EHBG-03 EHBG-06 EHBG-10. Refer to Model No. Designation. 2% or Less(1%) 1% or Less *2. Refer to frequency Response on page V DC

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1 Proportional Electro-ydraulic These valves, consist of a small size but high performance E series electro-hydraulic proportional pilot relief valve and a low noise type relief valve. The valves control the system pressure proportionally through a controlled input voltage. EIC Specifications Description *1 *2 EBG-3 EBG-6 EBG-1 Max. Operating Pres. Max. Flow 4 Min. Flow 3 Pres. Adj. Range Refer to No. Designation Coil Resistance Ω 1 ysteresis 2% or Less(1%) Repeatability 1% or Less *2 Frequency Response Refer to frequency Response on page V DC Supply Electric Power (21 to 28V DC included Ripple) Power Input (Max.) W 28 Input Signal Voltage The value in () is for the closed-loop type. The repeatability of the valve is obtained by having it tested independently on the conditions similar to its original testing. *1 C: / 5V DC : / 5V DC Input Impedance kω 1 Alarm Signal Output (Open Collector) Voltage: Max. 3V DC Current: Max. 4 ma C: 5 V DC / Signal Output : 5V DC / Ambient Temperature C (With Circulated Air) Graphic Symbols Open-Loop Type Designation F- EB -G -3 -C -S - Special Seals F: Special Seals for Phosphate Ester Type Fluid (Omit if not required Series EB: Proportional Electro-ydraulic Relief Valve Type of Mounting G: Sub-Plate Mounting Valve Size Adj. Range C: ~ : ~ Open-Loop Type With Sensor Control Type None: Open Loop S : Open-Loop with Sensor L : Closed-Loop Closed-Loop Type Design Proportional Electro-ydraulic Note: For the lower limits of the adjustable pressure shown with an mark ( characteristics on page 652. ), See the minimum adjustable pressure Proportional Electro-ydraulic 649

2 Mounting Bolts EBG-3 Socket head cap Screw M12 x 4Lg. Qty Bolt Kit BKEBG-3- EBG-6 M16 x Lg. 4 BKEBG-6- EBG-1 M2 x 6Lg. BKEBG-1- Sub-Plate Sl. No. 1 EBG-3 2 EBG-6 3 EBG-1 Sub-Plate s Thread size Mass Kg. BGM /8 BSP.F 2.4 BGM-3X-38 1/2 BSP.F 3.1 BGM /4 BSP.F 4.7 BGM-6X-38 1 BSP.F 5.7 BGM /4 BSP.F 8.4 BGM-1X /2 BSP.F 1.3 E SERIES Sub-plates are available. Specify sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a good machined finish. For Sub-plates details please refer page no Instructions Safety Valve At shipment, the pressure of safety valve is set to the upper limits of the adjustable pressure ranges plus the extra as shown below Extra to be Sl. added at shipment No. 1 EBG-3 15 (at ) 2 EBG-6 15 (at ) 3 EBG-1 (at ) Piping to the Reservoir The tank port should be connected directly to the reservoir. Be sure the end of pipe is dipped in to the oil in the reservoir. Low A flow rate of 3 or higher should be used to avoid preselected pressure instability. If the operating pressure upper limit is low or a different flow rate upper limit is used, make adjustment after calculating the safety valve pressure setting from the following equation; Setting = (Operating pressure upper limit) + (Additional pressure indicated below) To lower the pressure setting, turn the safety valve pressure adjustment screw anti clock wise. After adjustment, be sure to tighten the lock nut EBG-3 EBG-6 EBG-1 Additional Additional Additional Proportional Electro-ydraulic

3 EBG-3/6/1- - : EBG-3/6/1- -S- : EBG-3/6/1- -L- : (Open-Loop Type) (Open-Loop Type with Sensor) (Closed-Loop Type) DIMENSIONS IN MILLIMETRES Sl. No. Open-Loop Type Mass Kg. Closed-Loop Type with Sensor 1 EBG EBG EBG Fully Extended F A Power Indicator Lamp B C E D Amplifier (Refer to page no 636) 48 Electrical Conduit Connection 1/2 BSP.F Thd. Port "P" Tank PorT "T" Dia. x Thru. J Dia. Spot Face 4 Places Close-Loop Type Opened-Loop Type with Sensor Air Vent 3 ex. Soc. Loc Nut 1 ex. Mounting Surface (O-Ring furnished) K 6 L N Q Locating Pin 6 Dia. Inc. Manual Pr. Adj. Screw 3 ex. Soc Adaptor Octagonal Width 22 A B C D E F J K EBG EBG EBG U V Safety Valve Pr. Adj. Screw 3 ex. Socket Proportional Electro-ydraulic L N Q U V Mounting Surface EBG ISO-6264-AR-6-2-A EBG ISO-6264-AS-6-2-A EBG ISO-6264-AT-6-2-A Proportional Electro-ydraulic 651

4 Minimum Adjustment Viscosity E SERIES : 3 cst EBG-3 EBG-6 EBG Min. Adj Min. Adj Min. Adj Input Signal Voltage Vs : : : EBG EBG EBG EBG-3-C EBG-6-C EBG-1-C Close Loop Type EBG-1- EBG-6- EBG-3- EBG-3- EBG-6- EBG-1- : : : EBG-3--L 1 EBG-6--L 1 EBG-1--L EBG-3-C-L EBG-6-C-L EBG-1-C-L Proportional Electro-ydraulic

5 Vs. Viscosity EBG : 3 cst EBG-3--L EBG-3-C-L EBG-3- EBG-3-C EBG-6 EBG-6--L EBG-6-C-L Vs. EBG-3 Temperature Viscosity EBG-3--L EBG-3-C-L EBG-3- EBG-3-C EBG-6 : C cst EBG-6- EBG-6-C EBG-1 EBG-1--L EBG-1-C-L EBG-1- EBG-1-C 3 4 EBG-1 : 4 Proportional Electro-ydraulic 653 Proportional Electro-ydraulic

6 Step Response (Example) The step responses below are those obtained when the valve it-self is tested independently. The step responses may differ from when the valve is used in combinations with other control valves. EBG-3-C EBG-6-C E SERIES Trapped Oil Volume : 1 L Viscosity : 3 cst : : : 4 EBG-1-C EBG-3- Closed pen Loop Type EBG-3-C-L 3 EBG-6- EBG-6-C-L 3 EBG-1- : : : 4 EBG-1-C-L EBG-3--L 3 EBG-6--L 3 EBG-1--L 654 Proportional Electro-ydraulic

7 Frequency Response Trapped Oil Volume : 1 L Viscosity : 3 cst EBG-3 Frequency(z) Gain -6-3 Phase(deg) Gain(dB) : 8±16 : Phase EBG-6 Frequency(z) Phase(deg) Gain(dB) : 8±16 : Phase Gain Phase(deg) EBG Gain(dB) Frequency(z) : 8±16 : 4 Phase Gain Proportional Electro-ydraulic Proportional Electro-ydraulic 655