PROPORTIONAL DIRECTIONAL CONTROL VALVES PILOT OPERATED WITHOUT LVDT TYPICAL PERFORMANCE SPECIFICATIONS W/O LVDT, OPEN INNER LOOP MOUNTING SURFACE

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1 ED8M PILOT OPERTED WITHOUT TYPICL PERFORMNCE SPECIFICTIONS W/O, OPEN INNER LOOP MOUNTING SURFCE NFP/T3.5.1M R D8 (Formely D6) NSI/B93.7M-1986 ISO SIZE 8 These proportional directional control valves are 4-way, pilot operated, spring centered, sliding spool valves. They can be used to control flow direction and rate. Directional control is achieved by solenoid selection; flow rate is a function of the solenoid current. The valve spool will return to center position if electrical power is lost. SPOOL METERING Combination metering spools (code "C") meter oil into and out of the hydraulic actuator. These spools provide excellent control in most applications. The combination metering spools are highly recommended for motor circuits to provide back pressure in either direction. This back pressure provides system stiffness that is required for optimum control. Combination metering spools can be used with a pressure-compensated module to provide proportional pressure compensated flow. Meter-in spools (code "I") meter oil into the actuator. This spool can be used in applications where the actuator is always working against a positive (resistive) load. Meter-in spools can be used with a pressure compensated module. Meter-out spools (code "O") meter flow out of the actuator. These spools are commonly used in applications with "run away" loads such as over-center loads. lso, meter-out spools would be used with high ratio cylinders. It is important to properly size a proportional valve to achieve good resolution. common mistake in specifying proportional valves is selecting a spool with too high a rated flow capacity (low P). The results may be poor control of the actuator, particularly with respect to velocity and resolution. The ideal valve size usually is one that provides just enough maximum flow capability to achieve the desired velocity. Consult with Continental about special metering characteristics: unequal-metering, step metering, other nominal flows and other spool configurations. Use caution when applying a separate internally-drained pressure control valve between the actuator and proportional valve. Back pressure created by meter-out or combination metering proportional valves can add to the spring load of the pressure control valve, resulting in a change of the control pressure level. 145 psi P (1 bar) (FULL LOOP) MXIMUM P,, B, X Ports OPERTING T Port PRESSURE Y Port ➂ MINIMUM PILOT PRESSURE TYPICL STEP RESPONSE Power On TIME (NOMINL) ➀ Spring Return SPOOL STROKE (Center to Offset) SPOOL DISPLCEMENT(Offset to Offset) HYSTERESIS THRESHOLD QUIESCENT 3 psi REPETBILITY DEDBND VOLTGE Code (NOMINL) CURRENT Code (MXIMUM) WTTGE 76 Code (2 C) (continuous) COIL RESISTNCE 68 F (2 C DUTY CYCLE WEIGHT code 3 code 5 C/FC Spool 1C/F1C Spool 2C/F2C Spool 3C/F3C Spool 4C Spool rated operating current w/ F (49 C) fluid & 1 F (38 C) ambient temperature Code 3 Code psi 3 psi 1 psi psi.45 in. 1.1 cu. in. 36 cipm.59 < 3% 1% nominal of spool travel VDC 24 VDC 2.2 mp. 1.1 mp Ohm 15.2 Ohm 32 lbs 31 lbs ms 85 ms < 6% < 6% bar 21 bar.7 bar 18 bar mm 18 ml 14.5 kg 14. kg. NOTES: 1. Response times are effected by pressure, viscosity & flow rate. 2. Data taken with oil F (49 C) and 1 SUS, inlet 1 psi using Continental Hydraulics ECM4 electronic controller. 3. Drain Port (Y) must be connected solely to tank below fluid level. Back pressure or fluctuation of pressures in the drain line may reflect on controlled pressure in the pilot valve and thus the flow output of the main valve. 26 code 5 -R

2 ED8M PILOT OPERTED WITHOUT PRESSURE DROP CURVES (Spools Fully Shifted) FULL LOOP: P > > B > T OR P > B > > T PRESSURE DROP bar psid C, F3C 2C, F2C C 1C, F1C RTING C FC SPOOL CONFIGURTIONS B P T B P T * C Spool Combination Metering F* C Spool Combination Metering FREQUENCY RESPONSE CURVES % TO % INPUT SIGNL 2 % TO % INPUT SIGNL MPLITUDE RTIO (DB) TESTED WITH CHD MPLIFIER ECM4-L4-P1T1-C 1 RTED WITH SPOOL FULLY SHIFTED OIL: 15 VG + F PHSE LG (DEGREES) FREQUENCY RESPONSE (HZ) 27

3 ED8M PILOT OPERTED WITHOUT vs. SIGNL PRESSURE DROP CURVES 145 PSID C/FC SPOOL GPM (285 LPM) psid (33 bar) 3 psid (22 bar) psid (17 bar) 145 psid (1 bar) C/F1C SPOOL 46 GPM (1 LPM) 55 psid (38 bar) 35 psid (23 bar) psid (1 bar) C/F2C SPOOL 26 GPM (99 LPM) psid (41 bar) 4 psid (27 bar) psid (17 bar) 145 psid (1 bar) C/F3C SPOOL GPM (46 LPM) 6 psid (41 bar) 3 4 psid (27 bar) psid (17 bar) 145 psid (1 bar) C SPOOL 38 GPM (145 LPM) psid (24 bar) psid (17 bar) 145 psid (1 bar) NOTES: These curves were run at no load flow condition, with ISO VG32 F. (49 C.). Pressure drop will change with viscosity. Curves are full loop flow P. Conversions: 1 = 3.79 ; 1 bar = 14.5 psi. 28

4 ED8M PILOT OPERTED WITHOUT NFP D8 size (formerly D6) For interface pattern see Mounting Surface section. DIMENSIONS SHOWN IN: (MILLIMETERS) INCHES D SHOWN (1.) R (266.) (1.) Mount to NFP surface (D8) manifold with six 1/2-13NC x 2-1/2" long socket head screws and lockwashers. Bolt kits are available as accessory code BD8-2. Recommended mounting bolt torque is 5 to 6 lbs.-ft. GREY PLUG BLCK PLUG B (22.7) 7.98 (191.5) 7.54 (141.5) 5.57 (53.6) 2.11 (262.6) R (262.6) DI. PIN (2) (5.8) 2. (39.) 1.53 (114.3) 4.5 (57.2) 2. (381.) "a" "" PORT END X B "b" "B" PORT END T P Y VIEW 29

5 ED8M PILOT OPERTED WITHOUT 1/2-14 NPT CONNECTION ft. lbs. MX TORQUE S B & BT B5H DIMENSIONS SHOWN IN: (MILLIMETERS) INCHES BOX MY BE ROTTED 18 (198.6) 7.82 (179.8) 7.8 ORDERING INFORMTION ED8M G L FUNCTION SPOOL MECHNICL OPTIONS OPTIONS 3 5 DOUBLE 3-POSITION SPRING CENTERED 2-POSITION SPRING CENTERED C 1C 2C 3C 4C FC F1C F2C F3C NOMINL RTE (GPM) OMIT DOUBLE VLVES ND VLVES WITH "B" VLVES WITH "" ENERGIZE: P TO TYPICL ORDERING : ED8M-31C-G2D-24L 3 R PILOT DRIN 1 2 OPTION INTERNL PILOT EXTERNL DRIN EXTERNL PILOT EXTERNL DRIN D B BT B5H DIN 4365 / ISO 44 (FORM ) CONNECTORS TOP BOX W/O TERMINL POSTS TOP BOX WITH TERMINL POSTS & GROUND TOP BOX WITH 5-PIN MLE RECEPTCLES FOR 1 OR 2 S 24 VOLTGE VDC 24 VDC

6 These proportional directional control valves are 4-way, pilot operated, spring centered, sliding spool valves. They can be used to control flow direction and rate. Directional control is achieved by solenoid selection; flow rate is a function of the input signal. This model features spool position feedback via an for improved valve performance. The valve spool will return to center position if electrical power is lost. SPOOL METERING Combination metering spools (code "C") meter oil into and out of the hydraulic actuator. These spools provide excellent control in most applications. The combination metering spools are highly recommended for motor circuits to provide back pressure in either direction. Back pressure provides system stiffness required for optimum control. Combination metering spools can be used with a pressurecompensated module to provide proportional pressure compensated flow. Meter-in spools (code "I") meter oil into the actuator. This spool can be used in applications where the actuator is always working against a positive (resistive) load. Meter-in spools can also be used with a pressure compensated module. Meter-out spools (code "O") meter flow out of the actuator. These spools are commonly used in applications with "run away" loads such as over-center loads. Meter-out spools are also used with high ratio cylinders. It is important to properly size a proportional valve to achieve good resolution. common mistake when specifying proportional valves is selecting a spool with too high a rated flow capacity (low P). The result may be poor control of the actuator, particularly with respect to velocity and resolution. Ideal valve size is usually one that provides just enough maximum flow capability to achieve the desired velocity. Consult with Continental about special metering characteristics: unequal-metering, step metering, other nominal flows and other spool configurations. Use caution when applying a separate internally-drained pressure control valve between the actuator and proportional valve. Back pressure created by meter-out or combination metering proportional valves can add to the spring load of the pressure control valve, resulting in a change of the control pressure level. ED8M PILOT OPERTED WITH TYPICL PERFORMNCE SPECIFICTIONS WITH, CLOSED INNER LOOP ➁ MOUNTING SURFCE 145 psi P (1 bar) (FULL LOOP) P,, B, X Ports MXIMUM OPERTING T Port PRESSURE Y Port ➂ MINIMUM PILOT PRESSURE code 3 code 5 code 5-R NFP/T3.5.1M R (D8 -- FORMERLY D6) NSI/B93.7M-1986 ISO SIZE psi 3 psi 1 psi psi TYPICL STEP RESPONSE Power On ms TIME (NOMINL) ➀ Spring Return 6 ms SPOOL STROKE (Center to Offset).45 in mm SPOOL DISPLCEMENT(Offset to Offset) 1.1 cu. in. 18 ml HYSTERESIS THRESHOLD QUIESCENT REPETBILITY 3 psi 36 cipm < 2% < 1%.59 ipm < 1% DEDBND VOLTGE (NOMINL) CURRENT (MXIMUM) WTTGE 76 (2 C) (continuous) COIL 68 F (2 C Code Code Code Code 1% nominal of spool travel VDC 24 VDC 2.2 mp. 1.1 mp Ohm 15.2 Ohm DUTY CYCLE WEIGHT C/FC Spool 1C/F1C Spool 2C/F2C Spool 3C/F3C Spool 4C Spool rated operating current w/ F (49 C) fluid &1 F (38 C) ambient temperature Code 3 Code 5 32 lbs 31 lbs 14.5 kg 14. kg bar 21 bar.7 bar 18 bar NOTES: 1. Response times are effected by pressure, viscosity & flow rate. 2. Data taken with oil F (49 C) and 1 SUS, inlet 1 psi using a Continental Hydraulics ECM4 electronics controller. 3. Drain Port (Y) must be connected solely to tank below fluid level. Back pressure or fluctuation of pressures in the drain line may reflect on controlled pressure in the pilot valve and thus the flow output of the main valve. 31

7 ED8M PILOT OPERTED WITH PRESSURE DROP CURVES (Spool Fully Shifted) PRESSURE DROP bar psid FULL LOOP: P > > B > T OR P > B > > T 3C, F3C 2C, F2C 4C 55 C 5 FC RTING C, F1C SPECIFICTIONS ( L) VOLTGE INPUT CURRENT CURRENT RNGE OUTPUT CENTER LINERITY OPERTING TEMPERTURE SPOOL CONFIGURTIONS P B T B 1 TO 3 VDC 5 ma MX. 4 to ma ± 1% - 4 C. to + 85 C. P T FREQUENCY RESPONSE CURVES % TO % INPUT SIGNL OIL: 15 VG + F MPLITUDE RTIO 18 MPLITUDE RTIO (db) TESTED WITH CHD MPLIFIER ECM4-L4-P1T1-C 1 RTED WITH SPOOL FULLY SHIFTED OIL: 15 VG + F. PHSE LG PHSE LG (DEGREES) FREQUENCY (HZ)

8 vs. SIGNL PRESSURE DROP CURVES 145 PSI P ED8M PILOT OPERTED WITH C/FC SPOOL GPM (285 LPM) psid (33 bar) 3 psid (22 bar) psid (17 bar) 145 psid (1 bar) C/F1C SPOOL 46 GPM (1 LPM) psid (38 bar) 35 psid (23 bar) 145 psid (1 bar) C/F2C SPOOL 26 GPM (99 LPM) C SPOOL 38 GPM (145 LPM) psid (41 bar) 4 psid (27 bar) psid (17 bar) 145 psid (1 bar) 35 psid (24 bar) psid (17 bar) 145 psid (1 bar) C/F3C SPOOL GPM (46 LPM) psid (41 bar) 4 psid (27 bar) psid (17 bar) 145 psid (1 bar) NOTES: These curves were run at no load flow condition with ISO VG32 F. (49 C.). Pressure drop will change with viscosity. Curves are full loop flow P. Conversions: 1 = 3.79 lmp; 1 bar = 14.5 psi. 33

9 ED8M PILOT OPERTED WITH NFP D8 size (formerly D6) For interface pattern see Mounting Surface section DIMENSIONS SHOWN IN: (MILLIMETERS) INCHES GREY PLUG D SHOWN (266.) (1.) (1.) R BLCK PLUG Mount to NFP mounting surface (D8) manifold with six 1/2-13 NC x 2-1/2" long socket head screws and lockwashers. Bolt kits available as accessory code BD8-2. Recommended mounting bolt torque is 5 to 6 lbs.-ft. B (191.5) 7.54 (22.7) 7.98 (141.5) 5.57 (83.8) WIRE. DI. PIN (2) (262.6) 5 -- R 1.34 (381.) 15. S 3 &5 (5.8) 2. (39.) 1.53 (53.6) 2.11 (114.3) 4.5 (57.2) 2. "a" "" PORT END X B T P Y "b" "B" PORT END VIEW 34

10 ED8M PILOT OPERTED WITH OPTIONS; B, BT B5H DIMENSIONS SHOWN IN: (MILLIMETERS) INCHES 1/2-14 NPT CONNECTION ft. lbs. MX TORQUE (179.8) 7.8 (198.2) 7.82 BOX MY BE ROTTED 18 ORDERING INFORMTION ED8M G L L FUNCTION SPOOL PILOT DRIN MECHNICL OPTIONS OPTIONS 3 5 DOUBLE 3-POSITION SPRING CENTERED 2-POSITION SPRING CENTERED C 1C 2C 3C 4C FC F1C F2C F3C NOMINL RTE (GPM) OPTION INTERNL PILOT 1 EXTERNL DRIN EXTERNL 2 PILOT EXTERNL DRIN OMIT R DOUBLE VLVES & VLVES WITH "B" VLVES WITH "" ENERGIZE: P TO DIN 4365 / D ISO 44 (FORM ) CONNECTORS TOP B BOX W/O TERMINL POSTS TOP BOX WITH BT TERMINL POSTS & GROUND VOLTGE VDC VDC B5H TOP BOX WITH 5-PIN MLE RECEPTCLE FOR 1 OR 2 S TYPICL ORDERING : ED8M-31C-G2LD-24L 35