PVSK Module with Integrated Diverter Valve and P-Disconnect Function. Tech Note

Transcription

1 VSK Module with Integrated Diverter Valve and -Disconnect Function ech Note

2 VSK Module ech Note Contens Revision History able of Revisions Date age Changed Rev Jun 2004 All First edition AA Jan Japan location AB Jan , 6 Drawings changed BA Dec New back cover BB Contents Introduction... 3 Specification and Code Numbers for VSK Modules... 3 Specification and Code Numbers for VSK Spools... 3 VSK... 4 Dimensions... 6 Stay Bolt Set,VAS for VSK... 6 Specification Sheet Sauer-Danfoss. All rights reserved. Sauer-Danfoss accepts no responsibility for possible errors in catalogs, brochures and other printed material. Sauer -Danfoss reserves the right to alter its products without prior notice. his also applies to products already ordered provided that such alterations can be made without affecting agreed specifications. All trademarks in this material are properties of their respective owners. Sauer-Danfoss, the Sauer-Danfoss logotype, the Sauer-Danfoss S-icon, LUS+1, What really matters is inside and Know-How in Motion are trademarks of the Sauer-Danfoss Group. Front cover illustrations: , F300648, F and F drawing:

3 VSK Module ech Note Introduction Introduction Sauer-Danfoss now introduces VSK-modules with integrated diverter valve and -disconnect function. he new module is intended for cranes, telescope lifts and other applications that have special demands on functionality and safety. he VSK-module can be integrated in VG 32 valve groups for open- as well as closed-centre systems. Function of the VSK-module: When the diverter valve is in neutral position, there is no pressure (only tank pressure) in the -channel of the valve group. When the diverter valve spool is actuated in A-direction, it enables the basic modules in the VG-group to receive pump flow supply. When the diverter valve spool is actuated in B-direction, it enables the ( High ressure Carry Over) HCO-port in the VSK module and the -cannel in the valve group to receive pump flow supply. Specification and Code Numbers for VSK Modules Symbol Description Code no. Open and closed center inlet With pilot supply for electrical actuation Max. pump pressure 350 bar [5076 psi] Max. pump flow 120 l/min [31.70 US gal/min] 157B6961 = 3/4 HCO= 3/4 Specification and Code Numbers for VSK Spools 4 way - 3 position spool for fixed displacement pump HCO flow 40 l/min [10.57 US gal/min] Open neutral position -> 157B way - 3 position spool for variable displacement pump HCO flow 40 l/min [10.57 US gal/min] Closed neutral position -> 157B9658 VSK spools 157B9657 and 157B9658 must be option mounted - see example page 7 3

4 VSK Module ech Note VSK VSK HCO HCO VB VB HCO HCO V A As the VSK-module is provided with pump () and HCO (High ressure Carry Over) connections, the standard pump connection in V, VV or VM must be sealed with a steel plug (see example on page 6). Note that the steel plug is not included upon delivery. In neutral position, the spool in the VSK-module interrupts the connection from the pump to the -channel in the valve group. his not only ensures a low pressure (tank pressure) in the -channel, but also a low pressure-drop in flow circulating between pump and tank (see diagram on page 5). As the VSK-module replaces endplate VS/I, the code number field (field 11) in the specification sheet must be left open. In general, the diverter function must be specified as a working function VB, which means that VE, VSK spool and VM must be specified separately (see example on page 7). o ensure an adequate supply to the VE pilot reduction valve, the tank channel of VSK includes a backpressure valve. In open-centre systems, the pump flow must be min. 40 l/min (10.57 US gal/min) to maintain a sufficient pressure-drop across the backpressure valve. 4

5 VSK Module ech Note VSK VSK As the VSK-module has an integrated pilot oil supply, always use standard V 32 without pilot oil supply in VG 32 valve groups. VSK Characteristics ressure drop with VSK spool in neutral position ressure drop in V 5

6 VSK Module ech Note Dimensions Dimensions 85.5[3.366] 23[0.91] [1.46] 48[1.89] L 1 L 2 24[0.94] 23[0.91] 16.5[0.650] 12[0.47] 48[1.89] 24[0.94] 95[3.74] 69.5[2.736] 36.5[1.437] 36[1.41] A1 B1 A2 B2 A3 B3 A4 B4 35[1.38] 24[0.89] 62[2.44] 24[0.89] 27.5[1.083] HCO 22[0.87] V A Because of limited space conditions, VE and VM on the work sections have to be mounted as shown on the above drawing. Stay Bolt Set, VAS for VSK Qty, Basic modules L1 L2 Code no. Weight kg [lb] B [0.55] B [0.66] B [0.77] B [0.99] B [1.10] B [1.21] B [1.43] B [1.54] B [1.65] B [1.87] 6

7 VSK Module ech Note Specification Sheet VG 32 Specification Sheet Subsidiary / Dealer VG No. Customer Customer No. Application Revision No. Function A-ort 0 157B B B-ort p = 100 bar 157B a 157B B B B 4216 c b 157B 2100 LS A bar LS B bar 157B 2100 b a 157B B B B 4016 c b 157B 2001 LS A 100 bar LS B 100 bar 157B 2001 b a 157B B B B 4016 c b 157B 2001 LS A bar LS B bar 157B 2100 b a 157B B B B 4216 c b 157B 2250 LS A 220 bar LS B 220 bar 157B 2250 b a 157B B B B 3171 c a 157B 6 157B 157B B c a 157B 7 157B 157B B c a 157B 8 157B 157B B c a 157B 9 157B 157B B c a 157B B 157B B c Remarks B B 8024 Filled in by Date 991L1865 ver

8 roducts we offer: Bent Axis Motors Closed Circuit Axial iston umps and Motors Displays Electrohydraulic ower Steering Electrohydraulics Hydraulic ower Steering Integrated Systems Joysticks and Control Handles Microcontrollers and Software Open Circuit Axial iston umps Orbital Motors LUS+1 GUIDE roportional Valves Sensors Steering ransit Mixer Drives Sauer-Danfoss is a global manufacturer and supplier of highquality hydraulic and electronic components. We specialize in providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market. Building on our extensive applications expertise, we work closely with our customers to ensure exceptional performance for a broad range of off-highway vehicles. We help OEMs around the world speed up system development, reduce costs and bring vehicles to market faster. Sauer-Danfoss Your Strongest artner in Mobile Hydraulics. Go to for further product information. Wherever off-highway vehicles are at work, so is Sauer-Danfoss. We offer expert worldwide support for our customers, ensuring the best possible solutions for outstanding performance. And with an extensive network of Global Service artners, we also provide comprehensive global service for all of our components. lease contact the Sauer-Danfoss representative nearest you. Local address: Members of the Sauer-Danfoss Group: Comatrol Schwarzmüller-Inverter urolla Sauer-Danfoss (US) Company 2800 East 13th Street Ames, IA 50010, USA hone: Fax: Sauer-Danfoss ApS DK-6430 Nordborg, Denmark hone: Fax: Hydro-Gear Sauer-Danfoss-Daikin Sauer-Danfoss GmbH & Co. OHG ostfach 2460, D Neumünster Krokamp 35, D Neumünster, Germany hone: Fax: Sauer-Danfoss-Daikin LD. Shin-Osaka ERASAKI 3rd Bldg. 6F Nishimiyahara, Yodogawa-ku Osaka , Japan hone: Fax: