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Theory of Operation

Sorensen DCS Series 1kW and 1.2kW Supplies

3-2

M362500-01 Rev K

Figure 3-1 Simplified Full Bridge Converter

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Содержание Sorensen DCS-E Series

Страница 1: ...es Operation Manual This manual covers models DCS8 125E DCS33 33E DCS60 18E DCS150 7E DCS8 140E DCS33 36E DCS60 20E DCS150 8E DCS10 100E DCS40 25E DCS80 13E DCS300 3 5E DCS10 120E DCS40 30E DCS80 15E...

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Страница 5: ...e used herein for identification purposes only Notice of Copyright DCS E 1kW Series DCS E 1 2kW Series DC Power Supplies Operation Manual 2006 2008 AMETEK Programmable Power Inc All rights reserved Ex...

Страница 6: ...Contents Sorensen DCS Series 1kW and 1 2kW Supplies viii M362500 01 Rev K Email sales ppd ametek com service ppd ametek com Web www programmablepower com...

Страница 7: ...are removed Qualified personnel must use extreme caution when servicing this equipment Circuit boards test points and output voltages also may be floating above below chassis ground 1 1 The equipment...

Страница 8: ...US TO HUMAN SAFETY may be normally generated on the output terminals The customer user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent co...

Страница 9: ...Sorensen DCS Series 1kW and 1 2kW Supplies Contents M362500 01 Rev K xi This page intentionally left blank...

Страница 10: ...y AMETEK is installed or operated contrary to the instructions of AMETEK is opened modified or disassembled in any way without AMETEK s consent or is used in combination with items articles or materia...

Страница 11: ...Sorensen DCS Series 1kW and 1 2kW Supplies Contents M362500 01 Rev K xiii This page intentionally left blank...

Страница 12: ...TION AND OPERATION 2 1 2 1 General 2 1 2 2 Initial Inspection 2 1 2 3 Installation 2 1 2 3 1 Input Voltage Selection 2 1 2 3 2 Input Line Impedance 2 2 2 3 3 Ventilation Requirements 2 2 2 3 4 Output...

Страница 13: ...Remote Programming of Output Voltage and Current Limit 2 18 2 11 1 Programming With External Voltage Sources 2 18 2 11 2 Programming With an External Resistance 2 20 2 11 3 Programming With an Externa...

Страница 14: ...Contents Sorensen DCS Series 1kW and 1 2kW Supplies xvi M362500 01 Rev K SECTION 5 PARTS LISTS 5 1 5 1 General 5 1 5 2 Parts Ordering 5 1 5 3 Parts Lists 5 2...

Страница 15: ...nsen DCS Series 1kW and 1 2kW Supplies Contents M362500 01 Rev K xvii LIST OF FIGURES Figure 2 1 DCS Series Power Supply 2 4 Figure 2 2 Diode Connection 2 9 Figure 3 1 Simplified Full Bridge Converter...

Страница 16: ...Contents Sorensen DCS Series 1kW and 1 2kW Supplies xviii M362500 01 Rev K Figure 4 1 Trimpot Locations 4 4...

Страница 17: ...Table 2 1 Wire Size and Length 2 8 Table 4 1 Troubleshooting Guide 4 2 Table 5 1 DCS 1kW and 1 2kW Fuse Ratings 5 2 Table 5 2 DCS 1kW Parts Lists by Model Number 5 2 Table 5 3 DCS 1kW Parts Lists 5 3...

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Страница 19: ...tage is regulated at the selected value while the output current varies with the load requirements In constant current mode the output current is regulated at the selected value while output the volta...

Страница 20: ...ased current or voltage High frequency switching technology allows high power density providing increased power output in a small light package Remote sensing to compensate for losses in power leads A...

Страница 21: ...6V 0 08A 4 0V 0 045A 7 0V 0 018A OVP Adjustment Range 0 4 8 8V 0 5 11V 1 0 22V 1 65 36 3V 2 44V 2 5 55V 3 66V 4 88V 5 110V 7 5 165V 15 330V 30 660V Output Noise Ripple V 3 Rms p p 20Hz 20MHz 4 mV 60 m...

Страница 22: ...V 0 05A 7 0V 0 021A OVP Adjustment Range 0 4 8 8V 0 5 11V 1 0 22V 1 65 36 3V 2 44V 2 5 55V 3 66V 4 88V 5 110V 7 5 165V 15 330V 30 660V Output Noise Ripple V 9 Rms p p 20Hz 20MHz 5 mV 60 mV 5 mV 60 mV...

Страница 23: ...and Interlock TTL compatible input Contact Closure 12 250 Vac or 12 130 Vdc Switching Frequency Nominal 70 kHz typical 140 kHz output ripple Analog Programming Linearity Typical error is less than 0 5...

Страница 24: ...0 257 diameter holes on 0 5 centers 1 4 hardware Two 0 191 diameter holes on 0 4 centers 10 hardware Models DCS E 150V through DCS 600V Connector type Six pin Amp Universal Mate N Lok connector Chass...

Страница 25: ...mage Reinstall cover 2 3 Installation 2 3 1 Input Voltage Selection Before using the DCS power supply the correct AC input voltage must be selected and an appropriate line cord and plug attached or ho...

Страница 26: ...t full load 2 3 2 Input Line Impedance The maximum input line impedance for operation at full rated output is 0 5 ohm Higher source impedances can be tolerated by raising the input line voltage or by...

Страница 27: ...r supply is designed to fit in a standard 19 equipment rack When installing the unit in a rack be sure to provide adequate support for the rear of the unit while not obstructing the ventilation inlet...

Страница 28: ...Installation and Operation Sorensen DCS Series 1kW and 1 2kW Supplies 2 4 M362500 01 Rev K Figure 2 1 DCS Series Power Supply...

Страница 29: ...voltage mode when illuminated 9 Output Voltage Control Multi turn potentiometer used to adjust the output voltage in local mode 10 Current Mode LED Indicates operation in current mode when illuminate...

Страница 30: ...o pin 11 for local operation and remote current source programming 11 Front Panel Current Control remote programming Input for 0 1mA external programming signal Jumpered to pin 10 for local operation...

Страница 31: ...ated better than 0 5 accuracy to the rear output terminals observing correct polarity Rotate the CURRENT control 1 2 turn clockwise Slowly rotate the VOLTAGE control clockwise and observe both the int...

Страница 32: ...e impedance and coupling effects which can degrade the power supply performance use leads of the largest gauge and shortest length possible Wire Size AWG Model 2 4 6 8 10 12 14 16 18 8V 19 12 10V 19 1...

Страница 33: ...diode and cathode connections be made as follows Connect a blocking diode in series with the output to protect the power supply Connect cathode of the freewheeling diode to the cathode of the blocking...

Страница 34: ...regulation at the power supply output terminals the sense pins are connected to pins 25 positive output and 24 return of connector J3 For remote sensing the local operation jumpers are removed and pin...

Страница 35: ...availability 2 7 Single Supply Operation Local Mode To operate the DCS power supply in local mode first install the unit and connect the load following the instructions in Sections 2 1 to 2 6 Check t...

Страница 36: ...to be obtained 2 8 1 Series Operation Series operation is used to obtain a higher voltage single output supply using two or more single units Connect the negative terminal of one supply to the positiv...

Страница 37: ...a preset voltage limit is exceeded A red LED on the front panel indicates when the OVP circuit has been activated Resetting the OVP circuit after activation requires removal of the over voltage condit...

Страница 38: ...connect the voltage source between pins 3 positive and 12 negative Set the programming source voltage to maximum 3 Turn the unit on and adjust the output to the desired trip voltage 4 Slowly reduce th...

Страница 39: ...al potentiometer use the following procedure 1 With the unit off and disconnected from its AC source remove the cover set switch SW1 8 open and check that switch SW1 4 is closed default factory settin...

Страница 40: ...he unit off and disconnected from its AC source remove the cover and set switches SW1 4 and SW1 8 closed default factory setting 2 Using a small flat bladed screwdriver through the OVP ADJUST hole in...

Страница 41: ...tput For TTL operation a logic level signal between pins 14 positive and 2 return of connector J3 determines the output conditions TTL LOW OUTPUT ON TTL HIGH OUTPUT OFF For AC or DC operation an input...

Страница 42: ...REMOTE CURRENT LIMIT 5V OR 10V PROGRAMMING OF SELECTS REMOTE RESISTIVE OVP PROGRAMMING SCALE SELECTS REMOTE VOLTAGE LIMIT 5V OR 10V PROGRAMMING OF SELECTS REMOTE OVP PROGRAMMING SCALE NOT USED NOT USE...

Страница 43: ...SW1 7 Off Open SW1 4 On Closed SW1 8 On Closed Switch SW1 and Connector J3 Configuration for 0 10V Programming of the Output Voltage J3 sense line OVP and current control jumpers shown set for local o...

Страница 44: ...1 to the counterclockwise end of the 5k potentiometer and connect the tap and clockwise end of the potentiometer to pin 12 Adjusting the tapped resistance from 0 5k will vary the output voltage from 0...

Страница 45: ...Limit J3 sense line OVP and voltage control jumpers shown set for local operation 2 11 3 Programming With an External Current Source The output voltage and current limit can be programmed using an ex...

Страница 46: ...ector J3 Connect the external current source between pins 11 positive and 12 return Varying the current source from 0 1mA causes the current limit to vary from 0 100 of rated maximum SW1 1 SW1 2 SW1 3...

Страница 47: ...bration for location of adjusting holes Status indicators for thermal shutdown OVP operation remote programming and operating mode are also available through the J3 connector The table below lists the...

Страница 48: ......

Страница 49: ...and filtered giving a smooth DC output voltage Feedback from the secondary circuit is applied to a pulse width modulator PWM control circuit which controls the on time of the primary circuit switchin...

Страница 50: ...Theory of Operation Sorensen DCS Series 1kW and 1 2kW Supplies 3 2 M362500 01 Rev K Figure 3 1 Simplified Full Bridge Converter...

Страница 51: ...setting of the current limit control in the current control error amplifier U4 1 The output voltage is also monitored and compared to the voltage control setting in the voltage error amplifier U5 The...

Страница 52: ...e input rectifier configuration P1 also configures the connections to the primary of auxiliary transformer T4 for series or parallel operation PULSE WIDTH MODULATOR Pulse width modulator U6 is a curre...

Страница 53: ...eries at this higher voltage Following is a description of the differences between models that describe the rectifier arrangements for the models at differing voltages Models 8V through 20V On these m...

Страница 54: ...and R420 allow the voltage monitor to provide 0 10Vdc proportional to the full scale output voltage Potentiometer R53 is used to adjust the full scale output of the power supply and potentiometer R52...

Страница 55: ...URCES Op amp U3 1 and transistors Q1 Q2 and Q4 and related components are used to provide three separate 1mA current sources for the front panel voltage and current control pots These current sources...

Страница 56: ...12 130Vdc signal applied between pins 1 positive and 2 negative of connector J3 will also activate U1 and disable the power supply output Diode CR14 rectifies ac inputs while resistors R37 and R38 lim...

Страница 57: ...o 23 are removed pins 10 and 22 are connected to the counterclockwise end of the external 5k ohm potentiometer and the tap and clockwise end are connected to pin 12 The internal 1mA current source at...

Страница 58: ...the voltage control circuit via pin 6 of connector J1 is filtered by resistor R9 and capacitor C14 before it is input to pin 31 of the converter Capacitor C12 and resistor R7 set the conversion frequ...

Страница 59: ...oards 4 3 Troubleshooting Units requiring repair during their warranty period should be returned to AMETEK Programmable Power for service Unauthorized repairs performed by anyone other than AMETEK dur...

Страница 60: ...oting Guide Symptom Check Further Checks and Corrections No output and the display is blank Is power switch on Turn on power Is power applied to AC input Measure voltage on input terminals Is input vo...

Страница 61: ...bration Calibration is performed at the factory during testing Recalibration should be performed annually and following major repairs Calibration should be done with the cover on through the access ho...

Страница 62: ...e and Troubleshooting Sorensen DCS Series 1kW and 1 2kW Supplies 4 4 M362500 01 Rev K Fig ure 4 1 Trimpot Locations Refer to the Safety Notice at the beginning of this manual for an explanation of the...

Страница 63: ...l 5 2 Parts Ordering Do not substitute parts without first checking with Customer Service Department Sorensen parts may be ordered from the factory with the information in the following sections Order...

Страница 64: ...nal Assembly Mother PCB Assembly Front Panel PCB Assembly Output PCB Assembly Rectifier PCB Assembly DCS8 125E 5360800 01 5362100 008 5360801 01 1066830 008 N A DCS10 100E 5360800 12 5362100 010 53608...

Страница 65: ...360800 05 Final Assembly 5360800 06 Final Assembly 5360800 07 Final Assembly 5360800 08 Final Assembly 5360800 09 Final Assembly 5360800 10 Final Assembly 5360800 12 Final Assembly 5360800 13 Final As...

Страница 66: ...5362462 033 5360801 02 1066830 01 5360726 01 DCS40 30E 5362500 040 5362462 040 5360801 02 1066830 01 5360726 02 DCS50 24E 5362500 050 5362462 050 5360801 02 1066830 01 5360726 02 DCS60 20E 5362500 06...

Страница 67: ...500 040 Final Assembly 5362500 050 Final Assembly 5362500 060 Final Assembly 5362500 080 Final Assembly 5362500 100 Final Assembly 5362500 150 Final Assembly 5362500 300 Final Assembly 5362500 600 Fin...

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