PROPORTIONAL PRESSURE CONTROL VALVES AND SYSTEMS.

Transcription

1 PROPORTIONL CONTROL VLVES ND SYSTEMS : C E R T I F I E D C O M P N Y

2 Proportional Pressure Control Valves The Elwood Proportional Pressure Control Valves are pilot operated Relief and Reducing Valves utilizing the spindle design. The valves have a three piece construction consisting of a top plate, upper body and lower body. The valves also contain a spindle, reversible-replaceable seat, a four position orifice plug and a pilot head with proportional force controlled solenoid. REDUCER Electrical Proportional Pilot Electrical Proportional Pilot RELIEF Main Spindle Main Spindle Seat Seat Four Position Four Position INLET OUTLET OUTLET INLET Remote Pilot Conn. External Drain Conn. Remote Pilot Conn. External Drain Conn. System pressure is adjusted in relationship to a current signal to the proportional solenoid. For the valve s pressure setting, a pressure balance on the main spindle allows the spring to hold the valve in a closed position (relief valve) or an open position (reducing valve) - refer to valve cutaways above. When system pressure working on the pilot poppet exceeds the solenoid force, a pilot flow is established to the external drain. This pilot flow creates a differential force on the main spindle because of a pressure drop through the orifices installed in the pilot. n electronic amplifier card, or adaptive control module, controls the current to the proportional solenoid in relationship to a control voltage (0 to +10V). The amplifier card is available as Open Loop or Closed Loop (with use of a pressure transducer). The daptive Control Module is used in closed loop when extreme accuracy is required. NOTE: The adjustable orifice plug allows a pre-pressure drop to occur in the valve allowing the main spindle to create a larger opening in the sealing area, adding to the life of the valve.

3 Technical Data HYDRULICS ELECTRICL Maximum Operating Pressure Hydraulic Media Viscosity Range at 100º F (38º C) Maximum Pressure Rating Minimum Set Pressure Rating: 1500 PSI (103 bar) 3000 PSI (07 bar) 6000 PSI (414 bar) Sizes REDUCER RELIEF HWCF, 97/3 Soluble Oil in Water, Synthetics, Mineral Oils and Kerosene 0 SSU (1. Cst.) SSU (385 Cst.) 3 RTINGS 1500 PSI (103 bar), 3000 PSI (07 bar), 5000 PSI (345 bar) 50 PSI (17 bar) 50 PSI (17 bar) 500 PSI (34 bar) Flow Rate - GPM (LPM) 300 PSI (0 bar) 450 PSI (31 bar) 550 PSI ( PSI (07 bar) Nominal Maximum Nominal Maximum - 1/" C - 3/4" D PSI (17 bar) E - " Maximum Pressure for E Valve is 5000 PSI (345 bar) 11 (4) 30 (114) 80 (303) 180 (681) 15 (57) 50 (190) 10 (455) 00 (757) 15 (57) 60 (7) 15 (473) 50 (946) Note: t 5000 PSI (345 bar), line size must be larger for maximum flow Fluid Temperature Range HWCF 35 to 150º F ( to 66º C) Mineral Oil 5 to 150º F (-15 to 66º C) Recommended Filtration Micron Pilot Filter provided Repeatability Closed Loop with Dither ± 10% Closed Loop with Dither ± 0.5% (± 0.07% with Electronic daptive Control) Hysteresis (test data for C size valve) with Dither ±.5% Response Time / Step Change (test data for C size valve) Drain 3000 PSI (07 bar) Type of Supply PSI (55-17 bar) PSI ( bar) PSI (8-55 bar) 0.5 GPM (LPM) Direct Current (DC) Minimum Control Current #16 Solenoid #0 Solenoid (3000 PSI) 150 ma (6000 PSI) 175 ma Maximum Control Current 1400 ma 1600 ma Coil Resistance Coil Rating 10.6 ohms Continuous Maximum mbient Temperature 175º F (79º C) Electrical Connection Insulation Hirshmann Type DIN Exceeds NEM Class B Requirements 0 (76) 85 (3) 190 (719) 300 (1136)

4 Solenoid Power Draw Curve INPUT CURRENT VS. Model C, 3000 PSI, Size 16 Solenoid TEST #1.395 MP TYPICL VLVE RESPONSE Current Input From Sq. Wave Gen..75 MP.330 MP IN PSI IN BR 790 PSI (51 Bar) MSEC. TEST #.478 MP 17.8 MS 13 MS 1530 PSI (99) Bar) 50.8 MP 500 PSIG INLET (1.0 VOLTS ~ = 1000 PSIG).334 MP B : 0. VOLTS / DIVISION B: 0.5 VOLTS / DIVISION INPUT CURRENT IN MPS Reducer Pressure response to current input Relief Pressure response to current input (reflects differential adjustment of 150 PSI 910 PSI (59 Bar) MSEC MS PSIG INLET 14.3 MS 1850 PSI (119) Bar) B Note: Test data shown is with a C size reducer at 500 PSI. CIRCUIT: The test results shown reflect the pressure response of the C size Proportional Reducer/Relief ssembly reacting on a three gallon volume of fluid. The input current was supplied in a square wave form from a frequency generator. RESULTS: The above graphs illustrate the current (Channel ) and pressure (Channel B) wave forms as displayed on a storage type oscill scope. NOTE: It is recommended that the hydraulic supply pressure be maintained at a level of 15% higher than the maximum set pressure to obtain optimum performance from the valve.

5 Dimensional Data Dual Package Single Valve OPTIONL ELECTRICL U BIS W E FILTER U F LIFTING EYEBOLTS FILTER *D O *C HYDRULIC BIS OPTIONL BOTTOM FLNGE MOUNT FILTER T G B N H P M S J K L PR CRD/CRL inch mm B C D E F G H J K L M N O P R S T U W Required for Removal *C: 5000 PSI (345 Bar) model *D: 1500 PSI (105 Bar) & 3000 PSI (10 Bar) models * *W P R H B C D L N M O LIFTING EYEBOLTS K MODEL C MODEL D MODEL E inch mm inch mm inch mm B C D E F G H J K L M N O P R S T U 1/-13 UNC 3/4-10 UNC 1-8 UNC W E U T J S G F Required for Removal *C: 5000 PSI (345 Bar) model *D: 1500 PSI (105 Bar) & 3000 PSI (10 Bar) models FILTER PROPORTIONL SOLENOID BIS (PORT 4) (PORT 4) 1 PSI MXIMUM DRIN.N.S. SYMBOL PROPORTIONL PILOT VLVE.N.S. SYMBOL PROPORTIONL PILOT VLVE 3B 3C 3B 3C REDUCER RELIEF TNK SUPPLY TO SYSTEM 6C 5 6C 5 PROPORTIONL DUL PCKGE SCHEMTIC 1 1 6B 6B EXHUST (IN) DRIN (IN) REDUCED (OUT) VLVE SCHEMTIC PROPORTIONL RELIEF VLVE VLVE SCHEMTIC PROPORTIONL REDUCER VLVE

6 NOTES: Open Loop Control Description: The Model accepts command signals in several formats and provides current to operate the valve solenoid. The module is equipped with an integral power supply operating from line voltage. n analog meter indicates the command signal in percent and an analog meter indicates the output current in amperage. The Model provides output current proportional to the command signal. The Model can be sub-panel mounted utilizing the Model enclosure or may be rack mounted using the Model enclosure. SPECIFICTIONS Supply Voltage 10/40 Volts, 50/60Hz, /1 mps Output Current 0 to mps Panel Potentiometer 1 turn (70 ) 5,000 ohm Remote Potentiometer 10 turn, 5,000 ohm External Voltage Command 0-10 volts CMRR 60Db at 60Hz Common mode voltage 5 volts External Current Command 0-50 milliamps Frequency Response 0 Kilohertz Command signal analog meter 0 to 100 percent Output current analog meter 0 to mps Power on LED indicator Size 5.5" H x 4.5" W x 8" D Closed Loop Control Description: The Model accepts a command signal and provides current to operate the valve solenoid. The module is equipped with an integral power supply operating from line voltage. n analog meter indicates the command signal in percent and an analog meter indicates the output current in amperage. The Model provides a flow proportional to the command signal. The Model can be sub-panel mounted utilizing the Model enclosure or may be rack mounted using the Model enclosure. SPECIFICTIONS Supply voltage 10/40 Volts, 50/60Hz, /1 mps Output Current 0 to mps Command SIGNL Panel Potentiometer 1 turn (70 ) 5,000 ohm Remote Potentiometer 10 turn, 5,000 ohm External Voltage Command 0-10 volts CMRR 60Db at 60Hz Common mode voltage 5 volts External Current Command 0-50 milliamps Resolution 1 PSI Frequency Response 0 Kilohertz TRNSDUCER Excitation 10 Vdc Input Sensitivity 30 mv full scale UXILIRY OUTPUT Pressure 0-10 Vdc full scale at 5 m INDICTORS Command signal analog meter 0 to 100 percent Output current analog meter 0 to mps Power on LED indicator Size 5.5" H x 4.5" W x 8" D

7 Ordering Data Proportional Pressure Control PR Proportional Pressure Control 4 V D.C. 1.5K 3K RNGE (17-103) (17-07) 6K (34-414) PSI (Bar) SP BP 1 PORT LOCTION Side Port (Standard) 1 Bottom Port (Optional) 1 Dual Package Single Proportional Pressure Control Valve Bottom Port is Standard C D E C D E REDUCER FLOW - GPM (LPM) 9-15 (34-57) ( ) ( ) ( ) RELIEF FLOW - GPM (LPM) 0-0 (0-76) (55-35) (475-70) ( ) STD. SIZE INCH (MM) 1/ (19.05) 3/4 (31.8) 1-1/4 (50.8) (76.) STD. SIZE INCH (MM) 1/ (19.05) 3/4 (31.8) 1-1/4 (50.8) (76.) PORT FLNGE CODE 3 INCH (MM) 3/4 (19.05) 5 1-1/4 (31.75) 8 (50.8) 1/ (76.) MM Secify Size # See Chart Belwo For Optional Sizes # OP CL Open Loop Closed Loop DC daptive Control TR Transducer Included in CL and DC FP SP Front Panel Mount Sub Panel Mount RD RL TYPE OF VLVE Reducer Relief HB EB TYPE OF BIS Hydraulic Electronic WS NS TYPE OF CONNECTION Soc. Wld. Straight NPT Straight M Manifold Mount SE SE O-Ring Straight Thread Connection SCI PCI Optional Serial Computer Interface Optional Parallel Computer Interface PR - CRL /CRL - HB - 3K 5 WS - SP - CL - TR - SP - SCI REQUIRED ONLY FOR DUL PCKGE (Mounted on Single Manifold) MODEL C D E 1/ (1.7) 3/4 (19.05) # PORT SIZES VILBLE - INCH (MM) 1 (5.4) a + 1-1/4 (31.8) 1-1/ (38.1) a + (50.8) -1/ (63.5) a + ELECTRICL OPTIONS 3 (76.)

8 Packed Spool Directional Control Valves Directional Valve for a range of applications Up to 46 GPM (3 GPM nominal) 3000 PSI (07 bar) and 6000 PSI (414 bar) ir Solenoid Operated 3-position spring centered -position spring offset -position momentary contact Poppet Type Directional Control Valves Capacities to 1600 GPM (6057 LPM) 3000 PSI (07 bar), 4500 PSI (310 bar) and 6000 PSI (414 bar) models are available Built-in flow control Manifold mounted, NPT, socket weld or flanged Proportional Pressure Control System Controlled Pressure Ranges: Brochure PSI (7 bar) to 1500 PSI (103 bar) 480 PSI (33 bar) to 3000 PSI (07 bar) 580 PSI (40 bar) to 6000 PSI (414 bar) FLOW RTE: To 1000 GPM (3785 LPM) Modular ISO-Lock Isolates manifold mounted directional control valves Reduces maintenance time - replace Directional Valves without depressurizing and draining hydraulic system. Single lever operation to close all four ports (P, T,, B). Cylinders can remain under the external load without having to be blocked. Lockable per OSH safety standard NFP DO /CETOP and special mounting patterns available Brochure 395 Descaling & Pump Unloading Valves Capacities: 3000 PSI (07 bar) 6000 PSI (414 bar) 6000 GPM (710 LPM) Connection Sizes: 1-1/4" to 10" Brochure 104 ccumulator Systems Brochure 50 Descaling Mill Systems Presses Controls Level Pressure Pump Sequencing Ballast Charging Designed to your specifications Descaling Valves - Spindle Brochure 18 DIN Brochure 19 Pump Unloading Valves Brochure 13 Brochures 10, 105 & 380 ELWOOD CORPORTION 195 West Ryan Road Oak Creek, Wisconsin US Phone: Fax: /06 - Brochure 104 Rev.