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PWX750ML User`s Manual - Kikusui Electronics Corp.

1. lt lt The external contact has been used to turn output on so the OUTPUT key is enabled To use the external contact to turn output on again first turn the output off Controlling the output on and off states in this example a high signal is used to turn the output on External contact connection Use pins 18 and 19 of the J1 connector The open circuit voltage across pins 18 and 19 is approximately 5 V The short cir cuit current across pins 18 and 19 is approximately 0 5 mA Use external contacts that have a contact rating of 0 5 mA or more at 5 Vdc If two or more units are floating and you are using a single external contact to turn S 2 core shielded wire or twisted pair wire PWX output on and off for all the units use a relay or similar device for the external contact signal to isolate the signal transmitted to each unit External Control Q 63 64 Controlling the Output On and Off States E For long distance wiring When you are wiring over a great distance use a small relay and extend the coil side of the relay Extend this line Relay PWX ee Controlling Output Shutdown PWX A WARNING This section explains how to use an external contact to turn output off Risk of electric shock The insulation of the external contact S and the connected cable must be greater than or equal to the isolation voltage of the PWX750ML 250
2. 0 13 Turning the POWER switch Off 14 Rack Mounting c sceeceeseeeeeeeeeeeeeeeeeeeeees 14 Load Considerations ccceceeceeeseeeeeeneees 15 Load Cables eceeeceeceeeeeeteeeteeeneeeeeeeneeee 17 Connecting to the Output Terminals 18 SONSING TE E 20 Local sensing ceeeeeeeeeeteeeeteeeeeeeeeteees 21 Remote sensing eseseeseeeeeeeeeeeeeeereseeeee 21 Basic Functions Measured Value Display and Setting Display 24 Panel Operations c ccccceceseeeeeeeeeeeeeeeees 25 Output Operations ccccecceeseseeseseeeesteeeeees 26 Operation Overview ccccceeesceseteeeesteeeeees 26 CV Power Supply and CC Power Supply 27 Using the PWX750ML as a CV or CC Power Sup PIV ee e a a e EEE E E 29 Protection Functions and Alarms 0 008 30 Alarm occurrence and clearing alarms 30 Protection function activation 0 31 CONFIG Settings eceeeeeeeeeeeeeeeeneeeeeeeeees 36 CONFIG parameter details 000 39 Preset Memory Function cccccssceseeseeees 47 Saving settings to preset memory 47 Recalling preset memory entries 48 Locking Panel Operations Key lock 49 Bleeder On Off Feature 0 cccecceeecteeeees 49 Switching from Remote Mode to Local Mode 50 Factory Default Settings Initialization 51 6 T External Control
3. See p 20 Z CAUTION To perform remote sensing connect the PWX750MLs in series and then connect the sensing cables to them as shown in the following figure If the sensing cables are not connected properly the load may be exposed to excessive voltage and the PWX750MLs may be damaged e When the load cables are distributed over longer distance the phase shifting due to wiring inductance and capacitance may go beyond the limit and result in oscillation To prevent such oscillation connect an electrolytic capacitor with several hundreds to several tens of thousands uF across the load Use an electrolytic capacitor with a withstand voltage that is 120 or more of the total of the rated output voltages of the PWX750MLs that are connected in series Unit 1 Output terminal Connect an electrolytic capacitor across the load as necessary Sensing terminal a Connecting the sensing cables during series operation Alarm p 40 PWX All the alarms that are detected on a single unit are also detected during series operation You can use the CONFIG settings to specify what happens when the output is turned off because an alarm is detected You can select to turn the output on automatically when the problem that caused the alarm is fixed CF03 Auto or to leave the output turned off when the problem is fixed CF03 SAFE E Clearing alarms To clear alarms 1 press ALM CLR SHIFT SET 2 set pin 5 of the
4. See the included Safety Precautions document or the electronic version of the document on the CD ROM How do calibrate the PWX750ML Calibration Component Names Front Panel Display area 12 13 14 15 o o ALARM T PRESET LOCK REMOTE LAN 19 20 21 1 CURRENT _ y SET OCP OVP CONFIG PWRDSPL LOCAL ES 4 ALM CLS A B C LOCK 5 6 7 8 9 10 11 PWX No Name Function Flip the switch to the side to turn the power on Flip it to the side to turn the 1 POWER switch p 13 power off r CURRENT knob Used to set the current value or select a parameter number in the CONFIG settings p 25 p 36 FINE Used to make fine current value adjustments p 25 3 VOLTAGE knob Used to set the voltage value or change the value of a CONFIG parameter p 25 p 36 FINE Used to make fine voltage value adjustments p 25 4 Air inlet louver Air inlet for cooling the inside of the PWX750ML a 5 OUTPUT key Used to turn output on and off p 26 6 SET key Used to set and confirm the output voltage and output current the key has an LED p 24 ALM CLR key Used to release protection functions that have been activated the key has an LED p 31 e Used to set and display the overcurrent protection OCP overvoltage protect
5. To reduce the effect of noise use twisted pair wires or 2 core shielded wires When you are using shielded wires connect the shield to the ground of the PWX750ML or the load a Use twisted pair wires for the load cables Make the cables as short as possible Connect an electrolytic capacitor across the load as necessary KS For the sensing cables use twisted pair wires or shielded wires Installation and Preparation 21 22 Sensing Turn the POWER switch off Remove the sensing terminal cover and sensing connector from the rear panel sensing terminals Remove the local sensing jumpers from the sensing connector Remove 7 mm of the wire covering Connect the negative sensing cable to S and the positive sensing cable to S Use cable screws to securely fix the cables in place so that they do not come loose Aa 0O Nea 5 Firmly attach the sensing terminal cover and sensing connector to the rear panel sensing terminals 6 Turn the POWER switch on E Electrolytic capacitor to connect across the load If the wiring inductance component is large the following symptoms may appear The PWX750ML oscillates If the wires used to connect to the load are long the wiring inductance and capacitance can cause phase shifting at a level that can not be ignored This may lead to oscillation The output fluctuates If the load current changes drastically in a pulse shaped pattern the output voltage may
6. When using shielded cables for the connection protect the uncovered sections of the shielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across the external contact and keep the wire as short as possible If the wiring is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use wires that are designed to suppress noise the PWX750ML may not operate properly If you use a shielded cable connect the shield to the negative output terminal To use an external contact to control the output on and off states set the appropriate CONFIG parameter CF09 on Then select the logic setting from the following two options e Turn the output on with a low signal CF10 Lo Output is turned on when a LOW 0 V to 0 5 V or short circuit is applied to pin 1 of the J1 connector Turn the output on with a high signal CF10 Hi Output is turned on when a HIGH 4 5 V to 5 V or open circuit is applied to pin 1 of the J1 connector When you have used an external contact to turn the output off the OUTPUT key on the front panel becomes invalid External H On contact Vv represents that the OUTPUT key has been pressed 1i O Comp on The OUTPUT key is disabled Even if you press it output is not generated lt
7. 1to3000 15 35 10 s 30s 100s 300 s 1000s 3000s CF20 Remote interface parameter Selects the remote interface that you want to use This parameter is applied when you turn the POWER switch off and on Value Parameter description LAn The LAN interface will be used factory default setting uSb The USB interface will be used 232 The RS232C interface will be used CF21 Command language parameter Selects the command language that is used in remote control messages This parameter is applied when you turn the POWER switch off and on Value Parameter description SCPi The SCPI language will be used factory default setting LGCy Legacy languages will be used CF22 Emulation parameter during remote control Selects the emulation that is used during remote control If you have set the command lan guage to legacy languages you can only select Gen or PAG This parameter is applied when you turn the POWER switch off and on Value Parameter description nonE Remote control is performed using the PWX750ML commands made by Kikusui factory default setting 5700 Remote control is performed using the N5700 N8700 commands made by Agilent Technologies GEn Remote control is performed using the Genesys series commands made by TDK Lambda PAG Remote control is performed using the PAG series commands made by Kikusui DCS Remote control is performed using the DCS series commands made by
8. The product can receive a nominal line voltage in the range of 100 Vac to 240 Vac at 50 Hz or 60 Hz Check that the POWER switch is turned off Connect the power cord to the AC inlet on the rear panel A GC N Insert the power plug into a grounded outlet PWX a Turning the Power On Turning the POWER switch on Z CAUTION PWX Risk of electric shock Regardless of whether load cables are connected to the output terminals be sure to attach the OUTPUT terminal cover before turning the POWER switch on You can use the CONFIG settings to set how the PWX750ML starts when you turn the POWER switch on Depending on the setting the output may be turned on automatically when the POWER switch is turned on In case that you connect a load without setting OVP and OCP to the appropriate values the load may be damaged if output automatically turns on at the PWX750ML power on When you turn the POWER switch on for the first time after purchase the PWX750ML starts with its factory default settings Subsequent times that you turn the PWX750ML on it starts with the panel settings excluding the output on off setting that were in use immediately before the POWER switch was turned off You can use the CONFIG settings CF02 to select how the PWX750ML starts when the POWER switch is turned on 1 Check that the power cord is connected correctly 2 Check that the OUTPUT terminal cover is attached When the product is shipped
9. e seeeeceeeeeeeeeees 32 overvoltage protection 2 0 c seeeeeeeeeeeeees 32 power lIMIt Asis die ieee teen ae 35 SIULGOWIN irarria isan praata aerae 35 undervoltage limit eee eee eeteeeeeeeeereeneee 34 R remote interface 2 0 2 eeeeeeeceeeeseeeeeeeeeeeeeeeeeetesteeeeeeees 43 remote SENSING eeeeeceeeecerenseeeeeereeneeerensnenseseeners 20 RS232C interface AUG PALS EN EEE E 46 S SCPI communication error display seer 44 E D REPT AAE TA TAE T EE E E tie saacpogs 35 SENSE sireadair in idly 35 setting limit LEY EE E AE TE E E A E 34 Setting IMIS aaa raaraa a ea aia aE 31 settings reset n eesosenneeeernnrrererenrnrerennnneren eneee 39 107 UVI oisein Bien E EENES 34 V vendor ID display sssssessieessenerrnssirnerinnerrnnerrnsernnenen 46 VOISION torsades ro sap e eA eaae EEEN EA AT eE EEEE 2 VMCB Virtual Multi Channel Bus Channel coiii 44 domMaAIN senin eee 44 voltage monitoring range esssessssesiserireererrerrnsrrnens 41 voltage setting limit oo eee eeeeeeeeneeeteneeeeeeeeeeee 42 e 108 PWX o KIKUSUI ELECTRONICS CORP 1 1 3 Higashiyamata Tsuzuki ku Yokohama 224 0023 Japan Tel 81 45 593 7570 Fax 81 45 593 7571 Website http www kikusui co jp Printed in Japan
10. PART NO IB022997 KIKUSUI 21 Installation and Preparation Basic Functions User s Manual External Control Regulated DC Power Supply PWX Series Parallel Series PWX750ML eee Maintenance Specifications Isolated Analog Interface r OPtions App Troubleshooting Thank you for purchasing the PWX750ML Regulated DC Power Supply About the PWX750ML Manuals These manuals are intended for users of the Regulated DC Power Supply and their instructors It is assumed that the reader has knowledge about electrical aspects of regulated DC power supplies Documentation Structure E Safety information This document contains general safety precautions for this product Keep them in mind and make sure to observe them E User s manual this manual PDF This manual is intended for first time users of this product It provides an overview of the product and notes on usage It also explains how to configure the product operate the product perform maintenance on the product specifications the product and so on To effectively use the product fea tures read this manual from beginning to end We recommend that you read it thoroughly before using this product for the first time If you forget how to use the product or if a problem occurs we recommend that you refer to this manual again Quick reference This manual explains Panel description an
11. PWX750ML Unless specified otherwise the specifications are for the following settings and conditions Loads are pure resistive loads The warm up time is 30 minutes with current flowing After the PWX750ML has been warmed up it must be calibrated correctly in a 23 C 5 C environment according to the procedures given in the operation manual Values indicated by TYP are typical values They are not guaranteed performance values Values indicated by rtg are rated values Values indicated by rdng are readout values The PWX750ML operates over a wide range of output voltage and output current within rated output power However the current that can be output with rated output voltage and the voltage that can be output with rated output current are limited by the rated output power The current that can be output with rated output voltage and the voltage that can be output with rated output current are as follows Maximum output current with rated output voltage Rated output power rated output voltage Maximum output voltage with rated output current Rated output power rated output current Rated load and no load are defined as follows In constant voltage mode when the output current is set to a value greater than or equal to the max imum output current with rated output voltage Rated load Refers to a resistive load that when the rated output voltage is applied makes the flowing current 95 to 100
12. or less resistance Between input and output 500 Vdc 100 MQ or more 70 or less Between output and FG 500 Vdc 40 MQ or more 70 or less Safety Complies with the requirements of the following standard 1EC61010 1 2001 Class I Pollution degree 2 Accessories Power cord 1 pc OUTPUT terminal cover 1 pc Output terminal bolt set M6 bolts 2 sets Bolt nut spring washer and washer for each bolt Chassis connection wire 1 wire J1 connector plug kit 1 set housing x 1 connector x 1 plug x 1 cable strain relief x 1 clip x 2 and two kinds of screws x 2 Packing list 1 copy Quick reference Japanese 1 copy English 1 copy Safety precautions 1 copy CD ROM 1 disc 1 Factory Option 2 Does not apply to specially ordered or modified PWX750MLs 3 This is a Class equipment Be sure to ground this product s protective conductor terminal The safe ty of this product is only guaranteed when the product is properly grounded Specifications gt 93 94 Outline drawing Diameter 16 x 4 M3 screw holes x 4 Rubber foot diameter Max screw insertion depth 8 mm 0 31 inches Bt yz 2 lo i D a C N zi 8 q Ch ot G H S j 70 2 76 L 305 12 01 62 2 44 A MAX 490 19 29 T s amp MAX 29 0 79 437 17 20 LO Tao 92 3 62 mee 2s 214 8 43 PWX750ML outline drawing 21 0 83 l gt 12 0 47 65 8 2 5
13. OVEVIEW 2a rar an aE REE REE Eais 54 About the J1 Connector eccecceceeseeeeeees 54 Output Terminal Insulation cccceeeenees 56 When the output terminal is not grounded flOAtING 0 eeeeeeceeceeeeeeeeeeeeeeeeeeeeaeteeteeeeees 56 When the output terminal is grounded 57 Cautions when using the external voltage VOXt 4 ats Hiab atten 58 Controlling the Output Voltage eee 59 Control using an external voltage Vext 59 Control using an external resistance Rext 60 Controlling the Output Current eee 61 Control using an external voltage Vext 67 Control using an external resistance Rext 62 Controlling the Output On and Off States 63 Controlling Output Shutdown eeeeee 65 Controlling the Clearing of Alarms 04 66 External Monitoring csceecesceeseeseeeeeeees 67 Parallel Series Operation Master Slave Parallel Operation 70 Features of the PWX750ML during master slave parallel operation ceeeeeeees 70 Connection master slave parallel operation 72 Settings master slave parallel operation 74 Starting master slave parallel operation 75 Series Operation c ccecceceeeeceeseeeeeeeeeeees 76 Features of the PWX750ML during series op CAL OM airsean na iaaea 76 Connection series operation 78 Settings series operation eee 79 Starting series operation eeeee
14. This chapter describes how to turn on the PWX750ML what kind of load cables to use and how to connect cables to the out put connectors 12 Connecting the Power Cord PAN ANN Risk of electric shock This product is a piece of equipment that conforms to IEC Safety Class equipment that has a protective conductor terminal Be sure to earth ground the product to prevent electric shock The product is grounded through the power cord ground wire Connect the protec tive conductor terminal to earth ground NOTE e Use the supplied power cord to connect to the AC line If the supplied power cord cannot be used because the rated voltage or the plug shape is incompatible have a qualified engi neer replace it with an appropriate power cord that is 3 m or less in length If obtaining a power cord is difficult contact your Kikusui agent or distributor The power cord with a plug can be used to disconnect the PWX750ML from the AC power line in an emergency Connect the plug to an easily accessible power outlet so that the plug can be removed from the outlet at any time Be sure to provide adequate clearance around the power outlet Do not use the supplied power cord for other devices This product is a piece of equipment that conforms to IEC Overvoltage Category II equip ment that consumes energy supplied from a fixed installation 1 Check that the AC power line meets the nominal input rating of the prod uct
15. become large due to the wiring s inductance component You can reduce the inductance component by twisting the load cables which stabilizes the voltage However if this does not rectify the problem connect an electrolytic capacitor across the load Electrolytic capacitor to use Capacity 0 1 uF to a few hundred uF Withstand voltage At least 120 of the rated output voltage of the PWX750ML E If you are inserting a mechanical switch between the PWX750ML and the load If you want to connect and disconnect the load using a mechanical switch that is inserted between the PWX750ML and the load be sure to include switches in the sensing cables as shown in the following figure and turn on and off the load cable and the sensing cables simul taneously Before you turn the mechanical switch on or off be sure to turn the output or the POWER switch off PWX Basic Functions This chapter describes how to turn the out put on and off and the basic operations that you can perform from the front panel Measured Value Display and Setting Display The voltage and current displays have the following two states e Measured value display e Setting display In addition to the voltmeter and ammeter the PWX750ML can display the power the set OVP or OCP and the system configuration Measured value display The present output voltage and load current are displayed In this situation the SET key LED is off You can change the output vol
16. es A FINE AMcut f AA iM CLOCK Lit E System configuration setting display Press CONFIG to light its LED and display the present system configuration settings DC Pi SUPPLY CURRENT on iS FN PE OUTPUT SET OP o N CONFI AR DSPL LOCAL Pul FINE E C FINE ALMGLR A HAWN a SS Lit Panel Operations Memo When you set a value it is convenient to first use normal resolution to set the value roughly and then switch to fine resolution to set it precisely PWX Measured value display setting display and set OVP OCP display Turn the VOLTAGE knob to change the voltage Turn the CURRENT knob to change the cur rent l ER SUPPL H oa u m f Ta AN fw Bp J Tt nthe ra 4 4 OUTPUT SET OCPOVP CONFIG PyR DSP Loca pala ay FINE CS E a CGS 1 L FINE Decrease Increase 50O S toon Decrease Increase Press SET to switch to the setting display and then change the output voltage and output current while you view their actual settings You cannot set the output voltage to a value that is 95 of the OVP trip point or higher You cannot set the output current to a value that is 95 of the OCP trip point or higher The displayed current or voltage may not change even if you turn the CURRENT or VOLT AGE knob In this situation the values are being changed at a finer resolution that which is being displayed The display will change when the amount that you change the value b
17. has been activated A Lights in green when the memory A values are being recalled or saved 18 PRESET LED B Lights in green when the memory B values are being recalled or saved p 47 C Lights in green when the memory C values are being recalled or saved 19 LOCK LED Lights in green when the keys are locked p 49 20 REMOTE LED Lights in green during remote control Lights and blinks when the LAN interface is in use e No fault status Lights in green 21 LAN LED e Fault status Lights in red e Standby status Lights in orange e WEB identify status Blinks green PWX 10 Rear Panel E ane OUTPUT Ta a UO Rs2320 cee 1100VA MAX Voces INPUT 100 240v 50 60Hz i i XXXXXXXX fesse The serial number is displayed on the side of the product next to the AC inlet No Name Function 1 DC OUTPUT Output connector 2 USB USB port for controlling the PWX750ML remotely A 3 RS232C RS232C port for controlling the PWX750ML remotely MANUAL Interface 4 LAN Ethernet port for controlling the PWX750ML remotely Manual 5 Air outlet Air outlet for cooling the inside of the PWX750ML 6 AC INPUT AC inlet p 12 7 Chassis terminal Connector for grounding the output 8 rials terminal connec Terminals to connect the sensing cables p 20 Ji External control connector p 54 p 69 10 Option slot Slot for the isolated analog interface option factory option p 95 PWX Installation and Preparation
18. if ignored could result in death or serious injury Z CAUTION Indicates a potentially hazardous situation which if ignored may result in damage to the product or other property NOTE Indicates information that you should know DESCRIPTION Explanation of terminology or operation principle Indicates a reference to detailed information Chun Indicates reference to detailed information operation man ual CFxx x CF stands for a CONFIG parameter The two digits after CF indicate the CONFIG parameter number The value after the colon indicates the selected setting SHIFT key name blue characters below the keys Indicates an operation that requires you to press a key indicated in blue characters below the key while holding down the SHIFT key Memo Indicates useful information PWX Contents PWX About the PWX750ML Manuals 2 Checking the Package Contents 2 Product Overview ccceeceesessececeeeeceeeeee 3 Safety Precautions cceecceseseteeeeeeeeeees 4 Precautions Concerning Installation Location 4 Notations Used in This Manual 4 Search Dy TOP C ccesecceeeeeseseeeeeseeeeseaes 7 Component Names cccccsseeeerereeeeeees 8 Installation and Prepara tion Connecting the Power Cord eceseeeeeeenees 12 Turning the Power ON cccceeceeeseeteeeeeeenees 13 Turning the POWER switch on
19. the output ripple noise may not meet the specifications of the PWX750ML To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across Vext and keep the wire as short as possible If the wiring between the PWX750ML and the external contact is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use cables that are designed to suppress noise the PWX750ML may not operate properly 59 60 Controlling the Output Voltage If you use a shielded cable connect the shield to the negative output terminal If the shield needs to be connected to the Vext side see Cautions when using the external voltage Vext Use pins 22 and 23 of the J1 connector Control using an external resistance Rext By using an external resistance Rext to change the reference voltage s voltage divider ratio you can change the output voltage Eo in the range of 0 to the 105 of the rated output volt age Ertg To use an external resistance Rext to control the output voltage set the CV control using an external voltage or an external resistance in the CONFIG settings so that external voltage control is performed CFO6 on The output voltage Eo varies in the range of 0 to the rated output voltage Ertg when the external voltage Vext is changed in the range of 0 V to 5 V CF07 Lo or in the range of 0 V to 10 V CF07 Hi External voltage
20. 10 mV The load current fluctuation is 50 to 100 of the maximum current with the set output voltage 5 Measured using an RC 9131B 1 1 probe that conforms to the JEITA specifications At the rated out put current When the measurement frequency bandwidth is 10 Hz to 20 MHz When the measurement frequency bandwidth is 5 Hz to 1 MHz When the breeder circuit on off setting is on When the ambient temperature is within 0 C and 50 C 0 When the output voltage is 10 to 100 of the rating At the rated output current O OND Specifications 87 88 PWX750ML Display function Voltage Maximum display 99 99 fixed decimal point display Display accuracy 0 2 of rdng 5 digits Current Maximum display 99 99 fixed decimal point display Display accuracy 0 5 of rdng 5 digits Power display The PWR DSPL key lights in red Maximum display 9999 Display accuracy Displays the result of multiplying the current and voltage Operation display OUTPUT ON OFF Output on OUTPUT LED lights in green Output off OUTPUT LED turns off The output is on and a protection function has been activated OUTPUT LED blinks in orange CV operation CV LED lights in green CC operation CC LED lights in red Alarm operation ALM LED lights in red when a protection function has been activated ALM LED blinks in red when the power limit POWER LIMIT has been activa
21. AC FAIL alarms B CF04 Memory content display parameter A CF05 CC control using an Vext or Rext A CFoe CV control using an Vext or Rext A CF07 CV CC control range parameter A CF08 Range during voltage and current monitoring A CF09 External control parameter for turning output on and off ev A CF10 External control logic parameter for turning output on and off Vv A CF11 Bleeder on off parameter A CF12 Output on startup state parameter v A CF13 Detection time of OCP activation A CF14 Current setting limit ev A CF15 Voltage setting limit ev A CF16 Panel display brightness setting A CF17 Communication monitor timer setting A INTERFACE CF20 Remote interface parameter M B CF21 Command language parameter M B CF22 Emulation parameter during remote control M B CF23 SCPI communication error display parameter M A CF24 Multichannel VMCB domain number parameter M B CF25 Multichannel VMCB channel number M B LAN CF30 DHCP parameter y BorC CF31 AUTO IP address parameter v BorC CF32 MANUAL IP address parameter v Borc CF33 Resets the LAN interface settings LCI v A CF34 Restarts the LAN interface REBOOT v A CF35 IP address display 1 v CF36 IP address display 2 v CF37 IP address display 3 v CF38 IP address display 4 v CF39 MAC address display 1 and 2 v CF40 MAC address display 3 and 4 v CF41 MAC address display 5 and 6 M CF42 SCPI RAW protocol TCP port number v Borc USB C
22. EEREN PWX750ML Load with accumulated energy A CAUTION To protect the load and the PWX750ML use a DPP that conforms to the following specifications Reverse voltage withstand capacity At least twice the rated output voltage of the PWX750ML Forward current capacity Three to ten times the rated output current of the PWX750ML A diode with small loss e Be sure to take into account the heat generated by DPP DPP will burn out with inadequate heat dissipation PWX Load Cables PWX A WARNING Risk of fire Use load cables whose capacity is adequate for the PWX750ML s rated output cur rent The output connector and its surrounding area become hot Use cables whose cov ers have heat resistance at 85 C and higher Risk of electric shock Use load cables whose rated voltage meets or exceeds the PWX750ML s isolation voltage E The cables allowable current depends on the insulation s maximum allow able temperature A cable s temperature is determined by the resistive loss based on the current the ambient temperature and the cable s external thermal resistance The following table shows the cur rent capacity of heat resistant vinyl wires that have a maximum allowable temperature of 60 C assuming that a wire is stretched out horizontally in air in an ambient temperature of 30 C The current capacity must be reduced under certain conditions such as when vinyl cables that have a low heat resistance
23. POWER LIMIT Communication monitoring WATCHDOG Alarm occurrence and clearing alarms Alarm occurrence When a protection function has been activated the PMX750ML behaves as follows REGULATED DC POWER iol es LXI CURRENT VOLTAGE E oH P LAN j OUTPU orn K oni FF CONFIG ramos DSPL LOCAL viel Alarm indication when FINE I ra Ea Ca ba FINEN aus noe wo _tock OHP has been activated REGULATED DC ia D VOLTAGE Pi CURRENT B PREBET oh HIF LAN ATi ZNK OVP GOEG Paa Dsp Loca Dl Blinking in Sranoe AER ro em Alarm indication when OHP has been activated with the output on FINES The output turns off For the overheat protection OHP fan failure protection FAN and low AC input protec tion AC FAIL functions you can use the CONFIG settings to select to turn the output on automatically when the problem that caused the alarm is fixed CF03 Auto or to leave the output turned off when the problem that caused the alarm is fixed CF03 SAFE This parameter is the same for the OHP FAN and AC FAIL alarms You cannot set this parameter separately for each protection function The ALARM LED in the front panel display area lights to indicate that an alarm has occurred The voltmeter indicates the cause of the alarm The ALARM LED in the front panel display area blinks only when the power limit has been activated The OUTPUT LED in the front panel display area blinks only
24. PyR DSL jou aia FINE SS A co T herd Lit REGULATED DC POWER SUPPLY LI Slave unit pee anmi i x CIT Example of the panel display LOCK REMOTE LAN OUTPUT Ser OPOP CONG PIMOS LOCAL at j during parallel operation n E ea a L et et Lt be at The output current is 56 A External control This is only available on the master unit PWX Master Slave Parallel Operation Z CAUTION p 67 p 20 p 31 See p 31 p 75 PWX External monitoring During master slave parallel operation do not connect the monitor common cable of the master unit to the monitor common cables of the slave units If the cables connected to the load are disconnected the common cables will be damaged External monitoring of the output voltage V MON This can be monitored from the master unit External monitoring of the output current MON You can monitor the output current of the master unit and each slave unit Use the master unit to monitor the total output current Status monitors You can monitor the status of the following items from the master unit and from each slave unit constant voltage mode CV STATUS constant current mode CC STATUS output on POWER switch on and alarms However slave units always output the status of con stant current mode Remote sensing This is only available on the master unit Alarm If an alarm is detected the units behave as follows Master unit
25. Set the time when the overcurrent protection OCP is activated after an overcurrent is detected Set this in 100 ms steps Value Parameter description 0 0 ms factory default setting 100 to 2000 100 ms to 2000 ms CF14 Current setting limit Set whether to limit the set output current so that its value does not exceed the set overcur rent protection approximately 95 of the OCP trip point When the current setting limit is set to oFF if you set the current setting limit to on when the set OCP is lower than the set current the current value will be maintained and the set OCP will be changed to 105 of the current value The parameter will also be changed if the output is on This is set to on when the panel settings are reset CF00 and when a preset memory entry is recalled You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description OFF The setting is not limited on The setting is limited factory default setting CF15 Voltage setting limit Set whether to limit the set output voltage so that its value does not exceed the set overvolt age protection approximately 95 of the OVP trip point and is not lower than the set under voltage limit When the voltage setting limit is set to oFF if you set the voltage setting limit to on when the set OVP is lower than the set voltage the voltage value will be maintained and th
26. Sorensen Basic Functions N 43 CONFIG Settings CF23 SCPI communication error display parameter Selects whether to display communication errors The errors are only displayed when you are using the SCPI language Value Parameter description oFF SCPI communication errors are not displayed factory default setting on SCPI communication errors are displayed CF24 Multichannel VMCB domain number parameter Set the multichannel domain number PWXs that have the same domain number perform multichannel operations If you do not want to use the multichannel function set this to O this is the factory default setting If 5700 or DCS emulation is selected you cannot use multichannel This parameter is applied when you turn the POWER switch off and on or when you execute CF34 For details on the multichannel function see the Communication Interface Manual on the included CD ROM Value Parameter description 0 The multichannel function is not used factory default setting 1to 255 The domain number when the multichannel function is used CF25 Multichannel VMCB channel number Set the multichannel channel number Specify a unique number on the network If you do not want to use the multichannel function set this to O this is the factory default setting If 5700 or DCS emulation is selected you cannot use multichannel This parameter is applied when you turn the POWER switch off and on or when you ex
27. V CF08 Range during voltage and current Hi 0 V to 10 V monitoring CF10 External control logic parameter for Lo low level signal to turn the output on or turning output on and off Hi high level signal to turn the output on 1 LOW OV to 0 5 V or shorted HIGH 4 5 V to 5 V or open Connect the external current source to the isolated analog interface con nector Check that the current polarity is correct Set the applied current to the appropriate level PWX Appendix ptions e 100 J A Options The PWX750ML has the following options For information about options contact your Kiku sui agent or distributor Rack mount option The PWX750ML can be used with JIS millimeter racks and EIA inch racks Name Model Notes Rack mount adapter KRA1 PWX HALF SINGLE Rack mount bracket and blank panel Rack mount adapter KRA1 PWX HALF PAIR Rack mount bracket and For installing two devices side by side support board Rack mount bracket KRB1 PWX Angled rack mount support angle KRB1 PWX SUPPORT ANGLE Unit mm inches KRA1 PWX HALF SINGLE ain ai p 7 e 7 ed pee KRA1 PWX HALF PAIR KRB1 PWX cl q R A KRB1 PWX SUPPORT ANGLE PWX Options You can use rack mount slide rails CC3001 00 S160 to mount the PWX750ML to a rack Slide rail for rack mounting CC3001 00 S160 Made by General Devices ta Use 10 32 screws with a maximum length of 0
28. and 19 is approximately 0 5 mA 2 core shielded wire or twisted pair wire PWX Use external contacts that have a con S tact rating greater than or equal to 0 5 mA at 5 Vdc If two or more units are floating and you are using a single external contact to clear alarms use a relay or similar device for the external contact signal to isolate the signal transmitted to each unit E For long distance wiring When you are wiring over a great distance use a small relay and extend the coil side of the relay Relay Extend this line PWX ee External Monitoring External monitoring of the output voltage and output current The J1 connector has monitor outputs for the output voltage and the output current Pin no Signal name Description 10 19 23 A COM Remote control input common Output monitor common 25 V MON Monitor output of output voltage 0 to approx 5 V CF08 Lo or 0 to approx 10 V CF08 Hi for 0 to the rated output voltage 24 MON Monitor output of output current 0 to approx 5 V CF08 Lo or 0 to approx 10 V CF08 Hi for 0 to the rated output current CAUTION Shorting V MON and MON to A COM may damage the PWX750ML Monitor output rating Output impedance 1 kQ or less Maximum output current Approximately 10 mA The monitor output signals are used to monitor the DC voltage mean value They cannot be used to accurately monitor the AC components such as ripple and transient re
29. and off You can turn the bleeder circuit off when you don t want A p current to be sinked by the internal bleeder circuit such as when you are charging a battery Even when the output terminal is off open or when the set voltage is 0 V if you turn the bleeder off a voltage as large as a few hundred millivolts may appear at the output terminal Depending on whether the breeder circuit is on or off the sink current and the fall time of out put voltage when an external voltage sources connected will vary When using master slave parallel operation or series operation use the same settings on all connected units Value Parameter description oFF The bleeder circuit is turned off on The bleeder circuit is turned on factory default setting PWX Basic Functions N CONFIG Settings CF12 Output on startup state parameter Sets the operation mode to be prioritized when the output is turned on When used as a slave device CC is automatically prioritized To use the PWX series as a standalone unit or master unit after using it as a slave unit set the operation mode that you want to use If you do not set the operation mode CC will be prioritized You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description CC CC constant current is prioritized CV CV constant voltage is prioritized factory default setting CF13 Detection time of OCP activation
30. are used when the ambient temperature is 30 C or greater or when cables are bundled together and little heat is radiated Nominal cross sectional AWG reference cross Allowable current A _Kikusui recommended area mm sectional area mm Ta 30 C current A 2 14 2 08 27 10 35 12 3 31 37 5 5 10 5 26 49 20 8 8 8 37 61 30 14 6 13 3 88 50 22 4 21 15 115 80 30 2 33 62 139 g 38 1 42 41 162 100 50 1 0 53 49 190 60 2 0 67 43 217 80 3 0 85 01 257 200 100 4 0 107 2 298 125 z 344 150 395 300 200 469 1 Excerpt from Japanese laws related to electrical equipment E Taking measures against noise When connecting wires that have the same heat resistance separating the wires as much as possible to increase heat radiation enables a greater amount of current to flow However wir ing the positive and negative output wires of the load cable side by side or bundling them together is more effective against unwanted noise The Kikusui recommended currents shown in the above table are allowable currents that have been reduced in consideration of the potential bundling of load cables Use these values as a guideline when connecting load cables E Limitations of the remote sensing function All wires have resistance As the wire becomes longer or the current becomes larger the volt age drop in the wire becomes greater This results in a
31. cannot set this parame ter separately for each protection function p 34 When you select Auto if the overheat protection function OHP has been activated output a will turn on again automatically when the internal temperature drops to a normal level How ever if you do not fix the problem that caused the alarm to occur the alarm will occur again which will force you to clear the alarm again The overheat protection devices have long ser vice lives approximately 100000 uses but if they reach the end of their service lives they will stop operating To maintain the performance of the PWX750ML for a long time we request that you fully understand the Auto feature and only use it when necessary Value Parameter description SAFE After the problem that caused an alarm to occur is fixed the output is not turned on automatically factory default setting Auto After the problem that caused an alarm to occur is fixed the output is turned on automatically CF04 Memory content display parameter Sets whether to display the saved contents in the preset memory before recalling them You can use this CONFIG parameter if you forget what settings have been saved to a preset memory entry or if you want to view the saved settings You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description oFF The saved contents of preset memory will be recalled without displaying the
32. communication monitoring before clearing the alarm D DC al ER Fj CURRENT LXI aA _ Alarm indication when the commu ANS KS mr a nication monitoring WATCHDOG mao oe has been activated Wii Basic Functions N 36 CONFIG Settings Use the CONFIG settings to set the PWX750ML system configuration You can set and dis play the following parameters in the CONFIG settings The CONFIG parameters are listed in a separate document included with this manual Effects e indicates a parameter that may be affected when the panel settings are reset CF00 or when a preset memory entry is loaded Vindicates a parameter that may be affected when the master unit the slave unit or the number of units is changed CF01 In the Note column A indicates a parameter that is applied immediately B indicates a parameter that is applied when the PWX series is turned on and C indicates a parameter that is applied when CF34 is executed Parameter number CF CONFIG a two digit number Setting display VOLTAGE CONFIG setting and display examples pee Slat a Setting or display description Effect Note SYSTEM CFoo Resets the panel settings A CF01 Master slave parallel operation parameter v B CF02 Power on status parameter B CF03 Method for clearing OHP FAN and
33. for as long as is necessary 82 PWX Calibration Calibration procedure Use the KIKUSUI PWX calibration application software included on the CD ROM to cali brate the PWX750ML The system requirements for the KIKUSUI PWX calibration is below E OS e Windows7 x86 x64 e Windows Vista x86 x64 Windows XP SP2 x86 NET Framework 2 0 or later m VISA library One of the following VISA libraries is required Do not install multiple VISA libraries on the same PC Doing so may cause errors e NI VISA by National Instruments Corporation Ver 5 0 3 or later e Agilent VISA by Agilent Technologies Agilent IO Libraries Suite 16 0 or later KI VISA Ver 5 0 4 or later For details see the PWX Calibration Manual that is installed together with the application 5 software for calibrating the PWX750ML Be sure to go through all the calibration items If you cancel the calibration item in progress to initiate a different item or if you turn the POWER switch off the calibration will be invalid Connection Maintenance e Voltage calibration PWX DVM Output terminal Chassis terminal e Current calibration PWX Output terminal DVM Chassis terminal PWX 0000o Q 84 This page is intentionally blank PWX Specifications This chapter contains the specifications and gives the dimensions of the PWX750ML 86
34. function is activated when you attempt to set the output voltage to a value that is lower than the set undervoltage limit the UVL trip point In other words it prevents you from setting the output voltage to a value lower than the set limit This function does not turn the output off pi p42 You can use the CONFIG settings to limit the set UVL CF15 E Setting the UVL trip point 1 Press OCP OVP The OCPeOVP key lights and the OVP trip point and OCP trip point are displayed in the display area 2 Press OCP OVP again The present UVL trip point is displayed REGULATED DC POWER SUPPLY 1 TL ea E i gt Display example of the j LOCK REMOTE LAN J OUTPUT SET OGP OVP CONFIG PWRDSPL LOCAL FILE rine et oe ee ces Es NS UVL setting ALMCLR A B G LOCK 3 While viewing the panel display turn the VOLTAGE knob to set the UVL trip point UVL setting range 0 V to 84 V 4 Press OCP OVP to finalize the setting Overheat protection OHP This protection function is activated when the PWX750ML s internal temperature rises to an abnormal level e When the PWX750ML is used in an environment outside its operating ambient tempera ture range 0 C to 50 C 32 F to 122 F e When the PWX750ML is used with its air inlet and exhaust port blocked e When the fan motor has stopped REGULATED DC H isl J E E oH iP LAN ff J j FINE Alarm indication when Lo FINES Ege A a ovr Pya Dsp
35. number 0 the PWX is used as a master unit on the multichannel network CF30 DHCP parameter ON a server is used CF31 AUTO IP address parameter ON the AUTO IP function is used CF32 MANUAL IP address parameter OFF the MANUAL IP address function is not used CF42 SCPI RAW protocol TCP port number 5025 CF60 RS232C baud rate parameter 19 2 kbit s 1 You can only specify this parameter when the PWX series is being used as a master unit 2 0 V to 0 5 V or shorted Basic Functions 51 52 This page is intentionally blank PWX External Control This chapter explains external control and external monitoring using the J1 connector 54 Overview You can use the J1 connector on the rear panel of the PWX750ML to perform the following types of external control Output voltage control Controlled using an external voltage or external resistance Output current control Controlled using an external voltage or external resistance Turning output on and off using an external contact Output shutdown control using an external contact Clearing alarms using an external contact Monitoring operation modes About the J1 Connector Plug kit 749809 9 DB25 is included for connecting to the J1 connector The plug kit is con structed of connector parts made by AMP Simple pressure welding tools and contact removal tools are not included These items must be purchased separately For information about how to use these compon
36. of the maximum output current with rated output voltage No load Refers to a load through which no output current flows In other words refers to an open load no load being connected In constant current mode when the output voltage is set to a value greater than or equal to the max imum output voltage with rated output current Rated load Refers to a resistive load that when the rated output current flows makes the voltage drop to 95 to 100 of the maximum output voltage with rated output current Including the voltage drop in the load cables the PWX750ML output voltage must not exceed the maximum output voltage with rated output current No load Refers to a resistive load that when the rated output current flows makes the voltage drop to 10 of the maximum output voltage with rated output current or 1 V whichever is higher The specifications of the PWX750ML apply to the rear panel output terminals AC input Nominal input rating 100 Vac to 240 Vac 50 Hz to 60 Hz single phase Input voltage range 85 Vac to 265 Vac Input frequency range 47 Hz to 63 Hz Current MAX 100 Vac 10 5A 200 Vac 5 25 A Inrush current MAX 70 Apeak Power MAX 1100 VA Power factor TYP 0 99 input voltage 100 V 0 97 input voltage 200 V Efficiency MIN 74 or more Hold up time for power interruption MIN 20 ms or greater 1 With the rated load Excludes the charge current componen
37. output voltage and output current between the master unit and the slave units is within approximately 5 of the rating When using the PWX750ML independently or when there are units not using parallel opera tion disconnect the parallel operation connections Otherwise the PWX750ML may not operate properly Features of the PWX750ML during master slave parallel operation The features of the PWX750ML during master slave parallel operation are as follows Voltage display and current display The voltmeter on the master unit displays the voltage The last voltage that was set on the master unit is displayed The voltmeters on the slave units display SLAV The master unit s ammeter displays the total of the currents of all the units connected in par allel Each slave unit displays its own current If the maximum output current exceeds 99 99 the maximum current is displayed as 999 9 You can switch the display so that it shows power The master unit s ammeter displays the total of the powers of all the units connected in parallel Each slave unit displays its own power If the number of units during master slave parallel operation that has been specified in the CONFIG settings CF01 does not match the actual number of units connected in parallel the correct current will not be displayed REGULATED DG POWER SUPPLY 1 Master unit m LXI CURRENT VOLTAGE i i a LOCK A OUTP y REMOTE LAN A SeT ZocP ovP Conec
38. terminal Local sensing jumpers LS Connected to the positive output terminal S Positive remote sensing terminal Sensing AWG28 to AWG16 cable PWX Sensing Local sensing By factory default the PWX750ML is set to local sensing the rear panel sensing connector is hard wired The sensing point during local sensing is the output terminal This method does not compensate for the voltage drop in the load cable so use this method when the load cur rent is small or when you do not need to consider the load effect voltage PWX Use twisted pair wires for the load cables stent Make the cables as short as possible Remote sensing PWX Remote sensing is a feature that stabilizes the output voltage across the load by reducing the influence of voltage drops and other effects caused by the load cable resistance You can use the PWX750ML s remote sensing feature to compensate up to 4 V for a single line Select a load cable that has sufficient current capacity to prevent the voltage drop in the load cable from exceeding the compensation voltage When you perform remote sensing set the voltage of the sensing point across the load so that it does not exceed the rated output voltage If you are performing remote sensing with the voltage close to the maximum output voltage the output is limited by the maximum output voltage 105 of the rated output voltage Electrolytic capacitors may be required at the sensing point across the load
39. voltage is maintained at the set voltage Output cur rent is determined by the equation Vs RL and is a current that is less than current limit Is The actual current that flows is not necessarily equal to the specified value For loads in which transient peak current flows current Is must be set so that the peak value does not reach the current limit Conversely if load resistance RL is less than resistance Rc the operating point is in area B and the PWX750ML operates in CC mode point q In this case set voltage Vs equals to the voltage limit When operating in CC mode the output current is maintained at the set current Output volt age V is determined by the equation V Is x RL and is a voltage that is less than voltage limit Vs The actual voltage that is applied is not necessarily equal to the specified value For loads that generate transient surge voltage Vs must be set so that the surge voltage does not reach the voltage limit E Crossover point The PWX750ML switches automatically between CV mode and CC mode according to the changes in the load A crossover point is the point at which the mode switches For example when operating in CV mode if the load changes and the output current reaches the current limit the PWX750ML automatically switches to CC mode to protect the load Like wise when operating in CC mode if the output voltage reaches the voltage limit the PWX750ML switches to CV mode Basi
40. when a protection function has been activated when the output is on If a protection function is activated when the output is on the ALARM LED lights and the OUTPUT LED blinks in orange If the PWX750ML is set so that output turns on automatically after the problem that caused the alarm is fixed CF03 Auto the output is turned on and the OUTPUT LED lights automatically when the problem that caused the alarm is fixed If the PWX750ML is set so that output remains off even after the problem is fixed CF03 SAFE output remains off even after the problem that caused the alarm is fixed e The alarm signal is generated from pin 14 of the J1 connector when the OVP OVP2 OCP OHP FAN SEN AC FAIL SD WATCHDOG has been activated NOTE When a CONFIG parameter is being displayed only the ALARM LED turns on the cause of alarm is not displayed To view the cause of the alarm exit from the CONFIG parameter dis play PWX Protection Functions and Alarms Clearing alarms To clear alarms press ALM CLR SHIFT SET 2 set pin 5 of the J1 connector to LOW 0 V to 0 5 V or shorted or 3 turn the PWX750ML off fix the problem that caused the alarm and then turn the PWX series on If overvoltage protection 2 OVP2 and Shutdown SD has been activated turn the PWX series off fix the problem that caused the alarm and then turn the PWX750ML on When the overheat protection OHP fan failure protection FAN or low AC inp
41. 03 PWX the connector is already assembled so you can use it as is p 54 p 101 If connected for master slave parallel operation STATUS COM pin 1 of the J1 connector of the master unit will be connected to A COM pin 19 of the J1 connector of the slave unit it will no longer be floating If the positive output terminal is connected to the chassis terminal in this condition the status common will be at an electric potential that is lower than that of the chassis terminal by the output voltage Because the positive output terminal is at ground potential secure an insulation capacity greater than or equal to this product s isolation volt age relative to the chassis Example of connecting two slave units 72 re 1 PRLOUT 4 B PRL IN 1 ACOM PRL IN I PRLCOMPOUT 4 PRLCOMPIN sTATUSCOM O ACOM OUTON STATUS t OUT ON OFF CONT 1 1SUM SUM I 1 Connections for parallel operation two Q OQOQOO e PRL IN i PRL IN i PRL COMP IN i ACOM I OUT ON OFF CONT SUM i I 1 Decide which PWX750ML to use as the master unit 2 Connect the J1 connector on the rear panel of the master unit to the J1 connector on the rear panel of the first slave unit If you are using the optional parallel operation signal cable PCO1 PC02 or PCO3 PWX the connector is already assembled so you can use it as is 3 Connect the J1 connector on the rear panel of the fi
42. 38 inches to mount the slide rails CC3001 00 S160 Tightening torque 2 87 Nem to 3 58 Nem Power cord This is the power cord that is used to connect the product to the AC line The following three types are available PD Sew AC2 3P3M IEC320 UL AC1 3P2R5M IEC320 EU AC1 3P2R5M IEC320 CN Rated voltage 125 V Rated voltage 250 V Rated voltage 250 V Rated current 15A Rated current 10 A Rated current 10 A Plug NEMA5 15 Plug CEE7 7 Plug GB1002 Adapter cable RD 8P 9P App This is an adapter cable for connecting the 2 m in length typ product to an RS232C interface I Parallel operation signal cable This cable is used when you perform parallel operations The following three types are avail able PC01 PWX for operating PC02 PWX for operating PC03 PWX for operating two units in parallel three units in parallel four units in parallel PWX 101 R Troubleshooting This section introduces troubleshooting measures Typical symptoms are listed Check whether any of the items listed below apply to your case In some cases the problem can be solved quite easily p 51 agent or distributor The power does not turn on Symptom If none of the items apply to your case we recommend that you initialize the PWX750ML to its factory default settings If the remedy does not correct the problem contact your Kikusui The PWX750ML does not operate when the POWER switch
43. 4 mA t0 20MA 2 VPGM_RTN_IS Return for pin 1 OVto5V 3 IPGM_IS Output current control 2 p or 0 V to 10 V omnes 4 IPGM_RTN_IS Return for pin 3 OVto5V 5 VMON_IS Output voltage monitor 2 p g or 0 V to 10 V 4 mA to 20 mA OVto5V 6 IMON_IS Output current monitor 2 p or 0 V to 10 V FAO 20 mA Turns the output off with a low signal 4 Use pins 7 and 9 of the connector The open circuit voltage 7 SHUTDOWN_IS Output shutdown control across pins 7 and 9 is approximately 5 V The short circuit cur rent is approximately 10 mA Use external contacts that have a contact rating greater than or equal to 10 mA at 5 Vdc Select the logic that is used when an external contact the J1 connector is being used to turn output on and off CF 10 Turns the output on with a low or high signal 4 8 OUTPUT_ON OFF_IS Output on off control Use pins 8 and 9 of the connector The open circuit voltage across pins 8 and 9 is approximately 5 V The short circuit cur rent is approximately 10 mA Use external contacts that have a contact rating greater than or equal to 10 mA at 5 Vdc Common for pins 5 3 9 GND_IS through 8 1 Control within the 0 to 100 range of the rated output voltage 2 Control within the 0 to 100 range of the rated output current 3 Pins 2 4 and 9 are connected internally 4 LOW 0 V to 0 5 V or shorted HIGH 4 5 V to 5 V or open Isolated Analog Interface x 97 98 Setup and Operation Z CAUTION To prevent damage to t
44. 41 decrease even when the fall oFF oFF the voltage that was present when time elapses the output was on will remain Set the breeder circuit on off setting to on 103 PWX Troubleshooting Symptom The output ripple is large Items to Check Remedy The ripple sometimes becomes large Is the input voltage outside the range Apply a voltage that is within the input volt p 86 age range The ripple increased when the PWX750ML was installed in a different location Is something nearby generating a strong magnetic or electrical field Take measures such as moving the PWX750ML away from the field sources or twisting the cables connected to the PWX750ML The output ripple is large dur ing external control Is there a large amount of external voltage noise Take measures against noise The ripple increased when the load cable was changed Are the remote sensing cables con nected When you are not using remote sensing disconnect the remote sensing cables p 20 Symptom The ALARM LED lights when the OUTPUT switch is turned on Items to Check Remedy The ALARM LED lights when the OUTPUT switch is turned Are the remote sensing cables and the sensing connectors connected When you are not using remote sensing p 20 connect the sensing connectors in local on sensing mode Are the polarities of the remote sensing The polarities of the
45. 55 Displays the second IP address number CF37 0 to 255 Displays the third IP address number CF38 0 to 255 Displays the fourth IP address number PWX Basic Functions N CONFIG Settings CF39 to CF41 MAC address display These parameters display the set MAC addresses These parameters are only displayed when you are using the LAN interface The MAC addresses are just displayed they cannot be set from the panel To set a fixed MAC address access the PWX750ML through a Web browser When you access the PWX750ML through a Web browser do so under conditions in which a DHCP server or AUTO IP can be used MAC addresses are set to 00 0F CE xx xx xx where x is a hexadecimal number between 0 and F For information about the Web browser interface see the included CD ROM Parameter Display Description number CF39 00 0F Displays the first and second MAC address numbers CF40 CE xx Displays the third and fourth MAC address numbers CF41 XX XX Displays the fifth and sixth MAX address numbers Display example of the MAC address 00 0F CE 11 22 33 cew PESONA cwe CECEO cF41 22 33 MFH Naay CF42 SCPI RAW protocol TCP port number setting Set the TCP port number of the SCPI RAW protocol for when the LAN interface is in use This parameter is applied when you turn the POWER switch off and on or when you execute CF34 TCP port number 4880 cannot be used When 4880 is specified it is set to the factory default value of 5025 w
46. 9 _ 92 3 62 15 0 59 T le HER g b 21 0 83 10 0 39 EJ M4 screw holes x 4 Max screw insertion depth 6 mm 0 31 inches 10 32 screw holes x 6 3 on each side Max screw insertion depth 8 mm 0 31 inches unit mm inches PWX Isolated Analog Interface Factory option This chapter describes the setup and oper ations of the isolated analog interface Introduction The isolated analog interface is an internal option card that makes it possible to use analog signals to control the PWX Series This option is installed inside the PWX750ML before ship ment You can use a signal that is isolated from the reference potential of the PWX750ML to perform the following the following types of control e Output voltage control e Output current control e Turning output on and off using an external contact e Output shutdown control using an external contact e Output voltage monitoring e Output current monitoring The following two types of isolated analog interface options are available E Voltage control You can control by using an external voltage You can set the output voltage set the output current and perform monitoring by using 0 V to 5 V signals or 0 V to 10 V signals E Current control You can control by using an external current You can set the output voltage set the output current and perform monitoring by using 4 mA to 20 mA signals PWX a Isolated Anal
47. F14 Current setting limit CF15 Voltage setting limit Starting master slave parallel operation Turning power on 1 Turn the master unit s POWER switch on 2 Turn the POWER switch of each slave unit on Parallel Series Operation gt 3 Operate the master unit normally You cannot perform panel operations on the slave units Turn output on and off from the master unit Turning power off After you turn the POWER switch off wait at least 10 seconds after the panel display turns off before you turn the POWER switch back on Repeatedly turning the POWER switch on and off at short intervals can cause damage to the inrush current limiter In turn this will shorten the service life of the POWER switch internal input fuse and other components N CAUTION 1 Turn the slave unit s POWER switch off 2 Turn the master unit s POWER switch off KEXEI a 76 Ge Series Operation You can connect up to two units in series You cannot perform master slave series operation The total of the output voltages of the two units is applied to the load The voltage setting accuracy is the same as the accuracy of an individual unit Features of the PWX750ML during series operation The features of the PWX750ML during series operation are as follows Voltage display and current display The voltage and current are displayed on unit 1 and unit 2 To calculate the total output volt age add the voltages of unit 1 and unit 2 Y
48. F50 VID vendor ID display v CF51 PID product ID display v RS232C CF60 RS232C baud rate parameter M B 1 You can only specify this parameter when the PWX series is being used as a master unit PWX CONFIG Settings Jr Memo Press CONFIG or turn the CURRENT knob to switch between the parameter numbers These two methods switch between the parameter numbers differently PWX Setting and viewing CONFIG parameters CONFIG key CURRENT knob Used to select the parameter number CONFIG key Used to select the parameter number VOLTAGE knob Used to select the value or the parameter to display Measured value display 4 System settings CF00 CF01 D lt knob CHIN 4 Interface settings CF20 CF21 5 CURRENT CF25 lt etn 4 f tert ifi LAN USB RS232C ntertace speciliC cF29 LAn CF20 uSb CF20 232 settings CF30 CF50 CF60 CF31 gt CF51 gt CF42 A y ZX r CURRENT knob gt CF00 CF33 and CF34 are used to execute operations CF35 to CF41 CF50 and CF51 are used to display the status of the PWX750ML You cannot set the values of any of these CON FIG parameters The SET key blinks when you have selected a CONFIG parameter whose setting you must confirm by pressing SET CF00 CF33 or CF34 Specifying the CONFIG settings Excluding resetting the settings reset ting the LAN interface setti
49. IG or PWR DSPL Some CONFIG parameters will be applied immediately after you set them some will be applied after you restart the PWX750ML and some will be applied after you exe cute CF33 or CF34 Specifying the CONFIG settings Resetting the settings resetting the LAN interface settings and restarting the LAN interface Resetting the settings CF00 Resetting the LAN interface settings CF33 Restarting the LAN interface CF34 Press CONFIG once for CF00 or three times for CF33 and CF34 The CONFIG key lights and the SET key blinks If you pressed CONFIG once the ammeter displays the parameter number CFOO LF GG The voltmeter displays the corresponding setting rST SE If you pressed CONFIG three times the ammeter displays the parameter number CF80 6 F 39 The voltmeter displays the corresponding setting on on If you are resetting the LAN interface settings CF33 or restarting the LAN interface CF34 turn the CURRENT knob to select the parameter number Press SET which is blinking The CONFIG key turns off and the SET key the parameter number displayed on the ammeter and the setting displayed on the voltmeter all blink CF33 display example CF33 display example CURRENT Blinking Wz Blinking Van Press SET which is blinking again The settings are applied While the parameter number and the setting are blinking no new settings will be applied until you press SET When sett
50. If an alarm is detected on the master unit output of each slave unit is turned off and then the output of the entire system is turned off Slave unit The slave unit independently enters the alarm state and turns its output off The output does not turn off on the master and other slave units You can use the CONFIG settings to specify what happens when the output is turned off because an alarm is detected You can select to turn the output on automatically when the problem that caused the alarm is fixed CF03 Auto or to leave the output turned off when the problem is fixed CF03 SAFE This parameter only applies to the OHP FAN and AC FAIL errors E Clearing alarms To clear alarms 1 press ALM CLR SHIFT SET 2 set pin 5 of the J1 connector to LOW 0 V to 0 5 V or shorted or 3 turn off the slave units turn off the master unit fix the problem that caused the alarm turn on the slave units and then turn on the master unit Parallel Series Operation gt 71 Master Slave Parallel Operation Connection master slave parallel operation You can connect up to four units including the master unit Connecting the signal cables parallel operation Use the J1 connector to make the connections for parallel operation The cables that are required to make the connection are not included For details see About the J1 Connector If you are using the optional parallel operation signal cable PC01 PC02 or PC
51. J1 connector to LOW 0 V to 0 5 V or shorted or 3 turn off unit 1 and unit 2 fix the problem that caused the alarm and then turn on unit 1 and unit 2 Parallel Series Operation gt Series Operation Connection series operation You can connect up to two units Connecting the load series operation Connect the load as shown below 7 WARNING Risk of electric shock Turn the POWER switch off before you touch the OUTPUT ter minals Attach the OUTPUT terminal cover after you finish wiring the load When the load cables are distributed over longer distance the phase shifting due to wiring inductance and capacitance may go beyond the limit and result in oscillation To prevent such oscillation connect an electrolytic capacitor with several hundreds to several tens of thousands uF across the load Use an electrolytic capacitor with a withstand voltage that is 120 or more of the total of the rated output voltages of the PWX750MLs that are connected in series Z CAUTION Output termina Chassis termina Unit 1 Load or relay terminal block Output termina Load connection in series operation In this example the negative terminal of unit 2 is connected to the chassis terminal Chassis termina Unit 2 1 Turn off all the PWX750MLs that you want to connect in series Remove the OUTPUT terminal covers Use load cables to connect unit 1 and unit 2 to the load or relay terminal block Use load cabl
52. ML is malfunctioning If OVP2 is activated turn the POWER switch off and on REGULATED DC POWER SUPPLY J mm LXI CURRENT fad VOLTAGE B c eG a S E Alarm when OVP2 has P CONFIG PWRDSPL LOCAL j pre te Ed been activated The overcurrent protection function OCP is activated under the following conditions e When the output current exceeds the set current OCP trip point e When the load or the PWX750ML is malfunctioning Set the OVP and OCP trip points to appropriate values Immediately after you purchase the PWX750ML or immediately after a load is changed you have to set the OVP and OCP trip points to values that are appropriate for the load The OVP2 trip point is fixed to 120 of the rated output voltage E Setting the OVP and OCP trip points and the detection time of OCP activation The PWX750ML OVP operates according to the output terminal voltage If you want to acti vate the protection function according to the voltage across the load take the voltage drop in the load cable into consideration when you set the OVP trip point See 0 31 p 42 You can use the CONFIG settings to limit the set OVP CF15 and the set OCP CF14 p 42 You can use the CONFIG settings to set the detection time of the OCP activation CF13 ocr trip point OVP trip point VOLTAGE A Ji OVP and OCP trip point Pees Fe ea f displays puruz ZS S soos CONFIG PWR DSPL LOCAL 1 Press OCP OVP The OCPeOVP key lights and
53. Turn the bleeder circuit off when you do not want the internal bleeder circuit to sink output current When you connect a battery you can pre vent excessive electrical discharges by turning the bleeder circuit off When using master slave parallel operation or series operation use the same settings on all connected units Depending on whether the breeder circuit is on or off the sink current and the fall time of out put voltage when an external voltage sources connected will vary The sink current or fall time indicated here is a standard value Risk of electric shock Set the bleeder on off setting to on before you touch the out put terminals Even if you turn the output off or turn the POWER switch off if the bleeder on off setting is set to oFF the voltage that was present when the output was on will remain at the output terminals E Sink current from an external voltage source when the breeder is on and off When the voltage from the external voltage source is larger than the set voltage Vout Output terminal voltage Bleeder Sink current circuit 5 Vout 10 Vout 20 Vout 30 Vout 40 Vout 50 Vout 60 Vout 70 Vout 80 Vout ON 704 mA 667 mA 593 mA 519 mA 444 mA 370 mA 296 mA 222 mA 148 mA OFF 0 1 mA 0 2 mA 0 4 mA 0 6 mA 0 8 mA 1 0 mA 1 2 mA 1 4 mA 1 6 mA 1 Even when the breeder is on the sink current decreases gradually at o
54. Vext 0 V to 5 V CF07 Lo External voltage Vext 0 V to 10 V CF07 Hi Eo Ertg x Vext 5 in V Eo Ertg x Vext 10 in V Vext 5 x Eo Ertg in V Vext 10 x Eo Ertg in V External resistance Rext connection For the external resistance Rext use a resistor that is rated at approximately Wiper 10 kQ 1 2 W or greater that has a low temperature coefficient and that will change little over time Examples of such resistors are metal film or wire wound resistors 2 core shielded wire or twisted pair wire PWX To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across Rext and keep the wire as short as possible If the wiring between the PWX750ML and the external contact is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use cables that are designed to suppress noise the PWX750ML may not operate properly If you use a shielded cable connect the shield to the negative output terminal Use pins 20 22 and 23 of the J1 connector PWX Controlling the Output Current PAN ANN This section explains how to control the output current using an external voltage Vext or an external variable resistor of approximately 10 kQ Rext Risk of electric shock The insulation of Vext or Rext and the connected cable must be greater than or equal than or equal to the isolation voltage of the PWX750ML 250 Vmax When using shield
55. Vmax When using shielded cables for the connection protect the uncovered sections of the shielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across the external contact and keep the wire as short as possible If the wiring is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use wires that are designed to suppress noise the PWX750ML may not operate properly If you use a Shielded cable connect the shield to the negative output terminal If you apply a LOW 0 V to 0 5 V or short circuit to pin 6 of the J1 connector the output turns off To recover set pin 6 of the J1 connector to HIGH 4 5 V to 5 V or open the pin and then turn the POWER switch off and then on Output shutdown connection Use pins 6 and 19 of the J1 connector core shielded wire or The open circuit voltage across pins 6 twisted pair wire PWX and 19 is approximately 5 V The short se circuit current across pins 6 and 19 is TE A approximately 0 5 mA r Use external contacts that have a con SO tact rating greater than or equal to 0 5 mA at 5 Vdc Li i If two or more units are floating and you are using a single external contact to turn output off for all the units use a relay or similar device for the external contact signal to isolate the si
56. al is connected to the chassis terminal the positive output termi nal is at ground potential The cable and load that are connected to the output terminal including the sensing terminal will only require an insulation capacity that is greater than or equal to the maximum output voltage of the PWX750ML with respect to the chassis There is no need to provide insulation that is greater than or equal to the isolation voltage of the PWX750ML The same holds true when the negative terminal is connected to the chassis terminal The cable and load require an insulation capacity that is greater than or equal to the maximum output voltage of the PWX750ML For safety reasons connect one of the output terminals to the chassis terminal unless your application requires the output terminals to be floating PWX Isolated Because the positive output terminal is at ground potential the section shown on a gray background must have an insulation capacity greater than or equal to the maximum output voltage relative to the chassis Isolated Approximately the same potential as the negative output terminal Approximately the same potential as the negative output terminal Chassis terminal External Control Q 57 58 Output Terminal Insulation Cautions when using the external voltage Vext Connect the cables so that output is not shorted See the following figures for examples of shorted output CAUTION The signal cab
57. appear blinking 2 Check the displayed settings and then press SET The SET LED and the LED that corresponds to the loaded preset memory entry both light and the set voltage and current are displayed on the panel Easily recalling a preset memory entry 1 Use the CONFIG settings to set the PWX series to hide the saved con tents of preset memory entries CF04 oFF 2 While holding down the SHIFT key press the appropriate memory key A B or C The LED that corresponds to the preset memory entry that you have loaded PRESET A B or C lights If no load is connected it will take time for the output voltage to decrease PWX Locking Panel Operations Key lock The PWX750ML s key lock function prevents you from accidentally changing the settings CURRENT FINE When the keys are locked when the LOCK LED is lit only the OUTPUT key is valid REGULATED DC POWER SUPPLY Cone a PRESET m gi ENE K la puru SET OGP OVP CONFIG Pinner ie Te co iz i ALMCLR A i tet mi a Rii XI VOLTAGE 1 Configure all the settings such as the output voltage and output cur rent as necessary 2 Hold down LOCK SHIFT LOCAL until the LOCK LED in the display area lights When the LOCK LED lights the keys are locked To unlock the keys hold down LOCK again SHIFT LOCAL until the LOCK LED turns off Bleeder On Off Feature PWX Z WARNING You can turn the bleeder circuit on and off
58. aster unit Value Parameter description Lo 0 V to 5 V factory default setting Hi OVto10V CF08 Range during voltage and current monitoring p 67 Selects the range during voltage and current monitoring Value Parameter description Lo 0 V to 5 V factory default setting Hi OVto10V CF09 External control parameter for turning output on and off p 63 Selects whether an external contact the J1 connector will be used to turn output on and off E E This is set to oFF when the panel settings are reset CF00 and when a preset memory entry is recalled You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description oFF External control is not performed factory default setting on External control is performed CF10 External control logic parameter for turning output on and off 63 Sets the logic that is used when an external contact the J1 connector is being used to turn P output on and off If you are not using an external contact to turn output on and off select Hi You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description Lo Output is turned on when a LOW signal 0 V to 0 5 V or short circuit is received factory default setting Hi Output is turned on when a HIGH signal 4 5 V to 5 V or open circuit is received CF11 Bleeder on or off 49 Turns the bleeder circuit on
59. at caused the protection function to be activated is fixed Set voltage current limitation feature You can apply limits to the voltage and current settings This prevents you from setting an appropriate value by mis take which would cause the output to turn off Overcurrent protection OCP detection time setting You can set a detection time which is the amount of time that an overcurrent must persist after the first detection of the overcurrent before the overcurrent protection OCP is activated By setting the detection time you can prevent an alarm from occurring when an inrush current from the EUT connected to the output causes an excessive current to flow temporarily Bleeder on off feature You can turn the bleeder circuit on and off Turn the bleeder circuit off when you do not want the internal bleeder circuit to sink output current When you connect a battery you can prevent excessive electrical discharges by turning the bleeder circuit off Compatibility with other products You can set the command language and emulation that are used during remote control By setting the command lan guage you can enable the PWX to support the proprietary commands of other products By selecting the emulation you can remotely control products other than the PWX Isolated analog interface factory option You can use isolated optical signals to set and monitor the output voltage and current The signal is isolated from the reference poten
60. c Functions N 27 28 CV Power Supply and CC Power Supply CV mode and CC mode operation example This section uses a power supply with a rated output voltage of 100 V and a rated output cur rent of 10 A as an example A load resistance RL of 8 Q is connected to the output terminals of the power supply The output voltage and output current are set to 30 V and 5 A respectively In this case Rc 30 V 5 A 6 Q Because 8 Q is greater than 6 Q RL gt Rc the power supply operates in CV mode When you want to increase the voltage in CV mode you can increase the voltage up to the voltage defined by the following equation Vs Is x RL Substituting the values we obtain Vs 5A x 8 Q 40 V If you try to increase the voltage above this point the crossover point is reached and the power supply automatically switches to CC mode To maintain oper ations in CV mode increase the current limit Next a load resistance RL of 5 is connected to the output terminals of the power supply The output voltage and output current are set to 30 V and 5 A respectively In this case Rc 30 V 5 A 6 Q Because 5 Q is less than 6 Q RL lt Rc the power supply operates in CC mode When you want to increase the current in CC mode you can increase the current up to the current defined by the following equation Is Vs RL Substituting the values we obtain Is 30V 5Q 6 A If you try to increase the current above this point the crossover p
61. d operation briefly m Communication Interface Manual HTML partially PDF This manual contains details about using commands to con trol the product remotely It also contains details about the multichannel function Virtual Multi Channel Bus which makes it possible to control up to 31 PWXs from a single PC The interface manual is written for readers with sufficient basic knowledge of how to control power supplies using a PC The command list is provided in PDF format PDF and HTML files are included in the accompanying CD ROM Adobe Reader 6 0 or later is required to view the PDF files Microsoft Internet Explorer 6 0 or later is required to view the HTML files If you find any misplaced or missing pages in the manuals they will be replaced If the manual gets lost or soiled a new copy can be provided for a fee To replace or purchase a man ual please contact your Kikusui agent or distributor At that time inform your agent or distributor of the Part No written on the front cover of this manual Every effort has been made to ensure the accuracy of this manual However if you have any questions or find any errors or omissions please contact your Kikusui agent or distributor After you have finished reading this manual store it so that you can use it for reference at any time Firmware versions that this manual cov ers This manual covers firmware versions 2 2X When contacting us about the product please pro
62. d to as constant voltage CV mode The constant current source operation is referred to as constant current CC mode The operation mode is determined by the follow ing three values The set output voltage Vs The set output current Is e The load resistance RL The operation modes are described below RL gt Re RL Re Vmax A Vs pf Crossover point ood CV mode area ICC mode area gt RL lt Re Vs Set voltage i Is Set current i Rc Vs Is Ohm s Law BE RL Load resistance Vmax Maximum settable voltage 0 Is Imax Imax Maximum settable current Output current lout Output voltage Vout The above figure shows the PWX750ML operation modes The load resistance is denoted as RL The resistance which is denoted as Rc is calculated from the set voltage and current Rc Vs Is The power supply is designed so that it operates in CV mode in area A and CC mode in area B The boundary is the line defined by RL Rc This line represents the load at which the output voltage and the set voltage are equal and the output current and the set cur rent are equal If load resistance RL is greater than resistance Rc the operating point is in area A and the PWX750ML operates in CV mode point p In this case the set current Is equals to the current limit When operating in CV mode the output
63. e set OVP will be changed to 105 of the voltage value In addition the set UVL will be changed to match the voltage value The parameter will also be changed if the output is on This is set to on when the panel settings are reset CF00 and when a preset memory entry is recalled You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description OFF The setting is not limited The setting is limited factory default setting PWX CONFIG Settings Memo When multiple units are used side by side if the brightness of the panel display is different between units you can adjust it p 35 PWX CF16 Panel display brightness setting Adjusts the panel display brightness The larger the number the brighter the display Even if you specify the same number the brightness may be different between individual products The brightness is not proportional to the setting Value Parameter description 1to7 Screen brightness factory default setting 7 CF17 Communication monitor timer setting Sets the interval for monitoring SCPI command communication The communication monitoring function operates regardless of whether the product is in remote or local panel control mode When using local mode panel control be sure to specify oFF Value Parameter description OFF Communication monitor timer is set to off factory default setting
64. eces if you remove the PWX750ML from the rack If you remove the PWX750ML from the rack re attach the original rubber feet When using several PWX750ML power supplies together such as for master slave parallel operation or series operation mount them to a rack before use You can mount the PWX750ML to the Kikusui KRC series and KRO series racks Rubber foot Screw 4 locations M3 screw Max depth 8 mm 0 31 inches Removing the rubber feet Loosen the screws to remove the rubber feet in four locations PWX Load Considerations PWX Note that the output will become unstable if the following types of loads are connected Loads with peak current or pulse shaped current The PWX750ML only indicates mean values Even when the indicated value is less than or equal to the set constant current the peak values may exceed the set constant current If this happens the PWX750ML is instantaneously put into constant current mode and the output voltage drops For these types of loads you must increase the set constant current or increase the current capacity Set constant current Set constant current tie Ammeter reading mean value Ammeter reading mean value Load current with peaks Pulse shaped load current Loads that generate reverse current to the power supply The PWX750ML series cannot absorb reverse current from the load Therefore if a regener ative load such as an inverter converter or
65. ecute CF34 For details on the multichannel function see the Communication Interface Manual on the included CD ROM Value Parameter description 0 The PWX is used as a master unit on the multichannel network factory default setting 1 to 30 The PWX is used as a slave unit with this channel number on the multichannel network CF30 DHCP parameter Selects whether or not to obtain an IP address from a DHCP server If you are using a fixed IP address set this to oFF This parameter is applied when you restart the PWX750ML or when you execute CF34 Value Parameter description oFF A DHGP server is not used on A DHCP server is used factory default setting PWX CONFIG Settings CF31 AUTO IP address parameter Set whether to automatically attain an IP address when you are not using or can not use a DHCP server The address that is assigned by the AUTO IP function is 169 254 x x where x is a number between 0 and 254 If you are using a fixed IP address set this to oFF This parameter is applied when you restart the PWX750ML or when you execute CF34 Value Parameter description OFF The AUTO IP function will not be used on The AUTO IP function will be used factory default setting CF32 MANUAL IP address parameter Set whether to manually specify an IP address when you are not using or can not use a DHCP server If you are using a fixed IP address set this to oFF This parameter
66. ed cables for the connection protect the uncovered sections of the shielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage Control using an external voltage Vext PWX Z CAUTION To use an external voltage Vext to control the output current set the CC control using an external voltage or an external resistance in the CONFIG settings so that external voltage control is enabled CF05 on The output current lo varies in the range of 0 to the rated output current Irtg when the external voltage Vext is changed in the range of 0 V to 5 V CF07 Lo or in the range of 0 V to 10 V CFO7 Hi External voltage Vext 0 V to 5 V CF07 Lo External voltage Vext 0 V to 10 V CF07 Hi lo Irtg x Vext 5 in A Vext 5 x lo Irtg in A lo Irtg x Vext 10 in A Vext 10 x lo Irtg in A The signal cable may burn out Do not connect the Vext output that is leave it floating Risk of damage to the product e Pay careful attention to the polarity of Vext Do not apply a voltage of 10 5 V or greater or a reverse voltage across the external voltage control pins When using the optional isolated analog interface do not connect anything to pin 21 IPGM of the J1 connector External voltage source Vext connection Connect a low noise stable voltage source to Vext The noise in Vext is multiplied by the amplification fact
67. ee 79 Maintenance Callibration ccccssccecseeeeesneeeesseeeeeeeeeesseeeees 82 Calibration OVervieW ccesceeeesteeeeees 82 Calibration proCcedure ccscceesseeeees 83 Specifications Isolated Analog Inter face Introduction ececceeeeeeeeeneeeeeeeeeeseeeeeenneeeeneeees 96 Isolated Analog Interface Connector 97 Setup and Operation ceeeeeeeeeseeeeeeeees 98 Appendix A Options ou B Troubleshooting PWX Search by Topic Preparation Operation Maintenance Troubleshooting See Troubleshooting on page 102 PWX e want to check the accessories See Checking the Package Contents or the included packing list The installation space is limited so want See the included Safety Precautions to check the installation conditions document or the electronic version of the document on the CD ROM How do connect the AC power supply gt Connecting the Power Cord What kind of load cables should use Load Cables How do ensure stable voltage when the Sensing cables connected to the load are long the distance to the load is long How do rack mount the PWX750ML Rack Mounting What kind of parts are needed How do use remote sensing to stabilize gt Sensing the PWX750ML How do set the protection functions to Protection Functions and Alarms prevent da
68. eeteneeeeteneeenenee 49 L LAN interface TESEMING ca cccceccch eee ce dabehs cat eiceeneedealceetcdieedseeuslowe 45 PESANT sccis2icecehebatageiiseeehigebisl cid ee cabeaeets 45 PWX M MAC address display ccceeseeseeeseeeneteteeeeeeeeaes 46 memory contents display 0 eee eeeeeeeeeeeereeeeeneee 40 memory FUNCTION 0 eee e cence eeneeetereeeeeeneeeteneeerenees 47 multichannel VMCB cseceeeeeeseeeteeeseeeeteeseeeeeeees 3 CHANG DEA E EE E 44 OOMAIM aano e na 44 0 OGP eir oe eter a E se 32 OCP activation detection time 0 0 eee eeeeeeteeees 42 OP si eeu seein ae 34 output on and off external control eee eee eeeeeeeeeeeeeeeneeeees 41 external control logic oo tees eeeeeeeeteeetenes 41 output on startup State oo eee eee e ee eeeeeeeeeeeeee 42 ONY aE EE ETA E 32 OVP2 arachnids Grey 32 P parallel operation oo eee eee eeeeeeeeeteeeteseeeeeeaeeeneee 39 POWER LIMIT hi cceiceetesceteedittieitnge ere ti aresinaiiees 35 power on StatUS oo eee eee eeeree reer eeeeeaaeeeeeeenaenees 39 product ID display 00 0 eee eee eeeseeeeeneeesereeeteeeeneee 46 protection function alarm clearance Method eeeeeeeneeeeees 40 fan failure protection 1 eeeeeeeeseeeeeneeeeee 34 incorrect sensing connection protection 35 low AC input protection oe eee eeeeeeeeeee 35 overcurrent protection eeeeeeeeeeeeeeeeees 32 overheat protection 0 eee eeseeeseeeeeeeeeeeeee 34 overvoltage protection
69. ents see the AMP catalogs For information about how to obtain these tools or replacement parts contact your Kikusui agent or distributor Attaching the USB cable core To connect to the J1 connector requires a core on the cable for connection The core is not included Use an appropriate core Recommended core ZCAT3035 1330 EMI FILTER 250 Ohm 100 MHz by TDK 1 2 Unlock the snap on core and open to split Wrap the cable twice around either half of the open core Unlock and open the core Wrap the wire so that the distance between the core lt and the J1 connector is within 30 mm aye Close the core keeping the USB cable from being wedged in between Check that the core is securely locked zo Core To J1 connector rO m To connection iF PWX About the J1 Connector J1 connector pin arrangement AW Connector type 5747461 3 AMP Plug type 745211 7 AMP 191210109 87654324 Q 25 24 23 22 21 20 19 18 47 16 15 14 O Wie clemer AWG26 to AWG22 Manual pressure welding AMP handle assembly 58074 1 Pin number positions when you are tool AMP head assembly 58063 2 facing the rear panel Insertion extraction tool AMP 91232 1 or equivalent Pin an AG Signal name Description 1 STATUS COM Status signal common for pins 2 3 and 14 to 16 2 CV STATUS O
70. es so Continue sliding the cover until that the protruding parts of you hear a lick the top cover are in front of 7 the protruding parts of the po Push the OUTPUT terminal cover against the rear panel and then use screws to fix the cover in place Make sure that both screws are securely fastened Bottom cover After you have lined up the top and bottom covers use the screws to fix them in place Screws M3 PWX Installation and Preparation 20 Sensing When the PWX750ML is shipped from the factory terminal cover and connector are attached to the sensing terminals For safety reasons when not using the sensing terminals be sure to attach to terminal cover If they are damaged or lost contact your Kikusui agent or distributor Terminal cover Connector r P1 000 109 84 61 7305 Connecting the sensing cables N WARNING Risk of electric shock and damage to internal circuits Never wire the sensing terminals while the POWER switch is turned on Use sensing cables whose rated voltage is higher than the PWX750ML s isolation voltage Protect the uncovered sections of the shielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage The sensing terminals are at approximately the same electric potential as the nega tive output terminal Insert the cables so that the wire strands do not touch the chas sis when they st
71. es that have sufficient current capacity Wire the load cables so that they are as short as possible If the voltage drop in the load cable is large the difference in electric potential between power supply units and the load effect become large Go N Connect the cables to the output terminals of unit 1 and unit 2 Connect the output terminal positive or negative of unit 1 or unit 2 to the chassis terminal ai gt 6 Attach the OUTPUT terminal cover 78 PWX Series Operation Settings series operation Setting the voltage and current Set the voltage and current on each unit The voltage that is output is the total of the voltages of the two units Set the current to the same value on the two units Setting the overvoltage protection OVP and overcurrent protec tion OCP In series operation you have to set the overvoltage protection OVP and overcurrent protec tion OCP on both units Specify the same values on the two units Starting series operation Turning the power on and off Turn the POWER switch on unit 1 and unit 2 on or off CAUTION After you turn the POWER switch off wait at least 10 seconds after the fan stops before you turn the POWER switch back on Repeatedly turning the POWER switch on and off at short intervals can cause damage to the inrush current limiter In turn this will shorten the service life of the POWER switch internal input fuse and other components Turning the out
72. eter description CF01 Master slave parallel operation parameter 1 independent operation CF02 Power on status parameter SAFE panel settings that were in use the last time the power was turned off CF03 Method for clearing OHP FAN and AC FAIL alarms SAFE do not clear the alarm automatically CF04 Memory content display parameter ON displayed CF05 CC control using an Vext or Rext OFF CFo6 CV control using an Vext or Rext OFF CF07 CV CC control range parameter LO 0 V to 5 V CF08 Range during voltage and current monitoring LO 0 V to 5 V CF09 External control parameter for turning output on and off OFF CF10 External control logic parameter for turning outputon LO a LOW signal turns output on 2 and off CF11 Bleeder on off parameter ON bleeder circuit is on CF12 Output on startup state parameter CV CV is prioritized CF13 Detection time of OCP activation 0 ms CF14 Current setting limit ON the setting is limited CF15 Voltage setting limit ON the setting is limited CF16 Panel display brightness setting 7 CF17 Communication monitor timer setting OFF Communication monitoring timer off CF20 Remote interface parameter LAN CF21 Command language parameter SCPI CF22 Emulation parameter during remote control NONE PWX series commands CF23 SCPI communication error display parameter OFF not displayed CF24 Multichannel VMCB domain number 0 the multichannel function is not used CF25 Multichannel VMCB channel
73. from the factory the OUTPUT terminal cover is not attached Turn the POWER switch on l All the LEDs light and then the voltmeter and the ammeter display the following sequence of information the rated voltage and rated current the firmware version number the build number and then the selected interface Each item is displayed for approximately 1 second After a few seconds the PWX750ML enters the operation standby state the output value is displayed REGULATED DC POWER SUPPLY cc CURRENT 2227 2 ALARM PRESI F OUTPUT SET OCP OVP CONFIG PWRDSPL LOCAL ilg me l ALMGLR A z aS g UEI OUTPUT SET OCP OVP CONFIG PWRDSPL LOCAL PISIA FINE a a G G a FINE ALMCLR A z clock Rated voltage and rated current display The PWX750ML is being used in this example T LOCK Firmware version display Version 1 00 in this example Build number display Build number BLD 0120 in this example ULATED Di as EE OUTPUT SET OCP OVP CONFIG PWRDSPL LOCAL me a Oa a a ALMCLR A CURRENT FR m OUTPUT SET OCP OVP CONG PWROSPL LOCAL FINE m a ce ca CS G Ca ALMCLR Tl ECK T Lock Interface display The LAN interface is selected in this example VOLTAGE E Inrush current When the POWER switch is turned on an inrush current of up to 70 A flows Check that suffi cient current capacity is available in the AC power line or the switchboard particularly if you are using multiple PWX750ML and
74. g nal transmitted to each unit E For long distance wiring When you are wiring over a great distance use a small relay and extend the coil side of the relay Extend this line Relay External Control Q 65 66 a Controlling the Clearing of Alarms A WARNING This section explains how to use an external contact to clear alarms Risk of electric shock The insulation of the external contact S and the connected cable must be greater than or equal to the isolation voltage of the PWX750ML 250 Vmax When using shielded cables for the connection protect the uncovered sections of the shielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across the external contact and keep the wire as short as possible If the wiring is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use wires that are designed to suppress noise the PWX750ML may not operate properly If you use a shielded cable connect the shield to the negative output terminal If you apply a LOW 0 V to 0 5 V or short circuit to pin 5 of the J1 connector the alarms will be cleared Alarm clear connection Use pins 5 and 19 of the J1 connector The open circuit voltage across pins 5 and 19 is approximately 5 V The short circuit current across pins 5
75. gle unit x the number of units in par allel is set If you switch to the setting display when the SET key is lit this value is dis played The last voltage that was set on the master unit is used When you press OUTPUT the set voltage and current are output You can set the voltage and current to any values Setting the overvoltage protection OVP and overcurrent protec tion OCP of the master unit When you are performing master slave parallel operation set the overvoltage protection OVP and overcurrent protection OCP of the master unit When you set the number of units in master slave parallel operation CF01 the maximum overcurrent protection value 112 of the rated output current of a single unit x the number of units in parallel is set If you switch to the OVP OCP setting display when the OCP OVP key is lit this value is displayed The last overvoltage protection value that was set on the master unit is used PWX Master Slave Parallel Operation PWX CONFIG parameters that can be set on master units e CFOO Resets the panel settings e CF02 Power on status parameter CF04 Memory content display parameter e CF05 CC control using an Vext or Rext e CF06 CV control using an Vext or Rext CFO7 CV CC control range parameter e CF09 External control parameter for turning output on and off e CF10 External control logic parameter for turning output on and off CF12 Output on startup state parameter C
76. h the USB 2 0 specifications Baud rate 12 Mbps full speed Socket B type Program message LF or EOM during reception LF EOM during transmission terminator Device class Complies with the USBTMC USB488 device class specifica tions LAN Hardware IEEE 802 3 100Base TX or 10Base T Ethernet Complies with LXI Specification version 1 3 Class C IPv4 RJ 45 connector Communication protocol VXI 11 HiSLIP or SCPI RAW Program message terminator VXI 11 and HISLIP LF or END during reception LF END dur ing transmission SCPI RAW LF during reception LF during transmission 1 This setting does not guarantee compatibility with all measuring instrument application software and drivers 2 The RD 8P 9P adapter cable is an option 3 Category 5 use a straight cable Specifications gt 91 92 PWX750ML Isolated Analog Interface Factory option Isolated external control input Voltage control Isolated output voltage control VPGM_IS 0 to 100 of the rated output voltage Selectable control voltage range 0 V to 5 V or 0 V to 10 V Isolated output current control IPGM_IS 0 to 100 of the rated output current Selectable control voltage range 0 V to 5 V or 0 V to 10 V applied voltage Isolated output Accuracy 5 of rtg control common Temperature 100 ppm C coefficient Input impedance 1 MQ Maximum absolute 0 V to 15 V Isolated output on off contr
77. he product do not set the output voltage and output current to values that exceed the product s ratings Using the voltage control interface See 36 1 3 Use the CONFIG settings to set the following parameters CONFIG parameter Setting CFOS CC control using an external voltage or or external resistance CV control using an external voltage CF06 or external resistance on CF09 External control parameter for turning n output on and off CF07 CC or CV control range Range during voltage and current monitoring Lo 0 V to 5 V or Hi 0 V to 10 V CF08 Lo 0 V to 5 V or HI 0 V to 10 V External control logic parameter for Lo low level signal to turn the output on or CF10 turning output on and off Hi high level signal to turn the output on 1 LOW OV to 0 5 V or shorted HIGH 4 5 V to 5 V or open Connect the external voltage source to the isolated analog interface connector Check that the voltage polarity is correct Set the applied voltage to the appropriate level Using the current control interface See 36 1 Use the CONFIG settings to set the following parameters CONFIG parameter Setting CFOS CC control using an external voltage n or external resistance CV control using an external voltage CF06 on or external resistance CF09 External control parameter for turning aii output on and off CF07 CC or CV control range Hi 0 V to 10
78. hen the settings are applied Value Parameter description 1000 to 9999 except 4880 TCP port number factory default setting 5025 CF50 Vendor ID VID display Displays the USB vendor ID Display Description Ob3E 0x0B3E CF51 Product ID display Displays the USB product ID Display Description 1025 0x1025 CF60 RS232C baud rate setting Sets the RS232C baud rate This parameter is applied when you restart the PWX750ML Value Parameter description 1 2 1200 bps 2 4 2400 bps 4 8 4800 bps 9 6 9600 bps 19 2 19200 bps factory default setting PWX ee Preset Memory Function The PWX750ML has the preset memory that stores three sets of the following settings the voltage the current the OVP the OCP and the UVL You can recall the stored set from the preset memory whenever you need To select the preset memory that you specify for saving or recalling a set of settings press A B or C key while holding down SHIFT key The recalling will be effective at the moment when you select the preset memory To save the present settings you need to keep holding down the keys SHIFT A B or Saving settings to preset memory p 34 PWX 1 Press SET The SET key lights and the present voltage and current settings are displayed on the panel 2 While viewing the values displayed on the panel turn the VOLTAGE knob to set the preset memory voltage and turn the CURRENT knob to
79. ick out of the sensing terminal Also insert the cables so that the stripped wires do not stick out of the terminal Even if you turn the output off or turn the POWER switch off if the bleeder on off set ting CF11 is set to oFF the voltage that was present when the output was on will remain at the output terminals Set the bleeder on off setting to on before you touch the sensing terminals Regardless of whether local sensing or remote sensing is used be sure to attach the sensing terminal cover before turning the POWER switch on If the sensing cables come loose the output voltage across the load may become unstable and an excessive voltage may be applied to the load If an appropriate OVP trip point is set the OVP will trip before an excessive voltage is generated When you are finished with remote sensing return the PWX750ML to local sensing mode Strip gauge Correct 7 mm 0 28 inches aoe Be i aes a Li Soa The wire itself is Wire scraps are ASENSING in contact with in contact with the chassis the chassis EET LS S Terminal Function isa this screw to fixthe S Negative remote sensing terminal cables in place so that they do Negative local sensing terminal not come loose LS Connected to the negative output terminal Strip 7 mm 0 28 inches of the cable covering and then insert Not connected the cable here Positive local sensing
80. ielded cable by using insulation tubes whose withstand voltage is greater than the PWX750ML s isolation voltage AN WARNING External Control Q To use an external voltage Vext to control the output voltage set the CV control using an external voltage or an external resistance in the CONFIG settings so that external voltage con trol is enabled CF06 on The output voltage Eo varies in the range of 0 to the rated output voltage Ertg when the external voltage Vext is changed in the range of 0 V to 5 V CF07 Lo or in the range of 0 V to 10 V CF07 Hi External voltage Vext 0 V to 5 V CF07 Lo External voltage Vext 0 V to 10 V CF07 Hi Eo Ertg x Vext 5 in V Eo Ertg x Vext 10 in V Vext 5 x Eo Ertg in V Vext 10 x Eo Ertg in V CAUTION The signal cable may burn out Do not connect the Vext output that is leave it floating Risk of damage to the product e Pay careful attention to the polarity of Vext Do not apply a voltage of 10 5 V or greater or a reverse voltage across the external voltage control pins When using the optional isolated analog interface do not connect anything to pin 22 VPGM of the J1 connector External voltage Vext connection Use a low noise stable voltage source 7 i sige core shielded wire or for Vext The noise in Vext is multiplied twisted pair wire PWX by the amplification factor of the PWX750ML and appears in the out put Therefore
81. ights Even when the output is on you can set the voltage and current by carrying out step 5 and step 6 while checking the actual output voltage or current You can set the voltage that is actually output while checking the power You can use the CONFIG settings to set the output on startup state CF12 prioritize CC or CV Set this according to the operation mode that you are using You can prevent overshoot from occurring when the output is turned on by prioritizing CV when using the PWX series as a constant voltage power supply and by prioritizing CC when using the PWX series as a con stant current power supply When used as a slave device CC is automatically prioritized To use the PWX series as a standalone unit or master unit after using it as a slave unit set the operation mode that you want to use If you do not set the operation mode CC will be prioritized When the output is turned on the internal capacitors are charged Depending on the set cur rent the PMX750ML may enter CC mode for an instant Basic Functions 29 30 Protection Functions and Alarms The PMX750ML is equipped with the following protection functions Overvoltage protection OVP Overvoltage protection 2 OVP2 e Overcurrent protection OCP e Undervoltage limit UVL e Overheat protection OHP Fan failure protection FAN e Incorrect sensing connection protection SENSE e Low AC input protection AC FAIL Shutdown SD e Power limit
82. ing CFOO the measured value display appears When you are setting CF33 or CF34 the display changes once after you press SET The ammeter displays boot In both cases all key LEDs light After these are dis played for approximately 4 to 5 seconds the measured value display appears and the settings are applied Display example of CF33 or CF34 being applied PWX CONFIG Settings CONFIG parameter details 0 36 H91 Communication Interface Manual See p 13 PWX The CONFIG parameters are explained in detail below CF00 Resets the panel settings Sets whether the panel settings will be reset The following settings will be reset When the settings are reset the PWX750ML settings take on the same values as they do when an RST command is received You can only specify this parameter when the PWX series is being used as a master unit Output voltage Output on off at power on Output currente Constant current control using an Vext or Rext CF05 e Overvoltage protections Constant voltage control using an Vext or Rext CF06 e Overcurrent protections External control setting for turning output on and off CF09 e Undervoltage limite Voltage and current setting limits CF15 and CF14 Value Parameter description rSt Resets the panel settings CF01 Master slave parallel operation parameter Sets the total number of units master unit and slave units in master slave parallel operation Specif
83. ion 7 OCP OVP keys OVP undervoltage limit UVL trip points the key has an LED pee A Used to recall and save the value of preset memory A the key has an LED p 47 8 CONFIG key Used to configure the various operating conditions the key has an LED p 36 B Used to recall and save the value of preset memory B the key has an LED p 47 9 PWR DSPL key Used to display the output power on the ammeter the key has an LED p 24 Cc Used to recall and save the value of preset memory C the key has an LED p 47 LOCAL key Used to switch between local mode and remote mode the key has an LED p 50 10 i LOCK key Used to lock the operation of all keys other than the OUTPUT key the key has an p 49 LED 11 SHIFT key Used to enable the functions that are written in blue characters below the key 12 Ammeter Displays the current power or the parameter number of a CONFIG parameter p 24 p 36 13 CC LED Lights in red during constant current mode p 29 14 Voltmeter Displays the voltage the value of a CONFIG parameter or the cause of an alarm Eog 15 CV LED Lights in green during constant voltage mode p 29 16 OUTPUT LED Lights in green when output is turned on Blinks orange when output is on and a pro p 26 p 30 tection function has been activated Lights in red when a protection function has been activated However does not light 17 ALARM LED when a undervoltage limit UVL protection has been activated Blinks red when the p 30 power limit POWER LIMIT
84. is applied when you restart the PWX750ML or when you execute CF34 Value Parameter description OFF The MANUAL IP function will not be used factory default setting on The MANUAL IP function will be used CF33 Resetting the LAN interface settings LCI Sets whether the LAN interface settings will be reset to their factory default settings You can use this if you forget the security password or IP address This parameter is only displayed when you are using the LAN interface Value Parameter description LCi The LAN interface settings will be reset to their factory default settings CF34 Restarts the LAN interface REBOOT Restarts the LAN interface The LAN interface settings that you have specified do not change Value Parameter description boot The LAN interface settings are saved and the interface is restarted CF35 to CF38 IP address display These parameters display the set IP addresses These parameters are only displayed when you are using the LAN interface The IP addresses are just displayed they cannot be set from the panel To set a fixed IP address access the PWX750ML through a Web browser When you access the PWX750ML through a Web browser do so under conditions in which a DHCP server or AUTO IP can be used For information about the Web browser interface see the included CD ROM Parameter Display Description number CF35 0 to 255 Displays the first IP address number CF36 0 to 2
85. is turned on Items to Check Remedy Is the power cord broken Exchange the power cord with a new one p 2 Is the power cord connected correctly Connect the power cord correctly p 12 No output is generated Symptom Items to Check Remedy See No output is generated even Is the output voltage set to 0 V and the Turn the knobs to set the output voltage p 25 when the OUTPUT switchis output current set to 0 A and output current to the required values turned on Are you using an external con Yes Use the external contact to turn output on p 63 tact to turn output on and off No Set the external control parameter for turn p 41 ing output on and off to off CF09 oFF Even when the PWX750ML is Has the overvoltage protection OVP Limit the set output voltage CF15 on If p 42 configured so that output is function been activated you do not limit the set output voltage turned on at power on the CF15 oFF set the OVP to a value that is output is turned off immedi higher than the set voltage ately after the power is turned Has the overvoltage protection A voltage that is greater than or equalto p 86 on OVP2 function been activated the rated output may be being applied to the PWX750ML Check the voltage that is being applied Has the overheat protection OHP func The internal temperature is abnormally p 34 tion been activated high Check the operating conditions After you have removed the cause of
86. itENTOSiitEN Ioga RS232C USB or LAN interface mode The PWX750ML does not Was a local lockout llo command sent Send the SYST LOC communication switch to local mode even through the communication interface command to clear the local lockout llo when the LOCAL switch is status pressed PWX Troubleshooting Unable to perform remote control Symptom Items to Check Remedy See Remote control through the Have you selected the communication Select the remote control communication p 43 communication interface can interface that you want to use in the CON interface CF20 not be performed FIG settings When the LAN interface is in Is the LAN LED lit in orange or red If it is lit in orange the PWX series is wait p 44 use the IP address cannot be ing for a response from the DHCP server obtained from the DHCP If it turns red afterward the PWX series server may have timed out Consult your network administrator Unable to control functions properly Symptom Items to Check Remedy The breeder on off function Are you using master slave parallel opera When using master slave parallel opera p 41 does not work tion or series operation tion or series operation set the breeder on off settings CF11 of all connected units to the same value 105 PWX 106 This page is intentionally blank PWX Index A ACCESSONOS Yaraa eaaa E ae AER 2 AG PAIL E E T 35 alarm Clearing iirin uA dee
87. joa G KG OHP has been activated If you do not fix the problem that caused the OHP to be activated OHP will be activated again even if you restart the PWX750ML Fan failure protection FAN This function is activated when the number of fan rotations drops to an abnormal level REGULATED DC POWER SUPPLY J VOLTAGE an Kee L a PAE A PE E EENEN Alarm indication when fan failure K com Pya nsp pai SHIFT cS l protection has been activated 34 PWX Protection Functions and Alarms See p 26 p 30 PWX Incorrect sensing connection protection SENSE This function is activated when the remote sensing cables are connected with the incorrect polarity positive or negative and the remote sensing function is then used REGULATED DC POWER SUPPLY P LRSEH5A Th yra Alarm indication when incorrect LOCK REMOTE LAN icra OVP CONG PWR DSPL LOCAL sensing connection protection has been activated FINE Em R il em uf h ws T LOCK l eN Low AC input protection AC FAIL This function is activated when a low AC input is detected cv 1 CURRENT VOLTAGE ga J ci Alarm indication when low AC e SEa f input protection AC FAIL has EAN K oneg aera eel FINN A i FINE Le co oa been activated ji Shutdown SD Shutdown SD is not activated as a result of the PWX750ML detecting an error It is a func tion that is used to turn the output off through the applica
88. l be 31 GISDIAY PEE E al abel E ET 31 alarm OCCUrrence ccceceeeeneeeeeeseeeeeeeesseeteeeeneseeaes 30 al rm signal sirean olanin 31 B bleeder on off 0 eeeeeeeeeeeeesneeeceeeeenaeeeeeeeesneneeeeeees 41 Cc CC CONIO wcsicieeis cetioeecieinitsaisen evlaviet ed ie 40 CC MOUS spressi tages seth aser iN aaa ES 27 command language sessseesssserisssireerrrrerirnerrnsrrnnerenne 43 constant current Mode ss esssssssessrnnesrrrnnnnerrrrnnnenrennn 27 constant current power SUPDIY ssesseseseessreerreesrreerne 27 constant voltage mode sessssessssssessrreerrererrnsrinnerenne 27 current monitoring range sssssessrieerirerrrnsrrserenne 41 Current setting limit oo eee ener eeeeneetereeeeeeeeeeee 42 COV COMMU neesiana aeaea aaneen iiaia 40 CV MOJE f2iicni nial eee dele 27 CV CC control range oe eee eeeeeeeteeceteeteeeesteeeneeeeaees 41 D DHCP sirectedite aia eee avid ete ee ite 44 E emulation during remote control eecceeeeeeees 43 F factory default settings ee eee eeeeeeetereeeeeneeeees 51 FAN atenent ra t ei octet chee aa the oceans eens tnae 34 firmware version ooo ee eee eeeseeeceeseeeeeeeeeeeeesteeeeeetensneeteeees 2 l iMitali Zaton re 51 IP address display 0 eeeeeeeseeeeeeeeeeeneeereeeeeeeeeeeee 45 IP address auto ee eeeecccccceeceeeeeeeseeceeceeeeeceeaeeeeseees 45 IP address manual cccccccccecccccessseeeeeeeeeeeeeeeeees 45 K key lock function oo eeeeeteneeeeeereeetere
89. le may burn out Do not ground the Vext output that is leave it floating e If you are connecting the shield to the Vext side do not connect the shield to the output ter minal of the PWX750ML Vext 2 core shielded wire PWX ahanacannnnnz Approximately the same electric potential as 2 the negative output terminal Output is shorted by the grounding of Vext causing current to flow A connection in which the output is shorted by the grounding of Vext example of a prohib ited connection Vext 2 core shielded wire PWX O Approximately the same electric potential as the negative output terminal Ground the positive output terminal Output is shorted by the shield causing current to flow A connection in which the output is shorted by the shield example of a prohibited connec tion PWX D Controlling the Output Voltage Control using an external voltage Vext PWX This section explains how to control the output voltage using an external voltage Vext or an external variable resistor Rext of approximately 10 KQ If no load is connected it takes some time for the output voltage to decrease Risk of electric shock The insulation of Vext or Rext and the connected cable must be greater than or equal to the isolation voltage of the PWX750ML 250 Vmax When using shielded cables for the connection protect the uncovered sections of the sh
90. m on The saved contents of preset memory entries will be displayed factory default set ting CF05 CC control using an Vext or Rext See p 39 p 48 Selects whether constant current will be controlled by an external voltage Vext or an exter si ic ER nal resistance Rext the J1 connector p 59 This is set to oFF when the panel settings are reset CF00 and when a preset memory entry is recalled You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description oFF Control will not be performed factory default setting on Control will be performed CF06 CV control using an Vext or Rext p 59 Selects whether constant voltage will be controlled by an external voltage Vext or an exter E nal resistance Rext the J1 connector This is set to oFF when the panel settings are reset CF00 and when a preset memory entry is recalled You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description oFF Control will not be performed factory default setting on Control will be performed PWX CONFIG Settings CF07 CV CC control range parameter See 59 p 61 Selects the range that is used when controlling constant current and constant voltage with an an ent external voltage or an external resistance the J1 connector You can only specify this parameter when the PWX750ML is being used as a m
91. mage to the load After a protection function has been acti Alarm occurrence and clearing alarms vated how do restart tests automatically when the cause of the alarm is fixed How do set the communication condi See the Communication Interface Man tions for remote control ual on the CD ROM How do check the settings in preset Recalling preset memory entries memory How do reset the PWX750ML to its fac Factory Default Settings Initialization tory default settings How do use the multichannel VMCB See the Communication Interface Man function to construct a multichannel power ual on the CD ROM supply system How do I use the PWX750ML as a con Using the PWX750ML as a CV or CC stant voltage power supply CV mode Power Supply How do use the PWX750ML as a con stant current power supply CC mode How do operate the PWX750ML ata Preset Memory Function specific current How do save current values to the preset memory How do control the output voltage with Overview an external DC voltage How do monitor the output voltage and External Monitoring output current How do use parallel operation to Master Slave Parallel Operation increase the current capacity How do prevent the settings from being gt Locking Panel Operations Key lock changed How do clean the PWX750ML
92. n at power on be sure to check the OVP parii trip point setting before you turn the PWX750ML off If you change the load it may be damaged if the PWX750ML s OVP and OCP settings are CAUTION A not correct Operation Overview The PWX750ML is a constant voltage CV constant current CC regulated DC power supply that can output a wide range of voltage and current within rated output power If you configure the settings so that output voltage x output current is less than or equal to the rated output power the PWX750ML operates as a traditional constant voltage CV con stant current CC power supply If you configure the settings so that output voltage x output current is greater than the rated output power the actual output is limited by the power limit POWER LIMIT approximately 105 of the rated output power and the output voltage and output current change depend ing on the load value 90 Rated output voltage BO Vv 80 70 60 Rated output power 750 W 50 Output voltage V 40 30 20 Rated output current 28 A 10 0 0 5 10 15 20 25 28 30 PWX750ML operating range Output current A PWX CV Power Supply and CC Power Supply PWX The PWX750ML has features that enable it to function as a constant voltage source and con stant current source even when the load is changed The constant voltage source operation is referre
93. n when the PWX750ML is in CV mode open collector output from a photocoupler 3 CC STATUS On when the PWX750ML is in CC mode open collector output from a photocoupler 2 4 N C Not connected 5 ALM CLR Alarm clear terminal Alarms are cleared when a LOW 0 V to 0 5 V or short circuit is applied to this terminal i TERTE c 6 SHUT DOWN Output shutdown control terminal The output is turned off when a LOW 0 V to 0 5 V or short circuit is ro applied to this terminal O 7 PRL IN Negative input terminal for master slave parallel operation z 8 PRL IN Positive input terminal for master slave parallel operation D 9 PRL COMP IN Correction signal input terminal for master slave parallel operation x 10 ACOM External signal common for pins 5 to 9 11 to 13 20 to 22 24 and 25 During remote sensing this is the negative electrode S of sensing input When remote sensing is not being performed this is connected to the negative output 11 PRL OUT Positive electrode output terminal for master slave parallel operation 12 PRL COMP OUT Correction signal output terminal for master slave parallel operation 13 SUM Current signal terminal for master slave parallel operation 14 ALM STATUS On when a protection function OVP OVP2 OCP OHP FAN SEN or AC_FAIL has been activated or when an output shutdown signal is being applied output through an open collector photocoupler 15 PWRONSTATUS Outputs a low level signal when power is turned on output
94. ngs and restarting the LAN interface 1 Press CONFIG The CONFIG key lights and the SET key blinks The ammeter displays the parameter number CFOO FOGG The voltmeter rST 5E displays the corresponding setting Press CONFIG or turn the CURRENT knob to select the number of the parameter that you want to set When you press CONFIG the PWX series switches between the parameter numbers in the following order CF00 CF20 gt CF30 CF50 gt CF60 gt measured value display When you turn the CURRENT knob the PWX750ML switches between the parameter numbers The parameter numbers that are displayed are those within the ranges defined by the parameter numbers that pressing the CONFIG key switches between Basic Functions N 38 CONFIG Settings p 36 Memo Press any key other than SET to cancel the confirmation of the parameter 4 r Memo CF33 and CF34 will continue to be displayed while the settings are being applied this takes approximately 4 to 5 seconds When the measured value display appears the new settings have been applied co Turn the VOLTAGE knob to change the value of the parameter To specify or display other parameters repeat step 2 and step 3 To stop specifying CONFIG settings proceed to step 5 Continue pressing CONFIG until the measured value display appears Alternatively press OUTPUT or PWR DSPL If you are configuring a slave unit press CONF
95. nks to indicate that the OVP function has 1 2 3 Press OUTPUT to turn output on 4 been activated LX VOLTAGE REGULATED DC POWER SUPPLY Ait at olUPR OCK REMOTE LAN h ai pP coma an DSPL LOCAL Eg J alt mie Co EJ Blinking in orange AA Lit s 5 Check that output has turned off 6 Turn the POWER switch off Display of the OVP activation alarm To check the operation of the OCP function carry out the procedure below Short the output terminal Turn the POWER switch on Set the output current to a value lower tha Press OUTPUT to turn output on The OUTPUT LED lights O ahrhWhDd Check that the OUTPUT LED in the display area is turned off n the OCP trip point Slowly turn the CURRENT knob clockwise When the output current exceeds the OCP trip point the front panel display area s ALARM LED lights and the OUTPUT LED blinks to indicate that the OCP function has been activated REGULATED DC POWER SUPPLY cc Oo b aN ERRA A GIP h tmnt LOCK REMOTE LAN ff UTP Gi T OVP CONFIG PWRDSPL LOCAL SHIFT s tls K Ca La La Ea mno Lit ALM oe G LOCK Blinking in orange 7 Check that output has turned off Display of the OCP activation alarm If you do not change the output settings the OVP or OCP function will be activated again Basic Functions N Protection Functions and Alarms Undervoltage limit UVL This protection
96. od uct s rated output voltage e Twist the positive and negative cables together and make the connection to the load as short as possible Oscillation may occur as a result of wiring inductance Output Chassis Master unit Output Chassis Slave unit 1 Output Chassis Slave unit 2 A A WN erminal erminal Remove the OUTPUT terminal covers Relay terminal Load Load connections for parallel operation two slave units The negative side is connected to the chassis terminal in this example Turn off all the PWX750MLs that you want to connect in parallel Connect the load cables to the output terminals of the master unit and the slave units Connect the load cables of the master unit and slave units to the load through a relay terminal block Use load cables that have sufficient current capacity Use load cables of equivalent length and cross sectional area to connect each power supply to the relay terminal block and wire the cables so that they are as short as possible 50 cm or less Also make the connection from the relay terminal block to the load block as short as possi ble Wire the J1 connector signal cables and the load cables as far apart as possible 5 Connect the output terminals positive or negative of the master unit and the slave units to the chassis terminals Connect the same polarity output terminals on the master unit and slave units If y
97. og Interface Connector PWX Z CAUTION When using the isolated analog interface do not apply signals to VPGM pin 22 and IPGM pin 21 of the J1 connector If you do the connected device may malfunction or the PWX750ML may not operate properly The other functions of the J1 connector can be used normally For details on the J1 connec tor functions see About the J1 Connector on page 54 When the PWX750ML series is shipped from the factory connec tors are attached to the Isolated Analog Interface terminals If they are damaged or lost contact your Kikusui agent or distributor 133 7 f 5 OTF oy CL 84 61 8209 The isolated analog interface connector which is on the rear panel can be split into two parts the socket attached to the PWX750ML and the detachable plug To minimize the influence of noise we recommend that you use shielded twisted pair wires to make connections Socket MC1 5 9 G 3 5 Phoenix Contact eS ee eee L Detachable plug for wiring MC1 5 9 ST 3 5 Phoenix Contact 9 TA AARAAARA 1 Cable AWG 28 to AWG16 L Trara Length of covering removed 7mm from the end of the cable Isolated programming Screw tightening torque monitoring connector 0 22 Nem to 0 25 Nem Pin n w Isolated analog interface Signal name Description no Voltage control Current control OVto5V 1 VPGM_IS Output voltage control 2 K p I or 0 V to 10 V
98. oint is reached and the power supply automatically switches to CV mode To maintain operations in CC mode increase the voltage limit PWX Using the PWX750ML as a CV or CC Power Supply PWX When using the PMX750ML as a constant voltage power supply the set current is the limit to the current that can flow through the load When using the PMX750ML as a constant current power supply the set voltage is the limit to the voltage that can be applied to the load If the specified limit is reached the PMX750ML automatically switches its operation mode When the PMX750ML switches its operation mode the lit LED in the display area CV LED or CC LED changes to indicate the switch Turn the POWER switch off Connect the load to the output terminals Turn the POWER switch on If the OUTPUT LED in the display area is lit press OUTPUT to turn the output off Press SET to change to the setting display The SET key lights Turn the VOLTAGE knob to set the voltage Voltage range O V to 84 V Turn the CURRENT knob to set the current Current range O A to 29 4 A nN Oo OA UNa Press OUTPUT to turn output on The SET LED turns off and the OUTPUT LED in the display area lights The voltage and current are generated from the output terminals When the PMX750ML is operat ing as a constant voltage power supply the CV LED in the display area lights When the PMX750ML is operating as a constant current power supply the CC LED l
99. ol Possible logic selections Apply a LOW 0 V to 0 5 V or short circuit to set the OUT ON OFF CONT pin 18 of the J1 connector to LOW Apply a HIGH 4 5 V to 5 V or open circuit to set the OUT ON OFF CONT pin 18 of the J1 connector to HIGH Isolated shutdown control Apply a LOW 0 V to 0 5 V or short circuit to set the SHUT DOWN pin 6 of the J1 connector to LOW Isolated monitor signal output Voltage contr ol Isolated voltage monitor VMON_IS OVto5V 0Vto10V Isolated current monitor IMON_IS OVto5V 0Vto10V Isolated monitor common Accuracy 4 of rtg Isolated external control input Current contro Isolated output voltage control VPGM_IS 0 to 100 of the rated output voltage 4 mA to 20 mA Isolated output current control IPGM_IS 0 to 100 of the rated output voltage 4 mA to 20 mA Isolated output Accuracy 5 of rtg control common Temperature 200 ppm C coefficient Input impedance 50 QO Isolated output on off control Possible logic selections Apply a LOW 0 V to 0 5 V or short circuit to set the OUT ON OFF CONT pin 18 of the J1 connector to LOW Apply a HIGH 4 5 V to 5 V or open circuit to set the OUT ON OFF CONT pin 18 of the J1 connector to HIGH Isolated shutdown control Apply a LOW 0 V to 0 5 V or short circuit to set the SHUT DOWN pin 6 of the J1 connector to LOW Isolated monitor signal outp
100. oltage Vext is changed in the range of 0 V to 5 V CF07 Lo or in the range of 0 V to 10 V CF07 Hi External voltage Vext 0 V to 5 V CF07 Lo External voltage Vext 0 V to 10 V CF07 Hi lo Irtg x Vext 5 in A lo Irtg x Vext 10 in A Vext 5 x lo Irtg in A Vext 10 x lo Irtg in A External resistance Rext connection For Rext use a resistor that is rated at ous eeiaeanaieel approximately 10 kQ 1 2 W or greater Wiper twisted pair wire PWX that has a low temperature coefficient and that will change little over time Examples of such resistors are metal film or wire wound resistors To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across Rext and keep the wire as short as possi ble If the wiring is long it becomes easy for noise to influence the opera tion of the PWX750ML Even if you use wires that are designed to suppress noise the PWX750ML may not operate properly If you use a shielded cable connect the shield to the negative output terminal Use pins 20 21 and 23 of the J1 connector PWX Controlling the Output On and Off States A WARNING p 41 PWX This section explains how to use an external contact to control the output on and off states Risk of electric shock The insulation of the external contact S and the connected cable must be greater than or equal to the isolation voltage of the PWX750ML 250 Vmax
101. onitor voltage range 0 V to 5 V or 0 V to 10 V IMON Setting 2 5 of rtg accuracy Status signal OUTON STATUS Turns on when the output is on output CV STATUS Turns on during CV operation CC STATUS Turns on during CC operation ALM STATUS Turns on when an alarm has been activated PWR ON STATUS Turns on when the power is turned on J1 connector on the rear panel Photocoupler open collector output maximum voltage 30 V maximum current sink 8 mA isolated from the output and control circuits status commons are floating withstand voltage of less than or equal to 60 V and status signals are not mutually isolated Specifications gt 89 90 PWX750ML Control features External control Output voltage control VPGM 0 to 100 of the rated output voltage Selectable control voltage range 0 V to 5 V or O V to 10 V Accuracy 5 of rtg Output current control IPGM 0 to 100 of the rated output current Selectable control voltage range 0 V to 5 V or O V to 10 V Accuracy 5 of rtg Output on off control OUTPUT ON OFF CONT Possible logic selections Turn the output on using a LOW 0 V to 0 5 V or short circuit turn the output off using a HIGH 4 5 V to 5 V or open circuit Turn the output on using a HIGH 4 5 V to 5 V or open circuit turn the output off using a LOW 0 V to 0 5 V or short circuit Output shutdown control SHUT DOWN Tu
102. or of the PWX750ML and appears in the output Therefore the output ripple noise may not meet the specifications of the PWX750ML To reduce the influence of noise on the output connect a 2 core shielded wire or a twisted pair wire across Vext and keep the wire as short as possible If the wiring between the PWX750ML 2 core shielded wire or twisted pair wire PWX and the external contact is long it becomes easy for noise to influence the operation of the PWX750ML Even if you use cables that are designed to suppress noise the PWX750ML may not operate properly External Control Q 61 62 Controlling the Output Current If you use a shielded cable connect the shield to the negative output terminal If the shield needs to be connected to the Vext side see Cautions when using the external voltage Vext Use pins 21 and 23 of the J1 connector Control using an external resistance Rext By using an external resistance Rext to change the reference voltage s voltage divider ratio you can change the output current lo in the range of 0 to the 105 of the rated output cur rent Irtg To use an external resistance Rext to control the output current set the CC control using an external voltage or an external resistance in the CONFIG settings so that external voltage control is enabled CF05 on The output current lo varies in the range of O to the rated output current Irtg when the external v
103. ou are using the units under floating conditions do not connect the terminals Parallel Series Operation gt 73 74 Master Slave Parallel Operation 6 Attach the OUTPUT terminal covers If you have a third and fourth slave unit connect them in the same manner Settings master slave parallel operation Setting the master unit the slave units and the number of units in parallel operation including the master unit Turn the output off and then configure the master unit CF01 2 to 4 and the slave units CF01 SLAV in master slave parallel operation On the master unit set the number of units in master slave parallel operation CF01 2 to 4 In the factory default settings the PWX750ML is set to independent operation CF01 1 Turn the POWER switch off and on to enable the setting Be sure to set the number of units in master slave parallel operation CF01 to the actual number of units that are connected If this parameter is incorrect settings such as those for the current and the overcurrent protection OCP cannot be set correctly and the measured current will not be displayed correctly Setting the voltage and current Use the master unit to set the voltage and current The current that is output is the sum of the currents of the master unit and the slave units When you set the number of units in master slave parallel operation CF01 the maximum output current 105 of the rated output current of a sin
104. ou can switch the display so that it shows power The power is displayed on unit 1 and unit 2 REGULATED DC POWER SUPPLY cv Lx Unit 1 oa VOLTAGE j Hl PRESET LOCK REMOTE LAN ff N OUTP SET Poop OVP Cone PWR DSPL ea SHIFT F rine E Ea PA o herd REGULATED DG POWER SUPPLY Unit 2 ov LXI CURRENT VOLTAGE mH 7 oh LOGK REMOTE LAN ff Example of the panel display Ave eee game fou Pya nsa roca A during series operation m The output current is 28 A External control This is available Chapter External monitoring During monitoring be careful of shorts and electric shocks When monitoring the out put voltage or output current during master slave series operation the electric poten tial of the commons of the master unit s monitor signal and the slave units monitor signal are different N WARNING e External monitoring of the output voltage V MON You can monitor the output voltage of each unit To calculate the total output voltage add the monitor values of the master unit and the slave unit e External monitoring of the output current 1 MON This can only be monitored from the master unit Status monitors You can monitor the status of the following items from the master unit and from the slave unit constant voltage mode CV STATUS constant current mode CC STATUS output on POWER switch on and alarms PWX Series Operation Remote sensing
105. ping terminals to the load cables The output terminals have bolt holes M6 for connecting the load cables Use crimp ing terminals that are designed for M6 bolts 4 Use the included bolt set to connect the load cables to the output termi nals Connect the positive cable to the positive output terminal and the negative cable to the negative output terminal Bolt M6 Spring washer Use the M6 bolt set to connect the cables PWX Connecting to the Output Terminals Attaching the OUTPUT terminal cover Remove the screw that is attached next to the output terminals on the PWX750ML Use this screw to attach the OUTPUT terminal cover Place the bottom half of the OUTPUT terminal cover underneath the load w Memo cables connected to the output terminals Both the top and bottom of the OUTPUT terminal an cover are the same E shape Remove the screws and then line up the cover 3 Align the hooks of the top half of the OUTPUT terminal cover with the bottom half of the OUTPUT terminal cover Pushing the top half of the OUTPUT terminal cover toward the rear Hrt Memo panel slide the top half of the OUTPUT terminal cover onto the bottom It is easier to slide the OUTPUT terminal cover half in place if you make the woe load cables perpendicular Continue sliding the cover until you hear a click with the PWX750ML Top cover Push this part toward the panel A Line up the two halv
106. put on and off Press OUTPUT on unit 1 and unit 2 to turn the output on or off PWX Parallel Series Operation gt 79 80 This page is intentionally blank PWX Maintenance This chapter explains how to perform cali bration Calibration The PWX750ML is calibrated before shipment To maintain long term performance we rec ommend periodic calibration For calibration contact your Kikusui agent or distributor If you are going to calibrate the PWX750ML yourself follow the procedures below All of the calibration items of the PWX750ML are described Calibration overview The following eight calibration items are available Be sure to calibrate both the offset and full scale values Output voltage offset 10 e Output voltage full scale 100 Voltmeter offset 0 e Voltmeter full scale 100 Output current offset 10 e Output current full scale 100 Ammeter offset 0 e Ammeter full scale 100 Required devices DC voltmeter DVM with a measurement accuracy of 0 02 or more Shunt resistor Recommended shunt resistor Model Rating Tolerance PWX750ML 30 A 50 mV 1 67 mQ lt 0 1 Environment Perform calibration in the following environment e Temperature 23 C 5 C e Humidity 80 rh or less To minimize the calibration error due to initial drift warm up the PWX750ML for at least 30 minutes before calibration In addition warm up the DVM and shunt resistor
107. remote sensing p 20 cables connected in reverse cables may be connected in reverse or the ends of the cables may be shorted Check the load cables Are you using remote sensing with long Set up the environment so that the voltage p 20 load cables drop in each load cable is within the com pensation voltage range 4 V for a single line Are you using external control with a loose Connect the cable correctly p 54 control cable Is the external voltage excessive during Apply the correct voltage p 59 external control p 61 Is the internal temperature too high The overheat protection function has been p 34 activated Check the operating environ p 93 ment The louver may be clogged or the fan _ may be broken Check them The ALARM LED lights when Is a large external voltage such as that The overvoltage protection function or the p 50 the load is changed of a battery load being applied Is the actual output voltage higher than the set voltage that is displayed on the panel Is a special load connected overcurrent protection function may have been activated Check them The PWX750ML may be overloaded Check the load Unable to perform panel operations Symptom Items to Check Remedy Unable to perform panel oper Is the LOCK LED lit Release the panel operation lock p 49 augns Is the REMOTE LED lit To control the PWX750ML from the panel p 50 Is the PWX750ML being controlled via the Press he LOCA SW
108. rns the output off with a LOW 0 V to 0 5 V or short circuit Alarm clear control ALM CLR Clears alarms with a LOW 0 V to 0 5 V or short circuit 1 J1 connector on the rear panel Other features Master slave parallel operation Including the master unit up to four units all the same model can be connected Series operation Up to two units all the same model can be connected Preset memory Up to three sets of the following settings can be saved the set voltage the set current the set OVP the set OCP and the set UVL Key lock Locks the operation of all keys other than the OUTPUT key Multichannel Between master unit and LAN USB RS232C VMCB PC Slave unit LAN PWX PWX750ML PWX Interface Common Software protocol IEEE Std 488 2 1992 specifications Command language Complies with SCPI Specification 1999 0 Has a compatibility mode switchable e Genesys series made by TDK Lambda e N5700 and N8700 made by Agilent Technologies e DSC series made by Sorensen e PAG series made by Kikusui RS232C Hardware Complies with the EIA232D specifications excluding the con nector Ru 45 connector Baud rate 1200 2400 4800 9600 and 19200 bps Data length 8 bits Stop bits 1 bit Parity bit None No flow control Program message LF during reception CR LF during transmission terminator USB Hardware Complies wit
109. rst slave unit to the J1 connector on the rear panel of the second slave unit If you are using the optional parallel operation signal cable PCO1 PCO2 or PCO3 PWX the connector is already assembled so you can use it as is If you have a third slave unit connect it in the same manner Master Slave Parallel Operation PWX Connecting the load parallel operation 7 WARNING Risk of electric shock Turn the POWER switch off before you touch the OUTPUT ter minals Attach the OUTPUT terminal cover after you finish wiring the load Z CAUTION When you connect the output terminals to the chassis terminals be sure to connect the same polarity output terminals positive or negative of the master unit and the slave units to the chassis terminals If you connect different polarity output terminals of the master unit and the slave units to the chassis terminal the output will be grounded through the power cable s GND wire Not only will this make the output incorrect it will also cause the chassis terminal cable to burn out When the load cables are distributed over longer distance the phase shifting due to wiring inductance and capacitance may go beyond the limit and result in oscillation To prevent such oscillation connect an electrolytic capacitor with several hundreds to several tens of thousands uF across the load Use an electrolytic capacitor that has a withstand voltage that is at least 120 of the pr
110. sensing terminal must have an insulation capacity that is greater than or equal to the isolation voltage of the PWX750ML with respect to the chassis Isolation voltage indicates the maximum allowed voltage that appears across the output terminal of the power supply unit and the protective conductor terminal chassis terminal When the output terminal is not grounded floating The output terminal of the PWX750ML is isolated from the protective conductor terminal If you connect the GND wire of the power cord to the ground terminal of the switchboard the chassis of the PWX750ML is set to ground potential Pins 5 to 13 for external control and parallel operation and 18 to 25 for external control and output monitoring of the rear panel J1 connector are at approximately the same electric potential as the PWX750ML s negative output terminal Cables and devices that are con nected to these pins must have an insulation capacity greater than or equal to the isolation voltage of the PWX750ML PWX Isolated Because the output terminal is floating the Approximately the same section shown on a gray potential as the negative background must have an output terminal insulation capacity greater than or equal to the PWX750ML isolation voltage Approximately the same potential as the negative output terminal INPUT PWX Output Terminal Insulation When the output terminal is grounded PWX If the positive output termin
111. set the preset memory current 3 Press OCP OVP The OCPeOVP key lights and the OVP trip point and OCP trip point are displayed in the display area 4 While viewing the values displayed on the panel turn the VOLTAGE knob to set the preset memory OVP value and turn the CURRENT knob to set the preset memory OCP value 5 Press OCP OVP again The present UVL trip point is displayed 6 While viewing the value displayed on the panel turn the VOLTAGE knob to set the preset memory UVL value 7 Press SHIFT the memory key A B or C to which you want to save the settings Hold the keys down until their LEDs turn on The PRESET A PRESET B or PRESET C LED in the display area whichever one cor responds to the memory entry that you selected lights to indicate that the preset memory entry has been saved By following step 7 you can save preset memory entries when the output is on and the mea sured value display is being shown the SET key LED is off After you save a preset memory entry press SET to view the preset memory values Basic Functions N 47 48 Preset Memory Function Recalling preset memory entries p 40 You can recall preset memory entries from the measured value display when the SET key LED is off and from the setting display when the SET key LED is lit If the output is on the values in the preset memory entry are applied to the output the moment that the preset memory entry is recalled the momen
112. smaller voltage being applied at the load end The PWX750ML has a sensing function that compensates for this voltage drop up to approximately 4 V for a single line If the voltage drop exceeds this level use wires that have a greater cross sectional area Installation and Preparation 17 18 Connecting to the Output Terminals Risk of electric shock Turn the POWER switch off before you touch the OUTPUT terminals Even if you turn the output off or turn the POWER switch off if the bleeder on off set ting CF11 is set to oFF the voltage that was present when the output was on will remain at the output terminals Set the bleeder on off setting to on before you touch the output terminals e Regardless of whether load cables are connected to the output terminals be sure to attach the OUTPUT terminal cover before turning the POWER switch on terminal terminal Chassis terminal 1 Turn the POWER switch off Check that there is no voltage across the output terminals 2 Connect one end of the included chassis connection wire to the chassis terminal and then connect the other end of the wire to the negative or positive output terminal Use the screw that is attached to the PWX750ML to connect the wire to the chassis terminal Use the screw that is attached to the output terminal to connect the wire to the output terminal Use an M3 screw and an M4 screw to connect the wire Screw M4 3 Attach crim
113. sponse wave form of the actual output voltage or current External monitoring of the operation status The J1 connector has status outputs that can be used to externally monitor the operation sta tus of the PWX750ML The following five items make up the status outputs The outputs are open collector outputs of photocouplers they are isolated from the internal circuits of the PWX750ML The status common is floating that is it has an isolation voltage of less than or equal to 60 V If connected for master slave parallel operation STATUS COM pin 1 of the J1 connector of the master unit will be connected to A COM pin 19 of the J1 connector of the slave unit it will no longer be floating If the positive output terminal is connected to the chassis terminal in this condition the status common will be at an electric potential that is lower than that of the chassis terminal by the output voltage Because the positive output terminal is at ground potential secure an insulation capacity greater than or equal to this product s isolation volt age relative to the chassis The maximum ratings of the signal terminals are as follows Maximum voltage 30 V Maximum current sink 8 mA PWX External Control 67 68 Pin no Signal name Description Circuit STATUS COM This is the status output common This is the photocoupler emitter output CV STATUS This is set to low level when the PWX750ML is in constant vol
114. t that flows through the capacitor of the internal EMC filter circuit immediately after the POWER switch is turned on for approximately 1 ms For all loads with 100 Vac input PWX PWX750ML PWX Output Rating Output voltage 80 V Output current 28 A Output power 750 W Voltage Setting range OVto84V Setting accuracy 0 05 of setting 0 05 of rtg Line regulation 10 mV Load regulation 10 mV Transient response 1 ms or less Ripple noise p p 80 mV rms 8 mV Rise time Rated load 100 ms No load 100 ms Fall time 8 Rated load 100 ms No load 450 ms Maximum remote sensing com 4V pensation voltage single line Temperature coefficient MAX 100 ppm C during external control Current Setting range 0 A to 29 4 A Setting accuracy 0 5 of setting 0 1 of rtg Line regulation 4 8 mA Load regulation 10 6 mA Ripple noise rms 65 mA Temperature coefficient TYP 100 ppm C The maximum output voltage and current are limited by the maximum output power 2 85 Vac to 135 Vac or 170 Vac to 265 Vac fixed load 3 The amount of change that occurs when the load is changed from no load to rated load rated output power rated output voltage with rated output voltage The value is measured at the sensing point 4 The amount of time required for the output voltage to return to a value within rated output voltage 0 1
115. t that the settings are applied There are two methods to recall a preset memory entry One method is to display the saved contents for confirmation and then recall CF04 on The other is to recall immediately with out displaying the contents CF04 oFF If you hold down SHIFT the memory key A B or C from which you want to recall the pre NOTE set memory entry the present values in use will be saved to the preset memory entry instead When you recall a preset memory entry the following items are set to their factory default set tings e Constant current control using an Vext or Rext CF05 oFF p 40 p 41 p 42 Constant voltage control using an Vext or Rext CF06 oFF Memo This is convenient when you want to view the contents that have been saved to memory Memo Press OCP OVP CONFIG or PWR DSPL to cancel the recall operation y Memo This is convenient when you know the contents that have been saved to memory Output on off control using an external contact CF09 oFF Current setting limit CF14 on e Voltage setting limit CF15 on Displaying the saved contents for confirmation and then recalling 1 Press SHIFT the memory key A B or C from which you want to recall the preset memory entry The SET LED and the contents voltage and current of the loaded preset memory that are shown in the display area blink If you press another memory key the contents of the corresponding memory
116. t voltage CV constant current CC automatic crossover power supply that can output a wide range of voltage and current within rated output power It can be controlled remotely through the standard equipped communication feature Model Maximum Operating Power operating voltage current PWX750ML 28 A OVto80V 750W PWX Features Communication feature RS232C USB and LAN interfaces are all installed as stan dard The remote interfaces comply with IEEE Std 488 2 1992 and SCPI Specification 1999 0 Because the LAN interface complies with the LXI standard the construction of a highly cost effective system is possible If you use the multichan nel VMCB function you can construct a multichannel power supply system in which up to 31 PWXs are controlled from a single PC Master slave parallel operation You can increase the PWX750ML s output current by con necting up to four units in parallel You can set one unit as the master unit and control the remaining units as slave units Setting preset feature You can save up to three sets of output settings the combi nation of the voltage value and current value You can sim ply select a set of output settings that you want to use rather than having to specify each setting every time Automatic output on setting You can set the PWX750ML so that when a protection func tion is activated and the output is turned off output is auto matically turned back on when the problem th
117. tage and output current in the measured value display E XI T ZATON GOUD T LOCK REMOTE LAN OUTPUT SET OCP OVP TONER PWR DSPL LOCAL Bia FHN E a a a a a A ALMCLRA A G LOCK m Power display In the measured value display press PWR DSPL to display the output power on the amme ter The output power is calculated from the measured output voltage and the measured output current When the power is being displayed the PWR DSPL key lights Press PWR DSPL again to turn off the LED and return to the measured value display REGULATED DC POWER SUPPLY CURRENT VOLTAGE LOCK REMOTE LAN Ip OUTPUT SET OCP OVP TS n SHIFT e cs Co ALMCLR A z AOR Lit FINE Setting display Press SET to light its LED and display the present output voltage and output current settings Press SET again to return to the measured value display D DC Pe SUPPLY LXI CURRENT VOLTAGE 7 ma CK REMOTE LAN oures S VAcpove CONFIG PWADSPL LOCAL PINIA Co Ear FS 3 AAN BS B c LocK Lit When you recall a preset memory entry the values stored in the preset memory entry are dis played on the panel 24 PWX Panel Operations E Overvoltage protection and overcurrent protection setting display Press OCP OVP to light its LED and display the present overcurrent protection and overvolt age protection settings SUPPLY DI CURRENT VOLTAGE _ Of w OCK REMOTE LAI OUTPUT SET aS sith A PWROSPL LOCAL PETS FINE Cor
118. tage mode This is the photocoupler open collector output CC STATUS This is set to low level when the PWX750ML is in constant current mode This is the photocoupler open collector output 14 ALM STATUS This is set to low level when a protection function OVP OVP2 OCP OHP FAN SEN AC FAIL SD is activated This is the photocoupler open collector output 15 16 PWR ON STATUS OUT ON STATUS This is set to low level when the PWX750ML is turned on PWR ON STATUS This is the photocoupler open collector output This is set to low level when the output is turned on This is the photocoupler open collector output HH VE VH VH V 14 15 16 PWX Parallel Series Operation This chapter describes the functions of series operation and the master slave par allel operations as well as the connection setup and operation procedures 70 Master Slave Parallel Operation Z CAUTION In master slave parallel operation one unit is the master unit and all other units connected in parallel are slave units The master and slave units must all be the same model You can con trol the whole system by operating the master You can use master slave parallel operation to expand the output current maximum output current the rated output current of one unit x the number of units connected in parallel You can connect up to four units including the master in parallel The difference in the
119. ted Remote operation REMOTE LED lights in green during remote control LAN operation LAN LED lights or blinks depending on the LAN communica tion status No fault status Lights in green Fault status Lights in red Standby status Lights in orange WEB identify status Blinks green Key lock operation LOCK LED lights in green when the keys are locked Preset memory When a preset memory entry is being used the PRESET A B or C LED lights in green 1 Press PWR DSPL to display the power on the ammeter Each time you press this key the display switches between power and current PWX PWX750ML PWX Protection functions Overvoltage protection OVP Turns the output off displays OVP and lights ALM Setting range Setting accuracy 8 V to 89 6 V 10 to 112 of the rated output voltage 1 5 of rtg Overvoltage protection 2 OVP2 Turns the output off displays OVP2 and lights ALM Value fixed 96 V 120 of the rated output voltage Overcurrent protection OCP 1 Turns the output off displays OCP and lights ALM Setting range 2 8 A to 31 36 A 10 to 112 of the rated output current Setting accuracy 3 of rtg Undervoltage limit UVL Cannot be set to a value less than or equal to the set voltage Value 0V to 84 V 0 to 105 of the rated output voltage Overheat protection OHP Turns the outp
120. the OVP trip point and OCP trip point are displayed in the display area 2 While viewing the panel display turn the VOLTAGE knob to set the OVP trip point or the CURRENT knob to set the OCP trip point OVP setting range 8 00 V to 89 60 V OCP setting range 2 80 A to 31 36 A 3 Press OCP OVP twice to finalize the settings The OCPeOVP key turns off and the PWX750ML returns to the measured value dis play PWX Protection Functions and Alarms PWX E Checking OVP and OCP operation The OVP and OCP functions are designed to protect the load If you use the CONFIG settings to limit the voltage setting CF15 ON you will no longer be able to set the output voltage to a value that exceeds the OVP trip point This means that you won t be able to check the operation of the OVP function If you use the CONFIG settings to limit the current setting CF14 ON you will no longer be able to set the output current to a value that exceeds the OCP trip point This means that you won t be able to check the operation of the OCP function To check the operation of the OVP function carry out the procedure below Check that the OUTPUT LED in the display area is turned off Set the output voltage to a value lower than the OVP trip point The OUTPUT LED lights Slowly turn the VOLTAGE knob clockwise When the output voltage exceeds the OVP trip point the front panel display area s ALARM LED lights and the OUTPUT LED bli
121. the abnor mal temperature turn the power switch on The air inlet louver may be clogged or the fan may be broken Check them Is a shutdown SD signal being applied Set pin 6 of the J1 connector to HIGH p 65 4 5 V to 5 V or open the pin or eliminate the shutdown SD signal PWX S N 0000o Troubleshooting Unable to set the output voltage or output current correctly Symptom Items to Check Remedy The output voltage cannot be Have you tried to specify a value that is You cannot set the output voltage to a p 32 set correctly higher than the OVP trip point value that is 95 of the OVP trip point or higher Check the OVP trip point Have you tried to set a voltage value that You cannot set the output voltage to a p 34 is lower than the voltage value that is value that is lower than the voltage that is specified by UVL specified by UVL Check the voltage that is specified by UVL The output current cannot be Have you tried to specify a value that is You cannot set the output current to a p 32 set correctly higher than the OCP trip point value that is 95 of the OCP trip point or higher Check the OCP trip point The output is unstable Symptom Items to Check Remedy When the output is on turning Is the operation mode switching from CV Change the setting output voltage or out p 29 the VOLTAGE knob or CUR to CC or CC to CV put current that is limiting the output toa p 100 RENT knob results in
122. through an open collector photocoupler 2 16 OUT ON STATUS On when output is on output through an open collector photocoupler 2 17 NOC Not connected 18 OUT ON OFF CONT Output on off terminal On when set to LOW 0 V to 0 5 V or shorted off when set to HIGH 4 5 V or 5 V or open CF10 Lo On when set to HIGH 4 5 V to 5 V or open off when set to LOW 0 V or 0 5 V or shorted CF 10 Hi 19 ACOM External signal common for pins 5 to 9 11 to 13 20 to 22 24 and 25 During remote sensing this is the negative electrode S of sensing input When remote sensing is not being performed this is connected to the negative output 20 REF OUT External resistance control terminal 5 25 V CF07 Lo or 10 5 V CF07 Hi The maximum output cur rent 2 5 mA 21 PGM Terminal used to control the output current with an external voltage or external resistance 0 V to 5 V 0 to 100 of the rated output current CF07 Lo 0 V to 10 V 0 to 100 of the rated output current CF07 Hi 22 VPGM Terminal used to control the output voltage with an external voltage or external resistance 0Vto5V 0 to 100 of the rated output voltage CF07 Lo 0 V to 10 V 0 to 100 of the rated output voltage CF07 Hi 23 ACOM External signal common for pins 5 to 9 11 to 13 20 to 22 24 and 25 During remote sensing this is the negative electrode S of sensing input When remote sensing is not being performed this is connected to the negative output 24 MON O
123. tial of this product You can use a voltage control 0 V to 5 V or 0 V to 10 V ora current control 4 mA to 20 mA uN Safety Precautions When using this product be sure to observe the Safety Precautions in the Safety information manual Precautions Concerning Installation Location When installing this product be sure to observe the Precautions Concerning Installation Location in the Safety information manual The following precautions pertain only to this product e When installing this product be sure to observe the temper ature and humidity ranges indicated below Operating temperature range 0 C to 50 C 32 F to 122 F Operating humidity range 20 rh to 85 rh no conden sation e When storing this product be sure to observe the tempera ture and humidity ranges indicated below Storage temperature range 20 C to 70 C 4 F to 158 F Storage humidity range 90 rh or less no condensation Notations Used in This Manual In this manual the PWX750ML Regulated DC Power Sup ply is referred to as the PWX Series or PWX750ML The term PC is used to refer generally to both personal computers and workstations The screen captures used in this manual may differ from the actual screens that appear on the PWX750ML The screen captures are merely examples The following markings are used in this manual Z WARNING Indicates a potentially hazardous situation which
124. ting the voltage or current to a value that exceeds the set OVP or OCP or to a value that is lower than the set UVL If you have selected to limit the voltage setting CF15 ON you will no longer be able to set the output voltage to a value that is 95 of the OVP trip point or higher or to a value that is lower than the UVL trip point In addition you will no longer be able to set the OVP trip point to a value that is lower than the set output voltage or the UVL trip point to a value that exceeds the set output voltage If you have selected to limit the current setting CF14 ON you will no longer be able to set the output current to a value that is 95 of the OCP trip point or higher In addition you will no longer be able to set the OCP trip point to a value that is lower than the set output current Basic Functions 31 32 Protection Functions and Alarms Overvoltage protection OVP overvoltage protection 2 OVP2 and overcurrent protection OCP The overvoltage protection OVP function is activated under the following conditions e When the output terminal voltage exceeds the set voltage OVP trip point e When the load or the PWX750ML is malfunctioning The overvoltage protection 2 OVP2 function is activated under the following conditions p 30 e When the output terminal voltage exceeds 120 of the rated output voltage when a voltage is being applied from an external source e When the load or the PWX750
125. tion of a signal to the rear panel J1 connector when an abnormal condition occurs If SD is activated turn the POWER switch off and on REGULATED DC POWER SUPP IXI CURRENT VOLTAGE 5 A AL a Alarm indication when the OCK AN Giaou e jE mie ve ry wee runosr LOCAL fila J shutdown SD function has ine AR A fa TE FiNEN cx been activated ACER f Power limit POWER LIMIT This function changes the output voltage or output current according to the changes in the load resistance This function limits the output power to a value that is approximately 105 of the rated output power This function does not turn the output off When the output limit function has been activated the ALARM LED blinks An alarm signal is not transmitted Power limit value fixed 787 5 W Communication monitoring WATCHDOG The watchdog function monitors the SCPI command communication status Communication is assumed to have stopped if there is no communication within the time period specified by the communication monitoring timer setting CF17 This function operates regardless of whether the product is in remote or local panel control mode When using local mode panel control set communication monitoring to off in the timer settings When using remote mode you can set the timer using a command OUTP PROT WDOG You cannot stop communication monitoring with the RST RCL or CLS command In the alarm state turn off
126. transformer is connected the output voltage increases and becomes unstable This can cause a malfunction For these types of loads connect a resistor RD as shown in the following figure to bypass the reverse current However the amount of current to the load decreases by Irp Pima om g l ana 7 A H l i D l Q a A A Eo Ro Load i Ad a Sos EA Equivalent circuit of the PWX750ML Regenerative load lo i EO in V E A Ro in Q lt F g Irp in A 3 5 0 P Ro Reverse current bypass dummy load 2 Eo Output voltage io Reverse current Irp Maximum reverse current Use a resistor with sufficient rated power for RD If a resistor with insufficient rated power for the circuit is used resistor RD will burn out Installation and Preparation 15 16 Load Considerations Loads with accumulated energy Connecting a load with accumulated energy such as a battery to the PWX750ML may cause current to flow from the load to the internal circuit of the PWX750ML This current may dam age the PWX750ML or reduce the life of the load For this type of load connect a reverse current prevention diode DRP between the PWX750ML and the load in series as shown in the following figure This cannot be used in conjunction with remote sensing eas aap amare E DRP ee Ta Q D Q DRP Reverse current protection diode 1 l Ma 1 l Sessions j
127. turning on their POWER switches simultaneously Installation and Preparation 13 14 Rack Mounting Turning the POWER switch Off Z CAUTION Flip the POWER switch to the O side to turn the PWX750ML off The PWX750ML saves the panel settings except the output on off setting that were in use immediately before the POWER switch was turned off You can use the CONFIG settings CF02 to select how the PWX750ML starts when the POWER switch is turned on If the POWER switch is turned off immediately after the settings have been changed the last settings may not be stored After you turn the POWER switch off wait at least 10 seconds after the panel display turns off before you turn the POWER switch back on Repeatedly turning the POWER switch on and off at short intervals can cause damage to the inrush current limiter Furthermore this will shorten the service life of the POWER switch and the internal input fuse Rack Mounting You can mount one or two PWX750MLs side by side to a rack You can use brackets or slide rails to mount the PWX750ML to a rack Remove the rubber feet before you mount the PWX750ML to a rack If you are mounting two PWX750MLs side by side install the optional support board to sup port the two PWX750MLs Attach the optional support angles KRB1 PWX SUPPORT ANGLE to support the PWX750ML We recommend that you keep all pieces that you have removed from the PWX750ML You will need these pi
128. unstable value greater than the present setting If output the setting is at maximum you must use a power supply that has a larger output volt age or current The output voltage or output Are you using master slave parallel opera Compared to independent operation the current fluctuates tion performance degrades slightly during master slave parallel operation Are the remote sensing cables and the When you are not using remote sensing p 20 sensing connectors connected connect the sensing connectors in local sensing mode Are both the CV and CC LEDs turned on If the output is oscillating when you are p 20 using remote sensing insert a capacitor across the load The circuit may be malfunctioning Imme diately stop using the PWX750ML and have it repaired Do the sensing cables or load cables have Turn the POWER switch off and check p 12 poor contact or are the cables broken the wiring Does the load current have peaks or is it The peak values may be exceeding the p 29 pulse shaped set constant current Increase the set con stant current or increase the current capacity The output voltage is offset Has 30 minutes passed since the power Warm up the PWX750ML for at least 30 from the voltage that the was turned on minutes PWX750ML was generating when it was turned on The output voltage does not Is the breeder circuit on off setting setto If the breeder circuit on off setting is setto p
129. ut Current control Isolated voltage monitor VMON_IS 4 mA to 20 mA Isolated current monitor IMON_IS 4 mA to 20 mA Isolated monitor Accuracy 4 of rtg Common Load impedance 500 Q or less PWX PWX750ML PWX General Weight main unit only Approximately 5 kg 11 02 Ib Dimensions See the outline drawing Environmental conditions Operating environment Indoor use overvoltage category II Operating temperature 0 to 50 C 32 F to 122 F Operating humidity 20 rh to 85 rh no condensation Storage temperature 20 C to 70 C 4 F to 158 F Storage humidity 90 rh or less no condensation Altitude Up to 2000 m Cooling method Grounding polarity Forced air cooling using fan Negative grounding or positive grounding possible Isolation voltage 250 V max Isolated Analog Interface 60 V max Withstand Between input and FG No abnormalities at 1500 Vac for 1 minute voltage Between input and output No abnormalities at 2000 Vac for 1 minute Between output and FG No abnormalities at 500 Vdc for 1 minute Between input and Iso No abnormalities at 2650 Vac for 1 minute lated Analog Interface Between output and Iso No abnormalities at 500 Vdc for 1 minute lated Analog Interface Insulation Between input and FG 500 Vdc 100 MQ or more 70
130. ut off displays OHP and lights ALM Fan failure protection FAN Incorrect sensing connection protection SENSE Low AC input protection AC FAIL Shutdown SD Turns the output off displays FAN and lights ALM Turns the output off displays SENS and lights ALM Turns the output off displays AC and lights ALM Turns the output off displays SD and lights ALM Power limit POWER LIMIT Lights ALM Value fixed 787 5 W approx 105 of the rated output power Communication monitoring WATCHDOG Turns the output off displays DOG and lights ALM This does not protect against the discharge current peak that is generated from the capacitors inside the PWX750ML output section when the load is changed suddenly Use the CONFIG settings to specify what happens when a protection function is activated and the output is turned off You can select to turn the output on automatically when the problem that caused the alarm is fixed CF03 Auto or to leave the output turned off when the problem that caused the alarm is fixed CF03 SAFE The specified protection operation is the same for the OHP FAN and AC FAIL alarms You cannot make separate settings for the OHP FAN and AC FAIL alarms Signal output Monitor Voltage monitor Selectable monitor voltage range 0 V to 5 V or 0 V to 10 V signal output VMON Setting 2 5 of rtg accuracy Current monitor Selectable m
131. ut protection AC FAIL protection function is activated output is turned off You can use the CONFIG set tings to select how the PWX750ML will perform after the problem that caused the alarm is fixed You can select to turn the output on automatically CF03 Auto or to leave the output off CF03 SAFE If you select to turn the output on automatically after the problem that caused the alarm is fixed the output will turn on automatically If an alarm still occurs even after you have corrected all the causes of alarms the PWX750ML may be malfunctioning Stop using it immediately and contact your Kikusui agent or distributor For an explanation of the problems that cause the alarms see the explanation of each pro tection function Alarm signal The alarm signal is isolated from other terminals as it is through an open collector photocou pler J1 connector ALM STATUS 16 _ uv Z STATUS CoM Maximum voltage 30 V PWX750ML Maximum current 8 mA Protection function activation PWX Setting limitation functions You can use the CONFIG settings to apply limits to the voltage and current settings You can set limitations so that the values do not exceed the set overvoltage protection OVP trip point and the set overcurrent protection OCP trip point and so that the values are not lower than the set undervoltage limit UVL trip point By using this feature you can avoid turning the output off by mistakenly set
132. utput current monitor 0 to 100 of the rated output current is generated as a voltage between 0 V and 5 V CF08 Lo or a voltage between 0 V and 10 V CF08 Hi 25 VMON Output voltage monitor 0 to 100 of the rated output voltage is generated as a voltage between 0 V and 5 V CF08 Lo or a voltage between 0 V and 10 V CF08 Hi 1 The status common is floating isolation voltage of 60 V or less it is isolated from the control circuit If connected for master slave parallel operation STATUS COM of the master unit will be connected to A COM of the slave unit it will no longer be floating 2 Open collector output Maximum voltage of 30 V and maximum current of 8 mA e e PWX 55 9 56 Output Terminal Insulation Z CAUTION Risk of electric shock For safety reasons even if the output terminal is grounded make sure that the insulation capacity of the output terminal including the sensing terminal is greater than or equal to the isolation voltage of the PWX750ML 250 Vmax If you cannot obtain a cable with sufficient rated voltage secure adequate withstand voltage by passing the cable through an insulation tube with a withstand voltage greater than the isolation voltage of the PWX750ML The signal cable may burn out If the PWX750ML is to be controlled through an external volt age Vext do not ground the external voltage leave it floating The cable and load that are connected to the output terminal including the
133. utput terminal voltages lower than this voltage If the output terminal voltage is near 0 V hardly any current will be sunk even when the breeder is on Basic Functions N 49 50 Switching from Remote Mode to Local Mode E Fall time of the output voltage when the breeder is off This is the time period for the rated output voltage to fall from 90 to 10 when the out put is changed from on to off under no load conditions Fall time 250 seconds Switching from Remote Mode to Local Mode When the PWX750ML is being controlled remotely the REMOTE LED in the display area lights FINE To switch the PWX750ML to local mode from the front panel press LOCAL 6 SUPPLY og m F El gg CE Er ogroy OVP CONFIG PWR DSPL o cA c fz ate CLA e PWX Factory Default Settings Initialization PWX If you hold down SHIFT LOCAL while you turn the POWER switch on the PWX750ML will be reset to the factory default settings The factory default settings are shown below E Basic settings Basic item Parameter description Output voltage OV Output current 105 of the rated output current OVP overvoltage protection 112 of the rated output voltage OCP overcurrent protection 112 of the rated output current UVL undervoltage limit OV E CONFIG settings T gt CONFIG parameter Param
134. vide us with The model marked in the top section of the front panel The firmware version see page 13 The serial number marked on the rear panel Trademarks Microsoft Windows and Visual Basic are registered trade marks of Microsoft Corporation in the United States and or other countries All company names and product names used in this manual are trademarks or registered trademarks of their respective companies Copyrights The contents of this manual may not be reproduced in whole or in part without the prior consent of the copyright holder The specifications of this product and the contents of this man ual are subject to change without prior notice 2011 Kikusui Electronics Corporation Checking the Package Contents When you receive the product check that all accessories are included and that the accessories have not been damaged during transportation If any of the accessories are damaged or missing contact your Kikusui agent or distributor We recommend that you save all packing materials in case the product needs to be transported at a later date Component Quantitiy Power cord 1 pc Output terminal cover 1 set J1 connector plug kit 1 set Output terminal M6 bolt set 2 sets Chassis connection wire 1 pe Packing list 1 pe English 1 pc Quick reference Japanese 1 pe Safety information 1 pe CD ROM 1 disc PWX Product Overview The PWX750ML is a constan
135. y SLAV for the units that you want to use as slaves This parameter is applied when you restart the PWX750ML Changing this setting may affect the settings of the master unit or the slave units that are con nected in parallel Value Parameter description SLAV Use the PWX as a slave unit 1to4 Set the total number of units 1 to 4 1 indicates independent operation factory default setting CF02 Power on status parameter Sets the condition that the PWX750ML will be in when the power is turned on This setting is invalid when you are using an external contact to turn the output off This parameter is applied when you restart the PWX750ML You can only specify this parameter when the PWX750ML is being used as a master unit Value Parameter description SAFE The settings that were in use immediately before the POWER switch was turned off are used The output is off factory default setting Auto The settings that were in use immediately before the POWER switch was turned off are used This includes whether output was on or off Forc The settings that were in use immediately before the POWER switch was turned off are used The output is turned on Basic Functions N 39 40 CONFIG Settings CF03 Method for clearing OHP FAN and AC FAIL alarms Sets the method for clearing alarms when overheat protection OHP fan failure protection FAN or low AC input protection AC FAIL has been activated You
136. y reaches the smallest display digit of the set voltage or current E Fine adjustment You can change the resolution of the VOLTAGE and CURRENT knobs Hold down SHIFT while you turn the VOLTAGE knob or CURRENT knob to make small changes to the value Basic Functions N 25 26 Output Operations The output turns on and off each time you press OUTPUT When output is on the OUTPUT LED in the display area lights When the output is off the OUTPUT LED in the display area turns off When the output is on output is generated at the present set values If you change the settings while the output is on the changes are applied immediately to the output If the output is off the setting display will appear the SET key lights as soon as you change the settings Then you can press OUTPUT to output using the new settings You can use external control to turn the output on and off You can use the CONFIG settings to set the output on startup state CF 12 prioritize CC or CV REGULATED DC POWER SUPPLY J CURRENT VOLTAGE A oi LOCK REMOTE LAN f ua OGP OVP CONFIG PWRDSPL LOCAL st SHIFT ine ORAS he pa ta ra a gt ff Output on Output on or off when the PWX750ML turns on In the factory default settings output is off when the PWX750ML turns on Using a CONFIG parameter CF02 Forc you can set the PWX750ML so that output is turned on at power on See p 32 If you set the PWX750ML so that output is turned o

PWX750ML User`s Manual - Kikusui Electronics Corp.

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