1. General. D 7490/1 2/2-way cartridge valve EM 2.2. Operation pressure p max Flow Q max. = 450 bar = 160 lpm. Cartridge valve (see section 2)

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1 2/2-way directional seated s type EM and EMP for oil hydraulic systems, leakage free in blocked state, available as on/off, soft-shift or proportional Operation pressure p max Flow Q max = 4 bar = 0 lpm Cartridge (see section 2) Example: EMP 21 V Valve with connection block for pipe connection or by means of a banjo bolt (see section ) Example: EM 1 V - /4 F - G General These 2/2-way directional cone seated s show zero leakage while in blocked shifting position. The following versions are available: Basic version ' Directly actuated, two sizes for up lpm (type EM..D.. and EM..DS..). Application, as piloting or discharge s for hydraulic consumers, e.g. idle circulation circuit for 2/2-way cartridge s, -way flow control s or piloted pressure limiting s. ' Piloted, four sizes for up 0 lpm. Basic flow pattern symbol ' Blocked in idle position, opening when energized (NO-characteristic) ' Open in idle position, blocking when energized (NC-characteristic). Switching characteristics ' On/Off, version with defined flow direction (type EM EM 41) as well as for arbitrary flow direction (type EM EM 42) ' Soft-shift, hydraulically dampened shifting "hydraulic ramp" (type EMP.. VG.. and EMP.. SG..) ' Proportional, prop. throttle (type EMP.. V.. and EMP.. S..) The actuation solenoid is a wet armature type, i.e. all moving parts of the and the solenoid are lubricated by the hydraulic fluid, the coil cavity is sealed the outside at the armature tube by means of O-rings. Therefore the solenoid is highly protected against ambient influences e.g. corrosion. The s are bled aumatically during operation. A tapered pin directly opens or closes the valvular passage with the directly actuated type. Whereas a tapered pin opens (NC) or closes (NO) the piloting duct of a stepped pisn with the piloted type. Thereby creating an opening (lifting off from the seat) or closing force at the opposing cross section and annular areas which open or close the main valvular passage. The solenoid acts either on the tapered pin (directly actuated s) or on the tapered piloting pin (piloted s) thereby pulling with NC-s or pushing with NO-s and always acting against the spring return. The is designed be self-locking i.e. it is vibration save. There are various passage cross sections available with type EMP.. enable a cusmized shifting characteristic, see curves in sect The operation of these s takes a suited prop. amplifier e.g. type EV 1 M 2 acc. D 781/1 or type EV 1 G 1 acc. D 788. These s are be screwed in simply shaped tapped holes of a manifold which may be machined with a usual standard steel drill (point angle 118 ) thereby aumatically forming a stepped shoulder when the core diameter is drilled. The sealing of the inlet outlet takes place at the contact area between the facial sealing edge of the screwed-in end of the body and the stepped shoulder of the core diameter at the location thread. Various connection blocks are available which may feature also additional functions e.g. drain s, throttles etc. 2.2 HAWE HYDRAULIK SE STREITFELDSTR. 87 MÜNCHEN D 7490/1 2/2-way cartridge EM 1996 by HAWE Hydraulik June 00-06

2 D 7490/1 page 2 2. Solenoid actuated cartridge 2.1 Available versions, Main data Order example: EM 21V - G 24 For version with connection block, see section! Table 2: Functions Table 1: Actuation solenoid Standard (with device socket) Without device socket With device socket featuring LED's Version with KOSTAL plug 4 ) Nom. voltage U N (Other voltage on request!) Nominal power P N G 12 X 12 L 12 K 12 12V G 24 X 24 L 24 K 24 G 98 2 ) X V 98V DC-voltage G 5 2 ) X V WG 1 ) W = (EM 1..; EM 2.. and EM..) W = (EMP 21..; EMP 1.. and EM 4..) WG 2 ) V /60 Hz 2V /60 Hz AC-voltage Pressure p max (bar) Flow Q max approx. (lpm) Mass (weight) (kg) Basic type, size, flow pattern symbol EM 11(21) D.. = Directly actuated EM 11.. EM 4.. = Piloted Specified flow direction Only for piloting applications 4 5 ) EM 11 D EM 21 D EM 11 D 0,8 A B Inadmissible: B A NC- Proportional 4 5 ) ) EM 11 V EM 21 V EM 1 V EM 41 V EMP 21 V EMP 21 V () 6) EMP 21 VG 7) EMP 21 VG () 6) 7 ) EMP 1 V EMP 1 VG EM 12 V EM 22 V EM 2 V EM 42 V 7) A B B A = Free flow, solenoid must be deenergized Any NO- 1) Only for piloting applications 4 5 ) ) EM 11 DS EM 21 DS EM 11 DS 0,8 EM 11 S EM 21 S EM 1 S EM 41 S A B Inadmissible: B A Proportional EMP 21 S EMP 21 S () 6) EMP 21 SG 7) EMP 21 SG () 6) 7 ) EMP 1 S EMP 1 SG 7) 4 5 ) EM 12 S EM 22 S EM 2 S EM 42 S Any 1) NO- always with manual emergency actuation (not illustrated) 2) For operation with mains or 60 Hz via remotely installed e.g. in a cabinet, cusmer furnished bridge rectifiers (silicon rectifier) G 98 for 1V AC, G 5 for 2V AC ) Bridge rectifier in the device connecr, for and 60 Hz 4) KOSTAL plug is splash water protected and used preferably for mobile applications. Only type EM 1.., EM 2.. and EM.. are available with the appropriate connection scheme (plug is not scope of delivery). 5) Max. permissible pressure only with manifolds made of steel. Observe the reduced strength of the thread for other materials e.g. cast iron, light alloy. 6) Version with cusmized throttle characteristic (see p-q curves at page ) 7) Version with dampened switching characteristic, thereby preventing pressure surges caused by e.g. decompression of high volumes or after running pumps.

3 D 7490/1 page 2.2 Further parameters General and hydraulic data (type EM.. and EMP..) Nomenclature and design Installed position Operation pressure 2/2-way solenoid actuated seated (cone seated design) Arbitrary p max = 4 bar (see restrictions in sect. 2.1); With type EM..V: p min = 2 bar Perm. flow Depending on type (section 2.1) Pressure fluid Hydraulic fluid (DIN 524 table 1 ); ISO VG 68 acc. (DIN 519) Viscosity range: min. 4; max. mm 2 /s; optimal operation range:...0 mm 2 /s Also suitable are biodegradable pressure fluids of the type HEPG (Polyalkylenglycol) and HEES (synth. Ester) at operation temperatures up + C. HETG (seed oil) is not suited Temperatures p-q-curves Ambient: C Fluid: C, pay attention the viscosity range! Start temperature down - C are allowable (Pay attention the viscosity range during start-up!), as long as the operation temperature during consequent running is at least K (Kelvin) higher. Biodegradable pressure fluids: Pay attention manufacturer's information. With regard the compatibility with sealing materials do not exceed + C. Attention: Observe the restrictions regarding the max. permissible operation of the solenoid specified in sect ! Pressure drop p (bar) Pressure drop p (bar) FlowQ (lpm) Pressure drop p (bar) Pressure drop p (bar) Fluid viscosity during measurement 60 mm 2 /s Pressure drop p (bar) Pressure drop p (bar) Pressure drop p (bar) A B EM(P)...V energized solenoid EM11D(S)..; EM21D(S); EM(P)...S deenergized solenoid 1) Only with EM...V: Free flow B A, only while solenoid is deenergized 2) Applies also type EMP.. VG..(SG..) Non illustrated flow directions are like type EM.. of similar size

4 D 7490/1 page Electrical data (type EM..) Nom. voltage U N 12V DC 24V DC Nominal power P N EM 1.. EM.. 21W 21W EMP.. and EM 4.. W W Nom. current I N EM 1.., EM 2.., EM. 1.2A A EM4.. and EMP..S(V)G.. 2.5A 1.A Max. current I lim EMP..S(V) A 0.87A Switching times approx. ms Switchings / h Insulation material class Protection class DIN 0 Connecr and connection patterns DIN 46 Pg 9 with coding G.., WG.. and L.. EM..S: On 1 EM..V: On Off Off 1 The switching times with version WG.. are 2 times longer approx. 00 (rather even distributed) F; Contact temperature approx C (solenoid housing) with an ambient temperature of C. Classification F permits a max. winding temperature of approx. 1 C; This won't be exceeded if the guideline figures for %ED are observed during operation. The thermal load of the coil may be reduced when an economy circuit is employed (see D 781). IP 65, DIN EN / IEC IP 65 (properly installed plug) DC-voltage G 12 G 5 K 12 and K 24 L 12 and L 24 Relative duty cycle: 0% ED (Specification on the solenoid) Reference value and restriction in the operation %ED S-5 min Ambient temperature } U C AC-voltage WG 1 and WG 2 Attention: Plug (CO. Kostal No ) is not scope of delivery with coding K 12(24) Recommended proportional amplifiers: EV1SA1-24 (Device plug) acc. D 7818 EV22K2-12/24 (Board) acc. D 7817/1 EV1G1-12/24 (Closed model) acc. D 787 EM1M2-12/24 (Module) acc. D 781/1 Cut-off energy Dither frequency for Type EMP..V(S) Guideline for max: approx. < Ws + approx. % when measuring at U N...1Hz I-Q-curve 12V DC 24V DC 12V DC 24V DC Control current I (A) Control current (A) 12V DC 24V DC Control current I (A) Control current (A) 12V DC 24V DC Curve a = load pressure p = bar b = load pressure p = 0 bar

5 D 7490/1 page 5 2. Unit dimensions All dimensions in mm, subject change without notice 2..1 Actuation solenoid Type G.., WG.. and L.. Type K 12 and K 24 approx. 4 Plug may be installed rotated by 4x90 Manual emergency actuation with EM(P)...S Actuation force at pressure 0 bar at A = approx. N Max. rque Type (Nm) EM EM EM.. 12 EM EMP 2.. EMP.. Suited for plug from Co. Kostal No M27x1 Cable gland Pg 9 For missing dimension see below! Order coding for spare parts (e.g. for replacement) Actuation: Solenoid coil Device socket Version for plug conforming DIN 46 A Coding Order No. for type EM 1.. EMP.. EM.. EM4.. G 12, X 12, L 12 G 24, X 24, L 24 G 98, X 98, WG 1 G 5, X 5, WG 2 Coding G..: MSD -9 Coding. WG..:MSD 4-9/P Coding L..: SVS Version for plug from Co. Kostal Coding K 12 K 24 Order No EM 1.. EM.. EMP.. EM 4.. a a1-7.5 b 12 c 22 d e Version G: 29 1 ) WG: 4 1 ) L: Seal kit (O-rings ): Order coding For type 1 2 DS DS DS P DS DS P DS EM 11(12).. EM 21(22).. EMP 21.. EM 1(2).. EMP 1.. EM 41(42).. 12x FPM Sh 12x FPM Sh x2 NBR 90 Sh 12x FPM Sh x2 NBR 90 Sh x2 NBR 90 Sh 1 x 2.4 P Sh A.0 x 2.61 P Sh A x2 P Sh A 21 x.5 P Sh A 21 x.5 P Sh A x.5 P Sh A 7.65 x 1.78 HNBR 90 Sh x 1.78 HNBR 90 Sh x 1.78 HNBR 90 Sh x 2.62 HNBR 90 Sh x 2.62 HNBR 90 Sh.07 x 2.62 HNBR 90 Sh 1) This dimension is depending on the manufacturer and may be up max. mm (acc. 46).

6 D 7490/1 page Valve element Type EM 11 D and EM 11 DS EM 11 D0,8 and EM 11 DS0,8 Type EM 11(12) V and EM 11(12) S depth 4,5 depth 4,5 1) 1) Measuring balll #12 Measuring ball #12 Type EM 21 D and EM 21DS Type EM 21(22) V and EM 21(22) S EMP 21 V.. and EMP 21 S.. depth 4,5 depth 4,5 1) 1) Measuring ball # Measuringball # 1) Detail X, see page 7

7 D 7490/1 page 7 Type EM 1(2) V and EM 1(2) S EMP 1 V.. and EMP 1 S.. Type EM 41(42) V and EM 41(42)S depth 5 depth 5 Reference ball #24 Reference ball # Detail X M 2:1 # Drilling # Type # d H8 # d 1 a + Reamer chambfer EM 11(12) EM(P) 21(22) EM(P) 1(2) EM Attention: The angularity of the 118 chamfer of the stepped bore are lerated with reference the reamed core diameter # d H8 (reaming depth). The stated lerance must be observed. Also see section 4!

8 D 7490/1 page 8. Connection blocks For direct connection of pipes via industrial standard pipe fittings with tapped journals shape B DIN 852 sheet 2 Symbols (without flow pattern symbols acc. sect. 2.1) Vers. without drain Vers. with drain Vers. with manual drain.1 Connection block without/with drain Order example EM 21S - /8 - G 24 Orifice 0,8 mm or 1,5 mm Version Basic type acc. sect. 2.1 Coding Port A and B DIN ISO 228/1 L B H Main dimensions in mm a b c c 1 e f g Order No. Connection block without Mass (weight) approx. (kg) Without drain EM 11 D(DS) EM 11 D(DS)0,8-1/4 G 1/ EM 11(12) V EM 11(12) S - 1/4 - /8 G 1/ EM 21 D(DS) - 1/4 G 1/ EM(P) 21(22) V.. EM(P) 21(22) S.. - /8-1/ EM(P) 1(2) V.. EM(P) 1(2) S.. - 1/2 - /4 G / With manual drain Vers. with manual drain EM 41(42) V EM 41(42) S EM 11(12) V EM 11(12) S EM(P) 21(22) V.. EM(P) 21(22) S.. EM(P) 1(2) V.. EM(P) 1(2) S.. EM 41(42) V EM 41(42) S EM(P) 21(22) V.. EM(P) 21(22) S.. - / /4A - /8A - /8A - 1/2A - 1/2A - /4A - /4A - 1A -/8N0,8 -/8N1,5 G /4 G 1 G 1/4 G /4 G /4 G M 8, 8 deep, both sides M 8, 8 deep, both sides M 8, 8 deep, both sides M 8, 8 deep, both sides M 8, deep, rear side DIN ISO 228/1 = BSPP Version without drain Version with drain Drain screw 5 Version with manual drain passing Drain (push-butn red galvanized)

9 D 7490/1 page 9.2 Connection block fixed via banjo bolt Version with drain Order examples: EM 21V - 1/2F - K 12 Version with drain and drop-rate braking EM 11S - /8F - SBH - 6, - G24 Tapped ports conforming DIN ISO 228/1 (BSPP) A A G /4A B G /4 Basic type acc. sect. 2.1 A EM 11(12)V EM 11(12)S Mx1.5 Mx1.5 Symbols, be completed by the flow pattern symbol acc. sect. 2.1 EM(P) 21(22)V.. EM(P) 21(22)S.. EM(P) 1(2)V.. EM(P) 1(2)S.. With drain - /8 F - F - 1/2 F - /4 F With drain and drop-rate braking SB 1(2)H acc. D 69. Attention: p max = bar! Desired Flow range coding flow within the adjustment range Flow range from... in lpm - /8F - SB 1. H F - SB 1. H /2F - SB 2. H Position adjustable banjo mount at A Type EM...-../..F Type EM...-SB1(2). H-.. (banjo bolt) Respectively 60 rotatable Seal ring KDS.. Drain screw 5 SW (Drop-rate braking cartridge acc. D 69) Type EM... - /8F EM... - SB1.H Ports DIN ISO 228/1 (BSPP) A A B B H D 24 a b c c d 21.9 e 12.5 e 1.5 e 2 12 f h h 2 27 g 28 m Mass (weight) approx. (kg) EM(P) /2F EM... - SB2.H A EM 1(2)V-/4F EMP 1V..-/4F G /4A G /

10 D 7490/1 page. Connection blocks with additional features Order examples EM 11V - 1/4 D - K 12 EM 11S - /8 DG Port thread A and B B and F (BSPP) G 1/4 Basic type acc. sect. 2.1 EM 11(12)V EM 11(12)S EM 21(22)V EMP 21V.. EM 21(22)S EMP 21S.. Symbols, be completed by the flow pattern symbol acc. sect. 2.1 Versions of the connection blocks with additional elements with bypass With pressure switch throttle DG. DG 4, DG or DG 65 acc. D 54-1/4 D - /8 D - /8 DG Adjustable pressure range (bar): DG DG DG...2 DG DG With rather pressure independent flow limitation B F by means of 2-way flow control SJ 0... acc. D 795. Attention: p max = bar! - /8 SJ0. C -... Coding for flow range (without) Desired flow within the adjustment ranges Flow range from... in (lpm) Type EM /4 D and EM(P)... - /8 D Type EM(P) 21(22)V.. - /8 - SJ0.C -.. # 6. passing # 6. passing Adjustment travel s Mass (weight) approx. 0.9 kg Type B H a b h s Mass (weight) approx. (kg) EM /4 D EM(P)... - /8 D

11 D 7490/1 page 11 Type EM 11(12).. - /8 DG For missing specifications see D 54 (DG..) # 6. passing Plug may be installed rotated by 4 x 90 Mass (weight) = approx. 0.9 kg 4. Appendix 4.1 Notes for initial operation The angularity of the 118 chamfer of the stepped bore lerance is in reference the reamed core diameter #d H8 (reaming depth). The stated lerance must be observed. Also see section 2..2! This enables a max. edge force on the facial area of the tapped journal when the is screwed in with the correct rque and it also prevents disrtion of functional parts which might cause malfunction (sticking). The correct angular orientation may be checked when the is installed the first time and can be remachined in case of minor deviation. ; Screw in the and tighten steadily with the correct rque (see sect. 2..1). < Remove the again and check whether the journal of the a has produced an annular impact b at the chamfer of the stepped bore. When this impact is even everything is correct and the can be reinstalled as described above. = When the annular impact is not evenly distributed over its length or not complete the should be reinstalled but with up 1 1% of the specified rque (see sect. 2..1). Remove the and check the annular impact again whether it is correct now (see above); It will be so in most cases and the can be reinstalled with the rque specified in sect If it is still not correct after above procedure it will be necessary remachine the bore. 4.2 Tapped plugs Mounting holes in the manifold may be blocked if required by tapped plugs e.g. if uniform manufactured manifolds should be equipped with or without cartridge s depending on application. Passage open Tapped plug Seal ring ; Passage blocked Tapped blockage Seal ring ; Seal ring < Dimensions of the mounting holes acc. sect. 2..2! Size and type K Tapped plug 1 ) Tapped blockage 1 ) Torque (Nm) Seal ring ; AU 90 Sh Seal ring < HNBR 90 Sh EM 11(12)V(S) b a 6 1x x1.78 EM(P) 21(22)V(S) b a 8.0x x1.78 EM21D(DS) 7902 a 8.0x x1.78 EM(P) 1(2) b a 12 21x x2.62 1) Complete with O-ring EM 41(42) x.5.07x2.62