PARKER CALZONI Radial Piston Motor Type MRD, MRDE, MRV, MRVE

Transcription

1 PRKER CLZONI Radial Piston Motor ype MRD, MRDE, MRV, MRVE RCOe /.

2 BLE OF CONENS MOOR YPE MRD MRDE MRV MRVE CONENS PG. BLE OF CONENS GENERL CHRCERISICS FUNCIONL DESCRIPION 6 ECHNICL D 7 FLUID SELECION 8 FLUSHING PROCEDURE 9 PILOING PROCEDURE OPERING DIGRM MOOR YPE MRD OPERING DIGRM MOOR YPE MRDE OPERING DIGRM MOOR YPE MRD OPERING DIGRM MOOR YPE MRV OPERING DIGRM MOOR YPE MRDE OPERING DIGRM MOOR YPE MRD 7 MRV 7 6 OPERING DIGRM MOOR YPE MRDE 8 MRVE 8 7 OPERING DIGRM MOOR YPE MRD MRV 8 OPERING DIGRM MOOR YPE MRVE 9 OPERING DIGRM MOOR YPE MRD 8 MRV 8 OPERING DIGRM MOOR YPE MRDE MRVE OPERING DIGRM MOOR YPE MRD 8 MRV 8 OPERING DIGRM MOOR YPE MRDE MRVE OPERING DIGRM MOOR YPE MRD MRV OPERING DIGRM MOOR YPE MRDE MRVE OPERING DIGRM MOOR YPE MRD 7 MRV 7 6 OPERING DIGRM MOOR YPE MRDE 8 MRVE 8 7 BERING LIFE 8 MOOR DIMENSIONS MRV 9 MOOR DIMENSIONS MRD, MRDE, MRV, MRVE SHF END DIMENSIONS COMPONENS FOR SPEED CONROL ELECRONIC DISPLCEMEN REGULOR RCE 68 ELECRONIC DISPLCEMEN RNSDUCER 9 ELECRONIC PRESSURE CONROL RPC PIPE CONNECION FLNGES COUPLINGS KEY DPERS HOLDING BRKE UNI DIMENSIONS ECHNICL D INSLLION NOES 6 ORDERING CODE 7 SLES ND SERVICE LOCIONS WORLDWIDE 8 RCOe /.

3 GENERL CHRCERISICS MOOR YPE MRD MRDE MRV MRVE GENERL CHRCERISICS B x y B(Y B (x (x CONSRUCION YPE MOUNING CONNECION MOUNING POSIION BERING LIFE Radial piston motor with dual displacement MRD MRDE and variable displacement MRV MRVE MRD; MRDE; MRV; MRVE Front flange mounting Connection flange (See page ) ny (please note the installation notes on page ) See page 6 DIRECION OF ROION Clockwise, anticlockwise reversible FLUID FLUID EMPERURE RNGE HLP mineral oils to DIN part ; Fluid type HFB, HFC and Biofluids on enquiry. FPM seals are required with phosphorous acidester (HFD) From to + 8 C VISCOSIY RNGE ) FLUID CLENLINESS From 8 to mm /s: Recommended operating range to (see fluid selection on page 8) Maximum permissible degree of contamination of fluid NS 68 Class 9. We therefore recommend a filter with a minimum retention rate of ß > 7. o ensure a long life we recommend class 8 to NS 68. his can be achieved with a filter, with a minimum retention rate of ß >. ) For different valves of viscosity please contact PRKER Calzoni RCOe /.

4 FUNCIONL DESCRIPION MOOR YPE MRD MRDE MRV MRVE a 6 B x y 6 B(y) B (x) (x) MRDMRDE FUNCIONL DESCRIPION IMING SYSEM EFFICIENCY he outstanding performance of the motor is the result of an original and patented design. he principle is to transmit force to the driving shaft ( and 6) by means of a pressurized column of oil (a) without any connecting rods, pistons, pads and pins. his oil column is contained by a telescopic cylinder () with a mechanical connection at the lips at each end, which seal against the spherical surfaces () of the cylinderhead () and the spherical surface of the rotating shaft (). hese lips retain their circular cross section when stressed by the pressure so there is no alteration in the sealing geometry. he careful selection of materials and optimized design has minimized both friction and leakage. nother advantage of this design stems from the elimination of any connecting rods, the cylinder can only expand and retract linearly so there are no transverse components of the thrust. his means no oval wear on the moving parts and no side forces on the cylinder joints. Dual displacement is accomplished by having the eccentric shaft cam free to move radially changing its eccentricity. In this way the displacement can be choosen amongst many different values. he radial motion is controlled by means of hydraulic cylinders () located in the drive shaft (6). he feeding of the displacement cylinders is accomplished by means of the rotating intake (7). he displacement can be changed even while rotating under full load. iming is accomplished by means of a rotary valve (8) driven by the rotary valve driving shaft (9) that it is connected to the rotating eccentric shaft. he rotary valve rotates between the rotating intake (7) and the reaction ring () which are fixed to the rotary valve housing. his timing system is also of a patented design being pressure balanced and selfcompensating for thermal expansion. he advantages of this type of timing system, combined with a revolutionary propulsion system, produces a motor with extremely high values of mechanical and volumetric efficiency. he torque output is smooth even at very low speed under high pressure, and the motor offers high performance starting under load. RCOe /.

5 FUNCIONL DESCRIPION MOOR YPE MRD MRDE MRV MRVE a 6 B x y 6 B(y) B (x) (x) MRVMRVE FUNCIONL DESCRIPION IMING SYSEM EFFICIENCY he outstanding performance of the motor is the result of an original and patented design. he principle is to transmit force to the driving shaft ( and 6) by means of a pressurized column of oil (a) without any connecting rods, pistons, pads and pins. his oil column is contained by a telescopic cylinder () with a mechanical connection at the lips at each end, which seal against the spherical surfaces () of the cylinderhead () and the spherical surface of the rotating shaft (). hese lips retain their circular cross section when stressed by the pressure so there is no alteration in the sealing geometry. he careful selection of materials and optimized design has minimized both friction and leakage. nother advantage of this design stems from the elimination of any connecting rods, the cylinder can only expand and retract linearly so there are no transverse components of the thrust. his means no oval wear on the moving parts and no side forces on the cylinder joints. Dual displacement is accomplished by having the eccentric shaft cam free to move radially changing its eccentricity. In this way the displacement can be choosen amongst many different values. he radial motion is controlled by means of hydraulic cylinders () and valve () located in the drive shaft (6), this valve allows the step by step movement of the cylinder inside the main shaft, so it is possible to change the displacement. he feeding of the displacement cylinders is accomplished by means of the rotating intake (7). he displacement can be changed even while rotating under full load. iming is accomplished by means of a rotary valve (8) driven by the rotary valve driving shaft (9) that it is connected to the rotating eccentric shaft. he rotary valve rotates between the rotating intake (7) and the reaction ring () which are fixed to the rotary valve housing. his timing system is also of a patented design being pressure balanced and selfcompensating for thermal expansion. he advantages of this type of timing system, combined with a revolutionary propulsion system, produces a motor with extremely high values of mechanical and volumetric efficiency. he torque output is smooth even at very low speed under high pressure, and the motor offers high performance starting under load. RCOe /.

6 FUNCIONL DESCRIPION MOOR YPE MRD MRDE MRV MRVE MRV FUNCIONL DESCRIPION he estreme versatility of this motor is because of two simple but ingenious designs combined in one machine. he rotation of the shaft is by the same original and patended mechanism as the MR motor but, in addition, the MRV has an arrangement of internal cylinders to actually change the motor displacement, even while turning under full load. he principle of the rotation mechanism is to transmit the effort from the stator to the eccentric part of the shaft by means of a pressurized column of oil. his oil column is contained by a telescopic cylinder with a mechanical connection only at the lips at each end which seal against the spherical surfaces of the stator and the rotor. hese lips retain their circular cross section when stressed by the pressure so there is no alteration in the sealing geometry. he particular selection of materials and optimization of design has minimized both the friction and the leakage. nother advantage of this design stems from the elimination of any connecting rods, the cylinder can only expand and retract linearly so there are no transverse components of the thrust. his means no oval wear on the moving parts and no side forces on the cylinder joints. consequence of this novel design is a significant reduction in weight and overall size compared with other motors of the same basic capacity. In the MRV motor the eccentric part of the shaft is free to move radially. he radial motion is controlled by two lateral hydraulic cylinders which are an integral part of the shaft. s the eccentricity changes so does the stroke of the telescopic cylinders and hence the displacement. he variation is stepless between full eccentricity (maximum displacement) and full concentricy. It is possible to insert spacers in the lateral cylinders to limit the maximum and minimum displacements and so tailor the motor to the exact requirements of any application. he facility of variable displacement can be used with hydraulic regulation valves to create a variety of control systems ex. constant pressure operation, constant power operation, two speed operation. When used with electronic regulators even more control system are possible ex. high efficiency speed control, high efficiency ring main systems, high efficiency torque control etc. In common with the MR range, this motor has a patented distributor valve being pressure balanced and self compensating for thermal expansion. he advantages of this type of valve coupled with a revolutionary cylinder arrangement produce a motor with extremely high values of mechanical and volumetric efficiency. he torque output is smooth even at very low speeds and the motor gives a high performance starting under load. 6 RCOe /.

7 ECHNICL D MOOR YPE MRD MRDE MRV MRVE Siz ize Motor version Displace isplace ment Momen oment heore heore inertia of tical rotating specific parts torquea Min in. start. torque / heoretical torque M aximum Pressure e input c ont. int. p eak +B * Drain S peed rang e without flushing with Maximu m output power flushing without V J % p p p p p n n P P m with Weigh eight cm kg cm Nm/bar bar bar bar bar bar giri/min giri/min kw kw kg M R D Min., 8,, Max., 6,, Min., 8 8,, Max., 6 9,8 7, M R V Min., 8,, Max., 6 9,8 7, M R D Min. 7, 6 9, Max. 76, 9 8,, Min. 8, 9,67 6, ( bar,6,6 with "F" Max., 8, 7,9 9,, 77 9 shaft Min. 6, 7,89 9, 6 seal),, 6 69 Max. 89, 6 8, 8,8 9,, M R V 8 8 Min. 9, 7 6,99, 8,, 8 Max. 79, 97,7, 9,, 7 9 Min. 97, 8,, 9,,8 8 Max., 7, 7,7 9,8,7 7 Min., 9, 6,98,, 8 Max. 6967, 76,6,9 9,8, M R D E Min. 66, 8,,6 Max., 6,, Min. 8, 9 8,, Max. 97, 9 9,8 7, Min. 7, 9,67, Max. 8, 8,, M R D E Min. 6, 9 9,67 9,8,, 8 ( bar Max. 69,,,8 9,8,8 77 with "F" Min. 697, 7,89 6,6,, 6 7 shaft seal) Max. 9, 8,, 9,, M R V E Min., 6 6,99,7,, 8 Max., 7 97,7 9, 9,, 9 Min. 8,,,,, 6 Max.,, 86, 9,8,6 9 8 Min. 7, 9,,6,, 8 Max. 86, 76,6,9 9,9, 7 86 (*) Please consult PRKER Calzoni 7 RCOe /.

8 FLUID SELECION MOOR YPE MRD MRDE MRV MRVE EXMPLE: t a certain ambient temperature, the operating temperature in the circuit is C. In the optimum operating viscosity range (v rec ; shaded section), this corresponds to viscosity grades VG 6 or VG 68; VG 68 should be selected. IMPORN: he drain oil temperature is influenced by pressure and speed and is usually higher than the circuit temperature or the tank temperature. t no point in the system, however, may the temperature be higher than 8 C. If the optimum conditions cannot be met due to the extreme operating parameters or high ambient temperature, we always recommend flushing the motor case in order to operate within the viscosity limits. Should it be absolutely necessary to use a viscosity beyond the recommended range, you should first contact PRKER Calzoni for confirmation. viscosity ν (mm /s) emperature t in C Oil temperature range ν REC GENERL NOES OPERING VISCOSIY RNGE LIMIS OF VISCOSIY RNGE CHOOSING HE YPE OF FLUID CCORDING O HE OPERING EMPERURE FILRION CSE DRIN PRESSURE "FPM" SELS More detailed information regarding the choice of the fluid can be requested to PRKER Calzoni. When operating with HF pressure fluids or biodegradable pressure fluids possible limitations of the technical data must be taken into consideration, please see information sheet CS 8, or consult PRKER Calzoni. he viscosity, quality and cleanliness of operating fluids are decisive factors in determining the reliability, performance and lifetime of an hydraulic component. he maximum lifetime and performance are achieved within the recommended viscosity range. For applications that go beyond this range, we recommend to contact. ν rec. = recommended operating viscosity... mm /s his viscosity refers to the temperature of the fluid entering the motor, and at the same time to the temperature inside the motor housing (case temperature). We recommend to select the viscosity of the fluid based on the maximum operating temperature, to remain within the recommended viscosity range. o reach the value of maximum continuous power the operating viscosity should be within the recommended viscosity range of cst. For limit conditions the following is valid: ν min.abs. = mm /s in emergency, short term ν min. ν max. = 8 mm /s for continuous operation at reduced performances = mm /s short term upon cold start he operating temperature of the motor is defined as the greater temperature between that of the incoming fluid and that of the fluid inside the motor housing (case temperature).we recommend that you choose the viscosity of the fluid based on the maximum operating temperature, to remain within the recommended viscosity range (see diagram). We recommend that the higher viscosity grade must be selected in each case. he motor life also depends on the fluid filtration. t least it must correspond to one of the following cleanliness. class 9 according to NS 68 class 6 according to SE, SM, I class 8/ according to ISO/DIS 6 In order to assure a longer life a cleanliness class 8 to NS 68 is recommended, achieved with a filter of β =. In case the above mentioned classes can not be achieved, please consult us. he lower the speed and the case drain pressure, the longer the life of the shaft seal. he maximum permissible housing pressure is p max = bar If the case drain pressure is higher than bar it is possible to use a special bar shaft seal (see page, Seals, Code"F"). In case of operating conditions with high oil temperature or high ambient temperature, we recommend to use "FPM" seals (see page, Seals, Code "V"). hese "FPM" seals should be used with HFD fluids. 8 RCOe /.

9 FLUSHING PROCEDURE MOOR YPE MRD MRDE MRV MRVE P B P in emp. t B P in P in B emp. t ) VFC Flushing valve P B R FLUSHING CIRCUI (MONODIRECIONL ROION) FLUSHING CIRCUI (BIDIRECIONL ROION) ) Please consult us. FLUSHING NOE: NOE: he motor case must be flushed when the continuous operating performances of the motor are inside the "Continuous operating area with flushing" (see Operating Diagram from page to page ), in order to assure the minimum oil viscosity inside the motor case of mm /s (see page 8 Fluid Selection). he flushing can be necessary also when the operating performances are outside the "Continuous operating area with flushing", but the system is not able to assure the minimum viscosity conditions requested by the motor as specified at page 8. he oil temperature inside the motor case is obtainable by adding C to the motor surface temperature (t, see figures). With the standard shaft seal the maximum drain case pressure is bar. For the selection of the restrictor, please consult us. FLOW YPE MOOR VERSION FLUSHING FLOW MRD MRDE, Q = 6 l/min MRD MRDE MRV MRD MRDE MRV MRVE MRD MRDE MRV MRVE MRD MRDE MRV MRVE, Q = 8 l/min 7, 8,, Q = l/min 8, Q = l/min 8,,,,7,8 Q = l/min 9 RCOe /.

10 PILOING PROCEDURE MOOR YPE MRD MRDE MRV MRVE INERNL PILOING In order to change the motor displacement, see operating diagram for requested minimun pressure. Internal piloting wo displacement valve feeded by motor pressure Internal piloting Solenoid operated displacement control valve feeded by motor pressure B X Y B X Y EXERNL PILOING External piloting pressure requested is 6 bars. External piloting wo displacement valve feeded by motor pressure External piloting Solenoid operated displacement control valve feeded by motor pressure B X Y B X Y RCOe /.

11 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD Kw Kw Kw Kw Kw Kw Kw Kw 7 Kw Kw bar cm bar orque [Nm] 8 6 bar bar bar bar l/min l/min 6 l/min 8 l/min l/min l/min l/min 6 l/min 8 l/min l/min l/min MRD cm Kw Kw Kw 6 Kw Kw Kw 7 Kw Kw Kw bar bar orque [Nm] bar bar bar L/min L/min 6 L/min 8 L/min L/min L/min L/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded), (cm /rev.), (cm /rev.) 6 8 Min. required boost Pressure with pump operation, (cm /rev.), (cm /rev.) 6 8 RCOe /.

12 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE cm Kw 8 Kw Kw Kw 6 Kw Kw 9 Kw bar 97.% h t=9.% bar orque [Nm] % hv=99% 9% 9% 89% bar bar 86% bar 78% l/min 6 l/min l/min l/min 6 l/min 9 l/min l/min MRDE 66 cm Kw 6 7 Kw Kw 8 Kw Kw Kw 7 Kw Kw bar bar orque [Nm] bar bar L/min L/min 7 L/min 9 L/min L/min L/min 6 L/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni 6 7 Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded), (cm /rev.) 66, (cm /rev.) 6 8 Min. required boost Pressure with pump operation, (cm /rev.) , (cm /rev.) 6 8 RCOe /.

13 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD cm orque [Nm] Kw Kw 6 Kw Kw 9 Kw 6 Kw 6 Kw 6 Kw 7 Kw bar bar bar bar bar bar l/min l/min 6 l/min 9 l/min l/min l/min 8 l/min l/min l/min MRD 6 cm Kw Kw 6 6 Kw Kw 9 Kw 6 Kw Kw 9 Kw Kw bar bar orque [Nm] 7 6 bar bar bar L/min L/min 8 L/min L/min L/min 6 L/min 8 L/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzonii Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded), (cm /rev.),8 (cm /rev.) Min. required boost Pressure with pump operation, (cm /rev.),8 (cm /rev.) RCOe /.

14 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRV cm orque [Nm] Kw Kw 6 Kw Kw 9 Kw 6 Kw 6 Kw 6 Kw 7 Kw bar bar bar bar bar bar l/min l/min 6 l/min 9 l/min l/min l/min 8 l/min l/min l/min MRV cm 6 Kw 6 9 Kw Kw 9 Kw Kw 7 Kw Kw bar Kw bar orque [Nm] 9% 96% 97% hv=98% ht=8% 8% bar bar 8% bar 9 l/min l/min l/min 8 l/min 78 l/min 9 l/min l/min 8% 8% 79% Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded), (cm /rev.) 6 8 Min. required boost Pressure with pump operation, (cm /rev.) 6 8, (cm /rev.), (cm /rev.) RCOe /.

15 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE 98 cm MRDE 9 cm orque [Nm] orque [Nm] Kw l/min l/min 6 l/min 9 l/min l/min l/min Kw Kw Kw Kw 6 Kw 6 Kw Kw Kw 9 Kw 6 Kw 6 Kw Kw Kw 8 Kw 6 Kw 7 Kw bar bar bar bar bar 8 l/min l/min l/min 7 l/min 6 bar bar bar bar L/min L/min 7 L/min L/min L/min L/min 8 L/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni 6 Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 97,9 (cm /rev.) 6 8 Min. required boost Pressure with pump operation 97,9 (cm /rev.) 8,9 (cm /rev.) 8,9 (cm /rev.) RCOe /.

16 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD 7 MRV 7 77 cm orque [Nm] Kw 8 Kw 8 Kw 7 Kw 6 Kw 6 Kw 6 Kw 76 Kw 86 Kw 97 Kw bar bar bar bar bar 6 l/min l/min 8 l/min bar l/min 6 l/min l/min l/min 8 l/min l/min MRD 7 MRV 7 8 cm 8 Kw 6 Kw Kw 6 Kw Kw 6 Kw Kw Kw bar bar orque [Nm] 6 bar bar bar l/min l/min 8 l/min l/min l/min l/min 7 l/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 76,9 (cm /rev.) 7,6 (cm /rev.) 6 7 Min. required boost Pressure with pump operation 76,9 (cm /rev.) 7,6 (cm /rev.) RCOe /.

17 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE 8 MRVE 8 8 cm orque [Nm] Kw Kw Kw Kw Kw 6 Kw 7 Kw 8 Kw 9 Kw bar bar bar bar MRDE 8 MRVE 8 7 cm orque [Nm] l/min 6 l/min l/min l/min 8 l/min l/min 6 l/min l/min l/min Kw 6 Kw Kw 6 Kw Kw Kw 7 Kw Kw bar bar bar bar bar l/min l/min 8 l/min l/min l/min 6 l/min 9 l/min Min. pilot pressure [bar] 7 6 Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 8, (cm /rev.) 7, (cm /rev.) 6 6 Min. required boost Pressure with pump operation 8, (cm /rev.) 7, (cm /rev.) RCOe /.

18 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD MRV 6 cm Kw Kw Kw Kw 66 Kw 77 Kw 9 Kw Kw 9 Kw bar bar orque [Nm] bar bar bar l/min l/min bar l/min l/min l/min l/min l/min l/min MRD MRV 8 cm 6 Kw Kw 7 Kw Kw 9 Kw Kw 9 Kw Kw bar bar orque [Nm] 8 6 bar bar bar l/min l/min 8 l/min l/min l/min 7 l/min l/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded),8 (cm /rev.) Min. required boost Pressure with pump operation,8 (cm /rev.) 8, (cm /rev.) 6 8, (cm /rev.) RCOe /.

19 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE MRVE 7 cm orque [Nm] Kw Kw Kw Kw 66 Kw 77 Kw 8 Kw 9 Kw Kw bar bar bar bar MRDE MRVE 6 cm orque [Nm] l/min l/min l/min l/min l/min l/min l/min l/min Kw Kw Kw 8 Kw 7 Kw Kw Kw Kw 8 bar bar bar bar bar l/min 7 l/min l/min l/min 7 l/min l/min l/min Min. pilot pressure [bar] 6 Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 69, (cm /rev.) (cm /rev.) 6,9 (cm /rev.) Min. required boost Pressure with pump operation 69, 6,9 (cm /rev.) 9 RCOe /.

20 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD 8 MRV 8 8 cm Kw Kw 9 Kw 7 Kw 88 Kw Kw Kw 9 Kw 7 Kw bar bar orque [Nm] 6 bar bar bar MRD 8 MRV 8 6 cm orque [Nm] l/min 6 l/min l/min 8 l/min 8 Kw 8 Kw 7 Kw 6 Kw Kw 8 Kw 6 Kw bar l/min l/min 6 l/min l/min Kw bar bar bar bar bar l/min 7 l/min l/min l/min 8 l/min l/min L/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult DENISON Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 89,6 (cm /rev.) 6, (cm /rev.) Min. required boost Pressure with pump operation 89,6 (cm /rev.) 6, (cm /rev.) RCOe /.

21 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE MRVE 9 cm orque [Nm] Kw Kw 6 Kw 8 Kw Kw 6 Kw Kw 8 Kw bar bar bar bar bar l/min 6 l/min l/min 8 l/min l/min l/min 6 l/min l/min 8 l/min MRDE MRVE Kw 8 Kw 7 Kw 6 Kw Kw 9 Kw 66 Kw 7 Kw 697 cm orque [Nm] bar bar bar bar l/min 7 l/min l/min l/min 8 l/min l/min 7 l/min Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) 9, (cm /rev.) 697, (cm /rev.) Min. required boost Pressure with pump operation 9, (cm /rev.) 697, (cm /rev.) RCOe /.

22 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD 8 MRV 8 79 cm MRD 8 MRV 8 9 cm orque [Nm] orque [Nm] Kw Kw 6 Kw 8 Kw Kw 7 Kw 9 Kw bar bar bar bar bar bar l/min 8 l/min 6 l/min l/min l/min l/min 8 l/min l/min Kw Kw Kw Kw 9 Kw 66 Kw 7 Kw 7 Kw 8 Kw bar bar bar bar bar 9 Kw Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni l/min 8 l/min l/min 6 l/min l/min l/min 7 l/min Idling pressure [bar] Boost Pressure [bar] 6 8 Min. required pressure difference Dp with idling speed (shaft unloaded) Min. required boost Pressure with pump operation (cm /rev.) 79(cm /rev.) 9,7 (cm /rev.) 9,7 (cm /rev.) RCOe /.

23 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE MRVE cm orque [Nm] Kw Kw l/min 8 l/min 6 Kw 8 Kw Kw Kw Kw 6 Kw 9 Kw bar bar bar bar bar 6 l/min l/min l/min l/min 8 l/min l/min MRDE MRVE cm Kw Kw Kw Kw 6 Kw 7 Kw 78 Kw bar bar 8 Kw orque [Nm] bar bar Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni l/min 8 l/min l/min l/min 9 l/min l/min 8 l/min Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded),7 (cm /rev.) 8 6 Min. required boost Pressure with pump operation,7 (cm /rev.) 8 6,8 (cm /rev.) 6,8 (cm /rev.) 6 RCOe /.

24 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD MRV cm orque [Nm] Kw 6 Kw 8 Kw Kw Kw Kw 6 Kw 87 Kw Kw bar bar bar bar bar MRD MRV 98 cm orque [Nm] 7 6 l/min l/min Kw Kw Kw bar l/min l/min l/min l/min 6 l/min 7 l/min Kw 6 Kw 7 Kw 78 Kw 8 Kw bar bar bar bar bar Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) 6 8 Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni 7 l/min l/min l/min 9 l/min l/min 9 l/min 6 l/min Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded) Min. required boost Pressure with pump operation,7 (cm /rev.),7 (cm /rev.) 97,8 (cm /rev.) 97,8 (cm /rev.) RCOe /.

25 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE MRVE cm orque [Nm] 8 6 Kw 6 Kw 8 Kw Kw Kw Kw 6 Kw 87 Kw Kw bar bar bar 8 6 bar MRDE MRVE 8 cm orque [Nm] bar l/min l/min l/min l/min l/min l/min 6 l/min 7 l/min 8 l/min Kw 9 Kw Kw 6 Kw 7 Kw 8 Kw 9 Kw Kw bar bar bar bar Min. pilot pressure [bar] l/min l/min 7 l/min l/min 8 l/min l/min l/min Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) 6 8 Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni Idling pressure [bar] Boost Pressure [bar] Min. required pressure difference Dp with idling speed (shaft unloaded), (cm /rev.) 8 6 Min. required boost Pressure with pump operation, (cm /rev.) 8 6 8, (cm /rev.) 8, (cm /rev.) RCOe /.

26 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRD 7 MRV cm orque [Nm] Kw 7 Kw 97 Kw Kw 6 Kw 7 Kw Kw Kw Kw bar bar bar bar bar 6 bar l/min l/min l/min l/min l/min l/min 6 l/min 7 l/min 8 l/min MRD 7 MRV 7 cm Kw 9 Kw 66 Kw 8 Kw 9 Kw Kw Kw Kw bar bar orque [Nm] 6 bar bar bar Min. pilot pressure [bar] Min.pilot pressure for displacement changing in autopiloting (pilot pressure derived from pressure line) Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni 7 l/min l/min 9 l/min l/min l/min 8 l/min l/min Perdite di carico in bar Pressione di alim. in bar Min. required pressure difference Dp with idling speed (shaft unloaded) 6967, 6967, (cm /rev.) (cm /rev.), (cm /rev.) 8 6 Min. required boost Pressure with pump operation, (cm /rev.) RCOe /.

27 OPERING DIGRM MOOR YPE MRD MRDE MRV MRVE OPERING DIGRM (average values) measured at ν = 6 mm /s; t = C; p = bar outlet Output power Intermittent operating area Continuous operating area with flushing Continuous operating area Inlet pressure ηt otal efficiency ηv Volumeter efficiency MRDE 8 MRVE 8 86 cm orque [Nm] 8 6 Kw 6 Kw 8 Kw Kw Kw Kw 6 Kw 87 Kw Kw bar bar bar 8 6 bar MRDE 8 MRVE 8 7 cm orque [Nm] bar l/min l/min l/min l/min l/min l/min 6 l/min 7 l/min 8 l/min Kw 8 Kw 6 Kw 8 Kw 9 Kw 7 Kw Kw Kw bar bar bar bar 8 l/min l/min l/min 7 l/min l/min l/min 9 l/min 7 7 Min. pressione di pilotaggio in bar Min. required boost Pressure with pump operation 86, (cm /rev.) 86, (cm /rev.) 7, (cm /rev.) 7, (cm /rev.) 6 8 Valid for back pressure up to bar, drain pressure up to bar. For other working conditions please consult PRKER Calzoni RCOe /.

28 BERING LIFE MOOR YPE MRD MRDE MRV MRVE BERING LIFE L h L h Motor speed [rpm] Load coefficent C p = Load coefficent K = Sevice life coefficent for standard bearing p = operating pressure in bar L h is the theoretically service life value normally reached or exceeded by the 9% of the bearings. % of the bearings reach the value L h = times L h. M OOR YPE K M OOR YP E K M OOR YP E K M RD M RDE 8 M RV 88 M RDE M RVE 8 M RDE 7 M RD M RD 8 9 M RVE 7 M RV M RV 8 9 M RD 7 88 M RDE M RDE 8 M RV 7 88 M RD 7 8 M RVE 8 M RDE 8 68 M RV 7 8 M RD 8 M RVE 8 68 M RDE 8 9 M RV 8 M RVE 8 9 M RDE 9 M RD M RVE 9 M RV M RD 88 8 RCOe /.

29 MOOR DIMENSIONS MRV MOOR YPE MRD MRDE MRV MRVE Splined shaft with flank contact (for dimension see page ) Ordering code "N" (for further shaft ends see page ) Case drain port BSP threads to ISO 8/ On request the port flange can be rotated by 6 Port / BSP threads to ISO 8/ for pressure reading. 8 b a fd h8 fd Ø 9 h8 Ø 66 Ø 9 Ø N HOLES L L7 L8 L9 L6 B f D B L9 L8 L L L L L L7 L L MOO OOR YPE L L L L L L6 L7 L8 L9 L L L L L L L 6 L 7 L 8 L 9 L M RV , 6, 7, 7, 8 9, 6, 76 7 MOO OOR YPE B B B B Ø D Ø D Ø D Ø D 8 h8 * Ø D Ø D6 D7 D8 D9 Ø D Ø D Ø D α β γ M RV M 8 G / 8, 9 G / fd6 B B B fd9 N 9 HOLES D7 / L6 L L fd L P fd fd CEOP. D8 D8 Flange for interchangeability from motor type MRV to motor type MR CODE N 86 L g L 9 RCOe /.

30 MOOR DIMENSIONS MOOR YPE MRD MRDE MRV MRVE g L L6 L6 Splined shaft with flank contact (for dimension see page ) Ordering code "N" (for further shaft ends see page ) Case drain port BSP threads to ISO 8/ On request the port flange can be rotated by 7 (For MRD, MRDE, MRD, MRDE, MRD 7, MRDE 8 can be rotated by 6 ) For standard position see ange α. Port / BSP threads to ISO 8/ for pressure reading. Dir. of Rotation (Viewed on shaft end) clockwise anticlockwise clockwise anticlockwise Port inlet B B ordering code (see page7) "N" "S" L b a Ø D Ø Dh8 L8 L9 D7/ L L L L L7 L B Ø D6 Ø D Ø D Ø D L L L D8 D9 L Ø D L D8 B CEOP. L8 L9 SE B Ø D. B B B Ø D Ø D B SE B D7/ SE RCOe /.

31 MOOR DIMENSIONS MOOR YPE MRD MRDE MRV MRVE MOO OOR YPE MRD MRDE MRD MRDE MRD 7 MRDE 8 MRV 7 MRVE 8 MRD MRDE MRV MRVE MRD 8 MRDE MRV 8 MRVE MRD 8 MRDE MRV 8 MRVE MRD MRDE MRV MRVE MRD 7 MRDE 8 MRV 7 MRVE 8 MOO OOR YPE MRD MRDE MRD MRDE MRD 7 MRDE 8 MRV 7 MRVE 8 MRD MRDE MRV MRVE MRD 8 MRDE MRV 8 MRVE MRD 8 MRDE MRV 8 MRVE MRD MRDE MRV MRVE MRD 7 MRDE 8 MRV 7 MRVE 8 L L L L L L6 L7 L8 L9 L 9 S E L L L L L L L , 9 7 7, , 7, 8 9, , , , 9, 78,, ,8 9, ,8 7, B B B B S E B Ø D Ø D Ø D Ø D h8 h8 * Ø D Ø D6 D7 7 D7 7 SE D8 D9 Ø D Ø D Ø D a b g M8 G / 8 6 G / M 8 G / 8 9 G / M 8 G / 8 7 G / M G / 8 G / M G / G / , M 8 M6 8 G / 9 7 G / , D D h7 * M6 8 M 8 G / 8 8 G / , , 6 D D h7 * 9 M6 8 M 8 G / 8 G / RCOe /.

32 SHF END DIMENSIONS MOOR YPE MRD MRDE MRV MRVE Code N (Standard) Code B BS ) Code D DIN 8 ) on enquiry Versio n N B D YPE L L L D Ø D L L L D Ø D L L L D ØD MRD MRDE M B8xx M / M W8xx8 e MRD MRDE , M B8x6x M 8/ M Wxx78 e MRV 7 6, M B8xx6 7 6, M Wxx78 e MRD 7 MRDE 8 MRV 7 MRVE 8 MRD MRDE MRV MRVE MRD 8 MRDE MRV 8 MRVE MRD 8 MRDE MRV 8 MRVE MRD MRDE MRV MRVE MRD 7 MRDE 8 MRV 7 MRVE M B8xx M 8/ M W6xx88 e M B8x6x M 6/ M W7xx8 e 79 M Bx7x8 76 M 6/ 8 M W8xx8 e 99 M Bx8x9 76 M 6/ M W9xx8 e 7 M Bxx 7, M 6/ 7 M Wxx68 e 8 8 M Bxx 8 8 M 6/ M Wxx88 e NOE: the threaded holes (D/) for the shaft versions "N", "B" and "D" must be considered as service holes. In case the holes dimensions required by the application are different from the ones listed here above, plese contact PRKER Calzoni. RCOe /.

33 SHF END DIMENSIONS MOOR YPE MRD MRDE MRV MRVE Code F DIN 8 Code P Code P ** Only MRD 7, MRV 7, MRDE 8, MRVE 8 Version F P yp ype MRD MRDE L L L ØD D DIN 8 L L L 6 D Ø D Ke y L x B ransmitte ransmitted 7 6 Nxx89 H 8 6, M k 6 6 x 89 7 torque (Nm) MRD MRDE 8 8 N7xx9 H M k 6 7 x 6 M RV 8 N7xx9 H 7 9 M k 6 7 x 6 MRD 7 MRDE 8 MRV 7 MRVE 8 MRD MRDE MRV MRVE MRD 8 MRDE MRV 8 MRVE MRD 8 MRDE MRV 8 MRVE MRD MRDE MRV MRVE MRD 7 MRDE 8 MRV 7 MRVE 8 8 Nxx79 H 78 6 M 6 k 6 7 x N6xx9 H , M 7 k 6 8 x N7xx9 H 8 M 8 k 6 9 x N8xx79 H 9 M 9 k 6 x Nxx9 H 7 6 M k 6 6 x Nxx9 H 8 8 NOE: the threaded holes (D/) for the shaft versions "P" from the ones listed here above, plese contact P RKE R Calzoni. **his dimension includes two keys must be 8 ** considered M k 6 N 8 x 87 as service holes. In case the holes dimensions required NO OE For higher values of the be transmitted, please PRKER Calzon i by the application are torque consult to different RCOe /.

34 COMPONENS FOR SPEED CONROL MOOR YPE MRD MRDE MRV MRVE MECHNICL CHOMEER DRIVE CHOGENEROR DRIVE ENCODER DRIVE Code "C" Code "" Code "Q" x M8x (x M8x)* x M8x (x M8x)* x M8x (x M8x)* (6)** ( ) * Motor MRD, MRDE INCREMENL ENCODER DIMENSIONS protection encoder drive flange encoder α (see page 6) Female connector included in the supply α = for the motor types MRD, MRDE α = for the other types RCOe /.

35 COMPONENS FOR SPEED CONROL MOOR YPE MOOR YPE MRD MRDE MRV MRVE INCREMENL ENCODER CONNECION DIGRMS Monodirectional Bidirectional Male connector Female connector Female connector Male connector Color wires and function n B row n Power Supply (8 to Vdc) W hit e Output B phase (MX m Vcc) B lu e Power Supply ( Vdc) B lac k Output phase (MX m Vcc) INCREMENL ENCODER ECHNICL D Encoder type: ELCIS mod. 78 Supply voltage: 8 to Vcc Current consumption: m max Current output: m max Output signal: phase MONODIRECIONL and B phase BIDIRECIONL Response frequency: KHz max Number of pulses: (others on request max ) Slew speed: lways compatible with maximum motor speed Operating temperature range: from to 7 C Storage temperature range: from to +8 C Ball bearing life:.x 9 rpm Weigth: gr Protection degree: IP 67 (with protection and connector assembled) Connectors: MONODIRECIONL RSF/. M (Lumberg) male RK6/m (Lumberg) female BIDIRECIONL RSF/. M (Lumberg) male RK7/m (Lumberg) female Note: Female connectors cable length equal to m. RCOe /.

36 ELECRONIC DISPLCEMEN REGULOR RCE MOOR YPE MRD MRDE MRV MRVE RCE USING GENERLIIES he electronic regulator type RCE is designed to be mounted on board of the motors type MRV/MRVE, to control their displacement in relation to a reference value of: displacement pressure speed B he RCE regulator is of the bidirectional ON OFF type, with successive integratory pulses. It is mounted directly on a way, position solenoid valve (CEOP size 6) which pilots the displacement variation of the motor. he power supply is V DC or V C rectified. B (x B(Y (x ECHNICL D DIMENSION and Data Supply Voltage: Vcc ± %rectified (Vmax. peak V) Max power needed: W (6 W if you use the solenoid output: SOLENOID C) Referenced voltage: Vcc (range Vcc) Displacement output signal: Vcc Pressure speed output signal: Vcc Regolation and speed aptitute pulse command: Vcc (optoinsulated input) Galvanic insulation between power and control circuits Reversal of input polarity protection Output power with self proofed MOSFE IP 6 protection Complying with standard CEE Elettronic unit RCE/I Middle plate PRKER DENISON valve Double metering valve VDD House case fixing screw 9,, 6 RCOe /.

37 ELECRONIC DISPLCEMEN REGULOR RCE MOOR YPE MRD MRDE MRV MRVE RCE CIRCUI FOR VRIBLE DISPLCEMEN MOOR Pressure gauge P in X = Min. displacement Vdc Input Pressure Vcc MRV MRVE X Y DV RCE/I P = Pressure transducer Motor (ON OFF) P R DESCRIPION CONSN DISPLCEMEN MODE he circuits of the regulator are powered through a DC/DC converter having V DC output, so to obtain a total galvanic separation from the V DC power lines. he input reference signal to the regulator has been set in the range V DC, as for the output of the regulated values (displacement, pressure, speed). hree internal led show the command condition (+ or ). he pilot oil is dosed at each pulse by a specific dual metering valve type VDD, fitted beneath the solenoid valve. In relation to the parameter that it is wished to keep under control by acting on the motor displacement, the RCE/I regulator can allow different regulation modes. he hydraulic motor is equipped with an inductive (EC) displacement transducer powered by the regulator, which statically reads and saves the current displacement position at each motor revolution. hrough special builtin valves, the motor keeps the set displacement position constant. Due to an intrinsic feature of radialpiston motors, the tendency under load is to move toward maximum displacement. hus the function of the regulator is to restore the original setting with an external voltage reference (range V DC from min. displ. to max displacement). he precision of the actual displacement value is approximately + % over the rated value set. For remote reading of the displacement a V DC output signal is provided, almost linear in the range of the motor displacement variation. o quickly change from one value to another of the set displacement, a special optoinsulated input circuit may be activated in transitory mode with a V DC signal. o enable the regulator only when the motor is running, it is necessary to activate a special optoinsulated input circuit with a V DC signal simultaneously with the start command; an internal trimmer allows a short enabling delay to be inserted if desired. he regulator is normally perform stable adjustments up to a minimum speed of 6 r.p.m. For lower speeds, to approximately 6 r.p.m., it is necessary to use an internal multipleturn trimmer to modify the pause length between the control pulses. he pause length must be greater than the time required by the motor to complete one turn, this is to permit the displacement position read by the transducer at each shaft revolution to be updated in the memory. 7 RCOe /.

38 ELECRONIC DISPLCEMEN REGULOR RCE MOOR YPE MRD MRDE MRV MRVE CONSN WORKING PRESSURE MODE CONSN SPEED MODE When the motor is used in systems equipped with hydraulic accumulators and the torque required by the motor may vary in relation to the process characteristics, the displacement is controlled in relation to the working pressure set for the motor, so that the working pressure remains constant as the required torque varies. he constant pressure regulation can be achieved for torque variations within the displacement variation ratio allowed by the motor. he hydraulic circuit that feed the motor must include a pressure transducer that may be powered by the regulator itself with a voltage of V DC and a signal output of V DC or m. he hydraulic motor is equipped with builtin valves, to maintain the displacement, as well as with the displacement transducer if it is wished to read the actual displacement during torque changes (by processing the displacement signal together with the pressure and speed signals, it is possible to determine the torque and absorbed power). he pressure setting is achieved by means of an external signal in the range V DC ( V DC); the V value must correspond to the full scale value ( V or m) of the pressure transducer. he min. acceptable reference value is V DC. During the startup transitory, the regulator remains disabled for an adjustable period of time (internal trimmer). lso in this case the regulator is enable with a V DC input signal. Even with frequent startstop cycles, the regulator can change the motor displacement to adapt it to the average pressure value saved during the running cycle. he saved pressure signal can be read remotely, again in the range V DC. third V DC power output is available on the regulator to simultaneously energize a way solenoid valve of the type with a conical diaphragm, which intercepts the pilot oilupstream the way solenoid valve. If multistage fixed displacement pumps are used to drive the motor, in certain conditions it is necessary to drain off the excess delivery in relation to the set motor speed. In order to avoid this dissipation, it is possible to use a variabledisplacement motor which would absorb the excess delivery by adjusting its displacement. he regulator in this case accents the speed signal and compares it to the reference value; when the motor speed exceeds the set value, the regulator increases the displacement until the excess delivery provided by the pump is absorbed; at the same time, the working pressure is proportionally reduced, to the advantage of the life of the components of the system (pump, motor, etc.). his provides a simple speed regulating system without energy dissipation, since the circuit includes neither flow regulator valves nor drainage valves. he speed signal saved is also available as output signal for remote reading, again in the field of V DC; this signal may be useful for detecting the maximum speed reached when the motor running cycle is very short (< sec). Here again, the regulation is enable by activating the special V DC input circuit; the command may be delayed by the time the motor needs to accelerate in order to reach the rated speed. If it is wished to switch quickly the speed from one value to another, a special input may be activated with a V DC signal in transitory mode. he precision attainable through this system varies: it is approximately ± % on the fullscale value with the motor at maximum displacement; at minimum displacement the precision is slightly lower. Pressure speed Input Vcc m P offset setting (displacement output) P Control delay P Pulse length setting P Full scale setting (displacement Output) JP (function) Constant Pressure speed Constant displacement JP (sensitivity) MX MIN Solenoid output reversal control 8 RCOe /.

39 B ELECRONIC DISPLCEMEN RNSDUCER MOOR YPE MRD MRDE MRV MRVE ELECRONIC DISPLCEMEN RNSDUCER DIMENSIONS Female connector included in the supply x, length m f MOO OOR YPE B α a M RV 8, 6 ' MRV 7 MRVE 8 MRV MRVE MRV 8 MRVE MRV 8 MRVE MRV MRVE MRV 7 MRVE 8, 7, 8,6 79,, 7,, ' pulse / rpm % Min. displacement VOLGE v DV with V cc input Impedance k lenght min. p = Brown Blue Black Impedance K % % 66% % DISPLCEMEN % ELECRONIC DISPLCEMEN RNSDUCER ECHNICL D Max cont. pressure:, bar Supply voltage: 8 Vdc stab. ±,% Current consuption: m Output current: 6 m Working temperature range: da a 6 C Load impedance: KΩ Reading displacement range: : protection degree: IP 68 Precision F.S. ± % 9 RCOe /.

40 . HYDRULIC PRESSURE CONROL RPC MOOR YPE MRD MRDE MRV MRVE 6 8 Y X P RPC FUNCIONL DESCRIPION he RPC hydraulic regulator keeps the motor working at a constant pressure while supplying a variable torque. he pressure value can be set in the range from to bar BSIC CIRCUIS RPCD code 9776 with pressure <6 bar internal piloting RPCD /X code 9777 with pressure >6 bar external piloting P in X min. cil. P in X min. cil. B X Y B X Y P P max 6 bar P P P P P Z Z RPCD code 7 with pressure <6 bar internal piloting max displacement remote control RPCD code 8 with pressure <6 bar external piloting max displacement remote control P in X min. cil. P in X min. cil. B X Y B X Y P P max 6 bar P P P P P W Z W Z RCOe /.

41 HYDRULIC PRESSURE CONROL RPC MOOR YPE MRD MRDE MRV MRVE RPC USING GENERLIIES variable torque and speed, constant power system can be obtained by using the MRDMRDE motor provided with the RPC constant pressure regulator along with a fixed displacement pump. M max motor M motor p pump max motor displacement P constant REGULION SCHEME M min motor p max pump pressure min. motor displacement regulator operating point Q pump n min. n max. M motor Q HYDRULIC CIRCUI RPC = motor constant pressure regulator P = Q x p max = constant M x n = M x n = constant M n D p R.P.C. M n RPC USING GENERLIIES By replacing the fixed displacement pump with a variable one provided with a constant regulator, it is possible to obtain an enlargement of the torque and speed regulation range to constant power. REGULION SCHEME M variable displacement motor M fixed displacement motor M min. motor M motor p pump increase of the torque/speed range min. motor displacement P constant power constant pressure regulation range of the variable displacement motor P max. pump P min. pump pump constant power regulaton range Q pump M motor variation range of pump delivery variation range of motor speed n min. Q n max. HYDRULIC CIRCUI RPCp = pump constant power regulator RPCm = motor constant pressure regulator P = M x n = M x n = constant M M R.P.C.p R.P.C.m n n D p RCOe /.