Vickers Servo Valves Servo Electronics - Eaton

1 656 Rev. 11/97 Amplifiers, Power Supplies, Function Modules, and ControllersVickers Servo ValvesServo Electronics Eaton Hydraulics, Incorporated 2000 All Rights ReservedIntroductionVickers amplifiers, power supplies, andfunction modules provide a convenientand economical package of electronicsfor closed loop Servo electronic components havebeen specially designed and assembledfor high reliability and improved ease ofuse. They can be applied in systemsutilizing Vickers servovalves andproportional Valves and may also beused to control competitors series power supplies and the SMC20H controller are panel mounted. EMseries amplifiers and function modulesplug into fully compatible slots in theEMRS-A-11 and EMP-A-20 powersupply units. The EEA series amplifiersare designed for use in a standard accurate and repeatable systemperformance with assured componentcompatibility, trust Vickers Servo Amplifier with PID3.. EM-K-10 Ramp Module6.. EM-J-10 Programmer Module10.. EMRS-A-11 Power Supply Unit13.

2 EMP-A-20 Power Supply Unit16.. EEA-PAM-591 Amplifiers18.. EEA Accessory Products22.. SMC 20H Two-Axis Hydraulic Position Controller23.. 3EM-D-30 Servo Amplifier with PIDCURRENT LOOPINPUT 2 CURRENT LOOPINPUT 1 VOLTAGE AMPINPUT 2 VOLTAGE AMPINPUT 1 RATIOVOLTAGE AMPSUMMINGJUNCTION3 Circuit and Connections++ VOLTAGE AMP OUTPUTPOWER STAGE PRE-AMP input 1 POWER STAGE PRE-AMP input 2 POWER STAGE PRE-AMP OUTPUTV45711108945612 OPTO-ISOLATEDOUTPUTREGULATORPOWERSTAGECU RRENTFEEDBACK312 POWERSTAGEPRE-AMPS3 2 DIFFERENTIATORS3 151K51 KVALVECOIL+20 VCOMMON 20V+12 VCOMMON 12 VACRESETSATURATIONLIMITERINTEGRATORPGAIN INPUTBUFFERPROPORTIONALDGAINDGAINRANGEGA IN= 1S3 4 ERROR ADJINPUTBIASADJ100KS1 2BS1 1250100KS3 6100K100K10KS3 5S3 3AS1 3 BHIGHLOWOFFIGAINRANGES2 1S2 3S2 2EM-D-30 CONTACTS TERMINAL CARDEMP-A-20, EMRS-A-11 TERMINALSINTEGRATORRESETERROR LIMITALARMCOMMANDEITHER 10 :15 :1+LIMITER ADJ LIMITER ADJGAINIHIGHLOWOFFS2 4S2 6S2 5 DIGAINABADITHER ADJBIASADJO perating DataThe EM-D-30 amplifier module is anextended version of the EM-D-20amplifier.

3 It is functionally and pin for pindownward of current limiters and biasin the output stage allows the unit todrive single-polarity and bipolar servovalves as well as other currentcontrolled selection of the appropriate switches,inputs can be inverted in a number ofcombinations, including the ratioing oftwo inputs and the introduction of a newcurrent loop following error or in-position can be monitored by means of anadjustable onboard detection circuitwhich includes an opto-coupled :Each of the four stages of the EM-D-30amplifier inverts the input polarity. Valveoutput current can be inverted by inputinversion switches S1-1 and :When pin 11 is grounded, the integratorreset function is activated causing theintegrator amplifier output to maintainzero. An open on pin 11 restores reset ON , the P and D amplifiers still function normally. Vickers , Incorporated 1997 All Rights ReservedSpecificationsPower StageOutput (pins 1 and 2) 600 mA into 20 ohm loadInputs 1 and 2:Range 10V DCAbsolute maximum 36V DCBias range 400 mAGain range100 to 1600 mA/voltDither range0 to 60 mADrift due to temperaturet0,4 mA/ C ( mA/ F) at maximumgainDrift versus supply mA/V at maximum gain at nullWarm-up drift (after 30 minutes) mAFrequency response3 dB down at 6 kHz, maximum gainPower Pre-amp StageOutput (pin 7) 6V DC at 5 mAGain1 to 15 V/VLimiting 0V DC to 6V DCVoltage Amplifier StageOutput (pin 6) 10V DC at 2 mAInputs 1 and 2:Range 10V DCAbsolute maximum 36V DCGain ranges(ratio potentiometer centered).

4 Linear, low to V/VLinear, high to V/VIntegrating, low to V/sec-VIntegrating, high to 133 V/sec-VDifferential, low to 20 V-sec/VDifferential, high range10 to 150 V-sec/VCurrent loop0 to 20 mA inputDrift due to V/V at maximum gainDrift versus supply V/V at maximum gainWarm-up drift (after 30 minutes) DCDrift versus time (after 24 hours) DCError detectionOpto-coupled alarm output, error limitadjustable from 0 to 10V DCMass (weight)2,2 kg (1 lb)5 Installation Dimensionsmillimeters (inches)30,0( )127,0( )1,57( )3,0( )Minimumclearance9,7( )OUTPUT BIASDITHER+LIMITGAIN LIMITINPUT BIASPGAINIGAINDGAINRATIOERRORS1S2S3AB123 456 OPEN123456 OPEN123C1C2C389,0( )32,5( )32,5( )62,0( )Polarizing slot Vickers , Incorporated 1997 All Rights ReservedEM-K-10 Ramp ModuleFirststageoutputRampno. 1inputRampno. 2inputExtendedrampinputExternalcapacitor OutputInput51 KLimiterRampno. 1 Rampno. 2 OutputtrimEMRS-A-11 or EMP-A-20 power supply unit terminalsEM-K-10 Circuit and ConnectionsRamp module contactsOperating DataUsageThe EM-K-10 ramp module convertsstep changes in input signals to rampedsignals for smooth transition from oneoperating level to time can be adjusted fromvirtually instantaneous response to 5seconds for full range.

5 Extended ramptimes can be obtained with additionalexternal capacitors. See specificationsand curves for used with an EM-D-30 servoamplifier, the ramp module provides ameans of controlling speed inpositioning systems, acceleration anddeceleration in speed control systems,and the rate of pressure change inpressure control EM-K-10 consists of a linear circuitcapable of accepting 0 to 10V DC stepinput voltage levels. Two ramp ratepotentiometers allow adjusted ramprates between and seconds pervolt output change. Extended ramprates up to 25 sec/V output change canbe obtained by the addition of externalmylar or similar quality capacitors with a50 volt or higher rating. The ramp ratepotentiometers are selected externallyby the use of a simple diode steeringcircuit or contact addition to the module mounted ramprate potentiometers, provision has beenmade for the addition on an infinitenumber of externally located ramp voltage 10V to +10V DCInput impedance51k OhmsOutput voltage 10V to +10V DCOutput load impedance5k Ohm minimumOutput current2 mA maximumRamp rate to sec/V output change (withexternal capacitors)Independent ramp rate adjustmentsTwo potentiometers on moduleInput/output relationship 1% maximum input voltageExtended ramp ratesUp to 25 sec/V output change (withexternal capacitors)Multiple ramp ratesTerminal available for external connectionof additional potentiometers and relaysAmbient temperature range0 to 50 C (32 to 122 F)Mass (weight)0,45 kg (1 lb)Extended Ramp RangesRamp rates can be extended beyond 2 MFD by adding external capacitorsbetween terminals 1 and 2.

6 The chartshows recommended total capacitancevalues. Subtract 2 MFD from reading toobtain external capacitor should be mylar or similarquality with 50V or higher range10 TOTAL CAPACITANCE VALUE MFD11001101000,1 RAMP RATE sec/V0,01(fastest time)Maximum potentiometer setting(slowest time)5% potentiometer setting(2 MFD)Internal capacitor only Vickers , Incorporated 1997 All Rights ReservedInputCommonExternalcapacitor(opt ional)Application CircuitExamplesSingle Ramp Rate CircuitDPositive and negative input signals areramped up and down at one rate. Rateis adjustable by ramp rate no. Ramp Rate Circuit with DiodeSteering LogicDA positive-going input signal is rampedup at a rate adjusted by ramp rate no. negative-going input signal is rampeddown at a rate adjusted by ramp rateno. 2 and External RampAdjustments with Relay LogicD1CR energized: A positive- ornegative-going input signal is rampedup or down at a rate adjusted by ramprate no. 1 energized: A positive- ornegative-going input signal is rampedup or down at a rate adjusted by ramprate no.

7 2 energized: A positive- ornegative-going input signal is rampedup or down at a rate adjusted by energized: A positive- ornegative-going input signal is rampedup or down at a rate adjusted by number of ramp rates may beobtained by adding additional resistoror potentiometer (optional)EM-K-10D-1D-2(For D-1 or D-2 diodes, useMotorola or General InstrumentIN 4003 or similar)InputOutputCommonExternalcapacit or(optional)EM-K-102CR1 CRP1R1P2R24CR3CR4CR3 CRP1 and P2 potentiometers:10,000 ohm, 1/2 watt (each)R1 and R2 resistors:470 ohm, 1/2 watt (each)OutputEMRS-A-11 or EMP-A-20 power supply unit terminalsRamp module contactsEMRS-A-11 or EMP-A-20 power supply unit terminalsRamp module contactsEMRS-A-11 or EMP-A-20power supply unit terminalsRamp module contacts9 Installation Dimensionsmillimeters (inches)88,9( )9,5( )62,7( )76,2( )9,6( )3,0( )10,0( )3,0( )MinimumclearancePerformance ExampleThe following example chartsperformance of the EM-K-10 with ramprate potentiometers no. 1 and no.

8 2connected with diodes as shown onpage rate potentiometer no. 1 is set at5% ( sec/V). Potentiometer no. 2 isset at 55% ( sec/V).Ramp time = Ramp rate x Volts changeFirst ramp time= sec/V x 10 volts= 5 secondsSecond ramp time = sec/V x 15 volts= secondsThird ramp time= sec/V x 5 volts= seconds 505100123456789101112131415 505100123456789101112131415 input voltsOUTPUT voltsTIME secondsTIME secondsRamp 1 Ramp 2 Ramp 15 secAS2 MFD AMP1C AMPRAMP 1 RAMP 2 Vickers , Incorporated 1997 All Rights ReservedEM-J-10 Programmer ModuleCircuit and Connections500 WEM-J-10K1500WK2500WK3500WK4500WK5K1R110 KWK2R210 KWK3R310 KWK4R410 KWK5R510 KWProgrammer module contactsEMRS-A-11 or EMP-A-20 power supply unit terminals+14V DC220 WOperating DataUsageThe EM-J-10 programmer moduleprovides up to five preset commandsignals. When used with an EM-D-30servo amplifier, the module provides ameans of presetting and selecting avariety of positions, speeds, or forces inclosed loop Servo systems.

9 This modulemust be installed in either a single-cardEMRS-A-11 or four-card EMP-A-20power supply programmer module contains fivepotentiometers, five DC reed relays indual inline packages, pilot lights for eachrelay, and an internal power source forthe relay is energized when one side of itscoil is connected to ground externally bymeans of a switch or contact potentiometer associated with therelay is then connected to the outputterminal and sets the output signal one command signal at a time canbe delivered by the module, even if twoor more relays are , dual inline, reed typeRelay coil current28 mASupply voltage+20V DC nominalRelay contact maximum rating500 mA, 100 VPotentiometer type10k Ohms, 22 turnsPotentiometer resistance elementConnected in parallelPotentiometers wipersConnected in seriesAmbient temperature range0 to 50 C (32 to 122 F)Mass (weight)0,45 kg (1 lb)Application Circuit ExampleServo Control withFive Preset PositionsThis circuit controls an SM4 servovalveand uses an EM-J-10 programmermodule along with an EM-D-30 servoamplifier, EMP-A-20 power supply unit,and a feedback +12V 12V123456 ClosedOpenCustomer-furnishedcontacts Vickers , Incorporated 1997 All Rights ReservedInstallation Dimensionsmillimeters (inches)127,0( )21,6( )88,9( )31,8( )3,0( )Minimumclearance9,5( )D1D2D3D4D5D6D7D8D9D10D1113 EMRS-A-11 Power Supply UnitCircuit and Connections NGU2 Common 12V+12V+19V 19 VMDL 1/4fuseU1D1(1 amp) +ACAC115V AC60 Hz inputT1TB1C1C2 CommonDitherJA AC 1 AcurrenttransformerC1 and C23600 F.

10 40 VEMRS-A-11 Operating DataUsageThe EMRS-A-11 power supply unit isdesigned for use with Vickers electroniccontrol modules in single axiselectrohydraulic control power supply unit provides themeans for mounting one module,supplying it with the proper excitationvoltages, and connecting it to externalcircuit components through a terminalstrip. In addition, a highly regulated 12V DC power supply circuit isincluded for excitation of command andfeedback circuit components. Aseparate terminal strip is provided forconnections to this circuit. Vickers , Incorporated 1997 All Rights ReservedSpecificationsInput TB1 input voltage (no load)115V ACInput frequency60 HzCircuit protection3AG 1/4 amp slow blowfuse on input power lineMain Supply TB2 Output voltage (no load) 19V DCOutput current per DCMaximum peak to peakLine regulation (10% line change)10%Load regulation (0 to current change)18%Required Supply TB3 Output voltage 12V DC, DCOutput current per leg150 mAShort circuit current regulation ( 10% line change) regulation (0 to current change) change over full rangeTemperature coefficient2mV/ CWarm-up drift (after 30 minutes) temperature range0 to 65 C (32 to 149 F)Mass (weight)1,14 kg ( lbs)15 Installation Dimensionsmillimeters (inches)177,8( )165,1( )139,7( )152,4( )100,1( )9,5( )Minimumclearance6,3( )6,3( )5,56( )