Application Examples of Air-piloted Valves

Transcription

1 ir-piloted Vlves Fetures Since the unit requires ir piping only, with no need for electricl wiring, it cn e hndled y person without fer of electricl shocks or current lekge. Using no electricity mens tht expensive equipment to protect ginst explosions, specil precutions, or mesures ginst electric noise re not to e required. Unlike electricl equipment, the construction is simple. The ssocited limit vlve is lso durle nd cn e used for long periods. ecuse hrmless compressed ir is used, there is no need for mjor construction work on the min or pilot ir line unlike tht of hydrulic piping, nd piping work is simple enough for nyone trined to perform. The power source is lwys compressed ir, so tht the system cn e esily used where no power supply exists. In ddition, it retins memory for out severl dozen minutes, nd cn therefore continue opertions even during power outges. Kognei ir-piloted Vlves Fetures ilot cp DiphrgmUpper side ody Diphrgm Lower side with holes eturn spring ody cp se ILOT Diphrgm type sic construction (125 type) ssured opertion Shrp, switching chrcterized y poppet nd diphrgm construction. The vlve set is lso relile. (Quick switching of min pressure helps to keep vlve set sel performnce.) Few rekdowns occur in this construction. The construction is extremely simple. poppet-type prevents glling or other prolems, even if smll foreign ojects hve entered inside. nd no sticking occurs even if the unit is left unused for long periods of time. It cn e used without luriction. With virtully no sliding prts, there is no need for luriction other thn for few specific models. This mens no rekdown due to insufficient luriction. Tolertes frequent opertions for long operting life The smll mss nd stroke of the moving prts mens smll inertil force which, long with construction with the lrge-cpcity synthetic ruer for soring impcts, ensures continuous high-frequency opertions nd long operting life. ny mounting direction cceptle No mtter wht direction is used for mounting, the construction cuses no troule to the opertion. Compct nd lightweight unique, compct design, with ody of light luminum lloy. ppliction Exmples of ir-piloted Vlves iston poppet-type sic construction (501 type) Using s lrge-sized stop vlve ir cylinder opertion Switching of ir pressure signl ILOT ilot cp iston sel iston iston sel oppet ody oppet eturn spring ody cp Vlve Circuit digrms ir tnk ilot line 3-port NC vlve 125V, etc. Vlve ir-piloted vlves 3-port NC 1250, etc. Chrt Min ir Vlve ilot ir ilot line Min ir Vlve ir-piloted vlves Internl pilot 2-, 3-port NC vlve holding type for retrcting cylinder 4-, 5-port 125-2, etc. (501-4, etc.) Circuit digrms ir cylinder Vlve 2-port NC vlve for retrcting cylinder 125MC, etc. For strt ilot ir ilot line ilot line c d 3-port vlve for switching signl 125V, etc. Min ir Signl Signl C C Signl C D D Signl D ir-piloted vlves ir-piloted vlves 3-port NC 3-port NO 250, etc , etc. ir cylinder opertion ilot ir IN Vlve ilot line Min ir ir-piloted vlves 4-, 5-port 3-port NC vlve254-4, etc. 125, etc. Circuit digrms Vlve Chrt The ir cylinder rod extends only s long s pilot vlve is pressed down. ir cylinder Chrt Momentrily push pilot vlve to switch ir-piloted vlve, nd then mintin tht condition. fter switching, let the ir cylinder rod extend, nd then push down limit vlve. ushing exhusts ir from the pilot line, switches off ir-piloted vlve, nd the ir cylinder rod retrcts. Circuit digrms for strt ilot c d ilot for signl ilot for signl ilot for signl C ilot for signl D Min C D c d C D ilot vlve Signl for strt Signl C C D Signl C D Signl D C D Chrt To otin signls " nd ", turn hnd operted vlves nd, nd open the ir-piloted vlves nd. Then, turning off the mnul vlve for strt (which is normlly left ) turns off ll of the ir-piloted vlves, (NO vlves) ', ', C', nd D', nd opens them up, nd signls " nd " pper. ilot vlve ir-piloted vlves (for mplifiction) ir-piloted vlves (for strt) Signl 939

2 Chrts for Selection of ir-piloted Vlves 2-, 3-port vlve (ir flow rte of ech model) Model of irpiloted vlve 3+34 TC vlve TC 2 vlve ir flow rte /min [ft. 3 /min.] (Supply pressure 0.5M [3psi.] (N) when outlet port vents to the ir) [4.2] [13.1] [13.1] 1000 [35.3] 0 [131] 400 [1] 90 [328] 1800 [5] 4-, 5-port vlve (pplicle cylinder ore size of ech model) Model of irpiloted vlve 4+34 TC vlve TC 2 vlve Cylinder ore size mm [in.] 20 25,32 [0.984/ [0.8] 1.20] [1.55] [1.99] [2.480] [3.0] [3.93] [4.921] [5.512] [.08] [.84] This re presents high cylinder speed is not required. Norml operting rnge Cylinder speed 0500mm/s [ in./sec.] This re presents high cylinder speed is required. (Cylinder speed: min mm/s [19.23.in./sec.]) Cylinder speed mx. 2000mm/s [.911.8in./sec.], min. 50mm/s [2.0in./sec.] Notes : 1. While the speeds shown in this grph ssume n ir supply pressure of 0.5M [3psi.] nd lod rtio of 0, the speeds will e virtully the sme in the rnge of 0.40.M [58102psi.], nd up to lod rtio of out %. 2. In generl, select vlve with mrgin of out 50 % for the required cylinder speed, nd then use speed controller to reduce the speed in opertion. 3. In considering the time required for the cylinder to mke one stroke, the cylinder dely time nd cushioning time need to e considered longside the cylinder speed. Differences etween Type nd Type ir-piloted Vlves type vlves (Continuous pilot pressure is needed to mintin the operting condition.) ilot vlve 3-port Vlve ody Diphrgm Norml condition type Vlves Operting condition ( ) The difference from the type vlve is the existence of ypss hole (smll hole) on the stem. This helps the pilot vlve to mintin its operting condition during momentry opertion. It is le to mintin the operting condition even if certin mount of ir leks from the pilot line. ilot vlve 2 ports ilot vlve 2 ports or 3 ports ypss Vlve ody Diphrgm Norml condition Operting condition Holding condition eturn condition Note :These shemtic digrms show the diphrgm type, 3-port vlves. The ypss for the 4, 5-port vlve is on the side stem. See the Operting rinciples for the type on p.94. Sfety recutions (ir-piloted vlves) Wrning Cution Others 1. ll types other thn the 2 (doule pilot) type re designed to use ir s the medi. For other medi, consult us. 2. lwys check the Ctlog, etc., when performing piping to products to ensure tht the connections re correctly done. Wrong piping could result in norml opertion of the ctutor, etc. For loctions suject to wter or to lrge mounts of dust, use cover, etc., to protect the vlve. In ddition, instll muffler, etc., to the port to prevent entering of dust. Intrusion of wter or dust could result in short-term functionl rekdowns, or in sudden drops in performnce or reduced operting life. 1. Use min ir pressure higher thn the minimum operting pressure listed in the Ctlog. 2. Set the pilot pressure to level suitle to the min pressure. n unnecessrily high pressure cn shorten the operting life. 3. If excessively throttling the port for opertion, set the pilot pressure t the min pressure or higher ( type). For detils, see the specifictions of ech series. 4. The type (internl pilot holding type) cnnot e used s 2-port vlve. For lrge ir flow rte, provide sufficient ir supply. In ddition, the port cnnot e used in choked condition. Instll speed controllers etween the vlve nd cylinder. 5. s with the norml type, use pilot vlve size tht offers enough mrgin when the type is operted s single pilot vlve. In this cse, set the min nd pilot vlves to the sme pressure. I-ILOTED VLVES SEIES 940

3 iston oppet Type ir-iloted Vlves c1/43/8 254 Series Symols Spring return norml type ( type) 4-port Spring return internl pilot holding type ( type) Specifictions Item sic model ort size c Min ilot Effective recv mm 2 Medi Operting pressure rnge M {kgf/cm 2 } [psi.] roof pressure Min ilot M {kgf/cm 2 } [psi.] Operting temp. rnge (tmosphere nd medi) C [ F] Mximum operting frequency Hz Luriction Mss kg [l.] type (norml type) type (internl pilot holding type) /4 3/8 1/4 3/8 1/8 0. ir 00.9 {09.2} [0131] {1.09.2} [131] See the tle Minimum ilot ressure {1.09.2} [131] (Use t the sme pressure s the min pressure) 1.35 {13.8} [19] 00 [32140] Not required 0.8 [1.8] Order s Flow te type (norml type) sic model ort size Option ort size ort size c lnk 1/4 03 3/8 Option Specifiction 0 With speed controller type (internl pilot holding type) sic model ort size lnk 03 ort size ort size c 1/4 3/8 uilt-in type speed controller cnnot e instlled into the type. Instll seprte speed controller (KSC21, KSC31, etc.) etween the vlve nd cylinder. 0.9 M 0.8 Vlve outlet pressure Supply pressure M Flow rte /min (N) How to red the grph When the supply pressure is 0.5M [3psi.] nd the flow rte is 40/min [2.1ft. 3 /min.] (N), the vlve outlet pressure ecomes 0.4M [58psi.]. 1M = 145psi., 1/min = ft. 3 /min. 94

4 Operting rinciples, Mjor rts nd Mterils Minimum ilot ressure Norml condition iston nd stem ilot connection port Min poppet Operting condition M [psi.] Min pressure Model 0 [0] 0.1 [] 0.3 [44] 0.5 [3] 0. [102] 0.9 [131] [] [22] [32] [44] [58] [3] Note: Set the type pilot pressure to the sme s the min pressure. Vlve ody Note: The type (internl pilot holding type) is identicl, except for the ypss hole (smll hole) on the side stem. For the operting principles nd methods of use, see p.940. rts ody oppet Sel Mterils luminum lloy (nodized) rss Synthetic ruer Time equired for Switching y ilot Line Length ( ) oth min nd pilot 0.5M [3psi.] ilot line inner dimeter 4mm [0.1in.] s ilot line length L m [ft.] Model 2 [.] [19.] 10 [32.8] 50 [14] 100 [328] How to red the tle For exmple, when using 10m [32.8ft.] pilot line to send signl, 0.5M ilot line length L ipe inner dimeter4 it tkes 0.3 second for the 0.5M switching opertion to turn it on nd 0.5 second to turn it off. ir-piloted vlve Dimensions (mm) Speed controller Order code: -0 type only NCc c 3 8Order code: -03 c 1 4 c 3 8Order code: -03 Wrench flts width Mounting hole ilot connection port c 1 8 c 1 4 NOc 1 4 c 3 8Order code: -03 Notes: 1. To chnge the speed controller instlled position to the port side, just rotte the vlve ody y 180 degrees. In this cse, ecomes NC, while ecomes NO. 2. uilt-in speed controller cnnot e instlled into the type. I-ILOTED VLVES SEIES 948

5 iston oppet Type c1/43/8 Mnifold ir-piloted Vlves M254 Series Order s M Stn. 13 M254-4 Stn. 14 M254-4 Stn. Stn. 1 M254-4E1-0-C100V Numer of units Sttion Vlve model Numer of units (numer of mounting vlves) Numer of units Sttion (vlve mounting position) Detils Stn.1 1st position from the left when fcing the, ports. Stn.2 2nd position from the left when fcing the, ports. Stn.3 3rd position from the left when fcing the, ports. Stn. th position from the left when fcing the, ports. Vlve model Model M M M 254-4E1 M 254-4E2 M 254-4SE2 lock-off plte (Order code: ) Enter the vlve models required for ech sttion. Note: 1. The prefix M of ech vlve model signifies solenoid vlve for mnifolds. Enter M in every order code. The order code for the vlpck cylinder is M254-4E1-0 or M The lock-off plte is used to close unused sttions. Dimensions (mm) Unit dimensions M2 M3 M4 M5 M L Mounting hole 1 1 Speed controller Order code: Note Stn.2 Stn.3 Stn.4 45 Stn L 254-4E1-0 Mnul override port c 1 4 Note: Shows the 254-4E2 nd 254-4E1-T dimensions NCc 1 4 NOc E SE E1-0-T ilot connection port c lock-off plte Order code: ) Wrench flts width 1 port c c 3 8 oth sides (temporlly plugged on one side) 100 Mnifold Mss (with vlves) Mjor rts nd Mterils Mounting vlve model Mnifold model M2 M3 M4 M5 M Single vlve unit kg [l.] Solenoid vlve ir-piloted vlve Single solenoid Doule solenoid Keep solenoid M254-4 M254-4E1 M254-4E2 M254-4SE2 M [.2] 3.3 [.3] 3.1 [.8] 2.2 [4.9] 4.2 [9.3] 4.9 [10.8] 4. [10.1] 3.3 [.3] 5. [12.3].5 [14.3].1 [13.5] 4.4 [9.].0 [.4] 8.1 [1.9]. [1.8] 5.5 [12.1] 8.4 [18.5] 9. [21.4] 9.1 [20.1]. [14.] 0.9 [2.0] 1.2 [2.] 1.1 [2.4] 0. [1.3] rts se lock-off plte Mterils luminum lloy (nodized) luminum lloy (nodized) 949