trong khong 170-180g/l, v nng ion Al3+ t 4-17.5g/l. Sau y l cc

phn ng ha hc xy ra trong b anot:

Ti in cc m catot ( hp kim nhm )

Ti in cc dng anot ( in cc ng ni vi cc profile nhm )

Ngay khi O2 sinh ra n s tc dng vi Al nguyn cht to thnh Al2O3

Lp Al2O3 nhn to to cho b mt nhm mt lp xp, thch hp cho vic mmu, ph bng dung dch trong b dn in tt th cn to cho b mitrng axit, do phi m bo nng H2SO4 thch hp, ngoi ra nng ionAl3+ cng nh hng n dn in ca dung dch trong b. Tuy nhin:

lm cho nng H2SO4 gim i v nng Al3+ tng ln, do vy c 2 ngy/ln,b phn KCS s kim tra v b sung H2SO4. Cn Al3+, trc y mun gim

nng Al3+

thng thay nc trong b, tuy nhin cng vic ny gy ngng trsn xut v mt nhiu thi gian v lng ph axit. Khc phc cc hn ch , myti sinh axit gip gim nng Al3+ nh cc ht c bit tch Al3+ khi hn hpaxit, v a axit tr li b mt cch tun hon, khng mt thi gian thay dungdch trong b ng thi tit kim axit.


11/19

2. S CNG NGH MY TI SINH AXIT

Process bath

1.3 1.4 2.2 3.3 3.4

1.1 1.2 2.1 3.13.2

P1

Bath water fill

Working tank fill

Press out working tank

Cycle

Hand

Auto

0

TactHand

Auto0

1

Shortage of compressed air

Faultwatertank

Faultbathtank

Bath Working

Tank Tank Tank

WaterLS

1

3LS

PSA

Waste water system

Air pressure

Fresh water

FaultP1

1X

2X

3X

4X

green green

Lamptest

Alarmquit

HornOff

green

1 2 3

Filter1

Hnh 5.1 S cng ngh ti sinh axit


12/19

3. THUYT MINH QU TRNH LM VIC CA MY TI SINHAXIT

Qu trnh lm vic ca my chia lm 3 giai on:

Bath water fill:

o L qu trnh bm axit vo tank 1 v bm nc sch vo tank 3.

o Vi tank 3, van 3.1 m, a nc sch t ngun Fresh water vo

tank 3, ng thi van 3.4 m a khng kh thi vn c trongtank 3 ra ngoi theo ng Waste water system. n khi y tank3 th n green ca LS3 s sng, lc ny van 3.1 v 3.4 ng li

ch giai on lm vic tip theo.o Vi tank 1, van 1.1 m, bm P1 lm vic a hn hp axit v ion

Al3+ (gi tt l axit bn) t b qu trnh qua filter 1 ( c tc dnglc bn s b ) v van 1.1 vo tank 1. ng thi van 1.3 cng mra thot kh thi sn c trong tank 1 ra ngoi theo ng wastewater system. Qu trnh xy ra lin tc n khi y tank 1, khi n green ca LS1 s sng. Kt thc giai on bath water fill.Thng thng, tank 3 s y trc tank 1.

Working tank fill:

o L qu trnh lm sch axit bn trong tank 2 ( working ). Trong tank2, Al3+ s c tch khi axit bn nh cc ht nha (mu vng) c

bit c kh nng gi li cc ion Al3+. Sau khi ion Al3+ b gi li,hn hp ch cn li axit sch, s c ch bm v b qu trnh.

o giai on ny, van 1.3 m ra, kh nn t ng air pressure c

bm vo tank 1, gip y axit bn t tank 1 qua van 1.2 ang m,sang tank 2. ng thi van 2.2 cng m y nc thi t tank 2ra ngoi. Qu trnh x l axit bn c thc hin ( ta c th ci tthi gian x l axit bn). n khi tank 1 cn, n green LS1 tt boht axit bn t tank 1, giai on 2 s dng li v qu trnh chuynn giai on 3.

Press out working tank:


13/19

o L qu trnh y axit sch tr v b qu trnh, v dng nc sch

ra tank working.

o Van 2.1 m, a axit sch t tank 2 v b qu trnh. ng thi van

3.3 m, a kh nn t ng air pressure vo tank 3. Nh c khnn, nc sch t trong tank 3 a vo ra sch tank 2 qua van 3.2.n nc sch dn chim ch ca axit sch, n khi n green LS3tt, bo mc nc tank 3 xung qu thp th cc van hin ti sng li. Kt thc giai on 3. Qu trnh li quay tr v giai on1: Bath water fill.

Ch thch cc tn hiu khc:

Gt Hand-O-Auto: iu chnh ch lm vic ca my l lm vic bngtay, tt, hay lm vic t ng.

Gt Tact: iu chnh cho my chy 1 trong 3 giai on khi lm vicbng tay

1X 4X: iu chnh s chu k lm vic ca my trong 1h. iu chnhbng cch gt Cycle.

Cc n bo ( mu ) bo s c ca tng thit b.

Larm test: kim tra xem cc n c hot ng bnh thng.

Alarm quit: Reset cc cnh bo ( sau khi ta nhn ra ).

Horn off: Tt ci bo.

4. THUYT MINH CC TN HIU IU KHIN CA MY TI SINHAXIT S DNG PLC S5-100U CA HNG SIEMENS

Cc a ch u vo u ra ca PLC S5-100 th hin trong bn v BLATT 6, cth nh sau:

Lit k u vo , u ra v phn cng vo ra.

Khiu

trn

ach

K hiucng tc

iu

Tn trn bngiu khin

ngha


14/19

PLC khin

Input431

0.0 S2.1 Lamp test Th n0.1 S7.1 Alarm quit Tt cnh bo0.2 S7.2 Horn off Tt ci

0.3 S7.3 H-O-A Lm vic bng tay0.4 S7.3 H-O-A Lm vic t ng0.5 S7.5 Tact Chuyn giai on khi hot ng bng tay0.60.7 S7.5 Cycle Thay i tc mt chu k lm vic

KhiutrnPLC

ach

K hiucng tc

iukhin

Tn trn bngiu khin

ngha

Input431

1.0 B8.1 LS1.1- Bo y tank 11.1 B8.2 LS1.1+ Bo li tank 11.2 K5.1 Timer m thi gian1.3 B8.3 PSA1- Bo p sut ng ng c m bo1.4 B8.4 LS3.1- Bo y tank 11.5 B8.5 LS3.2+ Bo li tank 11.61.7

KhiutrnPLC

ach

K hiu trongs

Tn trn bngiu khin

ngha

Output441

2.0 H9.1-Y1.1 1.1 n bo v iu khin van 1.12.1 H9.2-Y1.2 1.2 n bo v iu khin van 1.22.2 H9.3-Y1.3 1.3 n bo v iu khin van 1.32.3 H9.4-Y1.4 1.4 n bo v iu khin van 1.42.4 H9.5-Y2.1 2.1 n bo v iu khin van 2.1

2.5 H9.6-Y2.2 2.2 n bo v iu khin van 2.22.6 H9.7-Y3.1 3.1 n bo v iu khin van 3.12.7 H9.8-Y3.2 3.2 n bo v iu khin van 3.2

Output441

3.0 H10.1-Y3.3 3.3 n bo v iu khin van 3.33.1 H10.2-Y3.4 3.4 n bo v iu khin van 3.4

3.2S10.1 H-O-A P1

iu khin bm P1bng tay hoc t ng

Y10.1 P1 Van ca bm P1H4.1 n green P1 n bo bm P1 lm vic

3.3 H10.3 n red P1 n bo P1 s c3.4 H10.4 1X 1 chu k / 1h


15/19

3.5 H10.5 2X 2 chu k / 1h3.6 H10.6 3X 3 chu k / 1h3.7 H10.7 4X 4 chu k / 1h

Output441

4.0 H11.1 Fault bath tank Bt n bo s c tank 1

4.1 H11.2 Fault water tank Bt n bo s c tank 34.2 H11.3

Shortage ofcompressed air

Bt n bo khng p sutkh nn

4.3 H11.4 Bath water fill My ang giai on 14.4 H11.5 Working tank fill My ang giai on 2

4.5 H11.6Press out working

tankMy ang giai on 3

4.64.7

CHNG 6TRANG B IN CNG NGH PH BNG E.D

1. YU CU CNG NGH PH BNG E.D

Cc profile nhm sau khi c anot ha b 12/13 s c c mt lp Al2O3nhn to dy khong 20m to thnh lp xp, l tin cho qu trnh m muhoc ph bng cho sn phm. Cng ngh ph bng E.D c tc dng nhm to ra

lp ph nha trong sut to bng, v l lp bo v rt tt cho sn phm.

t c bng thch hp, yu cu quan trng l cung cp cho b phbng in p mt chiu n nh. Chnh v vy, nh thu tin hnh lp t mtb chnh lu cu 3 pha c iu khin s dng 6 thyristor.

2. MCH LC CA B CHNH LU

Cc thng s b chnh lu:

in p li: 3 380V

in p nh mc sau chnh lu: Ud=150V

Dng in nh mc sau chnh lu: Id=2000A

6 van thyristor: AT607S10

Mch lc c th hin trong sheet type N trong :


16/19

TA 1000/0.4A l bin dng o lng cung cp gi tr dng in li chocard TC2.

TC 380/420V, TM l bin p cp in p U2=420V cho chnh lu.

Cc thyristor c bo v dng ngn mch nh cc cu ch FU1.

Nhm R.1C.1 ni song song vi thyristor hn ch tc tng p trnvan.

T Cx c nhim v san phng in p Ud, R1: tiu tn nng lng trn tCx v b E.D khi ngt b chnh lu khi ngun

RS: in tr Sun phn hi dng Id v b hin th v b chun dng E306(A5).

Mt khc 17X1 v 5X1 bo tn hiu v Ud hin th trn Vn k.

Nhm hai ng c M1, M2 l ng c chy qut c nhim v lm mtcho cc van thyristor. Cc aptomat ng ct cho hai qut ny l QM1 vQM2. Tip im KM1 thc hin iu khin hai qut ny t tn hiu dor le KM1 mch iu khin.

QF3 l aptomat ng ct in cp cho mch bo v th t pha FV.

3. MCH IU KHIN CA B CHNH LU

Bn v sheet 2/4 type N l s khi ng pha, so snh, trn xung v pht xungvo cc van thyristor, tt c c nh cung cp thit b tch hp vo trong ccIC, c th nh sau:

Cc dy U3,V3,W3 c ni vo mch bo v th t pha FV qua 3 input

l L1,L2,L3. Sau output FV c 5 u c ni vi mch logic iukhin, vi 21-24 bo FV c ang lm vic, 12,11,14 bo th t phaWRONG hay RIGHT.

Bin p TC1 380/110V cp in p 110V cho cc thit b trong mchlogic.

Cc dy 7,8,9 cp cho TC2 gi tr tng ng ca dng in li,U1,V1,W1 cung cp gi tr v pha tng ng ca in p U2 trc chnh

lu, TC2 c vai tr ging nh mt b ADC, chuyn tn hiu tng t cnthit thnh tn hiu s c m ha, cp cho card E239 MA2.


17/19

Card E239 MA2 (A1) c vai tr ca khu ng pha, khu so snh, khutrn xung. Trong , in p iu khin c thay i nh vo vic xoay

bin tr RP5. in p Uref c card to ra trn chn 1-3, cn in p ts c a vo qua chn 1-12. Hai chn 4-5 l in p o lng phnhi mang thng tin ca Ud hoc Id. Nh vy trong card cn tch hp lutiu khin n nh Ud hoc Id. Hai chn 19-20 ni vi mch iukhin bo v dng cc i.

Sau khi to xung thch hp, cc xung t card A1 s cp cho van thyristorthng qua card A8.

Bn v sheet type N l s hai card cho php la chn iu chnh in pUd hoc dng in Id ca b chnh lu, c th nh sau:

Xem ct 61, sheet 4/4, khi cng tc SA1(cng tc chn iu khin theop hoc theo dng) v tr 0, cun dy KA1 khng c in nn tip imKA1 ( 46) m, tip im KA1 ( 50) ng. Tn hiu t card A5.1 s ivo card A1, ni vi card A5.1 l dy 6-5 mang tn hiu Ud, nn khi SA1 v tr 0, ngha l iu khin u ra chnh lu theo p. Tng t khi SA1 v tr 1, ta c iu khin u ra chnh lu theo dng. Cc chn 1-3 lchn ngun cho card.

4. THUYT MINH NGUYN L LM VIC CA B CHNH LU

4.1. Cc k hiu trn bng iu khin

Cc k hiu trn s sheet 4/4 v trn bng iu khin ca b chnh lu:

HL2: n bo ht chu trnh m ph bng.

E22: Ampe k v Vn k cho bit Id v Ud.

KT1: R le thi gian dng ci t thi gian m ph bng.

RP5: Bin tr iu chnh gi tr t cho Ud hoc Id.

A48: Ci bo m ph bng xong.

HL3: n bo sn sng lm vic.

HL24: n bo nhit b chnh lu qu mc cho php.

HL4: n bo dng in qua van thyristor vt qu mc cho php.


18/19

HL18: n bo dy cu ch t.

HL22: n bo ca t bng iu khin ang m.

SB1: Nt n start. HL1: n bo b chnh lu ang lm vic.

SB2: Nt stop.

SA1: Cng tc chuyn gia iu chnh theo in p hay theo dng.

4.2.Nguyn l lm vic ca b chnh lu cho b m ph bng:

Cc thng s ci t ban u: thng thng, cc cng nhn thng vn hnh bchnh lu vi in p 110V, v t thi gian m l 1 pht 30 giy

t SA1 trng thi 0 chn iu chnh theo Ud

iu chnh in p Ud, ta chnh RP5 ( chia t 0% n 99%) bit rnggi tr in p ln nht t c l 150V, nh vy ta chn mc khong73%. chnh xc hn ta quan st Vn k E22 iu chnh.

Xoay timer KT1 sao cho kim trng ( gi tr t ) mc 1 pht 30 giy.

Cc tn hiu bo v:

Nu mch iu khin c in, HL3 s sng bo sn sng lm vic.

Nu th t pha ng, tip im chn 11-14 ca FV s ng, n HL41mu xanh sng, nu th t pha sai, tip im chn 11-12 ca FV s ng,n HL43 mu sng, ng thi FV (21-24) m, khng cho php hthng lm vic.

Cc dy chy 11X2-33X2 s t nu nhit cc my bin p qu mccho php, dy chy 33X2-34X2s t nu nhit van thyristor qu mccho php. Khi cun dy KA2 mt in. Khi n HL24 bo qunhit s sng

Tng t KA3 mt in nu dy cu ch t, khi n HL18 bo tcu ch.

Nu ca t iu khin m (SQ1 m), KA4 mt in, n HL22 sng boca t ang m.


19/19

Nu QF1 cha ng, in p U2 cha sn sng n c khi ng pha,cng khng cho php hot ng.

Nu QM1, QM2 cha ng, cha sn sng chy qut lm mt van, cng

khng cho php hot ng.

Cun KA6 ch c in khi tt c cc yu t bo v m bo (KA2,KA3,KA4,QF1,QM1,QM2 c in), khi h thng mi sn sng lmvic.

Qu trnh lm vic:

n nt start (SB1), nt stop (SB2) khng n, th cun KM2 c in, r le

thi gian KT1 c in, bt u m ngc, n xanh HL1 sng ln boh thng ang lm vic.

Tip im KM2 ( 8 ) ng li, cm ti R4 s gim dng in khi ng.Tip im KM2 ( 68 ) ng li, cun dy KM1 c in.

Tip im KM2 ( 66 ) ng li, sn sng duy tr in cho cun KM2.

Tip im KM1 ( 3 ) ng li, cp in cho 2 qut lm mt.

Tip im KM1 ( 66 ) ng li, duy tr in cho KM2.

Tip im KM1 ( 80 ) ng li, cun KA c in.

Tip im KA ( 8 ) ng li, ngun li cp in cho b chnh lu,khng qua cm in tr R4. Chnh lu lm vic bnh thng.

Sau thi gian t ca timer, tip im KT1 ( 77 ) ng li. Ci h vn bo hiu ht thi gian m. Ngi vn hnh bm nt Stop (SB2),

cun KM2 mt in, r le KT1 cng mt in, tip im KT1 ( 77 )m ra, ci v n HL2 tt.

Tip im KM2 ( 68 ) m, KM1 mt in

Tip im KM1 ( 80 ) m, KA mt in, ngt ngun khi chnh lu, hthng ngng lm vic.

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Bao Cao Thuc Tap Co Khi Dong Anh