PRE* /112 ED PILOT OPERATED PRESSURE RELIEF VALVES WITH PROPORTIONAL CONTROL. Q max (see table of performances) SERIES 10 SUBPLATE MOUNTING

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1 8 3/ ED RE* ILO OERAED RESSURE RELIEF VALVES WIH ROORIONAL CONROL SUBLAE MOUNING p max 3 bar Q max (see table of performances) OERAING RINCILE RE* valves are pilot operated pressure relief valves with electric proportional control and mounting interface in compliance with ISO standards (CEO R H). hese valves are normally used to control hydraulic circuit pressure and enable the use of the full flow rate of the pump, even with settings approaching calibrated values. he two-stage design and wide passages ensure reduced pressure drops thereby improving the system energy performance. ressure can be modulated continuously in proportion to the current supplied to the solenoid. hese valves can be controlled directly by a current control supply unit or by means of the relevant electronic control units to exploit valve performance to the full (see par. ). hey are fitted with a manual pressure relief valve which is factory set to % of the maximum value in the pressure control range. ERFORMANCES (obtained with mineral oil with viscosity of 3 cst at C and electronic control cards) RE RE RE3 Maximum operating pressure: bar 3 hey are available in three sizes for flow rates up to l/min and in four pressure control ranges up to 3 bar. Minimum controlled pressure see p-q diagram Maximum flow l/min Step response see paragraph Hysteresis % of p nom < % HYDRAULIC SYMBOL Repeatability % of p nom < ±,% Electrical characteristic see paragraph Ambient temperature range C - / + M Fluid temperature range C - / +8 Fluid viscosity range cst Fluid contamination degree According to ISO :999 class 8//3 Recommended viscosity cst Mass: kg, / ED /8

2 - IDENIFICAION CODE R E - / - K ilot operated pressure relief valve Electric proportional control Size: = ISO - (CEO R) = ISO -8 (CEO R8) 3 = ISO - (CEO R) ressure control range: = up to bar = up to bar = up to bar 3 = up to 3 bar Coil electrical connection: plug for connector type DIN 3 (standard) D = Nominal solenoid voltage V DC D = Nominal solenoid voltage V DC Seals: N = NBR seals for mineral oil (standard) V = FM seals for special fluids Series No. (from to 9 sizes and mounting dimensions remain unchanged) - CHARACERISIC CURVES (measured with viscosity of 3 cst at C) RESSURE CONROL p=f (I) p [bar] p [bar] I [ma] I [ma] RESSURE CONROL p=f (Q) RESSURE DRO p = f(q) p [bar] RE RE RE3 RE*-3 p [bar] RE RE RE3 3 8 RE*- RE*- RE*- 3 Q [l/min] 3 Q [l/min] 8 3/ ED /8

3 3 - HYDRAULIC FLUIDS Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 3-. For these fluids, use NBR seals (code N). For fluids HFDR type (phosphate esters) use FM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical department. Using fluids at temperatures higher than 8 C causes a faster degradation of the fluid and of the seals characteristics. he fluid must be preserved in its physical and chemical characteristics. - ELECRICAL CHARACERISICS roportional solenoid he proportional solenoid comprises two parts: tube and coil. he tube, screwed to the valve body, contains the armature which is designed to maintain friction to a minimum thereby reducing hysteresis. he coil is mounted on the tube secured by means of a lock nut and can be rotated through 3 depending on installation clearances. NOMINAL VOLAGE V DC RESISANCE (at C) Ω 3.. NOMINAL CURREN A.88.8 DUY CYCLE % ELECROMAGNEIC COMAIBILIY (EMC) According to /8/CE CLASS OF ROECION: atmospheric agents (CEI EN 9) coil insulation (VDE 8) Impregnation I class H class F - SE RESONSE (obtained with mineral oil with viscosity of 3 cst at C and electronic control cards) Step response is the time taken for the valve to reach 9% of the set pressure value following a step change of reference signal. REFERENCE SIGNAL SE % % he table illustrates typical step response times measured with input flow rate of Q = l/min. Step response [ms] 9 - INSALLAION We recommend to install the RE* valve either in horizontal position, or vertical position with the solenoid downward. If the valve is installed in vertical position and with the solenoid upward, you must consider possible variations of the minimum controlled pressure, if compared to what is indicated in paragraph. Ensure that there is no air in the hydraulic circuit. In particular applications, it can be necessary to vent the air entrapped in the solenoid tube, by using the apposite drain screw in the solenoid tube (see par. - - ). At the end of the operation, make sure of having correctly screwed the drain screw. Valves are fixed by means of screws or tie rods on a flat surface with planarity and roughness equal to or better than those indicated in the relative symbols. If minimum values are not observed, fluid can easily leak between the valve and support surface. Surface finishing Connect the port on the valve directly to the tank. Add any backpressure value detected in the line to the controlled pressure value. Maximum admissible backpressure in the line, under operational conditions, is bar. 8 3/ ED 3/8

4 - RE OVERALL AND MOUNING DIMENSIONS 3 8. ø G ø. (max) ø.8 ø. M Mounting interface: ISO --9-*-9 (CEO..--R-3) dimensions in mm Fastening bolts: bolts Mx - ISO orque: 9 Nm NOE: at the first start up, or after a long period of no use, it is necessary to vent the air through the breather () placed at the end of the solenoid tube. 3 Mounting surface with sealing rings: n OR type 3-9 shore (.8 x.) n OR type 9-9 shore (9.3 x.) DIN 3 electric connector Connector removal space Coil removal space Factory setting sealing (we recommend not unscrewing the nut) Breather (male hexagonal spanner ) ressure relief valve (factory set) 8 3/ ED /8

5 8 - RE OVERALL AND MOUNING DIMENSIONS 3 9. ø M G ø.3 ø3. (max) ø. Mounting interface: ISO -8-3-*-9 (CEO..--R8-3) Fastening bolts: bolts Mx - ISO orque: Nm NOE: at the first start up, or after a long period of no use, it is necessary to vent the air through the breather ()placed at the end of the solenoid tube. 3 Mounting surface with sealing rings: OR type 38-9 shore (9.8 x.) OR type 9-9 shore (9.3 x.) DIN 3 electric connector Connector removal space Coil removal space dimensions in mm Factory setting sealing (we recommend not unscrewing the nut) Breather (male hexagonal spanner ) ressure relief valve (factory set) 8 3/ ED /8

6 9 - RE3 OVERALL AND MOUNING DIMENSIONS ø M G ø.3 ø. ø3 (max) dimensions in mm Mounting interface: ISO ---*-9 (CEO..--R-3) Fastening bolts: N. bolts M8x - ISO orque: 3 Nm NOE: at the first start up, or after a long period of no use, it is necessary to vent the air through the breather () placed at the end of the solenoid tube. 3 Mounting surface with sealing rings: OR type 3-9 shore (3. x 3.3) OR type 9-9 shore (9.3 x.) DIN 3 electric connector Connector removal space Coil removal space Factory setting sealing (we recommend not unscrewing the nut) Breather (male hexagonal spanner ) ressure relief valve (factory set) 8 3/ ED /8

7 - ELECRONIC CONROL UNIS EDC- EDC- for solenoid V DC for solenoid V DC plug version see cat.89 EDM-M EDM-M for solenoid V DC for solenoid V DC DIN EN rail mounting see cat. 89 UEIK- for solenoid V DC Eurocard type see cat SUBLAES (see cat. ) RE RE RE3 ype, ports dimensions MRQ3-AIG rear ports : / BS : 3/ BS MRQ-AIG rear ports MRQ-AIG rear ports BS ¼ BS port dimensions / BS / BS / BS 8 3/ ED /8

8 DULOMAIC OLEODINAMICA S.p.A. ARABIAGO (MI) Via M. Re Depaolini el Fax / ED RERODUCION IS FORBIDDEN. HE COMANY RESERVES HE RIGH O ALY ANY MODIFICAIONS. 8/8

E4E PILOT OPERATED DIRECTIONAL CONTROL VALVE WITH ELECTRIC PROPORTIONAL CONTROL SERIES 51

83 300/100 ED E4E PILOT OPERATED DIRECTIONAL CONTROL VALVE WITH ELECTRIC PROPORTIONAL CONTROL SUBPLATE MOUNTING CETOP P05 p max 250 bar Q max (see specification table) MOUNTING INTERFACE OPERATING PRINCIPLE