Variable Displacement Pump A7VO

Transcription

1 rueninghaus Hydromatik Variable Pump 7VO eries 6, for open circuits axial tapered piston, bent axis design izes Nominal Pressure 50 bar Peak Pressure 400 bar E 92202/07.95 E 92202/07.95 replaces 0.9 Variable displacement pump with axial tapered piston rotary group of bent axis design, for open circuit hydraulic drives. This pump is suitable for both mobile and industrial applications. Comprehensive program of control devices available. The robust taper roller drive shaft bearings are designed to give long service life. Output flow is proportional to drive speed and pump displacement is steplessly variable between maximum and zero ( to = 0). rueninghaus Hydromatik /20

2 E 92202/07.95 Variable displacement pump 7VO Ordering Code / tandard Program Fluid Mineral oil (no code) xial piston unit Variable displacement, bent axis design Mode of operation Pump in open circuit 7V O izes in cm izes 250, 55, 500, 000 see E 9220 Control and adjustment devices Constant power control L L L H LH L H2 LH2 L H5 LH5 L H6 LH6 L L L D LD L G LG ) L D H LDH L D H2 LDH2 L D H5 LDH5 L D H6 LDH6 L D LD Pressure cut-off integral (fixed setting) emote pressure cut-off H H2 hydr. stroke limiter p = 25 bar, neg. control hydr. stroke limiter p = 25 bar, pos. control H5 hydr. stroke limiter p = 0 bar, neg. control H6 hydr. stroke limiter p = 0 bar, pos. control electrical stroke limiter Constant pressure control D D D G DG emote constant pressure control Hydraulic control, HD HD pilot pressure dependent HD 2 HD2 HD G HDG HD 2 G HD2G pilot pressure increase p = 0 bar emote pressure cut-off 2 pilot pressure increase p = 25 bar Electrical control EP EP with proportional solenoid EP G EPG emote pressure cut-off ) The constant power control with remote pressure cut-off LG is also available with hydr. or electrical stroke limiter (e.g. LGH). = Preferred program 2/20 rueninghaus Hydromatik

3 E 92202/07.95 Variable displacement pump 7VO 7V O / 6 Z 0 xial piston unit Mode of operation izes Control and adjustment devices eries 6 Index Direction of rotation viewed on shaft end clockwise counter-clockwise L eals N - nitril caoutchouc / shaft seal FPM FPM - flour caoutchouc haft end splined DIN 5480 Mounting flange IO 4-hole ervice line connections Pressure port E at rear (metric mounting threads) uction port E at rear (metric mounting threads) N V Z 0 When ordering with pressure cut-off/pressure control please state the setting values in clear text. The minimum and maximum displacement is set to limiting values and = 0. If other setting values are desired please state in clear text. etting screws are factory fitted with protective tamper proof caps to prevent subsequent resetting. = available Preferred types, when ordering please state type and ident-number Type Ident-Number Type Ident-Number 7VO55LH/6-NZ VO55LD/6-NZ VO55D/6-NZ VO55EP/6-NZ VO80LH/6-NZ VO80LD/6-NZ VO80D/6-NZ VO80EP/6-NZ VO07LH/6-NZ VO07LD/6-NZ VO07D/6-NZ VO07EP/6-NZ VO60LH/6-NZ VO60LD/6-NZ VO60D/6-NZ VO60EP/6-NZ rueninghaus Hydromatik /20

4 E 92202/07.95 Variable displacement pump 7VO Technical Data Hydraulic fluid We request that before starting a project detailed information about the choise of hydraulic fluids and application conditions are taken from our catalogue sheets E (mineral oil), E 9022 (environmentally acceptable hydraulic fluids) and E 9022 (fire resistant fluids, HF). When using HF fluids or environmentally acceptable hydraulic fluids respectively possible limitations for the technical data have been taken into consideration. If necessary please contact our technical department (please indicate type of the hydraulic fluid used in your application when ordering). Operating viscosity range We recommend that the operating viscosity (at operating temperature), for both efficiency and life of the unit, be chosen within the optimum range of: ν opt = opt. operating viscosity mm 2 /s referred to tank temperature at open circuit. Viscosity limits The limiting values for viscosity are as follows: ν min = 5 mm 2 /s, short term at a max. permissible temp. of t max = 5 C. Please note that the max. fluid temperature of 5 C is also not exceeded in certain areas (for instance bearing area). ν max = 600 mm 2 /s, short term on cold start, t min = -40 C. t temperatures of -25 C up to -40 C special measures may be required for certain installation positions. Please contact us for further information. election diagram Viscosity ν in mm 2 /s VG VG 2 VG 68 VG 46 VG Temperature t in C t min = -40 C Fluid temperature range t max = +5 C Notes on the selection of the hydraulic fluid In order to select the correct fluid, it is necessary to know the operating temperature in the tank (open circuit) in relation to the ambient temperature. The hydraulic fluid should be selected so that within the operating temperature range, the operating viscosity lies within the optimum range (ν opt ) (see shaded section of the selection diagram). We recommend that the higher viscosity grade is selected in each case. 6 6 ν opt. Example: t an ambient temperature of, the operating temperature in the tank is 60 C. In the optimum viscosity range ν opt (shaded area), this corresponds to viscosity grades VG 46 or VG 68, VG 68 should be selected. Important: The leakage fluid temperature is influenced by pressure and speed and is typically higher than the tank temperature. However, maximum temperature at any point in the system must be less than 5 C. If the above conditions cannot be met due to extreme operating conditions, or with a high ambient temperature, we recommend that port be used for bearing flushing. Flushing flow ize q V p L/min Temperature of flushing fluid tank temperature Filtration of fluid The finer the filtration the better the achieved purity grade of the pressure fluid and the longer the life of the axial piston unit. To ensure the functioning of the axial piston unit a minimum purity grade of: 9 to N 68 6 to E 8/5 to IO/DI 4406 is necessary. t very high temperatures of the hydraulic fluid (90 C to max. 5 C) at least cleanless class 8 to N 68 5 to E 7/4 to IO/DI 4406 is necessary. If above mentioned grades cannot be maintained please consult us. Direction of flow Clockwise rotation to Counter- to Installation position Optional. The pump housing must be filled with fluid prior to commissioning, and must remain full whenever it is operating. For pump installation positions above the tank special measures are necessary. For extensive information on installation position, please consult our data sheet E before completing your design work. Operating pressure range inlet side bsolute pressure at port (suction inlet) p abs min 0,8 bar Max. pressure p abs max is dependent upon shaft speed (see page 5). Operating pressure range outlet side Max. pressure at ports or Drive shaft Nominal pressure p n Peak pressure p max no radial loading 50 bar 400 bar (coupling) with radial loading 5 bar ) 400 bar (pinion or belt drive) (pressure data to DIN 242) ) wtih smallest permissible pinion or pulley diameter (see page 5). 4/20 rueninghaus Hydromatik

5 E 92202/07.95 Variable displacement pump 7VO Technical Data Case drain fluid The leakage oil chamber is connected to the suction chamber. case drain line is therefore not necessary (both ports are plugged). Case drain pressure haft seal ring FPM (fluor-caoutchouc) The lower the speed and the case drain pressure the higher the life expectation of the shaft seal ring. The values shown in the diagram are permissible limiting values at intermittend pressurisation of the drive shaft seal ring and shall not be exceeded. In case of excess of the limit values or at stationary pressure loads in the range of the max. admissible leakage pressure a reduction of the life experience of the seal ring will result. For a short period (t < 5 min.) pressure loads up to 5 bar independent from rotational speeds are permissible respectively at lower speeds up to 6 bar. pecial operation conditions may require limitations of these values. perm. pressure p abs. max. in bar size 55 size 80 size 07 size speed n in rpm Note: Maximum permissible speeds (speed limit) are given in the table on page 6. Maximum permissible casing pressure p abs. max 6 bar. The pressure in the housing must be the same as or greater than the external pressure on the shaft seal. Pump drive adial and axial loading on the drive shaft The values shown are maximum values and are not permitted for continuous operation. ize a mm 7, ,5 25 F q max N F q /bar N/bar 2,2 29, 4,0 45,2 ± F ax max N ± F ax zul. /bar N/bar 7,5 9,6, 5, Code explanation F q a = distance of F q from shaft shoulder F q max = max. occurring radial force a F q /bar = radial force / bar working pressure at gear drive (DIN 867) with smallest PCD of pinion D min and (D min = 2,5 x dia. of drive shaft) = preload required / bar working pressure (radial force) to transmit torque at V-belt drive (DIN 775) with smallest pulley diameter D K min and (D K min = 5 x dia. of drive shaft) ±F ax max = max. permissible axial force when stationary or when axial piston unit is running at zero pressure ±F ax zul. /bar = permissible axial bar working pressure The direction of the max. permissible axial force must be noted: F ax max = increases bearing life + F ax max = reduces bearing life (avoid if possible) F ax + Optimal force direction of F q y means of appopriate force directions of F q the bearing load caused by inside rotary group forces can be reduced. n optimal life expectation of the bearing can be reached. ϕ opt = 45 Gear drive ϕ opt = 45 ϕ opt = 70 V-belt drive ϕ opt = 70 pressure at port counter- pressure at port pressure at port rueninghaus Hydromatik 5/20

6 E 92202/07.95 Variable displacement pump 7VO Table of values (theoretical values, without considering mech-hyd. and volumetric efficiency; values rounded) ize cm 54, cm Max. speed ) at n max rpm at V g < (see diagram) n max 2 rpm Max. perm. speed (speed limit) with increased inlet pressure p abs at suction n max zul. rpm inlet (see diagram) Max. perm flow 2 ) at n max ( ) q V max L/min Max. power ( p = 50 bar) at q V max P max kw Torque constants at T k Nm/bar 0,87,27,70 2,55 Perm. torque at at continuous operation Tn ( p = 50 bar) Nm max. perm., short-term ( p = 400 bar) Tmax Nm Moment of inertia about the drive axis J kgm 2 0,0042 0,0080 0,027 0,025 Weight (approx.) m kg ) The values shown are valid for an absolute pressure (p abs ) of bar at the suction inlet and when operated on mineral oil. y increasing the inlet pressure (p abs > bar) the speed may be increased to the max. permissible speed (speed limit), see diagram. 2) % flow losses included. Calculation of ize V g n η v Flow q V = in L/min 000 V g p,59 V g p Drive torque T = = in Nm 20 π η mh 00 η mh 2 π T n T n q V p Drive power P = = = in kw η t V g = geom. displacement per rev. in cm T = torque in Nm p = differential pressure in bar n = speed in rpm η v = volumetric efficiency η mh = mech-hyd. efficiency η t = overall efficiency (η t = η v η mh ) Calculation of inlet pressure p abs at suction inlet or of the reduction in pump displacement for an increase in speed n n max peed,5,4,,2,,0 0,9 0,8 0,6 0,7 0,8 0,9,0 V g 2, 2,0,9,8,7,6,5,4,,2,,0 0,9 0,8 Inlet pressure p abs in bar Example: Given: ize 80 Drive speed 2560 rpm equired: equired pressure p abs at suction inlet olution: peed ratio n 2560 = =,4 n max 2240 This gives an inlet pressure p abs =, bar at max. swivel angle ( ). If, for example, free inlet flow can only be obtained with p abs = bar, then pump displacement must be reduced to 0,88 Note: max. perm. speed n max zul. (speed limit). min. and max. perm. pressure at port. perm. values of the shaft seal ring. 6/20 rueninghaus Hydromatik

7 E 92202/07.95 Variable displacement pump 7VO L Constant Power Control The constant power control controls the output volume of the pump in relation to the working pressure so that, at a constant drive speed, the preset drive power is not exceeded. p V g = constant p = working pressure, V g = pump displacement Working pressure p in bar bar 0 0 0,2 0,4 0,6 0,8,0 Optimum power usage is obtained by accurately following the power hyberbola. Working pressure applies a force on a piston within the control piston on to a rocker arm. n externally adjustable spring force is applied to the other side of the rocker arm to determine the power setting. hould the working pressure exceed the set spring force, the pilot control valve is operated via the rocker arm, allowing the pump to swivel towards zero output. This in turn reduces the effective moment on the arm of the rocker, thus allowing the working pressure to rise in the same ratio by which the output flow is reduced (p V g = constant). In unoperated (zero pressure) condition, the pump is swivelled to its starting position ( ) by means of a control spring. The start of control is adjustable from 50 bar to 220 bar. The output power (performance curve) is influenced by the efficiency of the pump. When ordering, state in clear text: Input power P in HP or kw Input speed n in rpm Max. output flow q V max in L/min fter all technical details have been clarified, a power diagram can be produced by computer. Circuit diagram Constant power control L 220 bar etting range tart of control Variation: emote pressure cut-off (G) sequence valve with subplate takes over the function of the pressure cut-off. The valve is mounted separate from the pump, and the simple piping length should not exceed 5 m. High pressure is supplied from the pump to the valve via port, and the valve control oil is fed back to the pump via port, causing the pump to swivel back towards. Port T of the sequence valve and, the pilot drain from the pump must be connected back to tank (cooler). etting range from 50 bar to 5 bar ny pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. The sequence valve and subplate must be ordered separately. equence valve: DZ5DP2-/5 MO2 (Id.-Nr ) ubplate: G 5/ (Id.-Nr. 5 8) When ordering, state in clear text: etting of the pressure cut-off Working pressure p in bar etting range 5 50 max min Circuit diagram Constant power control with remote pressure cut-off, LG / P / T nit dimensions L / LG see pages rueninghaus Hydromatik 7/20

8 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. L D Constant Power Control... Variation: Integral pressure cut-off (fixed setting), (D) The pressure cut-off is in effect a constant pressure control which swivels the pump back to when the preset working pressure is reached. This function overrides the constant power control, i.e. the constant power control is effective below the preset working pressure. The valve is integrated into the control housing and is set in the factory to a fixed pressure, within the range 200 bar to max. 50 bar. Note, however, that the max. permissible setting between start of control and pressure cut-off is start of control x 5. Example: tart of control (constant power control): 50 bar Max. setting of pressure cut-off: 50 bar 5 = 250 bar When is plugged and T tank 50 C the maximum duration of operation is 2 min. ny pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. nit dimensions LD general dimensions and connections see pages counter- Pressure cut-off (D) When ordering, state in clear text: etting of the pressure cut-off Working pressure p in bar etting range max min 2 ize Constant power control (L) Circuit diagram Constant power control with integral pressure cut-off (fixed setting) LD / 8/20 rueninghaus Hydromatik

9 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. L. Constant Power Control... Variation: Electrical stroke limiter () The electrical stroke limiter allows the maximum displacement to be infinitely varied or limited as required. The displacement is set by means of the pilot current generated by the proportional solenoid. 24V DC supply and a current of between 200 and 600 m are required for the control of the proportional solenoid. The electrical stroke limiter is overriden by the constant power control, i.e. below the power curve (power hyperbola), displacement is adjusted in relation to the pilot current. If the set flow or the working pressure is such that the power curve is exceeded, the constant power control overrides the stroke limiter and reduces displacement until the power hyperbola is restored. s the pilot current increases, the pump swivels to a lower displacement. In unoperated (zero pressure) condition, the pump is swivelled to its starting position ( ) by means of a control spring. tart of control (at ) 200 m End of control (at ) 600 m Control from to nit dimensions LD general dimensions and connections see pages ( ) counter- 5 T Pilot current I in m Pressure cut-off (D) 0 0,2 0,4 0,6 0,8,0 Circuit diagram: Constant power control with pressure cut-off and electrical stroke limiter, LD / Constant power control (L) Connections emote control pressure M4x,5 (plugged) ize rueninghaus Hydromatik 9/20

10 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. L.H. Constant Power Control... Variation: Hydraulic stroke limiter (H...) The hydraulic stroke limiter allows the maximum displacement to be infinitely varied or limited as required. Control range to. The displacement is set by means of the pilot pressure applied at port. The hydraulic stroke limiter is overriden by the constant power control, i.e. below the power curve (power hyperbola), displacement is adjusted in relation to pilot pressure. If the set flow or the working pressure is such that the power curve is exceeded, the constant power control overrides the stroke limiter and reduces displacement until the power hyperbola is restored. H/H5 Function: to (negative control) s pilot pressure increases the pump swivels towards lower displacement. In unoperated (zero pressure) condition, the pump is swivelled to its starting position ( ) by means of a control spring. tart of control, (at ), adjustable from 4 bar to 5 bar. When ordering, please state required start of control in clear text. H pilot pressure increase ( ) p = 25 bar 40 Circuit diagram: Constant power control with pressure cut-off and hydraulic stroke limiter (negative control), LDH, LDH5 / 2 ( ) ( ) nit dimensions LDH, LDH5 general dimensions and connections see pages Pilot pressure p t in bar etting range ,2 0,4 0,6 0,8,0 H5 pilot pressure increase ( ) p = 0 bar 40 7 counter Pressure cut-off (D) Pilot pressure p t in bar etting range ,2 0,4 0,6 0,8,0 pressure of 40 bar is necessary to operate the control. The required control oil is taken from the high pressure circuit. If necessary, a boost pressure of 40 bar should be applied at port. If the H-function is used for two-point switching control only ( - ), pilot pressure at port must not exceed 40 bar. Constant power Connections control(l) emote control pressure M4x,5 (plugged) Pilot pressure M4x,5 ize /20 rueninghaus Hydromatik

11 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. H2/H6 Function: to (positive control) s pilot pressure increases the pump swivels towards higher displacement. In unoperated (zero pressure) condition, the pump is swivelled to its starting position ( ) by means of a control spring. If the working pressures is 40 bar, the pump swivels from to (pilot pressure start of control). tart of control, (at ), adjustable from 4 bar to 5 bar When ordering, please state required start of control in clear text. H2 pilot pressure increase ( ) p = 25 bar Circuit diagram: Constant power control with pressure cut-off and hydraulic stroke limiter (positive control), LDH2, LDH6 / 40 Pilot pressure p t in bar etting range ( ) ( ) nit dimensions LDH2, LDH6 general dimensions and connections see pages ,2 0,4 0,6 0,8,0 H6 pilot pressure increase ( ) p = 0 bar Pilot pressure p t in bar etting range counter- 7 Pressure cut-off (D)) 0 0,2 0,4 0,6 0,8,0 pressure of 40 bar is necessary to operate the control. The required control oil is taken from the high pressure circuit. If necessary, a boost pressure of 40 bar should be applied at port. If the H-function is used for two-point switching control only ( - ), pilot pressure at port must not exceed 40 bar. T Connections see LDH/H5 page 0 ize rueninghaus Hydromatik /20

12 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. D Constant Pressure Control The constant pressure control maintains the pressure in a hydraulic system constant whithin its control range in spite of changing pump flow requirements. The variable pump supplies only the volume of fluid required by the consumer. hould working pressure exceed the set pressure, the pump is automatically swivelled back to a smaller angle and the deviation in control corrected. In unoperated (zero pressure) condition, the pump is swivelled to its starting position ( ) by means of a control spring. etting range from 50 bar to 50 bar When ordering, state in clear text: etting of the constant pressure control ny pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. Zero stroke operation The standard pump unit is designed for intermittent constant pressure operation. hort-term operation at zero stroke (< 0 min.; 50 % duty) is permissible up to a working pressure p max = 5 bar at a tank temperature of 50 C. For long-term periods of zero stroke operation, port should be used for bearing flushing. Connection for flushing fluid Working pressure p in bar etting range max min max. 0 bar Flushing flow ize q V p in L/min Temperature of flushing fluid tank temperature nit dimensions D general dimensions and connections see pages Circuit diagram: Constant pressure control D (integral valve), fixed setting / counter- const. pressure control (D) ize 55 92, /20 rueninghaus Hydromatik

13 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. Variation: emote constant pressure control (G) sequence valve with subplate takes over the pressure control function. The valve is mounted separate from the pump, and the simple piping length should not exceed 5 m. High pressure is supplied from the pump to the valve via port, and the valve control oil is fed back to the pump via port, causing the pump to swivel back towards. Port T of the sequence valve and, the pilot drain from the pump must be connected back to tank (cooler). nit dimensions DG see control device D, general dimensions and connections see pages Ports and are open etting range from 50 bar to 5 bar. ny pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. The sequence valve and subplate must be ordered separately. equence valve: DZ5DP2-/5MO2 (Id.-Nr ) ubplate: G 5/ (Id.-Nr. 5 8) When ordering, state in clear text: etting of the constant pressure control Working pressure p in bar etting range 5 max max. 0 bar 50 min Circuit diagram: emote constant pressure control DG / P T rueninghaus Hydromatik /20

14 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. HD Hydraulic Control, Pilot Pressure elated The pilot pressure related hydraulic control allows stepless setting of the pump displacement in relation to pilot pressure. Control is proportional to the pilot pressure applied to port. tart position in zero pressure condition at. Control from to. HD Pilot pressure increase ( ) p = 0 bar tart of control (at ), adjustable from 4 5 bar When ordering, please state required start of control in clear text Circuit diagram: Hydraulic control, pilot pressure related, HD, HD2 / Pilot pressure p t in bar etting range nit dimensions HD, HD2 general dimensions and connections see pages ,2 0,4 0,6 0,8,0 HD2 Pilot pressure increase ( ) p = 25bar tart of control (at ), adjustable from 4-5 bar When ordering, please state required start of control in clear text. Pilot pressure p t in bar etting range ,2 0,4 0,6 0,8,0 pressure of 40 bar is necessary to operate the control. The required control oil is taken from the high pressure circuit. If the working pressure equals or exceeds 40 bar and minimum displacement ( ) is greater than zero, then no external control pressure is required. In other cases, an external control pressure with min. 40 bar should be connected at port. If the HD control is only required as a 2-point switching control ( - ), the pilot pressure at port must not exceed 40 bar. 7 6 ( ) 5 ( ) counter- 4 2 Connections External control pressure M4x,5 (plugged) Pilot pressure M4x,5 ize /20 rueninghaus Hydromatik

15 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. Variation: emote pressure cut-off (G) sequence valve with subplate takes over the function of the pressure cut-off. The valve is mounted separate from the pump, and the simple piping length should not exceed 5 m. High pressure is supplied from the pump to the valve via port. The control oil of the pump is directed to the valve via the port and led into the tank at port located on the subplate of the sequence valve. In this case the pump is regulated to in case of access of the set-point pressure value. Note: Port of the sequence valve must be connected back to tank (cooler). nit dimensions HDG/HD2G see control device HD/HD2, general dimensions and connections see pages Ports and are open etting range from 50 bar to 5 bar. ny pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. The sequence valve and subplate must be ordered separately. equence valve: DZ5DP2-/5O20 (Id.-Nr ) ubplate: G 5/ (Id.-Nr. 5 8) When ordering, state in clear text: etting of the pressure cut-off Working pressure p in bar etting range 5 max max. 0 bar 50 min Circuit diagram: Hydraulic control, pilot pressure related with remote pressure cut-off, HDG, HD2G P / rueninghaus Hydromatik 5/20

16 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. EP Electrical Control with Proportional olenoid The electrical control with proportional solenoid allows stepless and programmable setting of the pump displacement. Control is proportional to solenoid force (current strength). The control force at the control piston is generated by a proportional solenoid. For control of the proportional solenoid, a 24 V DC supply with current levels between 200 and 600 m is required. tart of control (at ) 200 m End of control (at ) 600 m Insulation class IP 54 tart position in zero pressure condition at. Control from to pressure of 40 bar is necessary to operate the control. The required control oil is taken from the high pressure circuit. If the working pressure equals or exceeds 40 bar and minimum displacement ( ) is greater than zero, then no external control pressure is required. In other cases, an external control pressure with min. 40 bar should be connected at port. nit dimensions EP general dimensions and connections see pages ( ) counter- Pilot current I in m ,2 0,4 0,6 0,8,0 uitable control for the proportional solenoid are proportional amplifier PV (catalogue sheet E 9502) and chopper amplifier CV (catalogue sheet E 95029). y using an electronic control card control of swivel time is also possible. Note: Pumps with EP control may only be mounted within an oil tank when using mineral hydraulic oils and with oil temperatures in the tank of max. 80 C. Circuit diagram: Electrical control with proportional solenoid, EP / 5 Connections External control pressure M4x,5 (plugged) ize Variation: emote pressure cut-off (G) Description see HDG/HD2G, page 5 Circuit diagram EPG / P 6/20 rueninghaus Hydromatik

17 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. nit Dimensions, ize 55 Constant power control L Variation: Constant power control with remote pressure cut-off LG (ports,, open) ø ø T ø ø.5 24 ( ; ) 242 ( ) counter- Constant power control (L) ø M2; 20 deep M2; 20 deep haft end Z plined shaft W 0x2x0x4x9g DIN 5480 M 2 28,6 5 8 ø24,6 Connections, ervice line ports E /4" (metric mounting threads) 420 bar (6000 psi) High pressure series uction port E 2" (metric mounting threads) 20 bar (000 psi) tandard series earing flushing port M8x,5 (plugged) leed port M8x,5 (plugged) High pressure port M4x,5 (plugged) Pilot oil drain M2x,5 (plugged) Port for override M4x,5 (plugged) rueninghaus Hydromatik 7/20

18 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. nit Dimensions, ize 80 Constant power control L Variation: Constant power control with remote pressure cut-off LG (ports,, open) ø ø ø80 45 ø ( ) 270 ( ; ) counter- Constant power control (L) ø M2; 7 deep M2; 7 deep haft end Z plined shaft W 5x2x0x6x9g DIN M 2, ø29,6 Connections, ervice line ports E " (metric mounting threads) 420 bar (6000 psi) High pressure series uction port E 2 /2" (metric mounting threads) 70 bar (2500 psi) tandard series earing flushing port M8x,5 (plugged) leed port M8x,5 (plugged) High pressure port M6x,5 (plugged) Pilot oil drain M2x,5 (plugged) Port for override M6x,5 (plugged) 8/20 rueninghaus Hydromatik

19 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. nit Dimensions, ize 07 Constant power control L Variation: Constant power control with remote pressure cut-off LG (ports,, open) ( ) ø60 ø ø200 ø ( ) 289 ( ) counter- Constant power control (L) T 57.2 ø M2; 7 deep M2; 7 deep haft end Z plined shaft W 40x2x0x8x9g DIN 5480 M 2 282, ø4,6 Connections, ervice line ports E " (metric mounting threads) 420 bar (6000 psi) High pressure series uction port E 2 /2" (metric mounting threads) 70 bar (2500 psi) tandard series earing flushing port M8x,5 (plugged) leed port M8x,5 (plugged) High pressure port M6x,5 (plugged) Pilot oil drain M2x,5 (plugged) Port for override M6x,5 (plugged) rueninghaus Hydromatik 9/20

20 E 92202/07.95 Variable displacement pump 7VO ll rights reserved. nit Dimensions, ize 60 Constant power control L Variation: Constant power control with remote pressure cut-off LG (ports,, open) ( ) ø80 ø ø224 ø ( ) ( ) Constant power control (L) counter ø M4; 9 deep M6; 24 deep haft end Z plined shaft W 45x2x0x2x9g DIN 5480 M 6 62, ø9,6 Connections, ervice line ports E /4" (metric mounting threads) 420 bar (6000 psi) High pressure series uction port E " (metric mounting threads) 40 bar (2000 psi) tandard series earing flushing port M8x,5 (plugged) leed port M8x,5 (plugged) High pressure port M6x,5 (plugged) Pilot oil drain M2x,5 (plugged) Port for override M6x,5 (plugged) rueninghaus Hydromatik GmbH, Plant Elchingen, Glockeraustraße 2, D Elchingen 2, Tel. (0708) 820, Telex 7258, Fax (0708) /20 rueninghaus Hydromatik