Axial Piston Variable Pump A15VSO

Transcription

1 Axial iston Variable ump A15VSO RE 928/5.12 1/4 Replaces: 3.1 Data sheet Series 1 Sizes 175 to 28 Nominal pressure 35 bar Maximum pressure 42 bar Open circuit Contents Ordering code for standard program 2 Technical data 5 ower controller 1 Stroke limiter 13 ressure controller 17 Dimensions size Dimensions size Dimensions size 28 3 Through drive dimensions 34 Overview of mounting options 35 Combination pumps A15VSO + A15VSO 36 Connector for solenoids 37 Installation instructions 38 General instructions 4 Features Variable axial piston pump of swashplate design for hydrostatic drives in open circuit Employment preferably in stationary applications The flow is proportional to the drive speed and displacement. The flow can be infinitely varied by adjusting the swashplate angle. 1 % mooring function possible depending on specific controller (swivel mode, motor mode). A wide range of highly adaptable control devices with different control and regulating functions, for all important applications. The universal through drive is suitable for mounting gear pumps and axial piston pumps up to the same size, i.e. 1 % through drive. Compact design High efficiency High power density Low noise

2 2/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Ordering code for standard program A15VS O V / 1 M V E4 1 E Axial piston unit 1 Swashplate design, variable, nominal pressure 35 bar, maximum pressure 42 bar A15VS Operating mode 2 ump, open circuit O Size (NG) 3 Geometric displacement, see table of values on page Control device: basic controller 1) ower controller fixed setting l l l LR Override electric, proportional negative U = 24 V DC m m m L4 high pressure, proportional negative with stop m m l CR (summation hp-control) Stroke limiter electric, proportional positive U = 24 V DC l l l E2 electric, two-point positive U = 24 V DC l l l E6 pilot pressure, proportional negative l l l H5 p = 35 bar positive m m m H6 ressure controller with one-sided deflection ressure controller with mooring function fixed setting l l l DR hydraulic, remote controlled positive (external) l l l DG for parallel operation positive m m l D 2) fixed setting m m m MD 3) Auxiliary controller: pressure controller 1) Without auxiliary controller (without symbol) l l l ressure controller with fixed setting l l l DR 4) 5 onesided deflection hydraulic, remote controlled positive (external) l l l DG 5) for parallel operation positive m m l D 2)6) Auxiliary controller: stroke limiter or bleed-off 1) 7) Without auxiliary controller stroke limiter (without symbol) l l l Stroke limiter electric, proportional positive U = 24 V DC l l l E2 6 electric, two-point positive U = 24 V DC l l l E6 pilot pressure, proportional negative l l l H5 p = 35 bar positive m m m H6 Auxiliary controller: load sensing 1) Without auxiliary controller load sensing (without symbol) l l l 7 Load sensing pump pressure, internal fixed setting l l l S = Available m = On request = Not available 1) The basic controller (4) can be combined with a maximum of two auxiliary controllers (5, 6, 7) 2) Cannot be combined with E2, E6 and H5, H6 from auxiliary controller stroke limiter (6A) 3) Cannot be combined with E2, E6 and H5, H6 from auxiliary controller stroke limiter (6). All combinable auxiliary controller are suitable for mooring function. 4) Cannot be combined with basic pressure controller DR, DG, D (4) 5) Cannot be combined with basic pressure controller DG and D (4) 6) Cannot be combined with basic pressure controller D (4) 7) Cannot be combined with basic controllers stroke limiter and pressure controller (4)

3 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 3/4 Ordering code for standard program A15VS O V / 1 M V E4 1 E Depressurized basic setting and external control pressure supply 8) Maximum swivel angle (V g max ), without external control pressure supply (standard for power and pressure control) Maximum swivel angle (V g max ), with external control pressure supply (integrated shuttle valve) (standard for negative stroke limiter) Minimum swivel angle (V g min ), with external control pressure supply (integrated shuttle valve) (standard for positive stroke limiter) l l l A l l l B l l l C Connector for solenoids 9) Without (only with hydraulic controls) l l l HIRSCHMANN connector l l l H Swivel angle indicator 1 With visual swivel angle indicator V Series 11 Series 1, index 1 Configuration of ports and fastening threads 12 Metric, port threads with O-ring seal according to ISO 6149 M 13 Direction of rotation Viewed on drive shaft clockwise l l l R Seals counter-clockwise l l l L 14 FKM (fluor-caoutchouc) V Mounting flange 15 SAE J E4 16 Drive shaft Splined shaft DIN 548 W5x2x24x9g l l A2 arallel keyed shaft DIN 6885 W6x2x28x9g l A4 Ø5 l l B2 Ø6 l B4 Service line ports 17 SAE flange port A: on side (45 ) 1 Rotary group version 18 Noise-optimized for n = 15 / 18 rpm (standard) E = Available m = On request = Not available 8) For description, see control device 9) Connectors for other electric components can deviate.

4 4/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Ordering code for standard program A15VS O V / 1 M V E4 1 E Through drive Flange SAE J744 Coupling for splined shaft 1) Mounting variant Diameter Symbol 11) Designation Diameter Designation repared for through drive, with pressure-proof plugged cover l l l U 82-2 (A) A1 5/8 in 9T 16/32D S2 l l m A1S2 A2 5/8 in 9T 16/32D S2 m m m A2S (B) B3 7/8 in 13T 16/32D S4 m m m B3S4 1 in 15T 16/32D S5 m m m B3S (C) C3 1 1/4 in 14T 12/24D S7 m m m C3S7 1 1/2 in 17T 12/24D S9 m m m C3S (D) D4 W45x2x21x9g A1 m m m D4A1 W5x2x24x9g A2 m m m D4A (E) E4 W5x2x24x9g A2 l l l E4A2 W6x2x28x9g 19 A4 m m l E4A4 Flange, ISO (metric) Coupling for splined shaft 1) Mounting variant Diameter Symbol 11) Designation Diameter Designation K1 3/4 in 11T 16/32D S3 m m m K1S3 K2 3/4 in 11T 16/32D S3 l m m K2S3 K5 3/4 in 11T 16/32D S3 l l m K5S3 1-2 L5 7/8 in 13T 16/32D S4 l l m L5S /4 in 14T 12/24D S7 m m m 4S R4 1 1/2 in 17T 12/24D S9 l l m R4S9 1 3/4 in 13T 8/16 D T1 m m m R4T M4 1 in 15T 16/32D S5 m m m M4S5 W32x2x14x9g Z7 m m m M4Z N4 W4x2x18x9g Z9 m m m N4Z9 Sensors 2 Without Standard / special version Standard version 21 Special version S Note Short designation X on a feature refers to a special version not covered by the ordering code. = Available m = On request = Not available 1) Coupling for splined shaft according to ANSI B92.1a (3 pressure angle, flat root, side fit, tolerance class 5) or to DIN ) Mounting drillings pattern viewed on through drive with control at top

5 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 5/4 Technical data Hydraulic fluid Before starting project planning, please refer to our data sheet RE 922 (mineral oil) for detailed information regarding the choice of hydraulic fluid and application conditions. The variable pump A15VSO is currently approved for operation with mineral oil. lease contact us about operation with environmentally acceptable or HF hydraulic fluids. Selection diagram Viscosity ν in mm 2 /s VG 22 VG 32 VG 46 VG 68 VG ν opt Details regarding the choice of hydraulic fluid The correct selection of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in an open circuit, the reservoir 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 shaded area of the selection diagram). We recommended that the higher viscosity class be selected in each case. Example: At an ambient temperature of X C, an operating temperature of 6 C is set in the circuit. In the optimum operating viscosity range (ν opt, shaded area), this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68. Note The case drain temperature, which is affected by pressure and speed, is always higher than the reservoir temperature. At no point of the component may the temperature be higher than 115 C, however. The temperature difference specified below is to be taken into account when determining the viscosity in the bearing. If the above conditions cannot be maintained due to extreme operating parameters, please contact us Temperature t in C t min = -4 C Hydraulic fluid temperature range t max = +115 C Viscosity and temperature of hydraulic fluid Viscosity [mm 2 /s] Temperature Comment Transport and storage at ambient temperature T min -5 C T opt = +5 C to +2 C factory preservation: up to 12 months with standard, up to 24 months with long-term (Cold) start-up 1) n max = 16 T St -4 C t 3 min, low load (2 bar p 5 bar), n 1 rpm ermissible temperature difference DT 25 K between axial piston unit and hydraulic fluid Warm-up phase n = 16 to 4 T = -4 C to -25 C at p nom,.5 n nom and t 15 min Operating phase Temperature difference Maximum temperature DT = approx. 5 K 115 C 11 C between hydraulic fluid in the bearing and at port T in the bearing measured at port T n = 4 to 1 measured at port T, Continuous operation T = -25 C to + 9 C n opt = 16 to 36 no restriction within the permissible data Short-term operation n min < 1 to 5 T max = +11 C measured at port T, t < 3 min, p <.3 p nom FKM shaft seal 1) T +115 C see page 6 1) At temperatures below -25 C, an NBR shaft seal is required (permissible temperature range: -4 C to +9 C).

6 6/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Technical data Filtration of the hydraulic fluid Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit. To ensure the functional reliability of the axial piston unit, a gravimetric analysis of the hydraulic fluid is necessary to determine the amount of solid contaminant and to determine the cleanliness level according to ISO 446. A cleanliness level of at least 2/18/15 is to be maintained. At very high hydraulic fluid temperatures (9 C to maximum 115 C), a cleanliness level of at least 19/17/14 according to ISO 446 is necessary. Case drain pressure The case drain pressure at ports T 1 to T 3 may be a maximum of 1.2 bar higher than the inlet pressure at port S but not higher than p L max 4 bar absolute. A case drain line to the reservoir is required. Shaft seal Temperature range The FKM shaft seal may be used for case drain temperatures from -25 C to +115 C. Note For application cases below -25 C, an NBR shaft seal is required (permissible temperature range: -4 C to +9 C). State NBR shaft seal in plain text when ordering. lease contact us.

7 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 7/4 Technical data Operating pressure range (operating with mineral oil) ressure at service line port A Nominal pressure p nom 35 bar absolute Maximum pressure p max 42 bar absolute Single operating period 1 s Total operating period 3 h Minimum pressure (high-pressure side) 15 bar for lower pressure, please contact us. Rate of pressure change R A max 16 bar/s Definition Nominal pressure p nom The nominal pressure corresponds to the maximum design pressure. Maximum pressure p max The maximum pressure corresponds to the maximum operating pressure within the single operating period. The sum of the single operating periods must not exceed the total operating period. Minimum pressure (high-pressure side) Minimum pressure on the high-pressure side (A or B) which is required in order to prevent damage to the axial piston unit. ressure p p nom Dp Dt Minimum pressure (Inlet) Minimum pressure at suction port S (inlet) which is required in order to prevent damage to the axial piston unit. The minimum pressure is dependent on the speed and displacement of the axial piston unit. Rate of pressure change R A Maximum permissible rate of pressure rise and reduction during a pressure change over the entire pressure range. Time t ressure at suction port S (Inlet) Minimum pressure p S min.8 bar absolute Maximum pressure p S max 3 bar absolute ressure p Single operating period Maximum pressure p max Nominal pressure p nom t 1 t 2 t n Minimum pressure (high-pressure side) Time t Total operating period = t 1 + t t n

8 8/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Technical data Table of values (theoretical values, without efficiency and tolerances; values rounded) Size NG Displacement geometric, V g max cm per revolution V g min cm 3 1) 1) 1) Maximum speed 2) at V g max n nom rpm at V g V 3) g max n max rpm Volume flow at n nom and V g max q v max L/min ower at n nom, V g max and Dp = 35 bar max kw Torque at V g max and p = 35 bar T max Nm Rotary stiffness W5 A2 c knm/rad drive shaft W6 A4 c knm/rad 664 ø5 B2 c knm/rad ø6 B4 c knm/rad 62 Moment of inertia for rotary group J GR kgm Maximum angular acceleration 4) a rad/s Case volume V L Mass (approx.) m kg ) Mooring function (swivel mode) possible up to 1% V g max 2) The values are valid: --for the optimum viscosity range from n opt = 16 to 36 mm 2 /s --with hydraulic fluid on the basis of mineral oil --for an absolute pressure p abs = 1 bar at suction port S 3) Maximum speed (limiting speed) with increased inlet pressure p abs at suction port S and V g < V g max, see the following diagram Speed n / nnom Displacement V g / V g max Inlet pressure pabs [bar] 4) The data are valid for values between the minimum required and maximum permissible speed. Valid for external excitation (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 load capacity of the connection parts must be considered. Note Operation above the maximum values or below the minimum values may result in a loss of function, a reduced service life or in the destruction of the axial piston unit. We recommend testing the loads by means of experiment or calculation / simulation and comparison with the permissible values.

9 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 9/4 Technical data ermissible radial and axial forces of the drive shaft Size NG Drive shaft ø5 W5 ø5 W5 ø6 W6 Maximum radial force at distance a (from shaft collar) a F q Fq max N a mm Maximum axial force Fax + + F ax max N F ax max N Note Special requirements apply in the case of belt drives. lease contact us. Influence of the direction of the permissible axial force: + F ax max = Increase in service life of bearings F ax max = Reduction in service life of bearings (avoid) ± 85 ± 9 ± 1 ermissible input and through-drive torques Size NG Torque at V g max and Dp = 35 bar 1) T max Nm Input torque at drive shaft, maximum 2) A2 W5x2x24x9g T E max Nm A4 W6x2x28x9g T E max Nm 35 B2 ø5 T E max Nm B4 ø6 T E max Nm 28 Maximum through-drive torque T D max Nm ) Efficiency not considered 2) For drive shafts without radial force Torque distribution T A1 T A2 T E 1st pump 2nd pump T D Determining the operating characteristics Volume flow q v = Torque T = ower = V g n η v 1 V g Δp 2 π η mh [L/min] [Nm] 2 π T n = q v Δp [kw] 6 6 η t V g = Displacement per revolution in cm 3 Δp = Differential pressure in bar n = Speed in rpm η v = Volumetric efficiency η mh = Mechanical-hydraulic efficiency η t = Total efficiency (n t = n v n mh )

10 1/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 ower controller LR - ower controller, fixed setting 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. 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. The operating pressure acts on a rocker via a measuring piston which moves with the control. An externally adjustable spring force counteracts this, it determines the power setting. The depressurized basic setting is V g max. If the operating pressure exceeds the set spring force, the control valve will be actuated by the rocker and the pump will swivel back from the basic setting V g max toward V g min. This shortens the leverage at the rocker, allowing the operating pressure to rise at the same ratio as the displacement is reduced (p B V g = fixed). The hydraulic output power (characteristic LR) is influenced by the efficiency of the pump. When ordering, state in plain text: Drive power in kw Drive speed n in rpm Maximum flow q V max in L/min After clarifying the details, we can prepare an updated power diagram. LR Schematic LR A S M S M T 1 T 2 T 3 Characteristic LR 35 bar Operating pressure pb [bar] Setting range Beginning of control 5 bar V g min Displacement V g max

11 S M S M T 1 T 2 T 3 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 11/4 ower controller L4 ower controller, electric, proportional (negative control) A control current acts against the mechanical power control adjustment spring via a proportional solenoid. The mechanically adjusted basic power setting can be reduced by means of different control current settings. Increase in control current = decrease in power. The following amplifiers are available for controlling the proportional solenoids. Recommended amplifier for stationary applications: Analog amplifier VT-VSA1-1 RE 3111 Digital amplifier VT-VSD-1 RE 3523 Further information can also be found on the internet at Schematic L4 A L3/4 Technical data, solenoid L4 Voltage 24 V (±2 %) Control current Beginning of control 2 ma End of control 6 ma Limiting current.77 A Nominal resistance (at 2 C) 22.7 Ω Dither frequency 1 Hz Duty cycle 1 % Type of protection see connector design page 37 When ordering, state in plain text: Drive power in kw at start of control Drive speed n in rpm Maximum flow q V max in L/min S M S M T 1 T 2 T 3 Change in beginning of control in bar when control current is changed from minimum to maximum. Size p start of control in control range from 2 to 6 ma bar bar bar Note For de-energized operating state: Start of control increase +5 bar Effect of power overrides at rising current Operating pressure pb [bar] 5 V g min Displacement V g max I L4

12 12/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 ower controller CR Summation hp-control of two power-controlled pumps, high-pressure-related override (with stop) LR With two A15VSO units of the same size working in different circuits, the CR controller limits the overall power. The CR works like the normal LR with a fixed maximum power setting along the power hyperbola. The high-pressure-related override reduces the power setpoint in dependence on the operating pressure of the other pump. That happens proportionally below the start of control and is blocked by a stop when the minimum power is reached. Here, the CR port of the one pump has to be connected to the port of the other pump. The maximum power of the first pump is reached when the second pump is working at idle when depressurized. When defining the maximum power, the idle power of the second pump has to be taken into account. The minimum power of each pump is reached when both pumps are working A at high pressure. The minimum power usually equates to 5% of the total power. ower that in unused through activated pressure controls or other overrides remains unconsidered. When ordering, please state separately for each pump: Maximum drive power max in kw Minimum drive power min in kw Drive speed n in rpm Maximum flow S qm V S max in L/min M T 1 T 2 T 3 CR Schematic CR CR A S M S M T 1 T 2 T 3 Effect of power override with increasing pressure Characteristic CR Operating pressure pb [bar] 3 bar Setting range Beginning of control 5 bar p HD (2nd pump) 5 CR V g min Displacement V g max Operating pressure pb [bar] V g min Displacement V g max

13 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 13/4 Stroke limiter E2 Stroke limiter, electric, proportional (positive control) With the electrical stroke limiter with proportional solenoid, the pump displacement is steplessly adjusted in proportion to the current by means of magnetic force. Basic setting without pilot signal is V g min. This includes the mechanically depressurized basic setting V g min (see ordering code digit 8). With increasing control current the pump swivels to a higher displacement (from V g min to V g max ). The necessary control power is taken from the operating pressure or the external control pressure applied to port. To enable the pump to be adjusted from the zero basic setting or from a low operating pressure, port must be supplied with an external control pressure 1) of at least 3 bar, maximum 5 bar. Note If no external control pressure is connected to, the version "Maximum swivel angle (V g max ), without external control pressure supply" is to be ordered (see ordering code digit 8, A). Characteristic E2 Control current I [ma] Schematic E V g min Displacement Technical data, solenoid E2 Voltage 24 V (±2 %) Control current Beginning of control at V g min 2 ma End of control at V g max 6 ma 2) Limiting current.77 A Nominal resistance (at 2 C) 22.7 Ω Dither frequency 1 Hz Duty Cycle 1 % Type of protection see connector design page 37 A The following amplifiers are available for controlling the proportional solenoids. Recommended amplifier for stationary applications: Analog amplifier VT-VSA1-1 RE 3111 Analog amplifier module VT-MSA1 RE Digital amplifier VT-VSD-1 RE 3523 Further information can also be found on the internet at When ordering, state in plain text: Drive speed n in rpm Maximum flow q V max in L/min Minimum flow q V min in L/min M S Note S M T 1 T 2 T 3 The spring return feature in the controller is not a safety device The controller can stick in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). As a result, the control will no longer respond correctly to the operator's commands. Check whether the application on your machine requires additional safety measures, in order to bring the driven actuator into a controlled and safe position (e. g. immediate stop). 1) With an external supply of control pressure, it is possible for the pump to swivel slightly beyond the zero position (to the mechanical stop). 2) Because of the controller hysteresis, a control current of up to 65 ma may be required for the position.

14 14/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Stroke limiter E6 Stroke limiter, electric, two-point (positive control) With the electric stroke limiter with switching solenoid, the displacement of the pump is adjusted between V g min and V g max. Basic setting without current is V g min. This includes the mechanically depressurized basic setting V g min (see ordering code digit 8). Schematic E6 When the solenoid is energized, the pump swivels from V g min to V g max. The necessary control power is taken from the operating pressure or the external control pressure applied to port. To enable the pump to be adjusted from the zero basic setting or from a low operating pressure, port must be supplied with an external control pressure 1) of at least 3 bar, maximum 5 bar. Note If no external control pressure is connected to, the version "Maximum swivel angle (V g max ), without external control pressure supply" is to be ordered (see ordering code digit 8, A). A Technical data, solenoid Voltage E6 24 V Nominal resistance (at 2 C) 21.7 Ω Nominal power 26.5 W Test current.67 A Duty Cycle 1 % Type of protection see connector design page 37 When ordering, state in plain text: Drive speed n in rpm Maximum flow q V max in L/min Minimum flow q V min in L/min M S Note S M T 1 T 2 T 3 The spring return feature in the controller is not a safety device The controller can stick in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). As a result, the control will no longer respond correctly to the operator's commands. Check whether the application on your machine requires additional safety measures, in order to bring the driven actuator into a controlled and safe position (e. g. immediate stop). 1) With an external supply of control pressure, it is possible for the pump to swivel slightly beyond the zero position (to the mechanical stop).

15 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 15/4 Stroke limiter H5 Stroke limiter, pilot pressure, proportional (negative control) With pilot-pressure-related control, the pump displacement is adjusted in proportion to the pilot pressure applied at port H5. Basic setting without pilot signal is V g max. This includes the mechanically depressurized basic setting V g max (see ordering code digit 8). Schematic H5 H 5 Maximum permissible pilot pressure p St max = 1 bar With increasing pilot pressure the pump swivels to a smaller displacement (from V g max to V g min ). Beginning of control V g max : 1 bar The necessary control power is taken from the operating pressure or the external control pressure applied to port. To enable the pump to be adjusted at low operating pressure, port must be supplied with an external control pressure 1) of at least 3 bar, maximum 5 bar. A Note If no external control pressure is connected to, the version "Maximum swivel angle (V g max ), without external control pressure supply" is to be ordered (see ordering code digit 8, A). Characteristic H5 (negative) Control pressure characteristic V g max to V g min p = 35 bar 45 4 S M S M T 1 T 2 T 3 ilot pressure pst [bar] V g min Displacement V g max Note The spring return feature in the controller is not a safety device The controller can stick in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). As a result, the control will no longer respond correctly to the operator's commands. Check whether the application on your machine requires additional safety measures, in order to bring the driven actuator into a controlled and safe position (e. g. immediate stop). When ordering, state in plain text: Drive speed n in rpm Maximum flow q V max in L/min Minimum flow q V min in L/min 1) With an external supply of control pressure, it is possible for the pump to swivel slightly beyond the zero position (to the mechanical stop).

16 16/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Stroke limiter H6 Stroke limiter, pilot pressure, proportional (positive control) With pilot-pressure-related control, the pump displacement is adjusted in proportion to the pilot pressure applied at port H6. Basic setting without pilot signal is V g min. This includes the mechanically depressurized basic setting V g min (see ordering code digit 8). Schematic H6 H 6 Maximum permissible pilot pressure p St max = 1 bar With increasing pilot pressure the pump swivels to a larger displacement (from V g min to V g max ). Beginning of control V g min : 1 bar The necessary control power is taken from the operating pressure or the external control pressure applied to port. To enable the pump to be adjusted from the zero basic setting or from a low operating pressure, port must be supplied with an external control pressure 1) of at least 3 bar, maximum 5 bar. A Note If no external control pressure is connected to, the version "Maximum swivel angle (V g max ), without external control pressure supply" is to be ordered (see ordering code digit 8, A). Characteristic H6 (positive) Control pressure increase V g min to V g max p = 35 bar M S S M T 1 T 2 T 3 ilot pressure pst [bar] V g min Displacement V g max Note The spring return feature in the controller is not a safety device The controller can stick in an undefined position by internal contamination (contaminated hydraulic fluid, abrasion or residual contamination from system components). As a result, the control will no longer respond correctly to the operator's commands. Check whether the application on your machine requires additional safety measures, in order to bring the driven actuator into a controlled and safe position (e. g. immediate stop). When ordering, state in plain text: Drive speed n in rpm Maximum flow q V max in L/min Minimum flow q V min in L/min 1) With an external supply of control pressure, it is possible for the pump to swivel slightly beyond the zero position (to the mechanical stop).

17 S M S M T 1 T 2 T 3 S M S M T 1 T 2 T 3 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 17/4 ressure controller DR - ressure controller with one-sided deflection, fixed setting L3/4 The pressure controller keeps the pressure in a hydraulic system constant within its control range even with varying volume flow. The variable pump only moves as much hydraulic fluid as is required by the consumers. If the operating pressure exceeds the setpoint value set at the integral pressure valve, the pump control will shift toward a smaller displacement and the control deviation will decrease. Schematic DR DR Basic position in depressurized state: V g max Setting range from 5 to 35 bar. Characteristic DR Operating pressure pb [bar] 35 max A A 5 S M S M T 1 T 2 T 3 S M S M T 1 T 2 T 3 q V min Flow q V [L/min] q V max Hydraulic V g min stop The hydraulic V g min stop opens the valve outlet to the case drain chamber when a minimum position is reached, damping the controller and reducing overshoot. This can cause a connection from high pressure or external control pressure via the controller and the hydraulic V g min stop to the case drain chamber. When ordering, state in plain text: ressure setting p in bar Drive speed n in rpm Maximum flow q V max in L/min min

18 18/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 ressure controller DRS - ressure controller with 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 Amatch the actuator flow requirement. 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 controller setting and within the control range of the pump. 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. S M S M T 1 T 2 T 3 The load sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice (differential pressure p), and with it the flow, constant. If the differential pressure p increases at the sensing orifice, the pump is swiveled back (towards V g min ), and, if the differential pressure p decreases, the pump is swiveled out (towards V g max ) until equilibrium at the sensing orifice is restored. p sensing orifice = p pump p consumer DR Setting range for p 14 to 3 bar (please state in plain text ) Characteristic DRS Operating pressure pb [bar] 35 A max 14 min q V min Flow q V [L/min] q V max Schematic DRS S M S M T 1 T 2 T 3 DRS X A S M S Standard adjustment 14 bar The standby pressure in zero stroke operation (sensing orifice plugged) is slightly above the p setting. Hydraulic V g min stop The hydraulic V g min stop opens the valve outlet to the case drain chamber when a minimum position is reached, damping the controller and reducing overshoot. This can cause a connection from high pressure or external control pressure via the controller and the hydraulic V g min stop to the case drain chamber. (1) When ordering, state in plain text: M ressure setting A A DR A Differential pressure load sensing controller Dp in bar Drive speed n in rpm Maximum flow q V max in L/min S M S M T 1 T 2 T 3 S M S M T 1 T 2 T 3 (1) The sensing orifice (control block) is not included in the delivery contents.

19 R L5 RE 928/5.12 A15VSO Series 1 R Bosch Rexroth AG L 5 19/4 ressure controller DG ressure controller with one-sided deflection, hydraulic remote control (positive control) The remote controlled pressure control has a fixed-setting Dp value. A separately connected pressure relief valve at port X (1) enables the pressure control to be remotely controlled. Characteristic DG T 1 T 2 T 3 Setting range D14 to 25 bar Recommended value 2 bar M Control volume A A at X: approx 1.6 l L/min (static) at Dp 2 bar In addition a separately configured 2/2 directional valve (2) van be operated to start the pump with low operating pressure (standby pressure). Both functions can be used individually or in combination (see schematic). The external valves are not included in the delivery contents. As a separate pressure relief valve (1) we recommend: For DBD.6, see RE S 2542 M S M T 1 T 2 T 3 Operating pressure pb [bar] A Dp pressure control valve V g max V g min q V min Flow q V [L/min] q S M V max S M T 1 T 2 T 3 Hydraulic V g min stop The hydraulic V g min stop opens the valve outlet to the case drain chamber when a minimum position is reached, damping the controller and reducing overshoot. This can cause a connection from high pressure or external control pressure via the controller and the hydraulic V g min stop to the case drain chamber. DRS Operating pressure p in bar (test pressure for DG) For function and description of pressure control DR, see page 17. Schematic DG Differential pressure Dp in bar Drive speed n in rpm X (2) X (1) Maximum flow q V max in L/min Note for setting remote controlled pressure control The setting value for the external pressure relief valve plus the differential pressure value at the pressure control valve determines the level of pressure control. Example: External pressure relief valve 33 bar Differential pressure at pressure control valve 2 bar A ressure control at = 35 bar A V g min V g max T 1 T 2 T 3 S M S M T 1 T 2 T 3 S M S M T 1 T 2 T 3

20 2/4 Bosch Rexroth AG A15VSO L6 Series 1 RE 928/5.12 ressure controller L5 L 5 L 6 D ressure controller with one-sided deflection for parallel operation (positive control) T 1 The pressure control D is suitable for pressure control of several axial piston pumps A15VSO in parallel operation pumping into a common pressure line. The pressure control has a pressure increase of approx. 7 bar from q v max to q v min. The pump regulates therefore to a pressure dependent swivel angle. This means a parallel or synchronous control behavior Aof several pumps. The D controller has a fixed Dp value which is overridden, depending on the swivel angle. Reference operating point V is zero stroke. g min Setting value for Dp in zero stroke 27 bar. With the externally installed pressure relief valve (1) the nominal V pressure setting of all pumps connected g max to the system is adjusted to the same value. TSetting 2 T 3 range from 5 Sto M35 S bar. M T 1 T 2 T 3 Control volume at D: approx 1.9 L/min (static) at p 27 bar. Each pump can be individually unloaded from the system by a separately installed 2/2-way directional valve (2) and set to a standby position. DG The check valve in the service line (port A) is generally to be provided by the customer. The check valve in the control line (port D) is included in the delivery contents. X X The external valves are not included in the delivery contents. As a separate pressure relief valve (1) we recommend: DBD.6 (manual actuation), see RE 2542 Hydraulic V g min stop The hydraulic V g min stop opens the valve outlet to the case drain chamber when a minimum position is reached, damping the controller and reducing overshoot. This can cause a connection from high pressure or external control pressure via the controller and the hydraulic V g min stop to the case drain chamber. When ordering, state in plain text: Maximum operating pressure p in bar Drive speed n in rpm Maximum flow q V max in L/min A V g min Characteristic D Operating pressure p [bar] Schematic D A S M S M T 1 T 2 T 3 q V min Flow q V [L/min] q V max A External pressure V g min relief valve V g max D V g min D 1 (1) Maximum 7 bar (2) V g max V g max T 1 T 2 T 3 S M S M T 1 T 2 T 3 S M S M T 1 T 2 T 3

21 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 21/4

22 22/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 175 LRDRS ower controller with pressure control and load sensing (clockwise rotation) Before finalizing your design, request a binding installation drawing. Dimensions in mm. X T (T3) 279.5() ø (M) 269.5(S) (T2) 45 53(M) 6(T2) 43(S) X T 3 T T 1 A M S T 2 M1 x 1.5; 2 deep Thread for ring screw (additional thread on underside of case) W A Optical swivel angle indicator Detail W A Detail X M T 2 X S M S

23 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 23/4 Dimensions size 175 Before finalizing your design, request a binding installation drawing. Dimensions in mm. Drive shafts B2 arallel keyed shaft DIN 6885 A2 Splined shaft, DIN 548 W5x2x24x9g M16 1)2) ø6 ø M16 1)2) ø orts Designation ort for Standard Size 2) Maximum State pressure [bar] 3) A Service line SAE J518 4) 1 1/4 in 42 O Fastening threads DIN 13 M14 x 2; 22 deep S Suction line SAE J518 4) 3 in 3 O Fastening threads DIN 13 M16 x 2; 24 deep T 1 Drain line ISO ) M33 x 2; 19 deep 1 O 6) T 2 Drain line ISO ) M33 x 2; 19 deep 1 X 6) T 3 Drain line ISO ) M33 x 2; 19 deep 1 X 6) M Measuring control pressure ISO ) M14 x 1.5; 12 deep 42 X Measuring pressure A ISO ) M14 x 1.5; 12 deep 42 X M S Measuring suction pressure ISO ) M14 x 1.5; 12 deep 3 X Control pressure (ordering code B, C with external control ISO ) M14 x 1.5; 11.5 deep 42 O pressure supply) Control pressure (ordering code A without external control ISO ) M14 x 1.5; 11.5 deep 42 X pressure supply) CR ilot signal (only on CR) ISO 6149 M14 x 1.5; 11.5 deep 42 O D, D 1 ilot pressure (only on D) ISO 6149 M14 x 1.5; 11.5 deep 42 O H 5, H 6 ilot pressure (only on H5, H6) ISO 6149 M14 x 1.5; 11.5 deep 1 O X ilot signal ISO ) M14 x 1.5; 11.5 deep 42 O 1) Center bore according to DIN 332 (thread according to DIN 13) 2) Observe the general instructions on page 4 for the maximum tightening torques. 3) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings. 4) Metric fastening thread is a deviation from standard. 5) The spot face can be deeper than specified in the appropriate standard. 6) Depending on installation position, T1, T 2 or T 3 must be connected (see also installation instructions on pages 38 and 89). O = Must be connected (plugged on delivery) X = lugged (in normal operation)

24 24/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 175 (clockwise rotation) LR ower controller, fixed setting Before finalizing your design, request a binding installation drawing. Dimensions in mm. L4 ower controller, override electric, proportional CR Summation hp-control, override high-pressure-related (with stop) E2, E6 Stroke limiter, override electric, proportional (E2), two-point (E6) CR CR H5, H6 Stroke limiter, override pilot pressure, proportional DR ressure controller with one-sided deflection, fixed setting H H 1-6

25 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 25/4 Dimensions size 175 (clockwise rotation) DG ressure controller with one-sided deflection, hydraulic remote control D ressure controller with one-sided deflection, for parallel operation Before finalizing your design, request a binding installation drawing. Dimensions in mm D X X D 1 D

26 26/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 21 LRDRS - ower controller with pressure control and load sensing (clockwise rotation) X 116 Before finalizing your design, request a binding installation drawing. Dimensions in mm. T (T3) 293.6() ø (M) 282.5(S) X T 3 T T 1 A M S T 2 M12 x 1.75; 22 deep Thread for ring screw (additional thread on underside of case) W A Optical swivel angle indicator M T 2 S Detail W Detail X X M S

27 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 27/4 Dimensions size 21 Drive shafts B2 arallel keyed shaft DIN 6885 ø M16 1)2) 36 A2 Splined shaft, DIN 548 W5x2x24x9g ø M16 1)2) ø6 Before finalizing your design, request a binding installation drawing. Dimensions in mm orts Designation ort for Standard Size 2) Maximum State pressure [bar] 3) A Service line SAE J518 4) 1 1/2 in 42 O Fastening threads DIN 13 M16 x 2; 21 deep S Suction line SAE J518 4) 3 1/2 in 3 O Fastening threads DIN 13 M16 x 2; 24 deep T 1 Drain line ISO ) M42 x 2; 19.5 deep 1 O 6) T 2 Drain line ISO ) M42 x 2; 19.5 deep 1 X 6) T 3 Drain line ISO ) M42 x 2; 19.5 deep 1 X 6) M Measuring control pressure ISO ) M14 x 1.5; 12 deep 42 X Measuring pressure A ISO ) M14 x 1.5; 12 deep 42 X M S Measuring suction pressure ISO ) M14 x 1.5; 12 deep 3 X Control pressure (ordering code B, C with external control ISO ) M14 x 1.5; 11.5 deep 42 O pressure supply) Control pressure (ordering code A without external control ISO ) M14 x 1.5; 11.5 deep 42 X pressure supply) CR ilot signal (only on CR) ISO 6149 M14 x 1.5; 11.5 deep 42 O D, D 1 ilot pressure (only on D) ISO 6149 M14 x 1.5; 11.5 deep 42 O H 5, H 6 ilot pressure (only on H5, H6) ISO 6149 M14 x 1.5; 11.5 deep 1 O X ilot signal ISO ) M14 x 1.5; 11.5 deep 42 O 1) Center bore according to DIN 332 (thread according to DIN 13) 2) Observe the general instructions on page 4 for the maximum tightening torques. 3) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings. 4) Metric fastening thread is a deviation from standard. 5) The spot face can be deeper than specified in the appropriate standard. 6) Depending on installation position, T1, T 2 or T 3 must be connected (see also installation instructions on pages 38 and 39). O = Must be connected (plugged on delivery) X = lugged (in normal operation)

28 28/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 21 (clockwise rotation) LR ower controller, fixed setting Before finalizing your design, request a binding installation drawing. Dimensions in mm. L4 ower controller, override electric, proportional CR Summation hp-control, override high-pressure-related (with stop) E2, E6 Stroke limiter, override electric, proportional (E2), two-point (E6) CR CR H5, H6 Stroke limiter, override pilot pressure, proportional DR ressure controller with one-sided deflection, fixed setting H H 5-6

29 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 29/4 Dimensions size 21 (clockwise rotation) DG ressure controller with one-sided deflection, hydraulic remote control D ressure controller with one-sided deflection, for parallel operation Before finalizing your design, request a binding installation drawing. Dimensions in mm D X X D 1 D

30 3/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 28 LRDRS - ower controller with pressure control and load sensing (clockwise rotation) X 122 Before finalizing your design, request a binding installation drawing. Dimensions in mm. T (T3) 329() ø X T 3 T M12 x 1.75; 22 deep Thread for ring screw (additional thread on underside of case) T 1 A M S W (M) 324(S) A T 2 43(T2) Optical swivel angle indicator Detail W Detail X M T 2 S X M S

31 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 31/4 Dimensions size 28 Drive shafts B4 arallel keyed shaft DIN 6885 ø A4 Splined shaft, DIN 548 W6x2x28x9g ø9.4 M2 x 2.5 1)2) ø7 15 M2 x 2.5 1)2) Before finalizing your design, request a binding installation drawing. Dimensions in mm. ø9.4 ø orts Designation ort for Standard Size 2) Maximum State pressure [bar] 3) A Service line SAE J518 4) 1 1/2 in 42 O Fastening threads DIN 13 M16 x 2; 24 deep S Suction line SAE J518 4) 3 1/2 in 3 O Fastening threads DIN 13 M16 x 2; 24 deep T 1 Drain line ISO ) M42 x 2; 19.5 deep 1 O 6) T 2 Drain line ISO ) M42 x 2; 19.5 deep 1 X 6) T 3 Drain line ISO ) M42 x 2; 19.5 deep 1 X 6) M Measuring control pressure ISO ) M14 x 1.5; 11.5 deep 42 X Measuring pressure A ISO ) M14 x 1.5; 11.5 deep 42 X M S Measuring suction pressure ISO ) M14 x 1.5; 12 deep 3 X Control pressure (ordering code B, C with external control ISO ) M14 x 1.5; 11.5 deep 42 O pressure supply) Control pressure (ordering code A without external control ISO ) M18 x 1.5; 14.5 deep 42 X pressure supply) CR ilot signal (only on CR) ISO 6149 M14 x 1.5; 11.5 deep 42 O D, D 1 ilot signal (only on D) ISO 6149 M14 x 1.5; 11.5 deep 42 O H 5, H 6 ilot signal (only on H5, H6) ISO 6149 M14 x 1.5; 11.5 deep 1 O X ilot signal ISO ) M14 x 1.5; 11.5 deep 42 O 1) Center bore according to DIN 332 (thread according to DIN 13) 2) Observe the general instructions on page 4 for the maximum tightening torques. 3) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings. 4) Metric fastening thread is a deviation from standard. 5) The spot face can be deeper than specified in the appropriate standard. 6) Depending on installation position, T1, T 2 or T 3 must be connected (see also installation instructions on pages 38 and 39). O = Must be connected (plugged on delivery) X = lugged (in normal operation)

32 32/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Dimensions size 28 (clockwise rotation) LR ower controller, fixed setting Before finalizing your design, request a binding installation drawing. Dimensions in mm. L4 ower controller, override electric, proportional CR Summation hp-control, override high-pressure-related (with stop) E2, E6 Stroke limiter, override electric, proportional (E2), two-point (E6) CR CR H5, H6 Stroke limiter, override pilot pressure, proportional DR ressure controller with one-sided deflection, fixed setting H H 5-6

33 RE 928/5.12 A15VSO Series 1 Bosch Rexroth AG 33/4 Dimensions size 28 (clockwise rotation) DG ressure controller with one-sided deflection, hydraulic remote control D ressure controller with one-sided deflection, for parallel operation Before finalizing your design, request a binding installation drawing. Dimensions in mm D X X D 1 D

34 34/4 Bosch Rexroth AG A15VSO Series 1 RE 928/5.12 Through drive dimensions Before finalizing your design, request a binding installation drawing. Dimensions in mm. Flange SAE J744 Coupling for splined shaft 1) Mounting variant Diameter Symbol 2) Designation Diameter Designation repared for through drive, with pressure-proof plugged cover l l l U 82-2 (A) A1 5/8 in 9T 16/32D S2 l l m A1S2 A2 5/8 in 9T 16/32D S2 m m m A2S (B) B3 7/8 in 13T 16/32D S4 m m m B3S4 1 in 15T 16/32D S5 m m m B3S (C) C3 1 1/4 in 14T 12/24D S7 m m m C3S7 1 1/2 in 17T 12/24D S9 m m m C3S (D) D4 W45x2x21x9g A1 m m m D4A1 W5x2x24x9g A2 m m m D4A (E) E4 W5x2x24x9g A2 l l l E4A2 W6x2x28x9g A4 m m l E4A4 Flange, ISO (metric) Coupling for splined shaft 1) Mounting variant Diameter Symbol 2) Designation Diameter Designation K1 3/4 in 11T 16/32D S3 m m m K1S3 K2 3/4 in 11T 16/32D S3 l m m K2S3 K5 3/4 in 11T 16/32D S3 l l m K5S3 1-2 L5 7/8 in 13T 16/32D S4 l l m L5S /4 in 14T 12/24D S7 m m m 4S R4 1 1/2 in 17T 12/24D S9 l l m R4S9 1 3/4 in 13T 8/16 D T1 m m m R4T M4 1 in 15T 16/32D S5 m m m M4S5 W32x2x14x9g Z7 m m m M4Z N4 W4x2x18x9g Z9 m m m N4Z (E) E4A4 A5 O-ring 4) NG A1 A2 A4 A5 3) M2 x 2.5; 3 tief M2 x 2.5; 3 tief M2 x 2.5; 3 tief ø A2 A4 A1 (to mounting flange) 1) Coupling for splined shaft according to ANSI B92.1a (3 pressure angle, flat root, side fit, tolerance class 5) or to DIN 548 2) Mounting drillings pattern viewed on through drive with control at top. 3) Thread according to DIN 13, observe the general instructions on page 4 for the maximum tightening torques. 4) O-ring included in the delivery contents.