PROPORTIONAL ELECTRO-HYDRAULIC CONTROLS

Transcription

1 H PROPORTIONAL ELECTRO-HYDRAULIC CONTROLS Hydraulic Controls H-3 H-1

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3 E Series Hydraulic Controls Hydraulic Controls Max. Maximum Flow Types KS Graphic Symbols Operating L/min Page Pilot Relief Valves 24.5 {250} EDG 01 H-5 Relief Valves 24.5 {250} EBG H-10 10Ω-10Ω Series Flow Control and Relief Valves 24.5 {250} EFBG H-16 Power Amplifiers H-22 H-3

4 Hydraulic Fluids 1. Fluid Types 2. Recommended Fluid Viscosity and Temperature Any type of hydraulic fluid listed in the table below can be used. Use hydraulic fluids which satisfy the both recommended viscosity and oil temperatures given in the table below. Petroleum Base Oils Use fluids equivalent to ISO VG 32 or VG46. Name Viscosity Temperature Use phosphate ester or polyol ester fluids. When Pilot Relief Valves 15~400mm 2 /s Synthetic Fluids phosphate ester fluid is used, prefix F-" to the model number because the special seals Relief Valves (cst) -15~+70 (fluororubber)are required to be used. Water-containing Fluids Use water glycol fluid. Flow Control and Relief Valves 20~200mm 2 /s (cst) Mounting Positioning Instructions Be sure that the air vent faces up. In addition, if the valve is mounted vertically, the minimum adjustment pressure is 0.2 {20.4kgf/cm 2 } or higher. Good example Air Vent Air Vent 3. Control of Contamination Due caution must be paid to maintaining control over contamination of the hydraulic fluids which may otherwise lead to breakdowns and shorten the life of the valve. Please maintain the degree of contamination within NAS 1638-Grade 11. Use 20 m or finer line filter. Hyseresis and Repeatability Value Indicatios The hysteresis and repeatability values indicated in the specifications for each control valve are determined under the following conditions: Hysteresis Value: Obtained when SEWON's applicable power amplifier is used. Repeatability Value : Obtained when SEWON's applicable power amplifier is used under the same conditions. Manual Adjustment Screw When initial adjustments are to be made or when no current is supplied to the valve due to electrical failure or other problem, turn the manual adjustment screw Air Vent to temporatily set the valve pressure / flow rate. In that case, when turn the manual adjustment screw clockwise, the valve pressure / flow rate increases. Under Air Vent normal condition, however, this screw must be kept in its original position (see the figure to the below). Bad example 3-Air vent Series Solenoid Manual Adjustment Screw Air Bleeding Air Vent Air Vent 10Ω Series Solenoid To ensure stable control, bleed the air from solenoid completely and fill its core with oil. Bleeding can be done by slowly loosening one of the airvents at the end of the solenoid. Choose one of the three air vents which is expected to work most effectively. Tank and Drain Piping The tank-line back pressure and drain back pressure directly affect the minimum adjustment pressure. Therefore, do not connect the tank or drain pipes to other lines, but connect them directly to the reservoir maintaining the back pressure as low as possible. H-4 Be sure that the tank and drain pipe ends are immersed in fluid. Hydraulic Pilot Relief Valves

5 E-SERIES Hydraulic Pilot Relief Valves This valve consists of a DC solenoid and a direct-acting relief valve. It serves as a pilot valve for a low flow rate hydraulic system or a proportional electro-hydraulic control valve and controls the pressure in proportional to the input current. Note that this valve is used in conjunction with the applicable power amplifier. Ratings Description Model Numbers EDG P T -51 Max. Operating Pres. 24.5{250} Max. Flow L/min 2 Min. Flow L/min 0.3 Adj. Range Refer to Model Number Designation B : 800 Rated Current ma C : 900 H : 950 Coil Resistance Ω 10 Hysteresis 3% or less Repeatability 1% Approx. Mass kg 2 Model Number Designation ED G -01 V -C -1 -PN T13-51 Adj. Series Type of Valve Size Applicable Control Range Safety Valve Number Mounting { kgf/cm 2 } ED : B : 0.5~ 6.9 : General use { 5~ 70} None: Proportional G : C : 1.0~ 15.7 Without Safety Valve ElectroHydra Sub-Plate 01 V : Vent Control of { 10~ 160} Relief ulic Pilot Mounting Valve 1 H : 1.2~ : With Safety Valve Relief Valve { 12~ 250} (Omit if not required) 1. When the valve is to be used for vent control purpose, orifice adjustment is required due to piping capacity limitations. Therefore, consult your SEWON representative in advance. 2. Standard of T-line Orifice. Pres. Adj. Range B : T15, C : T13, H : T11 The orifice used as the pilot valve may differ from the standard orifice. Sub-Plate T-Line P-Line Orifice Orifice 2 PN: T15 Without Orifice T13 (Standard) T11 KS Graphic Symbols Design Number 51 Hydraulic Pilot Relief Valves Sub-plate Model Numbers Thread Size Rc Approx. Mass kg DSGM DSGM-01X-30 ¼ 0.8 DSGM-01Y-30 ⅛ ⅜ Without Safety Valve Please order the sub-plate using above the model number when you see it. The mounting surface should be used roughly 6-S after grind when you made it yourself. Sub-plate are shared with those for DSG-01 series solenoid operated valve. Please refer to page E-18 for dimension. With Safety Valve Hydraulic Pilot Relief Valves H-5

6 Appilcable Power Amplifiers For stable performance, it is rrecommended that SEWON's applicable power amplifiers be used (for details see page E-22). Attachment Mounting Bolts soket head cap screw : M5 45L 4 Pcs Model Number : AMN-D-10 (For DC power supply) Instructions Tank-Line Back Check that the tank line back pressure does not exceed 0.2 {2.0kgf/cm 2 } Vent Control When the valve is used for vent control of relief valves or for other valve vent control purposes, use the pipes of Dia. 6 mm, 300mm or less length for piping connection. If the pressure is instable, provide a 1.0 to 1.5 mm diameter orifice to the vent port of the relief valves or others. Circuit Control When the pressure in a circuit is directly controlled with this valve, set the trapped oil volume being more than 40cm 3. Low s The preselected pressure may become instable. To avoid such pressure instability, the flow rate should not be lower than 0.3 L/min. Safety Valve Setting The pressure of the safety valve at the maximum flow is preset at the value equal to the upper limit of the pressure adjustment range plus 2.{2.0kgf/cm 2 } In case where the upper limit of operating pressure is low or the upper limit of flow rate to be used is different from the specified maximum flow, please adjustand determine the setting pressure of the safety valve at the value calculated from the following formula. Setting pressure = (Operating pressure upper limit) + (Additional pressure indicated below) To lower the setting pressure, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten the lock nut. Additional With Safety Valve Without Safety Valve Fully Extended 216 Fully Extended Adj. Screw for Safety Valve 3Hex. Soc. 5.5 Dia. Through 9.5 Bore 4Places INC For other dimensions, refer to the without safety valve. Lock Nut 10 Hex. The direction can be altered to every 90 degree angles. Port "P" Tank Port "T" Connector The direction can be altered to every 90 degree angles. Cable Departure Cable Applicable Outside Dia. 8-10mm Conductor Area Not Exceeding 1.5mm 2 Air Vent 3 Hex. Soc. 3Places Manual Adj. Screw 3 Hex. Soc. INC Mounting Surface (O-Ring Furnished) Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates (E-18) in common use. H-6 Hydraulic Pilot Relief Valves

7 E-SERIES Step Response(Example) These characteristics have been obtained by measuring on each valve. Therefore, they may vary according to a hydraulic circuit to be used. : 2L/min Trapped Oil Volume : 40cm 3 Viscosity : 30mm 2 /s{cst} Time Step Signal Step Signal Step Signal Time Time Frequency Response Frequency Control vs. Input Current Phase(deg.) Gain Phase Gain Trapped Oil Volume Viscosity Min. Adjustment Min. Adjustment Viscosity vs. Viscosity Input Current Viscosity vs. Oil Hydraulic Pilot Relief Valves Temperature Viscosity Hydraulic Pilot Relief Valve H-7

8 List of Seals and Solenoid Ass y Without Safety Valve EDG P T -51! CAUTION When making replacement of seals, please do it carefully after reading through the relevant instructions in the Operator's Manual. With Safety Valve EDG P T List of Seals Item Name of Parts Part Numbers Qty. 14 O-Ring JIS B A-P O-Ring JIS B B-P O-Ring JIS B B-P O-Ring JIS B B-P O-Ring JIS B B-P O-Ring AS (NBR, Hs90) 1 20 O-Ring JIS B B-P Fastener Seal SG-FCF-4 1 Note) O-Ring(Item 16, 18, 20) and the fastener seal(item 21) are Pilot Valve This table shows the proportional electro-hydraulic control valve which uses this valve(edg-01 ) for the pilot valve, the valve model number, and the solenoid assembly number. included in the solenoid assmbly. Valve Model Numbers Pilot Valve Model Numbers EBG-03-C-51 EDG-01V-C-1-PNT09-51 Solenoid Ass y EBG-03-H-51 EDG-01V-H-1-PNT09-51 Model Numbers 13 Solenoid Ass y EBG-03-C-T-51 EDG-01V-C-PNT09-51 EDG P T -51 E318-Y06M EBG-03-H-T-51 EDG-01V-H-PNT09-51 EDG-01V- - -P T -51 E318-Y06M EBG-06-C-51 EDG-01V-C-1-PNT10-51 Note) The connector assembly GDM-211-B-11(Item 12) is not included in the solenoid assmbly. Ass y. EBG-06-H-51 EBG-06-C-T-51 EBG-06-H-T-51 EDG-01V-H-1-PNT10-51 EDG-01V-C-PNT10-51 EDG-01V-H-PNT10-51 H-8 Hydraulic Pilot Relief Valve

9 E-SERIES Interchangeability between Old and New Design Specifications and Characteristics The Specification are not changed except as Input Current vs. Characteristics. For details contact us. Mounting Inerchangeability There is an inerchangeability in the mounting dimensions, however, the outside shape and dimensions are changed as shown below due to pilot valve improvement and other modifications. Air Vent 3 Hex. Soc. Old : Design 50 New : Design 51 Manual Adj. Screw 3 Hex. Soc. Manual Adj. Screw 3 Hex. Soc. Adaptor 22 Hex. Solenoid Fully Extended Solenoid Air Vent 3 Hex. Soc. Fully Extended Places Fully Extended 216 Fully Extended The solenoid assembly current design comes in two types: 1 E design and 2 60 design. See the figure on the left for an external view of type. 1. See the figure on the right for type.2. Model Numbers Additional {kgf/cm 2 } EBG {20.4} (At Flow rate 50 L/min) EBG {35.7} (At Flow rate 100 L/min) In case where the upper limit of operating pressure is low or the upper limit of flow rate to be used is different from the specified maximum flow, please adjust and determine the setting pressure of the safety valve at the value calculated from the following formula. Hydraulic Pilot Relief Valves Setting pressure = (Operating pressure upper limit) +(Additional pressure indicated below) Hydraulic Pilot Relief Valve H-9

10 Hydraulic Relief Valves This valve is derived by combining a small, high-performance 1/8 proportional electro-hydraulic pilot relief valve with a specially developed low-noise relief valve. With this valve, it is possible to regulate the system pressure in proportion to the input current. Note that this valve is used in conjunction with the applicable power amplifier. Ratings Description Model Numbers EBG EBG Max. Operating { kgf/cm 2 } 24.5{250} 24.5{250} Max. Flow Min. Flow L/min L/min Adjustment Range { kgf/cm 2 } Refer to Model Number Designation Rated Current Coil Resistance Hysteresis ma Ω C:770 C:750 H:820 H: % or less 3% or less Repeatability 1% 1% Approx. Mass kg Model Number Designation EB G -03 -C -T -51 Type of Adj. Design Series Number Safety Valve Valve Size Mounting Range Standard KS Graphic Symbols EB : Proportional ElectroHydraulic Pilot Relief Valve G : Sub-Plate Mounting C : ~ 15.7 { ~ 160} H : ~ 24.5 { ~ 250} None : With Safety Valve T:Without Safety Valve 51(standard) 5107(Low pres. Control Type) 5183 (Ext.Drain Type) Note) Min, adjustment pressure shall be refered to the curves on page H-12 Without Safety Valve Sub-Plate Series Sub-plate Thread Size Approx. Numbers Model Numbers Rc(PT) Mass kg EBG-03 BGM ⅜ 2.4 BGM-03X-20 ½ 3.1 EBG-06 BGM ¾ 4.7 BGM-06X With Safety Valve 쪾 Please order the sub-plate using above the model number when you see it. 쪾 Sub-plates are those for pilot operated relief valves. For dimensions, see page C-9. The mounting surface should be used roughly 6-S after grind when you made it yourself. Attachment Applicable Power Amplifiers Mounting Bolts For stable performance, it is rrecommended that SEWON's applicable power amplifiers be used (for details see page E-22). Model Number : AMN-D-10 (For DC power supply) Model Numbers EBG-03 EBG-06 Soket Head Cap Screw M12 40L 4pcs M16 50L 4pcs H-10 Hydraulic Relief Valve

11 E-SERIES Instructions Low s A flow rate of 3 L/min or higher should be used to avoid preselected pressure instability. Safety Valve The pressure of the safety valve is preset at the value equal to the upper limit of the pressure adjustment range plus added pressure. Model Additional { kgf/cm 2 } Numbers EBG {20.4} (At Flow rate 50 L/min) EBG {35.7} (At Flow rate 100 L/min) In case where the upper limit of operating pressure is low or the upper limit of flow rate to be used is different from the specified maximum flow, please adjust and determine the Additional Additional setting pressure of the safety valve at the value calculated from the following formula. Setting pressure = (Operating pressure upper limit) +(Additional pressure indicated below) With Safety Valve Fully Extended 216 Lock Nut 10 Hex. Adj. Screw for Safety Valve 3 Hex. Soc. Without Safety Valve Mounting Surface EBG-03 : ISO 6264-AR-06-2-A EBG-06 : ISO 6264-AS-08-2-A "Q" Dia. Through "S" Dia. Spotface 4Places INC For other dimensions, refer to the without safety valve. Connector The direction can be altered to every 90 degree angles. The direction can be altered to every 90 degree angles. Cable Departure Cable Applicable Outside Dia. 8-10mm Conductor Area Not Exceeding 1.5mm 2 Manual Adj. Screw 3 Hex. Soc. INC Tank Port T Port P This port is not used. It is provided because of the common use of the body with the low-noise type pilot operated relief valve. One the sub-plate, plug the port which corresponds to this port. Hydraulic Relief Valves Air Vent 3 Hex. Soc. 3Places Mounting Surface (O-Ring Furnished) 6 Dia. Locating Pin Model Numbers A B C D E F H J K L N Q S U EBG EBG Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates C-9) in common use. Hydraulic Relief Valve H-11

12 Min. Adjustment Min. Adjustment Min. Adjustment Step Response(Example) These characteristics have been obtained by measuring on each valve. Therefore, they may vary according to a hydraulic circuit to be used. Trapped Oil Volume : 1L Viscosity : 30mm 2 /s{cst} Step Signal Step Signal Time Time Step Signal Step Signal Time Time H-12 Hydraulic Relief Valve

13 E-SERIES Input Current vs. Input Current Frequency Response Trapped Oil Volume : 1L Viscosity : 30 mm2 /s{cst} Frequency Viscosity vs. Oil Input Current Viscosity Phase(deg.) Phase(deg.) Gain Gain Pressue Pressue Frequency Phase Phase Gain Gain Temperature Viscosity Temperature Viscosity Hydraulic Pilot Relief Valves vs. Viscosity : 30 mm2 /s{cst} Phase(deg.) Phase(deg.) Hydraulic Relief Valve H-13

14 List of Seals and Pilot Valves! CAUTION When making replacement of seals, please do it carefully after reading through the relevant instructions in the Operator's Manual. Pilot Valve 10 Valve Model Numbers EBG-03-C-51 EBG-03-H-51 EBG-03-C-T-51 EBG-03-H-T-51 EBG-06-C Pilot Valve Model Numbers EDG-01V-C-1-PNT09-51 EDG-01V-H-1-PNT09-51 EDG-01V-C-PNT09-51 EDG-01V-H-PNT09-51 EDG-01V-C-1-PNT EBG-06-H-51 EBG-06-C-T-51 EBG-06-H-T-51 EDG-01V-H-1-PNT10-51 EDG-01V-C-PNT10-51 EDG-01V-H-PNT Note) For the details of pilot valves, refer to "Pilot Relief Valves" on page H List of Seals Part Numbers Item Name of Parts Qty. EBG-03 EBG O-Ring JIS B B-P32 JIS B B-P O-Ring JIS B B-P28 JIS B B-P O-Ring JIS B B-P9 JIS B B-P O-Ring JIS B B-P9 JIS B B-P9 2 NBR NBR 15 O-Ring AS AS Hs90 Hs90 16 O-Ring JIS B B-P18 JIS B B-P28 2 H-14 Hydraulic Relief Valve

15 E-SERIES Interchangeability between Old and New Design Specifications and Characteristics The Specification are not changed except as Input Current vs. Characteristics. For details contact us. Mounting Inerchangeability There is an inerchangeability in the mounting dimensions, however, the outside shape and dimensions are changed as shown below due to pilot valve improvement and other modifications. Old : Design 50 New : Design 51 Fully Extended A Fully Extended A Manual Adj. Screw 3 Dia Manual Adj. Screw 3 Dia. Air Vent 3 Hex. Soc. Pilot Valve Design Air Vent 3 Hex. Soc. 3 Places Pilot Valve Design Adaptor 22 Hex. Manual Adj. Screw 3 Dia See EDG-01(page H-9) for details of the Solenoid Ass y See EDG-01(page H-9) for details of the Solenoid Ass y M a n u a l Adj. Screw for Safety Valve 3 Hex. Soc. Model Numbers A B C D E (OLD) EBG (NEW) EBG (OLD) EBG (NEW) EBG Hydraulic Pilot Relief Valves Hydraulic Relief Valve H-15

16 10Ω-10Ω Series Hydraulic Flow Control and Relief Valves This flow control and relief valve is an energy-saving valve that supplies the minimum pressure and flow necessary for actuator drive. Since this valve controls the pump pressure by following the load pressure while keeping the differential pressure minimized, it serves as a low power consumption energy-saving, metre-in, controlled flow control valve. Further, since a temperature compensation function is incorporated, this valve provides consistent flow control without respect to the fluid temperature. Ratings Description Model Numbers EFBG EFBG Max. Operating 24.5 {250} 24.5 {250} Max. Flow L/min Metred Flow Adjustment Range L/min Min. Pilot 1~ ~ {15.3} 1.5 {15.3} Pilot Flow L/min at Normal at Transition Flow Controls Rated Current ma Coil Resistance Ω Differential { kgf/cm 2 } Hysteresis or less {7.1} 0.7 {7.1} 3% or less 3% or less KS Graphic Symbols Whth Proportional Pilot Relief Valve External Pilot Internal Pilot Repeatability 1% 1% C : 1.4~15.7 C : 1.4~15.7 Controls 1 Pres. Adj. Range Rate Current Coil Resistance 2 { kgf/cm 2 } ma Ω {14~160} {14~160} H : 1.4~24.5 H : 1.4~24.5 {14~250} {14~250} C : 890 C : 880 H : 970 H : Hysteresis 3% or less 3% or less Repeatability 1% 1% Approx. Mas kg Refer to page H-18~H-19 1.The specifications for pressure controls are applied to models with proportional pilot Whthout Proportional Pilot Relief Valve External Pilot Internal Pilot relief valve.(ex:efbg c- -51) 2.The maximum pressure adjustment range of the models without proportional pilot relief valves is 24.5.(Ex:EFBG ) H-16 10Ω-10ΩSeries Flow Control and Relief Valve

17 E-SERIES Model Number Designation EFB G C -E -51 Series Number Type of Mounting Valve Size Max. Metred Flow L/min Proportional Pilot Relief Valve Adjustment Range Pilot Connection Design Number EFB : Hydraulic Flow G : Subplate C, H : See Specifications None : Internal Pilot 51(standard) 5103 (160L/min) Control and Relief Valve Mounting E : External Pilot 5118 (standard) Attachment Mounting Bolts Model Numbers soket head cap screw Appilcable Power Amplifiers For stable performance, it is rrecommended that SEWON's applicable power amplifiers be used (for details see page H-22). EFBG-03 EFBG-06 M10 65L 4pcs M16 100L 4pcs Valve Model Numbers Power Amplifier Model Number For Flow Control For Pres. Control EFBG (E)-51 C EFBG (E)-5118 H AMN-D-10 AMN-D-10 Sub-plate Valve Model Sub-plate Model Thread Size Approx. Instructions Drain Back Numbers Numbers RC(PT) Mass kg Check that the drain back pressure does not exceed 0.2. EFBG-03 EFBGM-03Y-20 ¾ 6 EFBGM-03Z When Relief Valve Passing is Low in Control State EFBGM-06X EFBG-06 EFBGM-06Y-20 1¼ 16 Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a good machined finish. To avoid preselected pressure instability, use a passing flow rate of 15 L/min or higher. Further, check that the tank-line back pressure dose not exceed 0.5.{5.1kgf/cm 2 } Safety Valve Setting The pressure of the saffety valve is preset at the value equal to the upper limit of the pressure adjustment renge plus 2. Please adjust the pressure of the valve so preset to meet the pressure to be used actually. To lower the pressure setting, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten the lock nut. 10Ω-10ΩSeries Flow Control and Relief Valve 10Ω-10ΩSeries Flow Control and Relief Valve H-17

18 EFBG C- -51 Adj. Screw for Safety Valve 3 Hex. Soc. Lock Nut 10 Hex Dia. Through 17.5 Dia. Spotface 4 Places Tank Port T Vent Port V Inlet Port P Outlet Port A Connector Cable Departure Cable Applicable Outside Dia. 8~10mm Sub-Plate Connector Cable Departure Cable Applicable Outside Dia. 8~10mm M10 Thd. 18 Deep 4 Places 11 Dia. Through 17.5 Dia. Spotface 4 Places 29 Dia. 3 Places 17.5 Dia. 10 Deep 2 Places Dia. Rc 1/4 (PT1/4) (From Rear) 14 Dia. Rc1/4 (PT1/4) (From Rear) Rc "B" (PT "B") 6 Dia. Rc1/4 Thd. (RT1/4) (From Rear) Two Locating Pins 6 Dia. Mounting Surface (O-Rings Funished) Mass 16Kg Sub-plate Model Number EFBGM-03Y-20 B ¾ EFBGM-03Z-20 1 H-18 10Ω-10ΩSeries Flow Control and Relief Valve

19 E-SERIES EFBG C-51 Adj.Screw for Safety Valve 3 Hex. Soc. Lock Nut 10 Hex 17.5 Dia. Through 26 Dia. Spotface 4 Places Tank Port T 85.7 Vent Port V 35.7 Inlet Port P Fully Extended EFBG-06-C/H-- 조합 Sub-Plate Cable Departure Connector Cable Applicable Outside Dia.8~10mm Cable Departure Cable Applicable Outside Dia.8~10mm Drain Port Y Outlet Port A Pilot Port X Connector M16 Thd. 30 Deep 4 Places 17.5 Dia. Through 26 Dia. Spotface 4 Places Rc1/4 (PT1/4) (From Rear) 6.2 Dia. 14 Dia. Rc3/8 (PT3/8) (From Rear) 29 Dia. 3 Places 17.5 Dia. 10 Deep 2 Places Rc "J" (PT "J") 6.2 Dia. Rc1/4 Thd. (RT1/4) (From Rear) Two Locating Pins 16 Dia. 171 Mounting Surface (O-Rings Funished) Mass 23Kg Ω-10ΩSeries Flow Control and Relief Valve Sub-Plate Medel Numbers B D E F H J EFBGM-06X EFBGM-06Y ¼ 10Ω-10ΩSeries Flow Control and Relief Valve H-19

20 Step Response (Flow Controls) These characteristics have been obtained by measuring on each valve. Therefore, they may vary according to a hydraulic circuit to be used. Step Signal Step Signal Step Response ( Controls) Time Time These characteristics have been obtained by measuring on each valve. Therefore, they may vary according to a hydraulic circuit to be used. Step Signal Step Signal Time Time Trapped Oil Volume Trapped Oil Volume Input Current vs. Flow Input Current Input Current Input Current vs. Input Current Input Current H-20 10Ω-10ΩSeries Flow Control and Relief Valve

21 E-SERIES List of Seals, Pilot Valves, Solenoid Ass y! CAUTION When making replacement of seals, please do it carefully after reading through the relevant instructions in the Operator's Manual List of Seals R-R Part Numbers Item Name of Parts EFBG-03 Qty. EFBG-06 Qty. 38 O-Ring JIS B B-P9 5 JIS B B-P O-Ring AS (NBR, Hs70) 1 JIS B A-P O-Ring JIS B B-P28 6 JIS B B-P O-Ring JIS B B-G30 1 JIS B B-P O-Ring JIS B B-P O-Ring JIS B A-P Ω-10ΩSeries Flow Control and Relief Valve 44 O-Ring JIS B A-P O-Ring JIS B B-P32 1 JIS B B-P O-Ring JIS B B-P28 1 JIS B B-P44 1 Solenoid Ass y Valve Model Numbers 23 Solenoid Ass y Model Numbers 20 Solenoid Ass y Model Numbers EFBG- - -C-(E) EFBG- - -H-(E) E318-Y06M E318-Y06M Note) 1. For the details of seals for solenoid Ass y see page H The connector assembly GDM-211-B-11(Item 21) is not included in the solenoid assembly. 10Ω-10ΩSeries Flow Control and Relief Valve H-21

22 Power Amplifiers For Hydraulic Control Valves These are power amplifiers to be used exclusively to operate the electro-hydraulic proportional valves. Various type and models on available for a variety applications. Type Model Number Applicable to Control Valve Function An amplifier which is operated by a battery power supply(24 V). By giving the command of DC voltage to the amplifier, current in proportion to that voltage will flow in the solenoid DC Input For DC Power or Flow Control of the control valve in order to control pressure or flow rate. An external setting unit which makes the command voltage and a DC power supply(or a function generator) are 24 V DC AMN-D-10 (For 10ΩSol.) necessary, but if a variable resistor for external setting is only one, the internal power supply for amplifier can be used. Variable Resistor amplifier Valve Instructions The power amplifiers should be kept away from hot and humid conditions which may deteriorate some components of the power amplifiers. They also should be installed in the clean and dry place where the vibration is minmal. Please avoid to install the power ampllfiers in the complete enclosure or get them enclosed totally as they need to radiate the heat from semiconductors or ICs inside. Please use shielded wires for input signal transmission to prevent the amplifiers from any interference such as noise from outside. H-22 Power Amplifiers

23 E-SERIES Compact Power Amplifiers For 10ΩSeries Control Valve Power Amplifiers For 10Ω Series Control Valves Compact Power Amplifiers For 10Ω proportional solenoids. The power supply is 24 V DC. It uses a new circuitry to be slow to heat. Ratings Description Model No. AMN-D-10 Model Number Designation AMN -D -10 Type of Function DC Input Type Series Number Type of Function Design Number Max. Output Current 1A(10Ω Solenoid) AMN D : DC Input Type 10 Power Input(Max.) Input Impedance Max. Gain Dither Temperature Drift(Max.) Power Supply DC+10V 10 kω 1A/5V Vairable 0.2mA/ DC24V(DC20~30V) Applicable to Valve Name of Valve Pilot Relief Valves Relief Valves 10Ω-10Ω Series Model Numbers EDG-01 EBG-03 EBG-06 Max. Input Power Ambient Temperature External Setting Resistance 25W 0 ~50 C 1kΩ High Flow Series Flow Control and Relief Valves EFBG-03 EFBG-06 Approc. Mass 0.2 kg 4Dia. Through 2 Places SEWON Setting Adjuster [Example Diagram] Power Amplifiers Zero Adjuster Span Adjuster Detail of Terminal Board Power Terminal Number Name Terminal Board (Refer to table on the right) Indicator Lamp 1 Power Supply +24V 2 Power Supply 0V 3 Ground G 4 Internal Power Supply +12V 5 Input Signal IN 6 Input Signal COM 7 8 Out to Valve Solenoid SOL Power Amplifiers H-23