Axial Piston Variable Pump AA11VO

Transcription

1 Electric rives and Controls Hydraulics Linear Motion and ssembly Technologies Pneumatics ervice xial Piston Variable Pump 11VO / /68 eplaces: ata sheet eries 1 ize N40 to 260 Nominal pressure 5100 psi (350 bar) Maximum pressure 5800 psi (400 bar) Open circuit Contents Ordering code for standard program 2 Technical data 5 L Power control 10 Pressure control 21 H Hydraulic control, pilot-pressure related 25 EP Electric control with proportional solenoid 27 imensions size imensions size imensions size imensions size imensions size 130/ imensions size imensions size Through drive dimensions 58 Overview of attachments for 11V(L)O 61 Combination pumps 11VO + 11VO 62 wivel angle indicator 63 Connector for solenoids 64 Installation notes 65 eneral notes 68 Features Variable axial piston pump of swashplate design for hydrostatic drives in open circuit hydraulic system. esigned primarily for use in mobile applications. The pump operates under self-priming conditions, with tank pressurization, or with an optional built-in charge pump (impeller). comprehensive range of control options is available matching any application requirement. Power control option is externally adjustable, even when the pump is running. The through drive is suitable for adding gear pumps and axial piston pumps up to the same size, i.e. 100% through drive. The output flow is proportional to the drive speed and infinitely variable between q V max and q V min = 0.

2 2/68 Bosch exroth Corp. 11VO eries /10.09 Ordering code for standard program 11V O / 1 N xial piston unit 01 washplate design, variable, nominal pressure 5100 psi (350 bar), maximum pressure 5800 psi (400 bar) 11V Charge pump (impeller) without charge pump (no code) 02 with charge pump L Operation 03 Pump, open circuit O ize isplacement V g max cm 3 /rev in 3 /rev Control unit Power control L L with override cross sensing negative L C L.C high-pressure related negative L3 L3 pilot-pressure related negative L1 L1 positive L2 L2 electric U = 12 V negative LE1 LE1 U = 24 V negative LE2 LE2 with pressure cut-off L... hydraulic, 2-stage E L. E.. hydraulic, remote controlled L... with load sensing L... with stroke limiter electric, prop. override, 24 V 2 L...2 hydraulic, prop. override 5 L...5 negative Δp=365 psi (25 bar) H1 L...H1 characteristic Δp=145 psi (10 bar) H5 L...H5 Δp=365 psi (25 bar) H2 L...H2 positive characteristic Δp=145 psi (10 bar) H6 L...H6 U = 12 V U1 L...U1 U = 24 V U2 L...U2 Pressure control Hydraulic control pilot-pressure related with load sensing remote controlled for parallel operation L L Δp = 145 psi (10 bar) H1 H1 (positive characteristic) Δp = 365 psi (25 bar) H2 H2 with pressure cut-off H. with pressure cut-off, remote controlled H. Electric control U = 12 V EP1 EP1 with proportional solenoid (positive characteristic) U = 24 V EP2 EP2 with pressure cut-off EP. with pressure cut-off, remote control EP. In case of controls with several additional functions, observe the order of the columns, only one option per column is possible (e.g. LCH2). The following combinations are not available for the power control: L2, L5, L..., L...2, L...5, L...EC and the combination L... in conjunction with the stroke limiters H1, H2, H5, H6, U1 and U2. = available = on request = not available

3 92500-/ VO eries 1 Bosch exroth Corp. 3/68 Ordering code for standard program 11V O / 1 N eries Index ize 40 to ize 145 to irection of rotation Viewed from drive shaft clockwise 08 counter-clockwise L eals 09 NB (nitrile-caoutchouc), shaft seal ring in FKM (fluor-caoutchouc) N rive shaft (see page 8 for permissible input and through drive torques) Parallel keyed shaft IN 6885 P 10 plined shaft NI B92.1a 1976 for single pump for combination pump 1) 1) 1) T Mounting flange E J744 2-hole C 11 E J744 4-hole E J617 2) (E 3) ervice line ports Pressure and suction port E, at side, opposite side (with UNC fastening threads) 13 Through drive (see page 58 for attachments) Flange E J744 3) Coupler for splined shaft N () 5/8in 96/32P () K01 3/4in 116/32P (-B) K (B) 7/8in 136/32P (B) K02 1 in 156/32P (B-B) K (C) 4) 1 1/4in 142/24P (C) K07 1 1/2in 172/24P (C-C) K () 1 1/4in 142/24P (C) K86 1 3/4in 13T 8/16P () K (E) 1 3/4in 13T 8/16P () K72 1) -shaft suitable for combination pump! 2) To fit the flywheel case of the combustion engine 3) 2 2-hole; 4 4-hole 4) ize 190 and 260 with hole flange = available = on request = not available

4 4/68 Bosch exroth Corp. 11VO eries /10.09 Ordering code for standard program 11V O / 1 N wivel angle indicator (page 63) without swivel angle indicator (no symbol) 14 with optical swivel angle indicator V with electric swivel angle sensor Connector for solenoids (page 64) EUTCH connector molded, 2-pin without suppressor diode P tandard / special version tandard version without symbol combined with attachment part or attachment pump -K 16 pecial version - combined with attachment part or attachment pump -K = available = on request = not available

5 92500-/ VO eries 1 Bosch exroth Corp. 5/68 Technical data Hydraulic fluid election diagram Before starting project planning, please refer to our data sheets E (mineral oil), E (environmentally acceptable hydraulic fluids) and E (HF hydraulic fluids) for detailed information regarding the choice of hydraulic fluid and operating conditions. The variable pump 11VO is not suitable for operating with HF, HFB and HFC. If HF or environmentally acceptable hydraulic fluids are being used, the limitations regarding technical data and seals mentioned in E and E must be observed. When ordering, indicate the hydraulic fluid that is to be used. viscosity U (mm2/s) (1600) (1000) (600) (400) (200) (100) (60) (40) (20) (10) (-40) (-20) (0) (20) (40) (60) (80) (100) V 22 V 32 V 68 V 46 V (1600) 170 (36) opt. 80 (16) Operating viscosity range For optimum efficiency and service life, select an operating viscosity (at operating temperature) within the optimum range of ν opt = opt. operating viscosity 80 to 170 U (16 to 36 mm 2 /s) depending on the tank temperature (open circuit). Limits of viscosity range The limiting values for viscosity are as follows: ν min = 42 U (5 mm 2 /s) hort-term (t < 3 min) t max. perm. temperature of t max = 240 F (+115 C). ν max = 7400 U (1600 mm 2 /s) hort-term (t < 3 min) t cold start (p 435 psi (30 bar), n 1000 rpm, t min = -40 F (-40 C)). Only for starting up without load. Optimum operating viscosity must be reached within approx. 15 minutes. Note that the maximum hydraulic fluid temperature of 240 F (115 C) must not be exceeded locally either (e.g. in the bearing area). The temperature in the bearing area is depending on pressure and speed up to 9 F (5 K) higher than the average case drain temperature. pecial measures are necessary in the temperature range from -40 F (-40 C) and -13 F (-25 C) (cold start phase), please contact us. For detailed information about use at low temperatures, see E B. 40 (5) 42 (5) (-40) (-25) (-10) (0) (10) (30) (50) (70) (90) (115) ( C) t min = -40 F (-40 C) fluid temperature range t in F ( C) F t max = +240 F (+115 C) etails regarding the choice of hydraulic fluid The correct choice of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in an open circuit the tank temperature. The hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range (ν opt. ) see the shaded area of the selection diagram. We recommended that the higher viscosity class be selected in each case. Example: t an ambient temperature of C an operating temperature of 140 F (60 C) is set. In the optimum operating viscosity range (ν opt ; shaded area) this corresponds to the viscosity classes V 46 and V 68; to be selected: V 68. Note The case drain temperature, which is affected by pressure and speed, is always higher than the tank temperature. t no point in the system may the temperature be higher than 240 F (115 C). If the above conditions cannot be maintained due to extreme operating parameters, please contact us. Filtration The finer the filtration, the higher the cleanliness level of the hydraulic fluid and the longer the service life of the axial piston unit. To ensure functional reliability of the axial piston unit, the hydraulic fluid must have a claenliness level of at least 20/18/15 according to IO t very high hydraulic fluid temperatures (195 F (90 C) to maximum 240 F (115 C), at least cleanliness level 19/17/14 according to IO 4406 is required. If the above classes cannot be observed, please contact us.

6 6/68 Bosch exroth Corp. 11VO eries /10.09 Technical data Operating pressure range Inlet bsolute pressure at port (suction port) Version without charge pump p abs min 12 psi (0.8 bar) p abs max 435 psi (30 bar) If the pressure is > 75 psi (5 bar), please ask. Version with charge pump p abs min 9 psi (0.6 bar) p abs max 30 psi (2 bar) Maximum permissible speed (speed limit) Permissible speed by increasing the inlet pressure p abs at the suction port or at V g V g max peed nmax /nmax p abs = 15 psi (1 bar) p abs = 22.5 psi (1.5 bar) isplacement V g / V g max Outlet Pressure at port or B Nominal pressure p N 5100 psi (350 bar) Maximum pressure p max 5800 psi (400 bar) Nominal pressure: Maximum design pressure at which fatigue strength is ensured. Maximum pressure: Maximum operating pressure which is permissible for short-term (t < 1s). Minimum operating pressure minimum operating pressure p B min is required in the pump service line depending on the speed, the swivel angle and the displacement (see diagram). Case drain pressure The case drain pressure at the ports and may be a maximum of 17.5 psi (1.2 bar) higher than the inlet pressure at the port but not higher than p L abs. max 30 psi (2 bar). n unrestricted, full size case drain line directly to tank is required. Temperature range of the shaft seal ring The FKM shaft seal ring is permissible for case drain temperatures of -13 F to 240 F (-25 C to +115 C). Note For applications below-13 F (-25 C), an NB shaft seal ring is necessary (permissible temperature range: -40 F to 194 F (-40 C to +90 C). tate NB shaft seal ring in clear text in the order. Flushing the case If a variable pump with control unit EP, H, or stroke limiter (H., U., ) is operated over a long period (t > 10 min) with flow zero or operating pressure < 220 psi (15 bar), flushing of the case via ports " ", " " or "" is necessary. ize q V flush gpm (l/min) Flushing the case is unnecessary in versions with charge pump (11VLO), since a part of the charge flow is directed to the case. Charge pump (impeller) The charge pump is a circulating pump with which the 11VLO (size 130 to 260) is filled and therefore can be operated at higher speeds. This also simplifies cold starting at low temperatures and high viscosity of the hydraulic fluid. Tank charging is therefore unnecessary in most cases. tank pressure of a maximum 30 psi (2 bar) is permissible with charge pump. M p B (psi (bar)) 290 (20) 260 (18) 230 (16) 200 (14) 175 (12) 145 (10) 115 (8) 90 (6) n (with charge pump) n (without charge pump) V g max Vg max Vg min

7 92500-/ VO eries 1 Bosch exroth Corp. 7/68 Technical data Table of values (theoretical values, without efficiency and tolerances; values rounded) ize 11VO isplacement In 3 /rev V g max cm V g min cm peed maximum at V 1) g max n max rpm maximum at V g V 2) g max n max1 rpm Flow gpm q at n max and V v max g max l/min Power at q v max and Δp = 350 bar Torque at V g max and Δp = 350 bar hp P max kw lb-ft T max Nm otary stiffness P shaft lb-ft/rad Nm/rad shaft lb-ft/rad Nm/rad T shaft lb-ft/rad Nm/rad Moment of inertia for rotary group J TW lbs-ft kgm ngular acceleration, maximum 3) α rad/s Filling capacity gal V L Mass (approx.) lbs m kg ) The values apply at absolute pressure (pabs) 15 psi (1 bar) at the suction port and mineral hydraulic fluid. 2) The values apply at Vg V g max or in case of an increase in the inlet pressure p abs at the suction port (see diagram page 6) 3) The area of validity is situated between 0 and the maximum permissible speed. It applies for external stimuli (e.g. engine 2 to 8 times rotary frequency, cardan shaft twice the rotary frequency). The limit value applies for a single pump only. The loading on the connection parts has to be considered. Caution Exceeding the permissible limit values could cause a loss of function, reduced service life or the destruction of the axial piston unit. The permissible values can be determined by calculation.

8 8/68 Bosch exroth Corp. 11VO eries /10.09 Technical data Table of values (theoretical values, without efficiency and tolerances; values rounded) ize 11VLO (with charge pump) isplacement In 3 /rev V g max cm V g min cm peed maximum at V 1) g max n max rpm maximum at V g V 2) g max n max1 rpm Flow gpm q at n max and V v max g max l/min Power at q v max and Δp = 350 bar Torque at V g max and Δp = 350 bar P max hp kw T max lb-ft Nm otary stiffness P shaft lb-ft/rad Nm/rad shaft lb-ft/rad Nm/rad T shaft lb-ft/rad Nm/rad Moment of inertia for rotary group J T lbs-ft kgm ngular acceleration, maximum 3) α rad/s Filling capacity Mass (approx.) V m gal L lbs kg ) The values apply at absolute pressure (pabs) of at least 12 psi (0.8 bar) at the suction port and mineral hydraulic fluid. 2) The values apply at Vg V g max or in case of an increase in the inlet pressure p abs at the suction port (see diagram page 6) 3) The area of validity is situated between 0 and the maximum permissible speed. It applies for external stimuli (e.g. engine 2 to 8 times rotary frequency, cardan shaft twice the rotary frequency). The limit value applies for a single pump only. The loading on the connection parts has to be considered. Caution Exceeding the permissible limit values could cause a loss of function, reduced service life or the destruction of the axial piston unit. The permissible values can be determined by calculation. etermining the size Flow q v = V g n η v V g n η v [gpm] [l/min] V g Δp V g Δp Torque T = [lb-ft] [Nm] 24 π η mh 20 π η mh ) Power P = 2 π T n q v Δp q v Δp = [hp] = 2 π T n [kw] η t 600 η t ( ( ( ) ) V g = isplacement per revolution [cm 3 ] Δ p = ifferential pressure [bar] n = peed [rpm] η v = Volumetric efficiency η mh = Mechanical-hydraulic efficiency η t = Total efficiency (η t = η v η mh )

9 92500-/ VO eries 1 Bosch exroth Corp. 9/68 Technical data Permissible radial and axial loading on drive shaft The values stated are maximum data and not permissible for continuous operation ize ize adial force, maximum at distance a, b, c (from shaft collar) xial force, maximum F q a, b, c F q max lbf N in a mm lbf F q max N in b mm lbf F q max N in c mm lbf F ax ± F ax max + N Permissible input and through drive torques ize ize Torque (at V g max and Δp = 5100 psi (350 bar 1) )) Input torque, maximum 2) at shaft end P haft key IN 6885 at shaft end NI B92.1a-1976 (E J744) at T shaft end NI B92.1a-1976 (E J744) T max lb-ft Nm T E perm. lb-ft Nm I in I mm ø32 ø35 ø40 ø45 ø50 ø50 ø55 ø60 T E perm. lb-ft Nm in 1 in 1 1/4 in 1 1/4 in 1 3/4 in 1 3/4 in 1 3/4 in 1 3/4 in 1 3/4 in T E perm. lb-ft Nm in 1 1/4 in 1 3/8 in 1 3/8 in 2 in 2 1/4 in lb-ft Through drive torque, maximum 3) T perm. Nm ) Efficiency not considered 2) For drive shafts with no radial force 3) Observe maximum input torque for shaft! Torque distribution T E 1. Pumpe 1st pump 2. 2nd Pumpe pump T

10 10/68 Bosch exroth Corp. 11VO eries /10.09 L Power control The power control regulates the displacement of the pump depending on the operating pressure so that a given drive power is not exceeded at constant drive speed. Circuit diagram L ize 40 to 145 p B = operating pressure p B V g = constant V g = displacement The precise control with a hyperbolic control characteristic, provides an optimum utilization of available power. M The operating pressure acts on a rocker via a measuring piston. n externally adjustable spring force counteracts this, it determines the power setting. Vg max Vg min If the operating pressure exceeds the set spring force, the control valve is actuated by the rocker, the pump swivels back (direction V g min ). The lever length at the rocker is shortened and the operating pressure can increase at the same rate as the displacement decreases without the drive powers being exceeded (p B V g = constant). ize 190 to 260 The hydraulic output power (characteristic L) is influenced by the efficiency of the pump. tate in clear text in the order: M drive power P in kw drive speed n in rpm Vg max Vg min maximum flow qv max in l/min fter clarifying the details a power diagram can be created by our computer. Characteristic L Operating pressure pb [psi (bar)] 4650 (320) etting range tart of control 725 (50) V g min isplacement V g max

11 92500-/ VO eries 1 Bosch exroth Corp. 11/68 L Power control LC Override with cross sensing Cross sensing control is a summation power control system, whereby the total power, of both the 11VO and of a same size 11VO power controlled pump mounted onto the through drive, are kept constant. If a pump is operating at pressures below the start of the control curve setting, then the surplus power not required, in a critical case up to 100 %, becomes available to the other pump. Total power is thus divided between two systems as demand requires. ny power being limited by means of pressure cut-off or other override functions is not taken into account. Half side cross sensing function When using the LC control on the 1st pump (11VO) and a power-controlled pump without cross sensing attached to the through drive, the power required for the 2nd pump is deducted from the setting of the 1st pump. The 2nd pump has priority in the total power setting. The size and start of control of the power control of the 2nd pump must be specified for rating the control of the 1st pump. L3 High-pressure related override The high-pressure related power override is a total power control in which the power control setting is piloted by the load pressure of an attached fixed pump (port ). s a result the 11VO can be set to 100 % of the total drive power. The power setting of the 11VO is reduced proportional to the load-dependent rise in operating pressure of the fixed pump. The fixed pump has priority in the total power setting. The measuring area of the power reduction pilot piston is designed as a function of the size of the fixed pump. Circuit diagram L3 ize 40 to 145 PH M Circuit diagram LC ize 40 to 145 Vg max Vg min p H M ize 190 to 260 P H Vg max Vg min L M Vg max Vg min ize 190 to 260 M Vg max Vg min

12 12/68 Bosch exroth Corp. 11VO eries /10.09 L Power control L1/2 Pilot-pressure related override This power control works by overriding the control setting with an external pilot pressure signal. This pilot pressure acts on the adjustment spring of the power regulator via port. The mechanically adjusted basic setting can be hydraulically adjusted by means of different pilot pressure settings, enabling different power mode settings. If the pilot pressure signal is then adjusted by means of an external power limiting control, the total hydraulic power consumption of all users can be adapted to the available drive power from the engine. The pilot pressure used for power control is generated by an external control element that is not a component part of the 11VO (e.g. see also data sheet E 95310, Electronic Load Limiting Control, LLC). L1 Negative power override Power control with negative override, L1: the force resulting from the pilot pressure is acting against the mechanical adjustment spring of the power control. Increasing the pilot pressure reduces the power setting. L2 Positive power override Power control with positive override, L2: the force resulting from the pilot pressure is additive the mechanical adjustment spring of the power control. n increase in pilot pressure increases the power output. Circuit diagram L1 Circuit diagram L2 ize 40 to 145 ize 40 to 145 M M Vg max Vg min Vg max Vg min ize 190 to 260 ize 190 to 260 M M Vg max Vg min Vg max Vg min

13 92500-/ VO eries 1 Bosch exroth Corp. 13/68 L Power control LE1/2 Electric override (negative) Circuit diagram LE1/2 Contrary to hydraulic power control override, the basic power setting is reduced by an electric pilot current applied to a proportional solenoid. The resulting force is acting against the mechanical power control adjustment spring. The mechanically adjusted basic power setting can be varied by means of different control current settings. ize 40 to 145 M Increase in current = decrease in power If the pilot current signal is adjusted by a load limiting control the power consumption of all actuators will be reduced to match the available power from the diesel engine. Vg max Vg min 12V (LE1) or 24V (LE2) supply is required for the control of the proportion solenoid. Technical data - olenoids ize 190 to 260 LE1 LE2 Voltage 12 V (±20 %) 24 V (±20 %) Control current tart of control 400 m 200 m T1 M End of control 1200 m 600 m Limiting current Vg max Vg min Nominal resistance (at 68 F (20 C)) 5.5 Ω 22.7 Ω ither frequency 100 Hz 100 Hz ctuated time 100 % 100 % Type of protection see connector version, page 60 T Overview of power overrides M Effect of power overrides at rising pressure or current Operating pressure pb [psi (bar)] 725 (50) V g min minimum isplacement p H I p t L2 LC L3 LE1/2 L1 V g max

14 14/68 Bosch exroth Corp. 11VO eries /10.09 L Power control L Power control with pressure cut-off The pressure cut-off corresponds to a pressure control which adjusts the pump displacement back to V g min, when the pressure setting is reached. This function overrides the power control, i.e. below the preset pressure value, the power function is effective. The pressure cut-off function is integrated into the pump control module and is preset to a specified value at the factory. etting range from 725 to 5100 psi (50 to 350 bar) Characteristic L Operating pressure pb [psi (bar)] etting range 5100 (350) 725 (50) max min V g min isplacement V g max LE Power control with pressure cut-off, 2-stage By connecting an external pilot pressure to port, the basic value of the pressure cut-off can be increased by psi ( bar) and a 2nd pressure setting implemented. This value is usually above the primary pressure relief valve setting and therefore disables the pressure cut-off function. The pressure signal at port must be between 290 and 725 psi (20 and 50 bar). Characteristic LE Operating pressure pb [psi (bar)] 5650 (390) 5350 (370) 5100 (350) 4650 (320) V g min Increased pressure cut-off with tolerance range (pressure cut-off deactivated) Primary pressure relief valve Basic value pressure cut-off isplacement V g max Circuit diagram L ize 40 to 145 Circuit diagram LE ize 40 to 145 M M Vg max Vg min Vg max Vg min ize 190 to 260 ize 190 to 260 L Power control with pressure cut-off, hydraulically remote controlled ee page 21 for description and characteristic (pressure control remote controlled, )

15 92500-/ VO eries 1 Bosch exroth Corp. 15/68 L Power control L Power control with pressure cut-off and load sensing The load sensing control is a flow control option that operates as a function of the load pressure to regulate the pump displacement to match the actuator flow requirement. Circuit diagram L ize 40 to 145 The flow depends here on the cross section of the external sensing orifice (1) fitted between the pump outlet and the actuator. The flow is independent of the load pressure below the power curve and the pressure cut-off setting and within the control range of the pump. (1) The sensing orifice is usually a separately arranged load sensing directional valve (control block). The position of the directional valve piston determines the opening cross section of the sensing orifice and thus the flow of the pump. The load sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice (differential pressure Δp) and with it the pump flow constant. If the differential pressure Δp increases at the sensing orifice, the pump is swivelled back (towards V g min ), and, if the differential pressure Δp decreases, the pump is swivelled out (towards V g max ) until the pressure drop across the sensing orifice in the valve is restored. ize 190 to 260 Vg max Vg min M Δp orifice = p pump p actuator The setting range for Δp is between 200 psi and 365 psi (14 bar and 25 bar). (1) The standard differential pressure setting is 260 psi (18 bar). (Please state in clear text when ordering). The stand-by pressure in zero stroke operation (sensing orifice plugged) is slightly above the Δp setting. M In a standard L system the pressure cut-off is integrated in the pump control. In a LUV (flow sharing) system the pressure cut-off is integrated in the LUV control block. Vg max Vg min (1) The sensing orifice (control block) is not included in the pump supply. Characteristic L Operating pressure pb [psi (bar)] 5100 (350) 725 (50) V g min isplacement V g max

16 16/68 Bosch exroth Corp. 11VO eries /10.09 L Power control L2 Power control with load sensing, electric override This control option adds a proportional solenoid to override to the mechanically set load sensing pressure. The pressure differential change is proportional to the solenoid current. Increasing current = smaller Δp-setting ee following characteristic for details (example). Please consult us during the project planning phase. For solenoid specification, see page 12 (LE2) L5 Power control with load sensing, hydraulic override This control option adds an external proportional pilot pressure signal (to port ) to override the mechanically set load sensing pressure. Increasing pilot pressure = smaller Δp-setting ee following characteristic for details (example). Please consult us during the project planning phase. Characteristic L2 Characteristic L5 365 (25) 365 (25) ΔpL [psi (bar)] 260 (18) 200 (14) 145 (10) 75 (5) Control current I [m) (at 24V) ΔpL [psi (bar)] 260 (18) 200 (14) 145 (10) 75 (5) (5) (10) (15) (20) (25) Pilot pressure p [psi (bar)] 435 (30) Circuit diagram L2 ize 40 to 145 Circuit diagram L5 ize 40 to 145 M M Vg max Vg min Vg max Vg min ize 190 to 260 ize 190 to 260 M M Vg max Vg min V g max V g min

17 92500-/ VO eries 1 Bosch exroth Corp. 17/68 L Power control L... Power control with stroke limiter The stroke limiter can be used to vary or limit the displacement of the pump continuously over the whole control range. The displacement is set in LH with the pilot pressure p t (maximum 580 psi (40 bar)) applied to port or in LU by the control current applied to the proportional solenoid. C current of 12V (U1) or 24V (U2) is required to control the proportional solenoid. The power control overrides the stoke limiter control, i.e. below the hyperbolic power characteristic, the displacement is controlled by the control current or pilot pressure. When exceeding the power characteristic with a set flow or load pressure, the power control overrides and reduces the displacement following the hyperbolic characteristic. To permit operation of the pump displacement control from its starting position V g max to V g min, a minimum control pressure of 435 psi (30 bar) is required for the electric stroke limiter LU1/2 and the hydraulic stroke limiter LH2/6. The required control pressure is taken either from the load pressure, or from the externally applied control pressure at the port. To ensure functioning of the stroke limiter even at low operating pressure, port must be supplied with external control pressure of approx. 435 psi (30 bar). Note If no external control pressure is connected at, the shuttle valve must be removed. Note The spring return feature in the controller is not a safety device The spool valve inside the controller can get stuck in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). s a result, the axial piston unit can no longer supply the flow specified by the operator. Check whether your application requires that remedial measures be taken on your machine in order to bring the driven consumer into a safe position (e.g. immediate stop).

18 18/68 Bosch exroth Corp. 11VO eries /10.09 L Power control LH1/5 Hydraulic stroke limiter (negative characteristic) Circuit diagram LH1/5 ize 40 to 145 Control from V g max to V g min With increasing pilot pressure the pump swivels to a smaller displacement. tart of control (at V g max ), can be set from 60 to 145 psi (4 to 10 bar) tate start of control in clear text in the order. M tarting position without control signal (pilot pressure): V g max Characteristic H1 Vg max Vg min Increase in pilot pressure (V g max V g min ) Δp = 365 psi (25 bar) Pilot pressure pt [psi (bar)] etting range 510 (35) 435 (30) 365 (25) 290 (20) 220 (15) 145 (10) 60 (4) V g min isplacement V g max ize 190 to 260 T1 M Characteristic H5 Increase in pilot pressure (V g max V g min ) Δp = 145 psi (10 bar) Vg max Vg min Pilot pressure pt [psi (bar)] etting range 290 (20) 220 (15) 145 (10) 60 (4) V g min isplacement V g max

19 92500-/ VO eries 1 Bosch exroth Corp. 19/68 L Power control LH2/6 Hydraulic stroke limiter (positive characteristic) Circuit diagram LH2/6 ize 40 to 145 Control from V g min to V g max With increasing pilot pressure the pump swivels to a higher displacement. tart of control (at V g min ), can be set from 60 to 145 psi (4 to 10 bar) tate start of control in clear text in the order. M tarting position without control signal (pilot pressure): at operating pressure and external control pressure < 435 psi (30 bar): V g max Vg max Vg min at operating pressure or external control pressure > 435 psi (30 bar): V g min Characteristic H2 Increase in pilot pressure (V g min V g max ) Δp = 365 psi (25 bar) Pilot pressure pt [psi (bar)] etting range 510 (35) 435 (30) 365 (25) 290 (20) 220 (15) 145 (10) 60 (4) V g min isplacement V g max ize 190 to 260 Vg max Vg min M Characteristic H6 Increase in pilot pressure (V g min V g max ) Δp = 145 psi (10 bar) Pilot pressure pt [psi (bar)] etting range 290 (20) 220 (15) 145 (10) 60 (4) V g min isplacement V g max

20 20/68 Bosch exroth Corp. 11VO eries /10.09 L Power control LU1/2 Electric stroke limiter (positive characteristic) Control from V g min to V g max With increasing control current the pump swivels to a higher displacement. Technical data - solenoids LU1 LU2 Voltage 12 V (±20 %) 24 V (±20 %) Control current tart of control at V g max 400 m 200 m End of control at V g min 1200 m 600 m Limiting current Nominal resistance (at 68 F (20 C)) 5.5 Ω 22.7 Ω ither frequency 100 Hz 100 Hz ctuated time 100 % 100 % Type of protection see connector version, page 60 tarting position without control signal (control current): at operating pressure and external control pressure < 435 psi (30 bar): V g max at operating pressure or external control pressure > 435 psi (30 bar): V g min The following electronic controllers and amplifiers are available for actuating the proportional solenoids (see also BO controller C eries 20 E eries 21 E eries 22 E eries 30 E and application software nalog amplifier E Characteristic LU1/2 Control current I [m] isplacement V g min LU1 Circuit diagram LU1/2 ize 40 to 145 ize 190 to 260 Vg max LU2 Vg min V g max M M Vg max Vg min

21 92500-/ VO eries 1 Bosch exroth Corp. 21/68 Pressure control Pressure control Circuit diagram The pressure control keeps the pressure in a hydraulic system constant within its control range even under varying flow conditions. The variable pump only moves as much hydraulic fluid as is required by the actuators. If the operating pressure exceeds the setpoint set at the integral pressure control valve, the pump displacement is automatically swivelled back until the pressure deviation is corrected. ize 40 to 145 M tarting position in depressurized state: V g max etting range from 725 to 5100 psi (50 to 350 bar). Vg max Vg min Characteristic: Operating pressure pb [psi (bar)] 5100 (350) etting range max 725 (50) min 0 Flow q v [gpm (L/min )] max. 145 psi (10 bar) ize 190 to 260 V g max V g min M

22 22/68 Bosch exroth Corp. 11VO eries /10.09 Pressure control Pressure control with load sensing Circuit diagram The load sensing control is a flow control option that operates as a function of the load pressure to regulate the pump displacement to match the actuator flow requirement. ize 40 to 145 The flow depends here on the cross section of the external sensing orifice (1) fitted between the pump outlet and the actuator. The flow is independent of the load pressure below the pressure cut-off setting and within the control range of the pump. M (1) The sensing orifice is usually a separately arranged load sensing directional valve (control block). The position of the directional valve piston determines the opening cross section of the sensing orifice and thus the flow of the pump. Vg max Vg min The load sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice (differential pressure Δp) and with it the pump flow constant. If the differential pressure Δp increases, the pump is swivelled back (towards V g min ) and, if the differential pressure Δp decreases the pump is swivelled out (towards V g max ) until the pressure drop across the sensing orifice in the valve is restored. ize 190 to 260 Δp orifice = p pump p actuator The setting range for Δp is between 200 psi and 360 psi (14 bar and 25 bar). The standard differential pressure setting is 260 psi (18 bar). (Please state in clear text when ordering). M (1) The stand-by pressure in zero stroke operation (sensing orifice plugged) is slightly above the Δp setting. Vg max Vg min (1) The sensing orifice (control block) is not included in the pump supply. Characteristic: Operating pressure pb [psi (bar)] 5100 (350) 725 (50) 0 max min Flow q v [gpm (L/min)] max. 145 psi (10 bar)

23 92500-/ VO eries 1 Bosch exroth Corp. 23/68 Pressure control Pressure control, remote controlled Circuit diagram The remote control pressure cut-off regulator permits the adjustment of the pressure setting by a remotely installed pressure relief valve (1). Pilot flow for this valve is provide by a fixed orifice in the control module. etting range from 725 to 5100 psi (50 to 350 bar). In addition the pump can be unloaded into a standby pressure condition by an externally installed 2/2-way directional valve (2). ize 40 to 145 (2) (1) max. 5m Both functions can be used individually or in combination (see circuit diagram). The external valves are not included in the pump supply. M s a separate pressure relief valve (1) we recommend: BH 6 (manual control), see E Vg max Vg min Characteristic: Operating pressure pb [psi (bar)] 5100 (350) etting range max 725 (50) min 0 Flow q v [gpm (L/min)] max. 145 psi (10 bar) ize 190 to 260 (2) (1) max.5m Note The remote controlled pressure cut-off is also possible in combination with L, H and EP. M Vg max Vg min

24 24/68 Bosch exroth Corp. 11VO eries /10.09 Pressure control L Pressure control for parallel operation The pressure control L is suitable for pressure control of several axial piston pumps 11VO in parallel operation pumping into a common pressure header. The parallel pressure control has a pressure rise characteristic of approx. 220 psi (15 bar) from q v max to q v min. The pump regulates therefore to a pressure dependent swive angle. This results in stable control behavior, without the need of "staging" the individual pump compensators. With the externally installed pressure relief valve (1) the nominal pressure setting of all pumps connected to the system is adjusted to the same value. etting range from 725 to 5100 psi (50 to 350 bar). Each pump can be individually unloaded from the system by a separately installed 3/2-way directional valve (2). The check valves (3) in the service line (port ) or control line (port ) must be provided generally. The external valves are not included in the pump supply. s a separate pressure relief valve (1) we recommend: BH 6 (manual control), see E Characteristic L Operating pressure pb [psi (bar)] etting range max 5100 (350) 4850 (335) 2400 (165) 2200 (150) 945 (65) 725 (50) 0 min Flow q v [gpm (L/min)] max. 220 psi 15 bar) Circuit diagram L ize 40 to 145 ize 190 to 260 Vg max (2) Vg max (2) Vg min (3) (3) (1) M M M Vg min (1) M M (3) (3)

25 92500-/ VO eries 1 Bosch exroth Corp. 25/68 H Hydraulic control, pilot-pressure related With the pilot-pressure related control the pump displacement is adjusted in proportion to the pilot pressure applied to port. Maximum permissible pilot pressure p t max = 580 psi (40 bar) Control from V g min to V g max. With increasing pilot pressure the pump swivels to a higher displacement. tart of control (at V g min ), can be set from 60 to 145 psi (4 to 10 bar) tate start of control in clear text in the order. tarting position without control signal (pilot pressure): at operating pressure and external control pressure < 435 psi (30 bar): V g max at operating pressure or external control pressure > 435 psi (30 bar): V g min control pressure of 435 psi (30 bar) is required to swivel the pump from its starting position V g max to V g min. The required control pressure is taken either from the load pressure, or from the externally applied control pressure at the port. To ensure the control even at low operating pressure < 435 psi (30 bar) the port must be supplied with an external control pressure of approx. 435 psi (30 bar). Note If no external control pressure is connected at, the shuttle valve must be removed. Note The spring return feature in the controller is not a safety device The spool valve inside the controller can get stuck in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). s a result, the axial piston unit can no longer supply the flow specified by the operator. Check whether your application requires that remedial measures be taken on your machine in order to bring the driven consumer into a safe position (e.g. immediate stop). Characteristic H1 Increase in pilot pressure V g min to V g max Δp = 145 psi (10 bar) Pilot pressure pt [psi (bar)] etting range 290 (20) 220 (15) 145 (10) 60 (4) V g min isplacement Characteristic H2 Increase in pilot pressure V g min to V g max Δp = 365 psi (25 bar) Pilot pressure pt [psi (bar)] etting range 510 (35) 435 (30) 365 (25) 290 (20) 220 (15) 145 (10) 60 (4) V g min Circuit diagram H ize 40 to isplacement V g max V g max

26 26/68 Bosch exroth Corp. 11VO eries /10.09 H Hydraulic control, pilot-pressure related H. Hydraulic control with pressure cut-off The pressure cut-off corresponds to a pressure control which adjusts the pump displacement back to V g min when the pressure setting is reached. Circuit diagram H. ize 40 to 145 This function overrides the H control, i.e. the pilot-pressure related displacement control is functional below the pressure setting. M The pressure cut-off function is integrated into the pump control module and is preset to a specified value at the factory. etting range from 725 to 5100 psi (50 to 350 bar). Vg max Vg min Pressure cut-off characteristic Operating pressure pb [psi (bar)] 5100 (350) etting range 725 (50) 0 max min Flow q v [gpm (L/min)] max. 145 psi (10 bar) ize 190 to 260 M Vg max Vg min

27 92500-/ VO eries 1 Bosch exroth Corp. 27/68 EP Electric control with proportional solenoid With the electric control with proportional solenoid, the pump displacement is adjusted proportionally to the solenoid current, resulting in a magnetic control force, acting directly onto the control spool that pilots the pump control piston. Control from V g min to V g max With increasing control current the pump swivels to a higher displacement. tarting position wthout control signal (control current): at operating pressure and external control pressure < 435 psi (30 bar): V g max at operating pressure or external control pressure > 435 psi (30 bar): V g min control pressure of 435 psi (30 bar) is required to swivel the pump from its starting position V g max to V g min. The required control pressure is taken either from the load pressure, or from the externally applied control pressure at port. To ensure the control even at low operating pressure < 435 psi (30 bar) the port must be supplied with an external control pressure of approx. 435 psi (30 bar). Note If no external control pressure is connected at, the shuttle valve must be removed. Note Install pump with EP control in the oil tank only when using mineral hydraulic oils and an oil temperature in the tank of maximum 180 F (80 C). The following electronic control units and amplifiers are available for actuating the proportional solenoids (see also BO controller C eries 20 E eries 21 E eries 22 E eries 30 E and application software nalog amplifier E Note The spring return feature in the controller is not a safety device The spool valve inside the controller can get stuck in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). s a result, the axial piston unit can no longer supply the flow specified by the operator. Check whether your application requires that remedial measures be taken on your machine in order to bring the driven consumer into a safe position (e.g. immediate stop). Technical data, solenoid at EP1, EP2 EP1 EP2 Voltage 12 V (±20 %) 24 V (±20 %) Control current tart of control at V g min 400 m 200 m End of control at V g max 1200 m 600 m Limiting current Nominal resistance (at 68 F (20 C)) 5.5 Ω 22.7 Ω ither frequency 100 Hz 100 Hz ctuated time 100 % 100 % Type of protection Characteristic EP1/2 Control current I [m] isplacement V g min Circuit diagram EP1/2 ize 40 to 260 Vg max EP1 EP2 Vg min see connector version, page 60 V g max M

28 28/68 Bosch exroth Corp. 11VO eries /10.09 EP Electric control with proportional solenoid EP. Electric control with pressure cut-off The pressure cut-off corresponds to a pressure control which adjusts the pump displacement back to V g min when the pressure setting is reached. This function overrides the EP control, i.e. the control current related displacement control is functional below the pressure setting. The valve for the pressure cut-off is integrated in the control case and is set to a fixed specified pressure value at the factory. etting range from 725 to 5100 psi (50 to 350 bar) Circuit diagram EP. ize 40 to 145 Vg max Vg min M Pressure cut-off characteristic Operating pressure pb [psi (bar)] etting range 5100 (350) 725 (50) 0 max min Flow q v [gpm (L/min)] max. 145 psi (10 bar) ize 190 to 260 Vg max Vg min M

29 92500-/ VO eries 1 Bosch exroth Corp. 29/68 Notice

30 30/68 Bosch exroth Corp. 11VO eries /10.09 imensions size 40 LC Power control L with pressure cut-off, cross sensing control C and load sensing control 0.59 (15) 0.38 (9.7) 9.76 (248) 7.20 (183) 4.84 (123) 4.80 (122) *) 2.91 (74) M please request a certified drawing. imensions in inches and (millimeters). View clockwise rotation (counter-clockwise rotation) *) Center of gravity I4.00 (ø101.6) Flange E J (B) (1.11) (111) C W L 0.79 (20) *) 1.54 (39) 2.95 (75) 4.06 (103) 5.75 (146) 4.33 (110) () etail 0.55 (14) () 4.72 (120) (100) 0.83 (21) 2.95 (75) 8.86 (225) V M 5.75 (146) 6.97 (177) etail W etail V 1.97 (50) 3.06 (77.8) 0.75 (19) 2.00 (50.8) 1.69 (42.9) 0.94 (23.8)

31 92500-/ VO eries 1 Bosch exroth Corp. 31/68 imensions size 40 rive shaft P Parallel keyed shaft IN 6885, 10x8x56 I3.17 (ø80.5) 1.38 (35) I1.26 (ø32) M12x1.75 1) 2) 0.30 (7.5) 2.28 (58) 0.87 (22) 2.60 (66) E1x0.2 IN509 I1.57 (ø40) I3.17 (ø80.5) 3/8-16UNC-2B plined shaft E J744 T plined shaft E J744 1 in 156/32 3) 1 1/4 in 142/24P 3) 1.50 (38) 1.89 (48) (22) (7.5) 1.18 (30) 1.81 (46) I1.57 (ø40) I3.17 (ø80.5) 7/16-14UNC-2B please request a certified drawing. imensions in inches and (millimeters) (28) (9.5) 1.57 (40) 2.20 (56) I1.57 (ø40) Ports esignation Function tandard ize 2) Max. pressure [psi (bar)] 4) tate ervice line port E J518 3/4 in 5800 (400) O Fixing thread IO 68 3/8in-16UNC-2B; 0.63 (16) deep uction port E J518 2 in 435 (30) O Fixing thread IO 68 1/2in-13UNC-2B; 0.67 (17) deep, Tank port IO /8in-14UNF-2B; 0.55 (14) deep 145 (10) 5) ir bleed IO /8in-14UNF-2B; 0.55 (14) deep 145 (10) Measurement point, positioning chamber IO /16in-18UNF-2B; 0.47 (12) deep 5800 (400) M Measurement point, service line port IO /16in-18UNF-2B; 0.47 (12) deep 5800 (400) Pilot pressure port in version with load sensing () and remote controlled pressure cut-off () Pilot pressure port in version with stroke limiter (H...), 2-stage pressure cut-off (E) and H Pilot pressure port in version with cross sensing (C) and power override (L3) power overrice (L1) Port for control pressure (controller) in version with stroke limiter (H.., U2), H and EP with screw union E10 - PLM (otherwise closed) 1) Center bore according to IN 332 (thread acc. to IN 13) 2) For maximum tightening torque, please refer to general notes on page 64 3) NI B92.1a-1976, 30 pressure angle, flat root, side fit, tolerance class 5 4) epending on adjustment data and operating pressure 5) epending on installation position, T1 or must be connected (see also page 61) O= Open, must be connected (closed on delivery) = Closed (in normal operation) IO /16in-18UNF-2B; 0.47 (12) deep 5800 (400) O IO /16in-18UNF-2B; 0.47 (12) deep 580 (40) O IO /16in-18UNF-2B; 0.47 (12) deep 5800 (400) 580 (40) IO /16in-18UNF-2B; 0.47 (12) deep 580 (40) O O

32 32/68 Bosch exroth Corp. 11VO eries /10.09 imensions size 40 LH1/LH5 Power control with pressure cut-off and hydraulic stroke limiter (negative characteristic) 9.76 (248) 8.11 (206) 0.22 (5.5) 2.28 (58) please request a certified drawing. imensions in inches and (millimeters). LH2/LH6 Power control with pressure cut-off and hydraulic stroke limiter (positive characteristic) 0.85 (21.5) 2.36 (60) 9.76 (248) 8.11 (206) 5.16(131) 4.17 (106) 6.02 (153) 5.16 (131) 4.17 (106) 6.02 (153) 0.83 (21) H1/5 L 3.07 (78) 0.83 (21) H2/6 L 3.07 (78) LU1/LU2 Power control with pressure cut-off and electric stroke limiter (positive characteristic) 1.14 (29) 9.76 (248) 8.11 (206) 4.17 (106) 6.02 (153) L3 Power control with high-pressure related override, pressure cut-off and load sensing control 2.05 (52) (290) 8.98 (228) 5.51 (140) U1/2 L 3.07 (78) 4.37 (111) L (21) 4.33 (110) L1E Power control with pilot-pressure related override (negative) and 2-stage pressure cut-off 4.23 (107.5) 1.38 (35) 2.78 (70.5) 9.76 (248) 5.16 (131) L2E Power control with pilot-pressure related override (positive) and 2-stage pressure cut-off 2.20 (56) 0.83 (21) E L (115)