Proportional pressure reducing valve type 3WZCDE6 is a

Transcription

1 LICION roportionl pressure reducing vlve type 3WZCDE6 3-wy electriclly controlled, proportionl pressure reducing vlve type 3WZCDE6 is used for reducing pressure in hydrulic system, in continuous wy, s function of current controlling the coil of n solenoid. he vlve mkes it possile to control pressure in ports nd, independently from vlue of pressure of supplying strem (chnnel ), chnnel is connected with the tnk. It cn e used in control systems of pumps, couplings, rkes. he pressure reducing vlve type 3WZCDE6 is intended for mounting in proportionl directionl control vlves type US16 s n initil vlve. NS6 up to 10 M up to 15 D SHEE - OER RION MNU NUL dm 3/min WK DESCRIION OF OERION 3WZCDE6-02/25 N12 Z roportionl pressure reducing vlve type 3WZCDE6 is 3-wy, direct-operted vlve. he min components of the vlve in 3-position version re following: vlve ody (1), proportionl solenoids (2) nd (3), spool (4) with mesuring pistons (5) nd (6), centering springs (7). In neutrl position (solenoid coil is de-energized), the spool (4) is kept in the middle position y the centering springs (7). orts nd re connected with the tnk y chnnel, port is shut-off. In this position, the reduced pressure in ports nd hs zero vlue. fter switching on the controlling current, e.g. n solenoid (2) the mesuring piston (5) nd the spool (4) is shifted in the direction of the solenoid (3). his results in opening the flow etween ports to nd to. t the sme time, the pressure produced in the port through the surfce of the mesuring piston (6) ffects the spool (4) in the opposite direction to the force of the solenoid (2). If the pressure produced in the port exceeds the vlve corresponding to the vlue of the current controlling the solenoid (2) the spool (4) will shift nd the flow opens from port to until the moment of chieving lnce, corresponding to the set vlue of current controlling the solenoid (2). In this wy, for ech vlue of current of the solenoid (2) coil stte of lnce t different vlues of forces is creted, which cuses tht the vlue of the reduced pressure in port is proportionl to the vlue of controlling current. In the sence of power supply, the spool (4) cn e shifted mnully y using the uttons (8). In 2-position version (with 1 solenoid from side or ) the opertion of vlve is nlogicl, ut the reduction of pressure occurs only in one of the ports or. ype 3WZCDE6-1 - WK

2 ECHNICL D Hydrulic fluid Wor orking pressure rnger Mxim imum flow f rter Hysteresis (for WM 150Hz) Repetility of work Working position Vlve weight Mxim imum curre c urrent of f the t sole lenoid coilc minerl oil Required fluid f clec lenline ness clssc ISO 4406 clss c 20/18/15 Nominl fluid viscosity 2 o 37 mm /s t temperture 55 C Viscosity rnge 2 2,8 up to 380 mm /s o o recommended 40 C up to 55 C Fluid temperture rnge (in tnk) mx -20 o C up to +70 o C mient temperture rnge - 20 o C up to +50 o C port port < 6% Q < ± 3% Q optionl 100 % Degree of pr otecti tection I 65 mx mx 3 up to t 10 M 0 up to t 3 M Rnge of f reduced press ure ports:, up to 2,5 M Working cycle Resistnce of cold solenoid coil (20 C) Electr lectronic regult tor (delivered on seprte order) o 15 dm 3 /min t p = 2 M version with 1 solenoid - 1,5 kg version with 2 solenoids - 2,1 kg 1,5 0,8 5,4 Ω 19,5 Ω 30RE20 cc. to dt sheet WK K RE20 E20D cc. to dt sheet WK RC20D cc. to dt sheet WK (when supplying stilized voltge 24V DC set the mximum vlue of current I mx ) M 2 cc. to dt sheet ville t ON NR WDOWICE wesite - electronic joystick (when supplying stilized voltge 24V DC set the mximum vlue of current I mx ) _ INSLLION ND OERION REQUIREMENS 1. Only fully functionl nd opertionl vlve cn e used. 2. During opertion one must keep proper viscosity of the hydrulic fluid recommended in this Dt Sheet Opertion Mnul. 3. In order to provide filure-free free nd sfe working of the vlve, one should systemticlly check: condition of electricl connection proper working of the vlve clenliness of the hydrulic fluid 4. Due to heting of the solenoid coil nd the vlve ody to high temperture, the vlve should e plced in such wy s to eliminte possiility of ccidentl contct with the coil or the vlve ody during opertion or one should provide suitle covers complint with the requirements of Europen stndrds: N - EN ISO nd N - EN In order to provide tightness of the vlve connection to the hydrulic system, one should keep the dimensions of the seling rings, tightening torques nd vlve opertion prmeters specified in this Dt Sheet - Opertion Mnul. 6. person operting the vlve must e thoroughly fmilir with the e content of this Dt Sheet - Opertion Mnul. WK ype 3WZCDE6

3 DIGRMS Grphicl symols of the proportionl pressure reducing vlve type 3WZCDE6... simplified symol detiled symol version 3WZCDE6.../... version 3WZCDE6.../... version 3WZCDE6.../... ype 3WZCDE6-3 - WK

4 ERFORMNCE CURVES 2 o mesured t viscosity ν = 41 mm /s nd temperture t = 50 C Depende ndence nce of f pressure from the t currec urrent of f thet sole lenoid coilc 3,0 2,5 2,0 chrcteristic curve of pressure in reltion to the current powering the solenoid coil p (I) p [M M] 1,5 1,0 0,5 0 0,13 0,27 0,40 0,53 0,66 0,8 0 0,25 0,5 0,75 1,0 1,25 1,5 I [] coil for I mx = 0,8 8 coil for I mx = 1,5 5 Depende ndence nce of f pressure from the t flow f rter 5 4 chrcteristic curves of pressure in reltion to flow rte p (Q); flow direction () () p [M M] Q [dm 3 /min / min] WK ype 3WZCDE6

5 OVERLL ND CONNECION DIMENSIONS 9 O9,4 4 counterores O5,3 4 holes ,5 45 0,75 40, , (min) 10 M5 depth 10-4 holes O7,6 (mx) - 4 holes (,,, ) 19 27,8 10,3 40, (min) r 0,01/100 0,63 0,75 5,95 16, ,55 31,75 32,5 1 - Solenoid from side 2 - Solenoid from side 3 - lug-in connector on side - type ISO 4400 (DIN ) 4 - lug-in connector on side - type ISO 4400 (DIN ) 5 - Seling ring o-r -ring 9,2 x 1,8 - pcs 4/set (,,, ) 6 - Dimension of vlve with 2 sole lenoid ids - on side, (version 3WZCDE6.../...) 7 - Dimension of vlve with1 sole lenoid - on side (version 3WZCDE6.../...) 8 - Dimension of vlve with1 sole lenoid - on side (version 3WZCDE6.../...) 9 - Distnce for dissemling the plug-in connectors - item 3, orting pttern of the suplte surfce complint with ISO 4401 stndrd designtion ISO (CEO 03); fixing screws M5 x cc. to N -EN- ISO 4762 pcs 4/set; tightening torque Md = 9 Nm 11 - Suplte surfce required ype 3WZCDE6-5 - WK

6 HOW O ORDER Numer of flow wys 3-wy =3 3 WZCDE 6 25 N Z4 * Nominl size (NS) NS6 =6 Series numer (00-09) - connection nd instlltion dimensions unchnged = 0X series 02 = 02 Reduced pressure rnge up to 2,5 M =25 Hydrulic digrm pressure reduction in ports nd = no designtion pressure reduction in port = pressure reduction in port = Mnul override solenoids with mnul override = N Solenoid coil coil for mx current I mx = 1,5 = 12 coil for mx current I mx = 0,8 = 24 Electricl connection plug-in connector type ISO 4400 (DIN )without LED = Z4 Seling NR (for fluids on minerl oil se) FKM (for fluids on phosphte ester se) = no designtion = V Further requirements in cler text (to e greed with the mnufcturer) NOES: he vlve should e ordered ccording to the ove coding. he symols in old re the preferred versions in short delivery time. Coding exmple: 3WZCDE6-02/25 N 12 Z4 WK ype 3WZCDE6

7 EXMLE OF LICION IN HYDRULIC SYSEM 3WZCDE6... M SULES ND FIXING SCREWS Supltes must e ordered ccording to ctlogue sheet WK Suplte symols: G 341/01 - threded connections G 1/4 G 342/01 - threded connections G 3/8 G 502/01 - threded connections G 1/2 G 341/02 - threded connections M14 x 1,5 G 342/02 - threded connections M16 x 1,5 he su upl lte sym ymol in old is the preferred erred vers ersion vi il lle le in shor ort delivery ery tim ime. Supltes ndfixing screws M5 x 50-10, 0,9 ccording to N - EN ISO pcs 4/set must e ordered seprtely. ightening torque Md = 9 Nm ype 3WZCDE6-7 - WK

8 ONR Wdowice S.. ul. Wojsk olskiego Wdowice tel fx WK ype 3WZCDE6