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Section 3. Local Operation

Standard Operation

Once you have installed the power supply as covered in Section 2. Installation, the
power supply is ready to operate in local control mode (that is, operation at the front
panel). The power supply has two basic operating modes: Constant Voltage Mode
and Constant Current Mode, and two control modes: Local Control Mode (default
setting) and Remote Programming Mode.

Operating

Modes and

Automatic

Crossover

Whether controlled by local or remote programming, the power supply has two basic
operating modes: Constant Voltage Mode and Constant Current Mode. The mode in
which the power supply operates at any given time depends on the combination of:

•

output voltage setting V

SET

•

output current limit setting I

SET

•

resistance of the attached load R

L

provides a graphical representation of the relationships between these

variables.

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Содержание Sorensen XHR 100-10

Страница 1: ...XROP 01XN Rev C www programmablepower com XHR 1000 Watt Series Programmable DC Power Supply Operation Manual XHR 7 5 130 XHR 20 50 XHR 33 33 XHR 40 25 XHR 60 18 XHR 100 10 XHR 150 7 XHR 300 3 5 XHR 600 1 7 ...

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Страница 3: ... purposes only Notice of Copyright XHR 1000 Watt Series Programmable DC Power Supply Operation Manual 2007 AMETEK Programmable Power Inc All rights reserved Exclusion for Documentation UNLESS SPECIFICALLY AGREED TO IN WRITING AMETEK PROGRAMMABLE POWER INC AMETEK a MAKES NO WARRANTY AS TO THE ACCURACY SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER ...

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Страница 5: ...l and equipment safety Always ensure that facility AC input power is de energized prior to connecting or disconnecting any cable In normal operation the operator does not have access to hazardous voltages within the chassis However depending on the user s application configuration HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals The customer user must ensur...

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Страница 7: ...rary 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 materials not authorized by AMETEK The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement PRODUCT RETURN PROCEDURE...

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Страница 9: ...cations 28 Approvals 28 Mechanical Specifications 29 Dimensions 30 Section 2 Installation Basic Setup Procedure 31 Inspection Cleaning and Packing 32 Initial Inspection 32 Periodic Cleaning 32 Returning Power Supplies to the Manufacturer 33 Return Material Authorization Policy 33 Packaging for Shipping or Storage 34 Location Mounting and Ventilation 35 Rack Mounting 35 Ventilation 35 AC Input Powe...

Страница 10: ...ency Shutdown 64 Unusual or Erratic Operation 64 Troubleshooting for Operators 64 Section 4 Remote Operation Remote Analog Programming of Output Voltage and Current Limit 67 Remote Programming Options 67 Remote Analog Programming Procedure 68 Sample Configuration 70 Remote Monitoring of Output Voltage and Current 71 Readback Signals 71 Using the Isolated Programming ISOL Interface Option 72 ISOL S...

Страница 11: ...with Remote Sensing 47 Figure 2 10 Connecting Remote Sense Lines 50 Figure 3 1 Operating Modes 52 Figure 3 2 Series Operation of Multiple Supplies 55 Figure 3 3 Parallel Operation of Multiple Supplies 56 Figure 3 4 Split Supply Operation of Multiple Supplies 57 Figure 3 5 Split Supply Operation of Multiple Supplies 58 Figure 3 6 Shutdown Programming with Active Low Signal 62 Figure 3 7 Shutdown Pr...

Страница 12: ...List of Figures x Operating Manual for XHR Series Power Supply ...

Страница 13: ...tup Procedure 31 Table 2 2 Power Cords 36 Table 2 3 Current Carrying Capacity for Wiring 39 Table 3 1 Shipped Configuration Local Control Mode 53 Table 3 2 Switch Settings for Shutdown Circuit Logic 61 Table 3 3 Switch Settings for Over Temperature Recovery Options 63 Table 3 4 Quick Diagnostics 65 Table 4 1 Power Supply Settings for Different Programming Sources 69 Table 4 2 Power Supply Settings...

Страница 14: ...List of Tables xii Operating Manual for XHR Series Power Supply ...

Страница 15: ...r rack mounted each supply occupies less than 3 1 2 in 2 U of vertical space Whether you are powering batteries development circuits and magnet coils or running ATE systems the power supply provides the precision and power that you need Features and Options Models available with voltage ranges from 0 7 5 Vdc to 0 600 Vdc current ranges from 0 1 7 A to 0 130 A Internal power factor correction allow...

Страница 16: ... or current and isolated readback of output voltage and current with the optional ISOL interface Optional internal GPIB or RS 232 computer control for complete remote programming and readback capability Front Panel Controls See Figure 1 1 to review the controls LEDs and meters located on the power supply s front panel Check the following sections for additional descriptions of front panel controls...

Страница 17: ...r OVP SET See page 59 Remote Programming LED REM See page 67 Standby Switch STANDBY See page 61 Local Voltage and Current Limit Setting Preview Switch V I CHECK See page 37 Shutdown LED S D See page 61 for more information OVP Shutdown LED OVP Binding Posts Voltage Meter Current Meter Option Board LEDs For units with digital programming interface installed 30 AMP MAXIMUM OL ADR SRQ ERR POL FLT OVP...

Страница 18: ...emote programming and monitoring options See the following sections for more information about remote programming SW1 Programming Switch on page 19 J2 Programming Connector on page 20 Section 4 Remote Operation Rear Panel Illustrations Figure 1 2 Rear Panel with Bus Bar For 7 5 V to 40 V models 100 120 200 240V 50 60 HZ 1300VA AC Input Connector See page 36 SW1 Programming Monitoring and Shutdown ...

Страница 19: ...ose Output voltage and current limit programming scales Output voltage and current monitor scales Remote shutdown circuit logic Resistive programming of output voltage or current limit Over temperature shutdown mode The power supply is shipped with the SW1 switch set in the default operating configuration as illustrated in Figure 1 4 Figure 1 4 SW1 Programming Switch Shown in its default configura...

Страница 20: ...p connector located on the power supply s rear panel The J2 connector provides access to the following functions remote programming of output voltage and or current limit remote monitoring of calibrated readback signals for output voltage and output current remote control of the shutdown function using 2 5 15 V or TTL compatible signals remote sensing of output voltage Switch Function OFF Open 1 1...

Страница 21: ...ted ungrounded programming source when operating the power supply via remote analog control at the J2 connector CAUTION Do not attempt to bias the Program monitor signal return J2 6 relative to the power supply output return as they are connected internally Use the Isolated Programming ISOL option for control from programming sources at potentials differing from the supply output return Wire Clamp...

Страница 22: ...26 in 6 5 mm of insulation insert into the correct terminal and tighten the wire clamp You must ground the shield s to the power supply chassis with a connection less than 1 5 in 40 mm long WARNING There is a potential shock hazard at the output and J2 terminals when using a power supply with a rated output greater than 40 V Use load wiring with a minimum insulation rating equivalent to the maximu...

Страница 23: ...e range of 0 to 40 C with default local sensing The tables on the following pages post maximum values for model dependent specifications Specifications which are different due to measurements being taken at the front panel binding posts are identified where they occur in the tables Specifications are subject to change without notice ...

Страница 24: ... p 0 20 MHz At the front panel binding posts p p 0 20 MHz 10 mV 70 mV 250 mV 10 mV 70 mV 250 mV 7 5 mV 75 mV 350 mV 7 5 mV 75 mV 350 mV Drift 8 hours 3 Voltage 0 05 of Vmax Current 0 1 of Imax 3 75 mV 130 mA 10 mV 50 mA 16 5 mV 33 mA 20 mV 25 mA Temperature Coefficient 4 Voltage 0 02 of Vmax C Current 0 03 of Imax C 1 5 mV 39 mA 4 mV 15 mA 6 6 mV 9 9 mA 8 mV 7 5 mA Maximum Remote Sense Line Drop C...

Страница 25: ...Accuracy Voltage 1 of Vmax 1 count Current 1 of Imax 1 count 0 7 V 0 19 A 1 1 V 0 11 A 1 6 V 0 08 A 4 V 0 05 A 7 V 0 03 A Output Noise and Ripple V rms p p 0 20MHz At the front panel binding posts p p 0 20MHz 10 mV 75 mV 400 mV 10 mV 100 mV 400 mV 20 mV 150 mV 450 mV 30 mV 250 mV 500 mV 120 mV 500 mV 700 mV Drift 8 hours 3 Voltage 0 05 of Vmax Current 0 05 of Imax 3 Maximum drift over 8 hours with...

Страница 26: ...ent of up to 50 of the rated output 1 ms Time delay from power on until output stable 4 s maximum Rated AC Input Voltage 100 120 200 220 230 240 Vac nominal Maximum AC Input Rating 1300 VA Operational AC Input Voltage Range 85 250 Vac power factor corrected Derate maximum output power to 900 W for AC input less than 95 V Maximum Input Current 13 A maximum at 100 Vac 11 A maximum at 120 Vac 6 A max...

Страница 27: ...rop Remote Analog Programming Full Scale Input Voltage and current programming inputs source must be isolated 0 5 k 0 10 k resistances 0 5 V default 0 10 V voltage sources Input impedance Vand I approximately 475 k Remote monitoring Output voltage and current 0 5 V 0 10 V default Output impedance V and I approximately 221 Ω Output short circuit current approximately 50 mA Remote Programming and Mo...

Страница 28: ...UL 61010B 1 Units marked with CE meet EMC Directive standards EN50081 2 and EN50082 1 and Low Voltage Directive safety standard IEC 61010 1990 A 1 1992 A 2 1995 Meets FCC part 15 Class A limits for radio emissions Meets Canadian EMC standard ICES 001 Class A limits Operating Ambient Temperature 0 to 40 C Storage Temperature Range 40 to 85 C Humidity Range Up to 80 RH non condensing Operating Altit...

Страница 29: ...er on front panel Input Fuses 20 A 250 V 5 x 20 mm slow fuses location A5 PCB F321 325 0 005 A 250 V 5 x 20 mm fast fuse location A3 PCB F1 Main Output Connector 7 5 V to 40 V models nickel plated copper bus bars 60 V to 600 V models 4 terminal wire clamp connector for DC output and local sense Analog Programming Monitoring and Sense Connector 2 piece 12 terminal wire clamp connector Chassis Groun...

Страница 30: ...ons Dimensions 30 Operating Manual for XHR Series Power Supply Dimensions Figure 1 6 Dimensional Drawings Dimensions given are nominal 18 78 in 477 mm 15 85 in 403 mm 16 18 in 411 mm 8 45 in 215 mm 3 43 in 87 mm 3 14 in 79 mm ...

Страница 31: ... given Table 2 1 Basic Setup Procedure Step Description Action Reference 1 Inspection Perform an initial physical inspection of the supply Initial Inspection on page 32 2 Installation Install the supply bench or rack mount ensure adequate ventilation Location Mounting and Ventilation on page 35 3 Input Power Connect AC input power AC Input Power on page 36 4 Test Perform functional tests for volta...

Страница 32: ...u suspect internal damage have a service technician check the unit If the unit is damaged save all packing materials and notify the carrier immediately See packing instructions in Packaging for Shipping or Storage Periodic Cleaning No routine servicing of the power supply is required except for periodic cleaning Whenever a unit is removed from operation clean the metal surfaces with naphtha or an ...

Страница 33: ...n page 34 preferably using the original box and packing materials Please ensure that your product is shipped fully insured in the original packaging or equivalent This warranty will not apply where the product is damaged due to improper packaging 2 Include the following The RMA number supplied by Xantrex Technology Inc clearly marked on the outside of the box A return address where the unit can be...

Страница 34: ... power supply in its original container If the original container is not available seal the unit in a plastic bag and then pack it in a 200 lb 90 kg test corrugated cardboard carton large enough to allow 2 inches 5 cm of cushioning material to surround the unit Use a material such as foam slabs or chips 3 Label the carton as shown in Figure 2 1 4 If shipping mark the address of the service center ...

Страница 35: ... 6 32 x in flat head rack mounting screws through the pan into the threaded holes on the bottom of each power supply 5 Install the rack mount pan in the rack Ventilation Always ensure that cooling air reaches the ventilation inlet on the lower front of the unit and that the fan can exhaust from the rear of the unit Additional ventilation space at the top and bottom of the supply will further lower...

Страница 36: ...l voltage as long as it is within the supply s input range as stated in Input Conditions on page 26 Any cord that you use requires a standard IEC 320 termination to mate with the power supply s AC input connector If you need a specific cord call us Table 2 2 Power Cords WARNING There is a potential shock hazard if the power supply chassis and cover are not connected to an electrical ground via the...

Страница 37: ...nse SNS and terminal J2 1 to return sense SNS on the wire clamp connector 3 Turn the voltage and current controls fully counter clockwise 4 Connect the unit to an AC outlet 5 Turn the front panel power switch to ON After a short power on delay the front panel digital meters light up Both voltmeter and ammeter displays read zero Voltage Mode Operation Check 1 Ensure that both the voltage and curren...

Страница 38: ...n the power switch to ON 2 Set the voltage and current controls fully clockwise Push the STANDBY switch to its IN position and check that the voltmeter reading falls to zero and the S D Shutdown LED turns on Push the STANDBY switch once again to reset it to its OUT position The S D LED turns off 3 Press the STANDBY switch to the IN position 4 Press the OVP CHECK switch Check that the voltmeter dis...

Страница 39: ... shows the maximum current rating based on 450 A cm2 for various gauges of wire rated for 105 C operation Operating at the maximum current rating results in an approximate 30 C temperature rise for a wire operating in free air Where load wiring must operate in areas with elevated ambient temperatures or bundled with other wiring use larger gauges or wiring rated for higher temperatures Table 2 3 C...

Страница 40: ...e Sensing on page 48 Figure 2 2 Maximum Load Wire Length for 1 V Line Drop Noise and Impedance Effects To minimize noise pickup and radiation use shielded pair wiring of shortest possible length for load wires Connect the shield to the chassis using the ground screw on the rear panel Where shielding is impossible or impractical simply twisting the wires together will offer some noise immunity When...

Страница 41: ...e A16 EMI filter board are attached to the bus bars on the rear panel Detach only the bus bar shield before making load or remote sense line connections To detach the shield remove the screws as shown in Figure 2 3 WARNING There is a potential shock hazard at the load when using a power supply with a rated output greater than 40 V To protect personnel against accidental contact with hazardous volt...

Страница 42: ...s output voltage and have a current surge rating greater than or equal to the supply s output rating Connect the cathode to the positive output and the anode to the return Where positive load transients such as back EMF from a motor may occur connect a transorb or a varistor across the output to protect the power supply The breakdown voltage rating for the transorb or varistor must be approximatel...

Страница 43: ...ing wire terminal lug to load wiring See Figure 2 4 2 Fasten wire terminal lugs to bus bars with 1 4in x 1 2in M6 x 12 mm screws 1 4in M6 internal tooth lock washers and hex nuts as shown Note Bus bar hole sizes are 2 of 0 257in 6 50 mm diameter D 1 of 0 191in 4 83 mm D and 2 of 0 156in 3 95 mm D Wire Terminal Lug 2 places Screw 2 places Hex Nut 2 places Lock Washer 2 places ...

Страница 44: ...n 0 35in 9 mm at the end of the wires 2 Loosen the terminal screw insert the stripped wire into the terminal and tighten the screw securely Figure 2 5 Output Connector For 60 V to 600 V models WARNING To protect personnel against accidental contact with hazardous voltages ensure that the load including connections has no live parts which are accessible Also ensure that the insulation rating of the...

Страница 45: ...gure 2 7 Single Load with Remote Sensing Connecting Multiple Loads Proper connection of distributed loads is an important aspect of power supply use Two common methods of connection are the parallel power distribution method and the radial power distribution method Parallel Power Distribution This distribution method involves connecting leads from the power supply to one load from that load to the...

Страница 46: ...nals These terminals may be the power supply output terminals the terminals of one of the loads or a distinct set of terminals especially established for distribution use Connect the sense leads to these terminals to compensate for losses and minimize the effect of one load upon another Figure 2 8 and Figure 2 9 show recommended load and sensing connections for multiple loads Local sense lines sho...

Страница 47: ...Installation Load Connection 47 Figure 2 9 Multiple Loads with Remote Sensing ...

Страница 48: ...mote Sensing Note Ground the sense line shield in one place only Locations include the power supply s return output connection at the load the power supply s return output at its negative output terminal or the power supply s chassis WARNING There is a potential shock hazard at the sense connector when using a power supply with a rated output greater than 40 V Select wiring with a minimum insulati...

Страница 49: ... 3 Connect the positive remote sense lead to J2 terminal 2 positive sense and the negative lead to J2 terminal 1 return sense Use shielded pair wiring of 24 AWG or larger for remote sense lines Ensure the mating J2 connector is plugged securely into the connector at the rear panel Connect the other ends of the sense wires to the corresponding sense points at the load 4 To prevent ground loops grou...

Страница 50: ...Installation Local and Remote Sensing 50 Operating Manual for XHR Series Power Supply Figure 2 10Connecting Remote Sense Lines ...

Страница 51: ...modes Local Control Mode default setting and Remote Programming Mode Operating Modes and Automatic Crossover Whether controlled by local or remote programming the power supply has two basic operating modes Constant Voltage Mode and Constant Current Mode The mode in which the power supply operates at any given time depends on the combination of output voltage setting VSET output current limit setti...

Страница 52: ...lue ISET while the load voltage varies with the load requirements Automatic Mode Crossover This feature allows the power supply to automatically switch operating modes in response to changing load requirements If for example the power supply was operating in Constant Voltage Mode IL ISET and the load changed so that the load current IL became equal to the current limit setting ISET the power suppl...

Страница 53: ... Press the STANDBY switch to its OUT position to apply power to the load Note The control circuits have been designed to allow you to set output voltage and current up to 5 over the model rated maximum values The power supply will operate within these extended ranges but we cannot guarantee full performance to specification Local Control Configuration Additional References Use the front panel cont...

Страница 54: ...t the load when using a power supply with a rated or combined output greater than 40 V To protect personnel against accidental contact with hazardous voltages created by series connection ensure that the load including connections has no live parts which are accessible Also ensure that the insulation rating of the load wiring and circuitry is greater than or equal to the maximum output voltage of ...

Страница 55: ...rminal of the next supply See Figure 3 2 The total voltage available is the sum of the maximum voltages of each supply add voltmeter readings to a maximum of 600 V The maximum allowable current for a series string of power supplies is the output current of a single supply in the string Figure 3 2 Series Operation of Multiple Supplies CAUTION Do not use remote sensing during series operation CAUTIO...

Страница 56: ... V 50 A power supplies operating in parallel with a 75 A load one supply operates in constant current mode supplying 50 A and the other supply operates in voltage mode supplying the remaining 25 A The level of current sharing between units depends on how accurately the output voltages are matched Note If you do not fix the OVP setpoints at maximum the OVP circuit may trip on one unit reducing the ...

Страница 57: ... a positive negative supply Two Positive Voltages To obtain two positive voltages connect the negative output terminals of both supplies together in a common connection The positive output terminals will provide the required voltages with respect to the common connection See Figure 3 4 Figure 3 4 Split Supply Operation of Multiple Supplies Local sense lines shown are default J2 connections Two pos...

Страница 58: ... voltage relative to the common connection The negative output terminal of the second supply provides the negative voltage You can set the current limits independently The maximum current available in split supply operation is equal to the rated output of the supplies Figure 3 5 Split Supply Operation of Multiple Supplies Local sense lines shown are default J2 connections CAUTION To prevent possib...

Страница 59: ...line drop then adding this value to the desired OVP setpoint Front Panel OVP Operation In local control mode check the OVP set point at any time by pressing the OVP CHECK switch The OVP set point is the value displayed on the digital voltmeter To set the trip level from the front panel 1 Disconnect any loads Turn the power supply ON 2 Adjust the power supply voltage to any voltage lower than the d...

Страница 60: ...low the OVP set point 2 Press the STANDBY switch IN The S D Shutdown LED on the front panel will turn on The OVP LED turns off 3 Press the STANDBY switch again to return power to the load and resume normal operation OR 1 Reduce the power supply s output voltage setting to below the OVP set point 2 Turn the power supply OFF using the power switch wait until the front panel displays go out then turn...

Страница 61: ...to 15 V signal to disable or enable the power supply s output Make connections for signals at connector J2 located on the unit s rear panel Set rear panel switch SW1 7 to select signal logic See Section 1 for more information about making J2 connector or SW1 switch changes To activate the Shutdown function 1 Turn the power supply OFF 2 Connect the signal source to J2 connector terminal 11 Shutdown...

Страница 62: ...HR Series Power Supply Figure 3 6 Shutdown Programming with Active Low Signal Figure 3 7 Shutdown Programming with Active High Signal Shutdown Signal Source High Output OFF Low Output ON SW1 7 OFF OPEN SW1 7 ON CLOSED Shutdown Signal Source High Output ON Low Output OFF ...

Страница 63: ...er supply recovers from an over temperature shutdown by setting the SW1 8 switch on the rear panel Table 3 3 shows the possible switch settings Table 3 3 Switch Settings for Over Temperature Recovery Options Switch SW1 8 OTP Shutdown Selection Description OFF OPEN Auto Reset Default The supply recovers to normal operation when the over temperature condition no longer exists ON CLOSED Latch OFF Aft...

Страница 64: ...y off immediately 2 Disconnect the power supply from the load 3 Test the power supply with no load running the tests in Functional Tests on page 37 4 If the tests show that the power supply is functioning normally check that load programming and monitoring connections and circuits 5 Check the AC input for correct voltage and frequency If the problem is not solved by following this procedure or if ...

Страница 65: ... on page 51 REM LED turned on If using remote analog control check your analog programming source See Remote Analog Programming of Output Voltage and Current Limit on page 67 If not refer to your digital interface manual Is front panel ACF LED turned on Connect unit to AC supply in specified range Internal circuit See your service technician No output and display blinks dimly Internal circuit See ...

Страница 66: ...propriate AC voltage source Are sense lines connected See Load Connection on page 39 and Local and Remote Sensing on page 48 Is unit under remote control Ensure program source is stable Internal circuit See your service technician Output oscillating Check for unstable or oscillating programming source Stabilize programming source connected to J2 Peak current drawn by load exceeds current limit set...

Страница 67: ... choose a voltage source of 0 5 V or 0 10 V or a current source using a resistance of 0 5 k or 0 10 k You can use the programming scales in any combination to suit your needs Isolated Programming The 4 channel Isolated ISOL Programming Interface is an internal board which can be ordered as an option It allows remote programming and readback of the power supply s output voltage and current limit wi...

Страница 68: ... See SW1 Programming Switch for default settings Switches SW1 5 SW1 6 SW1 7 and SW1 8 are not required for remote programming They can remain at the settings you have selected for your application Resetting switches SW1 3 or SW1 4 the programming scale selection switches may require that you recalibrate the programming circuit to maintain programming accuracy See Calibrating for Programming Accura...

Страница 69: ... set 2 and 3 closed J2 jumper 3 to 4 3 to 5 SW1 set 2 3 and 4 closed J2 jumper 3 to 4 3 to 5 SW1 set 3 closed J2 jumper 3 to 4 0 5 k Resistor SW1 set 1 closed J2 jumper 3 to 4 3 to 5 SW1 set 1 and 4 closed J2 jumper 3 to 4 3 to 5 SW1 set 1 and 2 closed J2 jumper 3 to 4 3 to 5 SW1 set 1 2 and 4 closed J2 jumper 3 to 4 3 to 5 SW1 set 1 closed J2 jumper 3 to 4 0 10 k Resistor SW1 set 1 and 3 closed J...

Страница 70: ...nnecting Programming Sources to J2 Connector Sample Configuration The sample configuration in Figure 4 2 shows the required settings and connections for 0 10 Vdc programming of the output voltage local control front panel control of the output current limit Figure 4 2 Sample Analog Programming Configuration SW1 3 ON CLOSED J2 Jumper 3 to 4 ...

Страница 71: ...iring 20 to 24 AWG and ground the shield to J2 connector terminal 1 or to the chassis See Figure 4 3 and Figure 4 4 for sample configurations using remote monitoring Table 4 2 Power Supply Settings for Remote Monitoring of Readback Signals Note Check the readback accuracy any time you reset the SW1 switch Access offset and range adjustment for the readback signals through the cover of the unit See...

Страница 72: ...lifiers used are rated to 1000 Vdc With ISOL installed the power supply will no longer support resistive programming or 0 10 V programming or readback You can still control any non programmed function either voltage or current limit at the power supply s front panel ISOL Specifications Nominal Gain 1 V V typical Gain vs Temperature 10 ppm C typical Non Linearity 0 016 FSR typical 0 020 FSR maximum...

Страница 73: ...ace installed as you would a power supply with a 0 5 Vdc programming source The only differences are that the programming and monitoring sources are now isolated and that resistive and 0 10 V programming as well as 0 10 V monitoring are unavailable All front panel functions are as usual ISOL Calibration To calibrate a unit which has the ISOL interface installed have the service technician follow t...

Страница 74: ...Remote Operation Using the Isolated Programming ISOL Interface Option 74 Operating Manual for XHR Series Power Supply ...

Страница 75: ...05 accuracy with test leads Current shunt 1 mV amp 0 25 and connecting wire Current rating for the DC shunt and connecting wire must be at least 10 greater than the power supply s output current rating See also Table 2 3 Current Carrying Capacity for Wiring Non conducting straight bladed screwdriver WARNING HIGH ENERGY AND HIGH VOLTAGE Exercise caution when using and servicing a power supply High ...

Страница 76: ...o allow access to the calibration potentiometers on the A1 PCB Refer to Figure 5 1 for the location of the pots 2 Perform the following calibration procedures 3 Once you are finished turn off the power supply and replace the cover Figure 5 1 Front Panel Calibration Locations Voltmeter Calibration 1 Connect the DVM to the output bus bars at a point close to the chassis Turn the current control knob...

Страница 77: ...ammeter reads the maximum rated output current 4 While holding the front panel V I CHECK switch in adjust the current check calibration potentiometer R52 until the front panel ammeter reads the maximum rated output current 5 Turn off the load Over Voltage Protection OVP Calibration 1 Set the output voltage to the maximum rated output voltage 2 Slowly turn the front panel OVP SET screw counter cloc...

Страница 78: ... to recalibrate when you change SW1 switch settings to use 0 10 Vdc programming or when you switch back to 0 5 Vdc programming after previously calibrating for 0 10 Vdc programming Make calibration adjustments using multi turn potentiometers accessed through holes in the cover of the power supply See Figure 5 2 for the location of each of the pots Figure 5 2 Voltage and Current Programming Calibra...

Страница 79: ...ramming Circuit Calibration 1 Ensure that the power supply is turned OFF Disconnect any load 2 Connect the program source between J2 connector terminals 8 output current limit programming input and 6 program monitor signal return 3 Connect the shunt and DVM across the power supply output See note below 4 Turn the power supply ON 5 Apply 1 of program voltage 6 Adjust the current program offset pote...

Страница 80: ...necessary when you change SW1 switch settings to select the 0 10 Vdc scale or when you switch back to the 0 5 Vdc scale after previously calibrating for 0 10 Vdc operation Make calibration adjustments using multi turn potentiometers accessible through holes in the cover of the power supply Refer to Figure 5 3 for the location of each of the pots Figure 5 3 Voltage Current and Monitor Calibration L...

Страница 81: ...he readback scale 50 mVdc for 0 5 Vdc readback or 100 mVdc for 0 10 Vdc readback 7 Set the power supply output voltage to the model rated maximum output 8 Adjust the output voltage monitor range potentiometer R99 until the monitor DVM reads 100 of the readback scale 5 Vdc for 0 5 Vdc readback or 10 Vdc for 0 10 Vdc readback Repeat this adjustment until the monitor signal is within the product spec...

Страница 82: ...dc readback 7 Set the supply output current to the model rated maximum output 8 Adjust the output current monitor range potentiometer R100 until the monitor DVM reads 100 of the readback scale 5 Vdc for 0 5 V readback or 10 Vdc for 0 10 Vdc readback Repeat this adjustment until the monitor scale is within the product specifications as found in Section 1 or to the accuracy that your application req...

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