Multiposition Standard Electric Actuator Manual
Contents
1. Nouosrouavsn 28 ASSY 10 12121 1 ASSY 318 0 OF segzz 10 EL momo dW ASSV H3TIOHINOO 6 S EE 7 88612 1 S391430 LOST WINS OVL 313 sod INW EH v 89 808 08 01 8 8 X ZE 8 50 MIYOS ASSY 987124 dW 9 700 1 06 0 SWid MIYOS S1HVd 383H SASSV SHNSOTONS ANY 189124 2100101 Assv Tava v Se Lon SUSKA OL LON TIS ONY OOS UO SANTO Helly SEL JSETXPPILIS SSS L 10 02 224 LOW 804 ILIAW 21007 Assy G31l014X3 0357 38 LON TIVHS SNIV LNOO HOIHM 3HL LNSWN90G SIHL HOS 33s 213 804 un ASSY 2 HOS HSva aas 06822 0 assvHOLOW ALO 5 191 SLHYd 7 gt i v E a 5 o dais 2 E g EO2. TIVHS dO A1H3dOHd NIVIN3H TIVHS SIHL JO NOISSIWH3d Gassaudxa LNOHLIM SH3HLO OL 036010610 HO LON TIVHS TIOS HO aasn LON TIVHS SNIV LNOO HOIHM NOLLVWHOSNI 3HL ANY SIHL 62Z2c VIA NYHL TIVLSNI VIA NAHL ld NOILdO H uunar S6 se L 2992 LNOAV1 W3HOS SIHHO 6 22 1 1981 v alva 5 SNOISIA3H LZ X3 1ON IVHLO3N OVA 022 01 LOH OL SVIA NYHL NOLLWYAdO 022 HOS 9 d ONY Zd 1 N33AM 138 SVIA ASE Q3HIM SI GYVOd 0 N3HM ALON ane e 0 170090 e tO vc v 0Sd S MH 28 Technical Drawings
3. INDQIWIXVIN SSYSdNVITIIA OF d 18VdVvO SLNdLNO NOILISOd 31901 ANYL LIOA S 38V SLAdNI TIY ALON Si 2 Movida ALIHM 4315 13101A SOL ama 318VN3 LNANI 58 MOTI3A Sy 52 aad SL cm 85 015 1N3HHnO OL 772 v udnarvelooe G3IVILINI awa NOLLdlHOS3d SNOISIA3H 19 awings Technical Dr 2 SIHH9 SNINNIG Y ON 21901 19V 313 3zis aos GSLVILINI alva NOLLdIHOS3Gd SNOISIA3H ur n 7 SOd ILINW OLLVINH3HOS 47 X pre S319NV SNOLLOVHS du 00 5 OLA EFEN elv saw
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5. EN boo Skon PERPENDICULAR ENGRAVING SDUW Configuration ALIGNMENT INLET POSITION 1 PAIRED WITH PORT 180 OPPOSITE ENGRAVED RING EN 9004900 PERPENDICULAR STUW ENGRAVING Configuration Basically this procedure is a method of centering the perpendicular engrav ing on the selected port by determining the point at which flow begins when the engraving just starts to intersect the port and the point at which flow ends when the engraving ceases to intersect the port and centering the rotor between those two points 1 Plug the actuator in If the position indicator doesn t read 1 flip the switch to the HOME position 2 Place the valve or valve and standoff combination on the actuator By convention the factory alignment places the common port s at 12 o clock Re orienting the standoff or the slotted coupling in close mount applications on the square drive of the actuator allows three other possibilities For a valve on a standoff make sure the standoff butts all the way against the actuator so that the drive mechanism is completely engaged Tighten the clamp ring screw enough to keep the standoff from falling out when it is released but make sure it is loose enough to allow the assembly to be turned during the alignment procedure For a closemount valve make sure that the ends of the pin in the rotor are engaged by the slots of the coupling Tighten the clamp r
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7. 0 5 1 Nid Ob did 183206 2 192 Nid 9L 27 LIN S3H 0 09 N HI Nid 066 LAN 534 01309ScN FI 10982 OL LAN S34 002919 1 029 SIY va OEE SAY 00Zt LGH I MIL S 027 SAY IVSdWO l NOLONITHVG 60 L HOISISNVHL 2201 6091 1 46016092 AJISNY 1 15 Nid OL er 291609 AJ ISNV 82d Nid 9 1202609111 12026098 AJISNY LHOIVULS Nid 02 3av3H n VVELENLOH YL6NLOH WNOIS NOONIS 3010 DIWV39 49 0S 02Z99 1 AOS 22 DIINVH3O dvo 6 2 29991 8 21901 89 OOTWA 96 7 L E0 480 56 50 60 ILON dWnft 1nio 22 NO3 NO 14253 S6 LZ E0 WOHd3 HOJ TVNOILdO 2 76 0 90 98 ava SNOISIA3H 21 awings Technical Dr 20 YSN va du 9680 lt 0 Ol civic a ASSV LX3N 3215 JWS eiie 10313 SOd I
8. 1 NOllISOd O3dAL Suv A iH O N S 4314Y m 88612 DVL FE CA 022 60812 1 022 529 6822 1 509 022 529 56822 022 60812 1 022 01 822 1 01 022 01 5 822 1 0812 1 011 509 822 1 509 011 S99 S 822 l 20812 011 01 822 1 01 011 01 66822 1 022 60812 1 022 5 822 Sov 022 5 56822 1 022 60812 1 022 80 822 1 8 022 80 56822 1 0812 1 011 5 6822 1 sov 011 5 56822 1 0812 1 011 80 76822 1 8 011 80 56822 1 022 0812 1 022 91 822 1 9L 022 91 56822 1 022 0812 1 022 90 822 1 9 022 90 56822 1 96 00 11 859 SSONVHO 0812 1 011 91 6822 1 9L 011 91 8 822 1 0812 1 011 90 v 822 l 9 011 90 S 82c 1 seem NOZ GOV wunar pene maru v 022 60812 1 022 21 822 1 022 21 56822 1 022 60812 1 022 70 822 1 v 022 70 56822 1 TAIMINI ava un 208124 21 011 21 822 1 0812 1 011 0 7 822 1 v 011 0 5 822 1 SNOISIA3H e Wall SOd OOTWA e Wall SOd 29 awings Technical Dr 30 1325 Nouosroua YSN mE 822 822 ASSY awos uns 494 504 ILIN
9. Drawing 22729 Transformer Board Schematic Drawing 22730 Multiposition Electric Actuator Assembly Drawing 22835 Multiposition Electric Actuator Motor Assembly Drawing 22834 18 19 20 21 22 23 24 25 26 27 28 29 18 Technical Drawings 4 NoLoaroudvsn m 8 poriz g ASSY 3215 aos 16 1 9b LZ 19 913 504 IANN EE d NNOO d 18VO 3OVd3H3 LNI E D pee 9 B SNOlLOVH4 709 58 31431034S SS3 INn S3ONVH3HOL Nodn 3g TIVHSCONC A1H3dOHd NIVIASH TIVHS SIHL 30 NOISSIIWH3d 359 LNOHLIM SH3H O OL HO LON TIVHS QNV GIKIS HAQ 3 aasn LON TIVHS SNIVLNOO HOIHM NOLIVIWHONI ANY LNIWNOOA SIHL O N Movia HOLON Andino NOILISOd qoa 51 O N 13 1OIA anid I SOL MOTI3A 58 I Sy t 50 SL S3H3IVITTIIN 9 SLNAANI
10. 9Md OL H3HSVM SLNN Gav Y ava 917 22 Technical Drawings 10 133HS YSN 22222 4 3215 1195 G31 10V 313 SOd ILINW OLLVIN3HOS sjueuinajsu WA 42422 yid ans SIHHO SIHHO S3TONV O30 5 931512345 3SIMH3HLO J SSFINN 01 G3NHALL3H 38 TIVHS 30 A1H3dOHd SHL TIVHS LNIWNODOQ SIHL OO1VA NOISSIWH3d N3 LLIHM 55 LNOHLIM SH3H O 01 GASOTOSIC HO LON TIVHS 0705 HO aasn LON TIVHS SNIV LNOO LI HOIHM NOLLVWHOSNI SIHL 92120 941 96 68 LY OL INY zeSr NOJ 6 2 MAN 2981 ava SNOISIA3H Technical Drawings 23 WSN 9NIMVHG 92 22 3INVN 3714 ASSY LXAN SIHHO 92202 1 313 8504 ILINW H3QOON3 ASSY 80d OD sjueuinusu 6 n
11. Se SIHHO 500 10 SNOLLOVH4 091410345 SSIMUSHLO 8631 S3ONvH3101 38 TIVHS ANY A1H3dOHd 3H NIVIH TIVHS 1 SIHL NOISSIIWH3d Q3ss3udxa3 LNOHLIM SH3HLO OL 5 HO LON TIVHS 0105 aasn LON TIVHS SNIV LNOO HOIHM NOLLVIHOHNI 3H L ANY 1 SIHL uunar 96 61 8 92 22 ASSV 2 gt 19 12422 HOS cee Selec Gd vd v66L LNH 1 6D eS IgG Qo Qquvoa 40 adis SIHL SNId LNNOW tdl MZ OL LNH 269 SIHHO v6 v S OLALVGdN 2981 alva 5 SNOISIA3H 941 AIS ALISOddO LNNOW zee 22226 OLLVIN3HOS 384 L S01879HH VINOOL H3MOd MOTHOLVINDAY AS in v 0 2 066 01 QHOONOO 102 X Nid v ld e 88 0S7 MH v0 10 88 0Sr HOLO3NNOO 216 L 202 19 09 NOMWMOO 15 Nid 9 13N S3H LNH L 084 Vd L 0089199 1
12. This sets up a staging area for the approach to Position 1 6 Grip the valve and slowly rotate it clockwise until the first traces of flow are heard from the port of Position 1 The port to the left of the alignment inlet FIRST MARK STEP 7 7 While holding the valve steady use a soft pencil or THIRD MARK ink marker to make a mark EF on the standoff correspond c ing to the slot in the actuator c clamp ring This slot makes a clear fixed reference point for observing relative rota 5 tional positions In the case EU SECOND MARK of a closemount valve make SUUM this mark on the valve body Figure 41 Marking valve or standoff Figure 11 during alignment procedure 8 Continue the slow manual clockwise rotation of the valve body through the point of peak flow and beyond until the flow stops or is barely percep tible as in Step 6 9 Make another mark as in Step 7 Figure 11 10 Make a third pencil mark halfway between the first two and rotate the valve counterclockwise until this midway mark is reached Figure 11 16 Valve Alignments 11 While holding the valve steady firmly tighten the screw the clamp ring The rotor should be properly positioned at the point of maximum flow when the actuator is stepped to the next position Congratulations the procedure is complete It is a good idea to cycle the valve through all its positions to be cer
13. 21486 211 Controlling the Actuator with a Computer The first step in interfacing the Valco multiposition electric actuator to a computer or data system is to consult the user s manual of the control device to determine what kind of outputs are available and how many there are There may be relays open collector transistors logic level signal outputs or an RS 232 connector These are not cleanly delineated categories for instance BCD logic will involve one of the others The second step is to determine how the valve is to be moved The simplest implementation is for the control device to duplicate the STEP and HOME commands of the manual controller The other option is to access the positions randomly via BCD encoded logic level signals In this mode the actuator passes through each intermediate position stopping when it reaches the encoded position In either case as the valve sequences through each position it is possible that sample may flow briefly as each position is made STEP and HOME Commands Look at Drawing 21464 page 18 to determine the functions of the different wires in the interface cable All of the inputs are held at five volts called a logic high When they contact ground the voltage drop signals the logic circuits in the actuator to direct the motor to the appropriate point Locate the violet wire for HOME the grey wire for STEP and the white wire for G
14. 7 64 hex driver to loosen the socket head screw 6 32 x 5 8 in the stainless CR11 clamp ring on the actuator Figure 5 Any time the screw in the CR3 CR11 clamp ring has been loosened the alignment of the valve after replacement on the actuator should be checked The chances of proper alignment after reassembly are greatly enhanced by following the suggestion in the highlighted note found in the box above CAUTION In some applications it is desirable to delete the black right angle mounting bracket supplied as part of the actuator as when it is replaced by an oven wall or instrument panel For the valve mounting and driving hardware to function properly the thickness of the sub stitute must approximate the thickness of the bracket Consult the factory if problems are experienced Valve Alignment 13 2 Shock from heavy or continuous use Occasionally when valves are used in applications requiring a high duty cycle wear or shock can cause the screw and clamp ring to loosen Instru ment vibration may have the same effect This allows the standoff to move causing inaccurate rotor rotation The most obvious symptom is observable movement of the standoff valve or actuator which normally do not move when the valve is actuated Chromatographic Symptoms of Misalignment 1 Loss of flow or blocked flow When the valve body rotor and actuator are not in proper alignment the ports do not completely intersect the flow p
15. the point on its radius that is at 12 o clock If Step 1 was observed and the actuator was switched to HOME this will be at the notch strobe bit that denotes Position 1 Actuator Modifications Reassembly 1 Reinstall the encoder disc with the same point at 12 o clock but with its opposite face out If there is any question about the orientation of the disc refer to Figure 8 But remember that once Position 1 has been located according to that illustration the disc must be flipped over on an axis from 12 o clock to 6 o clock so that the opposite face is out to function properly when the direction of the motor is reversed Locate the three leads yellow gray and black that form the connection from the motor to the circuit board Looking at the connector observe the three small metal tines one for each wire Depressing the high point of the tine with a ball point pen or something similar will allow the wire to be extracted from the connector See Figure 9 Reverse the positions of the yellow and gray wires making sure the wires are pushed back in far enough to fully engage the tines Follow the steps for reassembly in the previous section DEPRESS HERE TO REMOVE WIRE YELLOW METAL TINES E BLACK Figure 9 Motor connector 11 Valve Alignment When the valve arrives from the factory installed on an actuator it is accu
16. to be taken off the actuator For a valve on a standoff Figure 6 Use the 9 64 hex driver to loosen the socket head screw 8 32 x 5 8 in the black anodized clamp ring on the actuator Pull off the standoff with the valve attached Remove the four 4 40 x 1 4 phillips head screws which secure the actuator cover One is accessed through the hole in the black right angle mounting bracket Slide the cover back far enough to allow the power cord and the ribbon cable to be disconnected from the circuit board Carefully note how they are attached so that they can be reconnected later Now remove the cover completely 8 Actuator Modifications STANDOFF ASSEMBLY 4 40 PHILLIPS SCREWS 4 40 PHILLIPS SCREWS VALVE BODY 0 pr d CAMPER 0 N Figure 5 Closemount assembly Figure 6 Standoff assembly connecting actuator and valve connecting actuator and valve 4 Disconnect the motor from the board Refer to Drawing No 22835 on page 29 5 Loosen but do not remove the two 8 32 x 1 1 4 hex head 9 64 screws which hold the boards to the gearbox Remove the board spacer assem bly as a unit lifting it straight up to clear the thin metal encoder disc 6 Removing the boards exposes the encoder disc which is the component that must be changed Use the 9 64 hex driver to remove the screw and washer which secure the disc and then remove the disc avoiding its sharp edges Handle th
17. 124 022 90 822 1 10 62 22 1 011 1811 2891241 011 90 822 1 20 62122 022 18 12 1 9912 1 022 0 822 1 10 62 22 1 011 1812 968124 011 01 WALI auvoa WALI HOLOW S WALI OOTVA 3 1na3H9S HSVG val 92 22 LOW 313 509 H3009N3 ASSV 809 SL val 8 4 MMH 0 0 S S4L 8 LV14 vl 901009801 1 LON 9010 09 80 WHS XION t val LE0 0S601 1 1606 09 60 NNOO X31ON vaz 902 805 05 97 1 1 X 2 8 50 5 MIYOS v3i HOS 5 33S LOW 313 504 INW H3INHOJSNVHL ASSY 99 OF viv 2258 45 18 6 X 8 H30VdS 6 val 313 504 LLINW 1 ASSV 824 8 0258 45 Wm 91921 41 0 92 H30vdS 2 val ab 80S OSMH 97 v L X 26 8 SOHS MIYOS 9 val 335 ASIA 9 viv 88 80S 0SMH X 2 8 SOHS MIYOS val 335 HOLON val Z dVHMALMH NOLAL dVHMAL 2 val 2812 0 Q3lJIQOW 5NILSVO ALO OO1VA NOlLLdIHOS3G 1511 5154 Warranty This Limited Warranty gives the Buyer specific legal rights and a Buyer may also have other rights that vary from state to state For a period of 365 calendar days from the date of shipment Valco Instru ments Company Inc hereinafter Seller warrants the goods to be free from defect in material and workmanshi
18. L ASSY 82d LC ve v0Sa X ve vOSC 2 911 H3INHOJSNVHL 11 ny x Suites 88 05 70 10 88 05 HOLO3NNOO 9 18 ou Sjueuunajsu 931312385 3SIMH3HLO d 9 Been 000 LGH I S 906 SAY 214 ANYWA Nodn 38 TIVHS 1700901 009 4 OVIH L NIVIN3H TIVHS SIHL JO NOISSIWH3d N3 LLIHM 55 LNOHLIM SH3HLO OL 035070514 HO Q3 1V3A3H LON TIVHS 10106 220019921 1 dWYY M NNOD e aasn 38 LON TIVHS SNIV LNOO LI HOIHM 3H L SIHL HOS HSvd aas NOISH3A Jn0L 20 209004 AAL 3 900 OINWHSO dvd 10 NMOHS SV 2 SVIA NYHL 8242280dl LLINW v MV H3INHOJSNVHLI 80 808 40 WOLLOd NOILLdIH2S3d Wall NOILLdO HOS NOLLdO ALON eue eumasw MV 82 22 Q8 v66L IDIA LO 3e Nouosroud YSN ON E 313 504 ILINW FOGOL HAWHOASNVHLL OLLVIN3HOS ge 00 SUNY fe SS31Nn S3ONVH3101 Technical Drawings 27 ANYWA
19. LINW SSV YATIOWLNOO SNOLLOVES 00 8 7 9 SS3TNn SSONVHFIOL NOdn 38 TIVHS 40 A1H3dOHd TIVHS SIHL OO TVA JO NOISSIIHSd NILLIHM 55 LNOHLIM SH3H1O 01 03501251 HO Q31V3A3H 38 LON TIVHS 0106 HO aasn LON TIVHS SNIV LNOO HOIHM NOLLVIWHOHNI 3H L 1 SIHL SN3 30 WOLLO HONOL LON Q InOHS AV1dSIG SNOISIA3H SSS rH JdiHlS 10 0 124 14 08 112 ASSY 1 0 8 15 5 D1 2 15 MIYOS 2 61124 ay 14610 3SN31 9 1211 H3TIOHINOO 9 19160911 16 Nid 91 NIVHLS v 06916091 A3 ISNV 3 18VO Nid 91 NNOD vis SANAS NOS 810121 SUNSOTONA 2 yuna 16 120 ASSVSN31103HHOO 10 507 24 V3 dW H3TIOHINOO ASSY 82d uunar 61006 SALS OL 2 12 NO3 8 ALO 4 NOILdILOS3G WALI OAL
20. ROUND After stripping a small amount of insulation from each of the wires touch the grey wire to the white wire and observe that the actuator advances one position Touching the violet wire to the white wire causes the actuator to rotate all the way around to Position 1 or HOME If the actuator is already in Position 1 nothing happens The contact must be maintained for at least 0 2 seconds to be recognized as valid These steps demonstrate the goal that is getting the control device to emulate the action of touching the two wires together Nothing else such as applying a voltage to one of the wires is involved For relays or open collector transistors which are essentially switches connect the three wires to the proper terminals as indicated by the manual for the control device Figures 2 and 3 NOTE A poor quality relay may cause the unit to step multiple times due to the relay s excessive contact bounce If contact bounce lasts longer than 50 ms the actuator will see this as repeated STEP commands GRAY GRAY o STEP 1 STEP WHITE gt e VIOLET gt en VIOLET gt 1 HOME WHITES go Figure 2 Relay connections Figure 3 Open collector transistor connections 4 Controlling the Actuator with a Computer Random Access Logic Input For devices with an RS 232 connector a simple solution is available in the form of the Valco Serial Valve Interface SVI The is a self co
21. S 089 SJH L OHZvcSu 8 Zv S3d L S8Xd80l XS HOLSISNVH LOLOHd L 2201609111 2001609 AJ ISNV 15 01 H3QV3H L 06 2200 1 50931 2 AOS 3n 2 ONON dvo L 1 46 2239 1 7YIXY ASE Jnozz 10919 L 627608041 LLINW 8 ddd 99 ALO OO1WA WALI 15811 adis 31150440 5131905 LNNOW HV3 IO LHVd ASILNACI NO HLIM OV1d HLIM N NY ALON 9V14 HLIM SNid 24 Technical Drawings 3INVN 31H 30 5 Nouoaroud YSN 2222 4 se ON 3715 SIHHO 1 25 91 19V 313 SOd ILTNW DILVIN3HOS sjueumsu oo eA 8831 S3ONVH3101 38 TIVHS ALH3dOHd NIVWAY TIVHS LN3AT19OQ SIHL JO NOISSIWH3d NILLIHM Q3ssaudxa LNOHLIM SH3HLO 01 HO LON TIVHS 0106 aasn LON TIVHS SNIV LNOO LI HOIHM NOLLWWHOSNI 3H L LNIWNOOA SIHL 20100 wand 86 61 8 027 ost OL 266 SIBHO 6 22 2
22. SAG WALI 15 SLYVd d ia IDIA 486 6 8 6 06 051 IH zeer NoJ O 86 9 1 606 OL HH OHO 0 NO3 8 SNOISIA3H 4399 LUVd ASILNACI Qquvoa NO 5 3uvnos HLIM SNid ALON 7 62125 SIHHO S6 EZ OL v6 e s 30 WOLLOd 75 15 1H3SNI H3 HOJSNVH L ALINV10d 2682 ZS8HENO3 v el SNOISIA3H 26 Technical Drawings LOS S vs O0b SEEND 1 SALON 33S 0 62 00 1 052 9001 QuvaNvis AOLL L0 6cZc2 22 SNOILdO 1dO SDVLIOA OOIVA 5 3AVN OILVIN3HOS 62122 8 ASSY LXAN 1 55 520 GALVINSNINN 55018 B SIHHO 2 gue GavolsaG 91 9 8011 MOT Nid 9 did 133005 105 LOW S13 604 LLIN 2808911 ONISSOHO OVIEL O1d0 Ol H3INHOJSNVH
23. VIGI Valco Instruments Co Inc Multiposition Electric Actuator Instruction Manual GENERAL DESCRIPTION 1 MANUAL USE OF THE MULTIPOSITION VALVE ACTUATOR 2 CONTROLLING THE ACTUATOR WITH A COMPUTER 3 STEP and HOME Commands Random Access with BCD Logic ACTUATOR 65 4 42442212222 7 Changing the Number of Positions Indexing Angle Reversing the Direction of Rotation VALVE ALIGNMENT 12 Causes Misalignment Chromatographic Symptoms of Misalignment Alignment Procedure TECHNICAL DRAWINGS 2 2 asa R 17 is N h sounds 30 MNL MEA 2000 Rev 1 06 Printed in USA Valco Instruments Co Inc VICI AG International 800 367 8424 sales Schenkon Switzerland 713 688 9345 tech Int 41 41 925 6200 phone 713 688 8106 fax AG Int 41 41 925 6201 fax valco vici com info vici ch This page intentionally left blank for printing purposes General Description Valco multiposition valves are used to select a flow from a number of different streams in gas and liquid chromatography and in process stream applications Switching them to the desired position can be done manually but is best done automatically with either a Valco multiposition air actuator or the random access Valco multipo
24. W ASSY Um 00 swouovus 9 sssNn ssowvesno ONvW3d NOdn 38 OIVA 30 TIVHS 1N3n 200 SIHL JO NOISSIHSd SH3HLO OL 088010510 NO LON T VHS 0108 HO T VHS SNI1NOO 11 HOIHM NOLIVWHOJNI JHL LN3WNIOA SIHL aunar 6 92 102 v alva IET SNOISIA3H eL 20 62 22 1 022 18712 1 912 1 022 507 822 10 62222 011 1812 0LI SOt vE822 l 20 62 22 1 022 1811 2091241 022 509 822 1 10 62 22 1 011 18 12 1 29124 011 509 82 1 20 62122 022 1812 19124 022 91 822 1 10 62 22 1 011 91 96822 1 20 62222 1 OZZ L8v 12 1 09512 41 022 21 822 1 10 62 22 1 07912 1 011 21 822 1 20 62122 022 18 12 1 022 01 10 62 22 1 011 1814 6 912 1 011 01 822 1 20 62222 022 1812 8912 1 022 80 822 1 10 62 22 1 011 1811 8912 1 011 80 822 1 20 62122 022 1812 219
25. ard but the other positions involve combinations of two or three wires To load the code for Position 3 twist the 1 s and 2 s wires together and touch them to ground For Position 5 twist together the 4 s and the 1 s A complete table appears below Position 0 Oo BCD Combination 15 25 15 25 45 45 15 45 25 45 25 15 85 88 15 105 10 s 15 1054 2 s 1054 2 s 15 10 s 4 s 10 s 48 15 10 s 48 25 Controlling the Actuator with Computer 5 DIn DIPE DIS DIH lt tr gt tq RUN MM DATA DOn VALID Figure 4 Input Output Timing Not to scale To implement the BCD logic attach the remote cable wires for the PRESET ENABLE 1 s 2 s etc to relays or transistor collectors The white GROUND wire must go to a point on the control device However direct connection to open collector transistor outputs may not be suitable in all environments the use of opto isolators may be required If in doubt consult an electronics design expert Software must then be created which will control the appropriate inputs in accordance with the timing diagram shown in Figure 4 The direct BCD position inputs DI1 for for BCD1 s through DI10 for BCD10 s must be valid before the PRESET ENABLE pulse DIPE goes low and should remain valid for the period td 1 6 milli se
26. assages on the rotor In the worst case there is no flow in any position but slight misalignment may eliminate flow from ports on one side of the valve only With a rotometer or a line placed into liquid gas flow may be observed between positions as the actuator cycles the valve In liquid applications blocked flow may cause pump shutdown or failure of other components due to pressure buildup 2 Mixing of samples In some configurations with large ports and their corresponding large flow passages which are very close together poor alignment can cause mixing of samples even when a flow restriction has not been observed This may be manifested as ghost peaks or poor reproducibility Alignment Procedure NOTE The alignment procedures for air actuated and electrically actuated valves are not the same For an air actuated valve see Technical Note 707 Operation Notes and Alignment Instructions Air Actuated Multiposition Valves Description The valve will have either one SD and SC types or two SF and ST types rows of ports evenly spaced around the circumference of the body See Figure 10 In addition there will be one SD and SF types or two SC and ST types ports offset to either side of these rows By convention Position 1 falls counterclockwise from these common port s when the valve is viewed from the end away from the actuator The rotor will have either one or two flow passages appearing as engraved rin
27. conds minimum after DIPE goes low The enabling pulse DIPE should remain low for the period 5 microseconds minimum When the STEP DIS or HOME DIH input is used it must be held low for the period ts 200 milliseconds minimum to be recognized as valid STEP and HOME operation may be effected with pulses as short as 50 milliseconds but it is not guaranteed Logic Output Some computers have actual BCD logic inputs and outputs by which the combinations indicated in the table on the previous page are generated by the software This allows a relatively straightforward setup but matching the logic sense between the actuator and computer is critical The input and output of the actuator are low true as supplied from the factory If the computer to be used requires a positive true logic consult the manual for the computer or interface board being used the BCD output of the actuator may be reversed by following these steps to change one of the integrated circuits 1 Unplug the actuator Remove the four 4 40 x 1 4 phillips head screws which secure the cover to the actuator assembly and remove the cover from the body of the actuator assembly 2 Remove the four 4 40 x 1 4 phillips head screws from the rear cover which allows the removal of the PC board inside the cover 6 Controlling the Actuator with Computer 3 Refer to Drawing 22721 on page 19 Replacing integrated circuit U2 a 4049 with a 4050 changes
28. continue the examples Position 5 has slots in fours and ones Position 9 has slots eights and ones and Position 15 uses the whole range 8 4 2 1 The last position location on 16 position disc utilizes the last option no slots at all The 4 x 2 6 x2 and 10 x 2 are slightly different The 4 x 2 is essentially an 8 position actuator but instead of reading out Position 1 through Position 8 it goes from Position 1 to Position 4 and then repeats the succession Like wise the 6 x 2 does two sequences of Positions 1 through 6 and the 10 x 2 does two sequences of Positions 1 through 10 r Position 1 r Position 1 r Position 1 r Position 1 4 POSITION r Position 1 16 POSITION 6 POSITION 8 POSITION 10 POSITION 12 POSITION r Position 1 r Position 1 m Position 1 4X2 Figure 8 Encoder discs 10 Actuator Modifications Reassembly 1 Position the circuit board assembly and reinstall it with the two 8 32 x 3 Using Figure 8 and the preceding description identify the slot on the replacement encoder disc which determines Position 1 With the motor toward you and the casting away install the new encoder disc oriented as in Figure 8 with the strobe bit of Position 1 vertical The part number should be facing you In the case of the x 25 either Position 1 bit may be vertical Be sure to use th
29. e correct number of washers between the disc and shaft so that the disc is positioned midway between the emitter and the encoder boards Screws NOTE If the assembly has come apart make sure the spacers are in the proper arrangement The two shorter spacers go between the assembly and the gearbox Also check at this point to make sure that the disc is not bent in such a way that it will come into contact with the board as it revolves Change the label on the cover to reflect the new number of positions Put the cover partially on and reconnect the ribbon and power cables to the board in the motor assembly It is necessary that they cross inside the cover Hold the ribbon and power cables out of the way against the transformer as the cover is repositioned over the motor assembly Put in the four 4 40 x 1 4 phillips head screws which hold the cover in place Plug in the actuator and step it through all its positions to see that it works properly Consult the section entitled Alignment Procedure on page 13 for help in properly installing and aligning the new valve on the actuator Consult the factory if additional help is needed Reversing the Direction of Rotation Tools you will need 1 9 64 hex driver 2 7 64 hex driver 3 1 or 0 phillips screwdriver Disassembly Follow the steps for disassembly on page 7 However before removing the encoder disc as described in Step 6 use a felt pen to mark
30. e disc gently so it does not get bent r Position 1 Actuator Modifications 9 Description of the Encoder Discs Ones The encoder disc provides a means of signalling the position of the STROBE BIT actuator and relaying that informa 2 tion to the logic circuit If the disc is thought of as consisting of five concentric bands like an archery target the outside band contains the strobe bits See Figure 7 These slots signal the logic circuit to ue eX read the position information and to SS stop the motor when the information conforms to the input command The next bands in order toward the center denote units of one two four and eight Twos POSITION 2 POSITION 4 Eights POSITION 3 Figure 7 Four position encoder disc In the 4 position disc illustrated in Figure 7 the location that corresponds to the strobe bit for Position 1 contains only a slot in the ones band so it registers as one Moving counterclockwise to the next strobe bit the slot is in the twos band and is read as two for Position 2 Since there is no threes band the information for Position 3 requires a slot which fills the ones band and the twos band registering as 2 1 or 3 Position 4 has simply the one slot in the fours band The 4 position disc affords the clearest illustration of the principles involved which are the same all the way up to the 16 position To
31. gs around the seal which intersect the common port s Flow passages perpendicular to the ring s connect the ring s to the selected port s STUW The only configuration which does not fall within this description is the STUW Unlike the standard ST these have one row of ports around the circumference with two common ports offset in the same direction The common ports are 180 apart so only one shows in Figure 10 Special instructions and descriptions regarding STUW s will be highlighted in this manner at several points in the procedures which follow 14 Valve Alignments ALIGNMENT INLET POSITION 1 ENGRAVED RING PERPENDICULAR ENGRAVING Configuration ALIGNMENT INLET l POSITION 1 2 PORTS ENGRAVED RING PERPENDICULAR SF ENGRAVING Configuration ALIGNMENT INLET C 00 cod 00 POSITION 1 ENGRAVED RINGS sc Configuration ea PERPENDICULAR ENGRAVING ALIGNMENT INLET 78 POSITION 1 2 PORTS ENGRAVED RINGS i s 1 ST Configuration PERPENDICULAR ENGRAVING Figure 10 Typical multiposition valve bodies and seals ALIGNMENT INLET POSITION 1 ENGRAVED RING
32. ing screw enough to keep the valve from falling out when it is released but make sure it is loose enough for the valve to be turned during the alignment procedure Valve Alignments 15 3 Establish a flow of clean gas 50 psi is adequate into the port offset away from the actuator This port called the alignment inlet in Figure 10 will be the designated inlet throughout this procedure STUW Establish gas flow into the common port at 6 o clock alignment inlet in Figure 10 4 With the valve facing you and the actuator behind the valve the port to the left of or counterclockwise from the alignment inlet corresponds to Position 1 See Figure 10 This is the opposite of valves on air actuators STUW With the common port at 6 o clock as the alignment inlet the port to the left of or counterclockwise from the common port at 12 o clock corresponds to Position 1 If the gas is flowing from the port in Position 1 go to Step 5 If you hear no flow grip the valve and rotate it either way as necessary the actuator keeps the rotor fixed until gas flows from this port NOTE When listening for flow it is helpful if the fittings are removed from the port under consideration but left in the adjacent ports If all the fittings have been removed install a loop connecting the two adjacent ports to bet ter isolate the sound of the flow 5 Grip the valve and rotate it counterclockwise a few degrees past the point where flow stops
33. ivered prepaid and Seller will bear all risks of loss until delivery to Buyer Buyer and Seller agree that this Limited Warranty shall be governed by and construed in accordance with the laws of the State of Texas THE WARRANTIES CONTAINED IN THIS AGREEMENT ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE This Limited Warranty supercedes all prior proposals or representations oral or written and constitutes the entire understanding regarding the warranties made by Seller to Buyer This Limited Warranty may not be expanded or modified except in writing signed by the parties hereto
34. ll be sufficient for most situations Consult the factory if additional help is needed 2 Manual Use of the Multiposition Valve Actuator 2 POWER SUPPLY 24 VDC models only Lv 3 3 il exul 5 5 TO 110 OR 220 POWER CORD 5 FEET INTERFACE CABLE 4 FEET 1 21421 01 CONTROL AND CABLE 4 FEET 1 21421 01 Plug the electric actuator into a power outlet 110 or 220 50 60Hz as required The LED indicator light in the control box Figure 1 will light up and indicate the position of the valve actuator Press the control box toggle switch momentarily toward HOME If the valve is in any position other than Position 1 it will go to HOME Position 1 If the valve is in Position 1 it will not move As the valve moves toward HOME it sequences through each position allowing the possibility that sample may flow briefly as each position is made Care must be taken to prevent possible sample loss or contamination Move the toggle switch momentarily toward STEP and the valve will advance from Position 1 to Position 2 If the switch is moved toward STEP again the valve will move from Position 2 to Position 3 6 188 2 77 is 385 Valco Instruments Inc MOUNTING BRACKET Ll
35. nar 6 Yanar lt 6 22 4 281 20 Technical Drawings 4 wouosowsven ae sm P ASSY LX3N SIHHO n ON SNIMVHG divos 14 25 SS Hd 97 X MIYOS T amp SNINNIQ H 02 22 1 10 414 504 IANN 2462 05 ANNOY 2 1 X 0v 300NVIS awa SHILSOVW3 ddH 3 ANN LO V 10413 G3AIWVHO Od 21 21901 ASSV ddd see in O m 3500 1VA Wall O30 SNOILOVE4 48 SSIMYSHLO 10 02222 1 1511 SLYVd WNOLIGGY Se SS3INN S3ONVH3TOL aNvWaa 38 TIVHS 30 NIVWSY TIVHS IN3WR2OQ SIHL JO NOISSIWH3d NILLIYM Q3ssasdxa SH3H LO OL 5 5 Q3 Iv3A3 38 LON TIVHS 0105 aasn LON TIVHS SNIVLNOO HOIHM NOLLVIAHOHNI 1 SIHL 702 sjueuinjjsu Ia JO OILVIW3HO2S 3dis 3LISOddO zc 138 G31 NO Q3TIVLISNI 0 0 88 09 HOLO3NNOO S08S9 MS l TIIHAYY9 SOd S HOLIMS ZHI 2916 160 81 dOW IWLSAYO ZEZLNOOM YMd 900HO1VIWM L3S33 ONOIN 91 91 8411 MOT 91 did 13005 9SNLESSANI 221
36. ntained unit complete with software that will convert commands from a computer into positional control for as many as two multiposition and four two position Valco electric actuators Designing a similar means of control for a computer without a serial port requires a little more thought and effort on the part of the user Refer to Drawing 21464 on page 18 to determine the functions of the wires in the interface cable All of the inputs are held at five volts called logic high When they are pulled to ground potential logic low the voltage drop signals the logic circuits in the actuator to direct the motor to the appropriate point Randomly accessing the positions involves two steps first a logic low signal must be applied to the proper BCD input lines to tell the actuator which position to go to then a logic low signal must be applied to the enable line telling the motor to turn on and find the specified position Locate the inputs which are labelled 1 s 2 s 4 s 8 s and 10 s plus PRESET ENABLE and GROUND Strip a small amount of insulation from each of these wires To demonstrate the two steps described in the previous paragraph first touch the brown wire 1 s to the white wire ground loading the code for Position 1 Then while the brown and white wires are still in contact touch the green wire PRESET ENABLE to the white wire ground to execute the move to Position 1 Position 2 4 8 and 10 are just as straightforw
37. p to the original purchaser During the warranty period Seller agrees to repair or replace defective and or non conforming goods or parts without charge for material or labor or at the Seller s option demand return of the goods and tender repayment of the price Buyer s exclusive remedy is repair or replacement of defective and nonconforming goods or at Seller s option the repayment of the price SELLER EXCLUDES AND DISCLAIMS ANY LIABILITY FOR LOST PROFITS PERSONAL INJURY INTERRUPTION OF SERVICE OR FOR CONSEQUENTIAL INCIDENTAL OR SPECIAL DAMAGES ARISING OUT OF RESULTING FROM OR RELATING IN ANY MANNER TO THESE GOODS This Limited Warranty does not cover defects damage or nonconformity resulting from abuse misuse neglect lack of reasonable care modifica tion or the attachment of improper devices to the goods This Limited Warranty does not cover expendable items This warranty is VOID when repairs are performed by a nonauthorized service center or representative For information about authorized service centers or representatives call or write Customer Repairs Valco Instruments Company Inc P O Box 55603 Houston Texas 77255 ph 713 688 9345 At Seller s option repairs or replacements will be made on site or at the factory If repairs or replace ments are to be made at the factory Buyer shall return the goods prepaid and bear all the risks of loss until delivered to the factory If Seller returns the goods they will be del
38. rately aligned and ready for use However anytime the clamp ring on the actuator is loosened as when removing the valve from the actuator for mounting through an instrument panel or oven wall the valve and actuator must be realigned so that the internal ports and flow passages on the rotor intersect properly CAUTION Before removing the valve from the actuator mark the factory alignment position of the valve CLOSEMOUNT Make temporary registration marks on the face of the valve where it lines up with the slot in the stainless clamp ring on the actuator STANDOFF Make temporary registration marks on the standoff tube where it lines up with the slot in the black anodized clamp ring on the actuator Do not remove the valve from the standoff assembly When this mark is lined up with the slot on reassembly the factory alignment will be approximately reproduced as long as the valve and the actuator remain in their original positions Causes of Misalignment 1 Removal of valve from actuator for mounting As referred to earlier mounting valves through a bracket or oven wall requires that the valve or valve standoff assembly be separated from the actuator In the case of a valve on a standoff this is accomplished by loos ening the socket head screw 8 32 x 5 8 in the black anodized CR3 clamp ring on the actuator using a 9 64 hex driver Figure 6 In valves utilizing a closemount assembly the removal is accomplished by using a
39. s Situations occasionally arise when it is desirable to alter an actuator so that the indexing angle is changed such as when changing from a 6 position to an 8 position valve Or it may be helpful when changing from air to electric actuation to reverse the rotation so that it will go the same direction as the air actuator These modifications can be accomplished by following the procedures below CAUTION Before performing any operations on the actuator make sure the actuator power cord is unplugged Changing the Number of Positions Indexing Angle Tools you will need 1 9 64 hex driver 2 7 64 hex driver 3 1 or 0 phillips screwdriver You will also need one of the following depending on the new valve type Product No Description 21536 4 position encoder disc 1 21537 6 position encoder disc 21538 8 position encoder disc 21539 10 position encoder disc 1 21540 12 position encoder disc 21541 16 position encoder disc 21543 4 x 2 encoder disc 4 column selection 21542 6 x 2 encoder disc 6 column selection 21978 10 x 2 encoder disc 10 column selection Disassembly 1 Switch the actuator to its HOME position and then unplug the power cord Remove the valve and its mounting hardware from the actuator For a closemount valve Figure 5 Use the 7 64 hex driver to loosen the socket head screw 6 32 x 5 8 in the CR11 clamp ring between the valve and the actuator This allows the valve
40. sition electric actuator described in this manual For most laboratory uses especially where a laboratory computer is available for control but compressed air is not the Valco multiposition electric actuator is the best choice for switching multiposition valves The Valco multiposition electric actuator is designed around a highly integrated microcontroller and is capable of detecting the number of valve positions for which it is configured as well as a number of faults Actuators are available in 110 VAC or 220 VAC models for any 4 6 8 10 12 or 16 position Valco multiposition valve The model numbers of the actuators are respectively E4 E6 E8 E10 E12 and E16 Or E4 220 etc An electric actuator can replace an existing air actuator and is compatible with most Valco close mount and standoff assembly hardware The actuator consists of a the actuator itself b a control box with LED display and c a 20 conductor interface cable An actuator typically takes four seconds to complete 360 that is a 4 position valve takes one second to move the 90 from Position 1 to Position 2 A computer or data system with external event capacity can be used to control the actuator using the supplied interface cable In such a quickly developing field it would be futile to try to give specifics for each possible application but the chapter entitled Controlling the Actuator with a Computer on page 3 provides some general instructions which wi
41. tain everything is functioning properly In some cases it is possible to do an additional check by simply looking down the fitting detail and into the port as the valve is stepped from position to position If it is a valve which has a relatively short distance from the bottom of the detail to the internal taper the engraved dimples on the seal are visible as they come into alignment with the port Consult the factory if additional help is needed CR3 CLAMP STANDOFF RING HWSC SC8 8B SCREWS 0 CR2 OVEN VALVE CLAMP WALL RING Figure 12 Standoff assembly connecting actuator and valve SLOTTED COUPLING CR11 HWSC SC6 6TDH VALVE CLAMP SCREWS 0 RING Figure 13 Closemount assembly connecting actuator and valve Technical Drawings Interface Cable Assembly Drawing 21464 Logic Board Drawing 22721 Logic Board Assembly Drawing 22720 Controller Drawing 21412 Encoder Board Schematic Drawing 22727 Encoder Board Assembly Drawing 22726 Driver Board Drawing 22724 Driver Board Assembly Drawing 22723 Transformer Board Assembly
42. the output from negative true to positive true Order Valco Product No 4050 4 Reinstall the board in the cover and reassemble the actuator and cover making sure that all the wires and cables are reconnected to the Encoder Board assembly When it is certain that the polarities of the actuator and the control device are compatible connect the 1 s wire of the actuator interface cable to the 1 s output the 2 s wire of the cable to the 2 s output etc If the timing restric tions for logic inputs are followed timing of the logic outputs will also be in accordance with Figure 4 The signal RUN indicating actuation of the valve will go high within the period tr 200 milliseconds maximum after DIS or DIH RUN will remain high until the motor stops and will then go low Position data at the outputs DO1 through DO10 will be valid before RUN returns low Error Signaling Errors or faults detected by the actuator logic are signalled by the display flashing in a coded sequence which indicates the problem The display will go off briefly once twice or three times followed by a pause before the cycle repeats 1 Indicates a fatal internal failure of the microcontroller 2 BCD position input is invalid the position requested cannot be found on the encoder disk Clear by entering STEP or HOME or a valid position 3 Indicates motor failure overheating or excessive load on the actuator Actuator Modification
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