Download pdf - Tai Lieu Thi Nghiem Mang Truyen Thong Cong Nghiep EE3500

8/7/2019 Tai Lieu Thi Nghiem Mang Truyen Thong Cong Nghiep EE3500

1/21

1

Ti liu hng dn th nghim:

MNG TRUYN THNG CNG NGHIP

1. GII THIU CHUNG

1.1 Mc ch

Gip sinh vin lm quen vi h thng truyn thng cng nghip, c kh nng phn tch vtch hp truyn thng cho mt h thng tng ha cng nghip hin i. Mt s kin thcv k nng chnh cn t c:

Kh nng phn tch cu trc, chc nng v nguyn l hot ng ca h thngtruyn thng cng nghip

Phng php cu hnh v tch hp truyn thng cho cc thit b tryn thng cng

nghip Thit k giao din ngi my v vn hnh h thng qua h thng truyn thng

1.2 Yu cu thc hnh

Sinh vin trc khi n thc hnh phi c v chun b trc theo ti liu hngdn thc hnh trnh by cho cn b hng dn thc hnh. Nu khng t skhng c vo thc hnh.

Khi vo thc hnh tuyt i tun th theo ni qui ca phng v s hng dnca cn b hng dn. Sinh vin phi hon ton chu trch nhim nu gy ra saihng, s c do khng tun th ni qui hng dn thc hnh.

Sinh vin phi np bo co thc hnh cho cn b hng dn chm nht l mttun k t khi kt thc tt c cc bi thc hnh.

Bo co c th vit bng tay hoc in my, trnh by r rng sch s, th hinc ni dung chnh nh theo ti liu hng dn yu cu. Bn photo s khngc chp nhn.

1.3 M t bi thc hnh

Bi tp thc hnh s gip minh ha v trang b cho sinh vin kin thc c bn, thc t mtcch trc quan v h thng truyn thng cng nghip hin i c xy dng vi thit b dotp on Rockwell Automation ti tr. Vi nhng kin thc l thuyt v nguyn l logic hotng mt cch h thng c trang b trn lp, sinh vin c th tip cn v bc u lmquen thc hnh vi nhng nhim v thc t c bn thng gp trn h thng thc. Bi thchnh sc chia lm 2 phn chnh:

Phn 1: Tm hiu v lm quen vi h thng tng ha Rockwell Automation baogm cc khi nim c bn, cng c pht trin v minh ha vi cc v dn gin vcc chun truyn thng nh DeviceNet, ControlNet..

Phn 2: Trn c s nhng kin thc c hc v lm quen, sinh vin s thchnh nhng k nng c bn nh, cu hnh mng, cu hnh d liu v xy dng tchhp ng dng truyn thng cng nghip vi cc chun h tr.

Ni dung thc hnh sc chia thnh 2 bui v sc thc hin trong 90 pht.

Trng HBK H NiKhoa in

B mn iu khin Tng


2/21

2

2. NI DUNG BI THC HNH

2.1 BI 1: TNG QUAN V H THNG IU KHIN CNG NGHIP

2.1.1 Mc ch thc hnh

Bi thc hnh gip hc vin lm quen vi m hnh mng cng nghip ni chung v h thngmng truyn thng cng nghip ca hng Allen Bradley ni ring. Bi th nghim, gip hcvin bit cch cu hnh v cch s dng cc dch v ca mt vi mng truyn thng tiubiu ang c s dng trong thc tin. T hc vin c c hi tip cn trc quan v mhnh h thng iu khin cng nghip.

2.1.2 M t h thngHnh 1 di y minh ha mt h thng iu khin v gim st tiu biu gm 3 cp:

Cp trng: Cc thit b chp hnh, cc thit bc ni mng vi nhau thng quamng DeviceNet.

Cpiu khin: Gm cc PLC c kt ni vi nhau thng qua mng ControlNet. Cpiu khin v gim st: Gm cc PC, PanelView; cc thit b ny c kt ni

vi nhau v kt ni mng vi cp iu khin thng qua mng EtherNet.

2.1.3 Nhim v th nghim

A. Nhim v chun b nh

Tm hiu cu hnh mng v nguyn tc hot ng ca cc h thng mng:DeviceNet/ ControlNet/ EtherNet da trn ti liu tham kho.

Nu cc c im k thut c bn ca h thng mng EtherNet/ ControlNet/DeviceNet? So snh cc c im ny gia cc h thng mng?

Hnh 1: H thngiu khin cng nghip


3/21

3

Th no l t cu hnh mng? Ti sao phi t cu hnh mng? Nu phng phpt cu hnh cho mt h thng mng ni chung v ly v d mng EtherNet hocDeviceNet/ ControlNet vi cc thit b ti PTN Rockwell Automation .

Trnh by c ch trao i d liu trong mng EtherNet/ ControlNet/ DeviceNet.

Nhn xt v tnh nng v phm vi ng dng ca EtherNet/ ControlNet/ DeviceNet.

B. Nhim v ti phng thc hnhTm hiu v tr li cc cu hi sau y:

Da vo m hnh h thng iu khin cng nghip trn bn hy xc nh tng thit bc th ti mi cp: Model, cc module truyn thng, module I/O, cc chun giao tip,cable kt ni gia cc thit b ?

Tm hiu kt ni gia cc PC v PCL; gia PLC v cc thit b trong tng cp, vgia cc cp vi nhau? Tm hiu cch u dy ni mng gia cc thit b trong mngv gia cc mng vi nhau.

Tm hiu cc phn mm phc v cho vic kt ni, lp trnh iu khin, iu khin vgim st trn PC: Mc ch s dng, chc nng, nhim v, trong h thng iu khincng nghip. Phn mm RSLinx, RSView32, RSLogix5000, RSLogix Emulate5000,RSNetWorx, Panel Builder32.

Phn 1: S dng phn mm RSLinx t cu hnh mng EtherNet:

Giao din chnh khi khi ng phn mm RSLinx nh hnh di y:

Thit lp giao tip truyn thng EtherNet/IP vi biu khin (PLC)Phn mm RSLinx l phn mm kt ni gia biu khin RSLogix v phn mm

RSLogix 5000. truyn thng vi biu khin, ta phi cu hnh phn mm RSLinx ph

hp vi loi cng truyn thng hin c:


4/21

4

a chEtherNet(MAC): a chc gn cho mt m un trong h thng:

+ M un ny lun lu gia chEtherNet ca n.

+ Xc nh a chEtherNet ca thit b trn nhn.

+ Dng ca a chEtherNet: xx:xx:xx:xx:xx:xxa chIP: a chn nh cho mt m un truyn thng trn mng Ethernet c th.BOOTP:Cu hnh mt thit b yu cu mt a chIP trn mt mng EtherNet t my chBOOTP.

BOOTP Server:chng trnh phn mm nhn cc yu cu BOOTP t thit b EtherNet vn nh a chIP.

Kt ni thit b EtherNet/IP vi my tnh qua cp Ethernet

Gn a ch IP cho biu khin hay m un truyn thngNu khng c kt ni ni tip vi biu khin

1. Khi ng phn mm Server BOOTP

Start programRockwell softwareBOOTP-DHCP ServerBOOTP-DHCP Server

Hay


5/21

5

StartProgramRockwell softwareRSLinx toolsBOOTP-DHCP server

Khi bn ng phn mm BOOTP server, bn sc nhc save li nhng thay i.

+ Nu bn mun ghi li a chIP m bn n nh cho thit b, hy save s thay i li.

+ Thit b s lu gia chIP cho d bn c lu li nhng thay i y hay khng.

Nu bn c kt ni ni tip vi biu khin

Phn 2: S dng phn mm RSLogix 5000 cu hnh a ch IP cho biu khin

Cc bc thc hin: Ci t biu khin c s dng a chIP.

- Kt ni biu khin vi my tnh thng qua cp RS-232.

- Khi ng phn mm RSLogix 5000.

- Trong mc Controller Organizer, chn properties phn EtherNet port.


6/21

6

- Chn tab Port Configuration

- Nhp a chIP

- n Apply

- n OK

Phn 3: S dng phn mm RSNetWorx cu hnh mng DeviceNet khi offline:

-

Bc 1: Chun btrc khi thc hin- Bc 2: To mt file cho mng

- Bc 3: Ngt mng

- Bc 4: Cu hnh tng thit b

Thc hin c th cc bc:Bc 1:chun b trc khi thc hinGi thit danh sch cc thit bt vo mng v a chnh bng di y:

-

Bc 5: Cu hnh my Scanner- Bc 6: Lu

- Bc 7: Bo co RSNetWorx

- Bc 8: Download cu hnh tmng


7/21

7

Bc 2:To ra mt file cho mng: Phn mm RSNetWors s lu tr thng tin v cu hnhca mi thit b trn 1 file my tnh: - To mt file cu hnh DeviceNet

- t tn File lu tr cu hnh mng:

Bc 3:Ngt kt ni mng

ci t cu hnh, s dng phn mm RSNetworx xy dng nhng hnh v ha vmng. thc hin iu ny, chng ta hon thnh cc bc sau cho mi thit b:

Bc 4:Cu hnh cho tng thit b:


8/21

8

Thng thng, mi thit b s c nhng thng s th hin c tnh cho thit b.

cu hnh offline cho thit b, ta thc hin 2 bc: nh r a chca tng thit b

Cu hnh thng s cho thit b


9/21

9

Bc 5:Cu hnh my ScannerMc ch truyn thng cc thit b trong mng. chng ta ci t danh sch qut cc thitb trong my Scanner. Sau ta nh ngha vng nh cho d liu ca tng thit b.Thc hin

-

Upload cu hnh hin ti ca my Scanner

- Xc nh c tnh ca my Scanner


10/21

10

- Thit lp Alignment Option [Alignment Option m ta la chn p dng cho cu vo v u

ra]

- Gn cho mi thit b [thc hin bng tay] mt vng nh


11/21

11

Ch : nu ta s dng Automap on Add th ta b qua phn ny v khi mi thit b c

gn mt vng nh.Thc hin gn a chbng tay cho thit b:

- Download cu hnh cho my Scanner

1. Upload v lu Netword fileMt khi bn cu hnh xong h thng, upload ton b h thng v lu file. S ct tr nycu hnh tng thit b trong file offline.


12/21

12

2. Thc hin mt bo co NSNetWordx.

Ni dung ca bi bo co:- Thit b trong mng.- a chvng nh ca mi thit b trong my Scanner.- Cu hnh mi thit b.


13/21

13

2.2 BI 2: XY DNG GIAO DIN GIM ST THU THP S LIU

CHO H THNG IU KHIN N GIN

2.2.1 Mc ch th nghimGip hc vin tm hiu cc phn mm, kh nng tch hp v thit k giao din iu

khin v gim st trn PC cho mt h thng iu khin n gin, thng qua vic s dngphn mm RSLogix 5000 v RS Linx.

2.2.2 Nhim v thc hnh

Kt ni RSLogix 5000 vi PLC. S dng phn mm RSLogix 5000 lp trnh cho

PLC ca hng Rockwell, to kt ni gia RSLogix 5000 v PLC ti phng th nghim thng

qua cng Ethernet I/P, s dng RSLinx cu hnh kt ni. (Cch kt ni nh trnh by

bi th nghim s 1).

To mt chng trnh trong RSLogix 5000:

Khi ng RSLogix 5000.

Ta chn File-> New s hin ra ca s New Controller.

Type: Loi PLC cn lp trnh.

Revision: Phin bn phn mm.

Name: Tn ca chng trnh. VD: My_Project_1.

Descripton: M t chng trnh.


14/21

14

Chassis Type: Loi khung ca PLC.

Slot: V tr ca biu khin trn khung.

Create In: Th mc cha chng trnh.

!!!Lu khit tn:Trong mt chng trnh Logix 5000, c thnh ngha tn cho cc phn tca chng trnh

nh l biu khin, a chd liu (tags), th tc, mun vo ra I/O,Tn chc php cha cc chci, ch

s v gch di, phi mu bng chci hay gch di, tia 40 k tv khng c cc gch di lin tc hay

k tip nhau,

Khai bo xong cc thng s ta n OK, nh vy ta to ra mt chng trnh

My_Project_1 c ui .ADC trong th mc C:\RSLogix 5000\Project.

Cu hnh biu khin: vo Edit -> Controller properties s hin ra ca s di

y, lc du l cc thng tin mc nh ca biu khin ta c th thay i cc thng tin theo

mong mun.

General: cha ng cc thng tin ban u ca biu khin.

Date/Time: cu hnh mi gi v trng thi thi gian ca biu khin.

Serial Port: Cu hnh thng s cc cng ni tip ca biu khin.

System Protocol: Cu hnh cc thc giao tip gia cc cng ni tip

dng DF1 point to point, DF1 Master hay DF1 Slave.

File: xem li cc thng tin ca chng trnh .

To v cu hnh module vo ra I/O: Kick chut phi vo I/O Configuration -> NewModule : ta tm v add cc module vo ra ca PLC bt u l cc module truyn thng , cc

module Digital I/O, Analog I/O, cc module khc v cc module c bit.


15/21

15

V d: Vi PLC CompactLogix 1769-L32E ta add module truyn thng 1769-SDN/B:

Click vo communication -> chn 1769-SDN/B n OK.

Ta t tn cho module v d: Truyn_thng, phin bn (Revision) ta chn l 2,

Slot 1( v tr ca module trong khung , hay v tr ca module trn PLC).

Chn xong n OK.

Tip tc n OK.

Tip theo ta add cc module DigitalDC Input 1769-IQ32, Digital Output

1769-OB32, Analog Input 1769-

IF4 v Analog Output 1769-OF2.

Lp trnh bng gin thang (Ladder)

Ta vo Tasks-> Main Task->

MainPrograme-> MainRoutine

xut hin ca s sau:


16/21

16

2.2.3 Chun b thc hnh

a/Kim tra hotng ca b chuyni I/P:Kt ni cc thit b trong m hnh theo ssau:

Hnh 2.1. S kim tra hot ng ca b chuyn i I/P

iu chnh R1 cho p sut t 25 psi trn G1.


17/21

17

tn hiu ra t b ngun 38-200 mc nh nht (4mA) th p sut trn G2 l 3 psi

ng vi van kh nn m hon ton.

iu chnh tn hiu ra t 38-200 ln mc cao nht (20mA) th p sut trn G2 l 15 psi

tng ng vi van kh nn ng hon ton.

b/ Kim tra hotng ca cm bin p sut

Kt ni cc thit b theo s sau:

Hnh 2.2. S kim tra hot ng ca cm bin p sut

M van V2 v V4.

Kha R2 cha cp kh vo m hnh. Ta iu chnh c c 4 mA trn ng ho

tng ng l 0 psi trn G5.

Sau ta m v iu chnh R2 n khi c p sut 10 psi trn G5, ta iu chnh

c c 20 mA trn ng ho.


18/21

18

Sau khi ta iu chnh xong th lc tn hiu phn hi t cm bin 420 mA s tng

ng vi di p sut 010 psi.

2.2.4 Thu thp s liu qu trnh iu khin p sut s dng phn mm

RS Logix 5000

a/ Chng trnh (vit di dng gin thang)

Hnh 2.3. Chng trnh nhn dng

b/ Tin hnh thu thp s liu

Kt ni cc thit b theo s sau:


19/21

19

Hnh 2.4. S th nghim

Khi ng RSlinx kt ni PC vi PLC dng nhn dng.

Khi ng RS logix 5000 to chng trnh iu khin v np chng trnh vo PLC.

To trend v th theo cc bc sau:

Kick vo trend chn New Trend.

t tn d n v chn chu k trch mu.

Chn bin cn v th.

Chn mu hin th bin cn v.

Chnh thng s trc ta .


20/21

20

Click vo Apply -> OK. Kick vo Run nu mun v th v click vo

Stop nu mun ngng v.

M van V1, V3 v V4.

iu chnh R1 v R2 cho p sut 25 psi trn G1 v 10 psi trn G2.

van kh nn ch kha hon ton.

Sau ta tng dn m van kh nn c 10% mt ln, ng vi mi ln th nghim ta

thu ly th. T mi th thu c ta tnh ton cc tham s v ghi vo bng sau:

m van(%) k T(s)

10

20

100

Trung bnh

Trnh by kt qu th nghim thu c:


21/21

Lu :

V van kh nn l van tc ng ngc nn trong qu trnh th nghim ta c s

quy i nh sau: mvan = 100% - mvan thc.

V van kh nn l phi tuyn nn khi ta th nghim cc gi tr m van khc

nhau s cho ta cc gi trkv T khc nhau. Chnh v vy, ta s ly gi tr tbk v

tbT thit k biu khin.

3. Ti liu tham kho

[1] Lu Hng Vit: Bi ging Mng truyn thng cng nghip.[2] Hong Minh Sn: "Mng truyn thng cng nghip" NXB Khoa hc k thut 2005.[3] Cc ti liu tham kho t trang web: http://www.rockwellautomation.com/

th nhn dng vi m van:

a) 30%

b) 50%

c) 70%