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PLZ164WL PLZ334WL User`s Manual
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1. No Name Function See 11 CURSORA W lt q p Up down left and right keys INS key Inserts a step Sequence editing DEL key Deletes a step Sequence editing PREV key Returns to the previous screen menu settings NEXT key Switches to the next screen menu settings 12 LOCAL key Used to switch to local mode from remote mode p 42 LOCK key Used to set the key lock p 41 13 ENTER key Used to confirm the input menu settings ABC key Used to save settings to the preset memory p 45 14 SHIFT key Shift key p 26 15 RECALL key Used to recall the setup memory p 48 STORE key Used to save the setup memory p 47 16 Ckey Used to access preset memory C p 45 PAUSE key Pauses the PLZ 4WL during sequence operation p 77 17 Bkey Used to access preset memory B p 45 RUN STOP key Stops the PLZ 4WL during sequence operation p 77 18 Akey Used to access preset memory A p 45 EDIT key Used to edit sequences p 57 19 LEVEL key Used to set the switching level to a current or conductance value p 36 key Used to set the switching level to a percentage 20 FREQ DUTY key Used to set the switching frequency and duty ratio p 37 Th TL key Used to set the switching time 21 SWON key Turns the switching function on and off p 37 22 LOAD key Turns the load on and off p 27 23 MODE key Switches the operation mode p 29 CV key Adds CV mo
2. Operating range H range OAto 50A 0Ato 100A M range OAto5A OAto10A L range 0 A to 500 mA OAto1A Setting range H range 0 A to 52 5 A OAto105A M range 0 A to 5 25 A OAto10 5A L range 0 A to 525 mA O Ato 1 05 A Resolution H range 2 mA 5 mA M range 0 2 mA 0 5 mA L range 0 02 mA 0 05 mA Accuracy of setting 0 2 of set 0 1 of f s1 Vin 150 kQ Input voltage variation 0 1 of set 0 02 of f s Ripple rms4 4mA 8 mA p p 40 mA 80 mA 1 The full scale of the range However for the M range it is the full scale of the H range 2 Vin The voltage at the load input or sensing terminals 3 When the input voltage is changed from 0 3 V to 30 V at a current equal to the rated power 30 V 4 Measurement frequency bandwidth 10 Hz to 1 MHz 5 Measurement frequency bandwidth 10 Hz to 20 MHz Specifications Constant resistance CR mode Constant voltage CV mode Operating range H range 165 S to 3 mS 330 S to 6 mS 6 06 mQ to 333 Q 3 03 mQ to 166 7 Q M range 16 5 S to 300 uS 33 3 S to 600 uS 60 6 mQ to 3 33 kQ 30 3 mQ to 1 667 KQ L range 1 65 S to 30 uS 3 3 S to 60 0 uS 606 mQ to 33 3 KQ 303 mQ to 16 67 KQ Setting range H range 173 25St00S 346 5 S to 0 S 5 77 mQ to OPEN 2 886 mQ to OPEN M range 17 325 Sto0 S 34 65 S to 0 S 57 7 mQ to OPEN 28 86 mQ to OPEN L range 1 7325 Sto0S 3 465 Sto0S 577 mQ to OPEN 288 6 mQ to OPEN Resolution H range 3 mS 6 mS
3. PLZ 4WL A eocooe Specifications General specifications PLZ 4WL Input voltage range 100 Vac to 240 Vac 90 Vac to 250 Vac single phase continuous Input frequency range 47 Hz to 63 Hz Power consumption 95 VA max Inrush current 65 Amax Operating temperature range 0 C to 40 C 32 F to 104 F Operating humidity range Storage temperature range 20 rh to 85 rh no condensation 20 C to 70 C 4 F to 158 F Storage humidity range 90 rh or less no condensation Isolation voltage 500 V Insulation Primary to input terminal 500 Vdc 30 MQ or more ambient humidity of 70 rh or less resistance Primary to chassis 500 Vdc 30 MQ or more ambient humidity of 70 rh or less Withstand Primary to input terminal No abnormalities at 1500 Vac for 1 minute voltage Primary to chassis No abnormalities at 1500 Vac for 1 minute Dimensions mm See the outline drawing Weight Approx 6 5 kg 14 3 Ib Approx 8 kg 17 6 Ib Battery backup Backs up setup information Accessories Power cord 1 pc with plug length 2 4 m Load input terminal cover 1 pe Set of screws for the load 2 sets input terminal cover Set of screws for the load A 2 sets input terminal Chassis connection wire 1 pc CD R 1 pc Setup Guide 1 pc Japanese English Quick Reference English 1pc Japanese 1pc Sa
4. LOAD key CV___MENU_VRANGE SHORT _UVP__ STORE ABC O SWON FREQ DUTY LEVEL A B ic SHIFT Q Q Q Th TL So EDIT RUN STOP PAUSE z SWITCHING PRESET SEQ POWER switch jj Check that the POWER switch is turned off O Check that the power cord is correctly connected Check that nothing is connected to the DC INPUT load input terminal on the front panel Turn the POWER switch on oi O amp N Check that the display is in the fundamental setting entry condition The measured value displayed section with mA V and W unit indicates coarse zero The characters SET shown under the measured value is highlighted with an underline You can enter the fundamental setting for the selected operation mode ENE Oo 0 00m 0 000v Constant current CC mode is selected in this screen so you can enter the current which is the fundamental setting 6 Push LOAD Check that the LED above the key illuminates 7 Push LOAD again Check that the LED above the key turns off If an odd sound odd odor fire or smoke occurs around or in the PLZ 4WL remove the power plug from the outlet or turn off the power switch Installation and Preparation 15 Turning the Power On When the PLZ 4WL does not start properly This section introduces what measures you can take when the PLZ 4WL does not start properly If following the remedy shown here does not solve the problem contact your Kikusui a
5. Press ENTER The load turns on automatically and the offset calibration CV 4V Offset Adjustment screen appears se Aalusiment The current calibration value DAC REF 0x0001 hexadecimal o Cursor MON 0x0001 PREV NEXT Indicates that the values are hexadecimal Press 4 or gt to set the cursor position of DAC REF and then turn the rotary knob so that the input voltage is within 0 05 of the value corresponding to 10 of the full scale value see the table of CV mode settings The measured value offset MON is set automatically E Step F Calibrate the offset value for the internal reference voltage for the 9 6 7 protection functions Press ENTER The offset calibration screen CV 4 V Limit Offs Adjust appears Press 4 or gt to set the cursor position of DAC LIM and then turn the rotary knob so that the input voltage is within 0 05 of the value corresponding to 10 of the full scale value see the table of CV mode settings Press ENTER The load turns off automatically E Step G Calibrate the gain values of the internal reference voltage for 8 voltage settings and of the measured values Press ENTER The load turns on automatically and the gain calibration CV 4V Gain Adjustment screen appears Press 4 or gt to set the cursor position of DAC REF and then turn the rotary knob so that the input voltage is within 0 05 of the value corresponding to 100 of the full scale valu
6. PART NO 1B021035 KIKUSUJI s 20 Installation and Preparation Basic Functions Advanced Operations User s Manual Sequences 1 C2 cH External Control o c PLZ 4WL Series Electronic Load PLZ164WL PLZ334WL Maintenance Specifications About Operation Manual This manual is intended for users of the product or persons teaching other users on how to operate the product The manual assumes that the reader has knowledge about electrical safety testing Setup Guide The setup guide is intended for first time users of the PLZ AWL series It gives an overview of the PLZ 4WL series connecting procedures safety precautions etc Please read through and understand this guide before operating the product Quick Reference The quick reference briefly explains the panel description and the basic operation of the PLZ 4WL e User s manual this manual User s manual is intended for first time users of the PLZ AWL series It gives an overview of the PLZ 4WL series and describes various settings measurement procedures maintenance safety precautions etc This manual is designed to be read from beginning to end You can review this manual when you are confused about an operation or when a problem occurs e The communication interface manual The communication interface manual describes the content of the commands The interface Manual is provided on the accompanying CD ROM The interfac
7. Check that the display is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition Turn the rotary knob to set the current The CC mode settings are complete When you press LOAD the LOAD LED lights and the PLZ 4WL starts supplying current You can change the current even when the load is on PLZ 4WL Constant Current Mode CC mode Configuring CC CV mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition PLZ 4WL CC CV mode is constant current mode CC mode with CV mode added to it You can add CV mode even while the load is on LOAD MODE SET VSET RANGE LOAD CV VRANGE SHIFT Configure the constant current settings To configure the settings refer to Configuring CC mode Press CV SHIFT MODE to add CV mode The PLZ 4WL switches to CC CV mode and CC CV appears on the display Make sure that the PLZ 4WL is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition 4 Turn the rotary knob to set the current and voltage The value that you can set current or voltage changes when you press SET VSET The CC CV mode settings are complete Press LOAD to start testing You can change the current and voltage even when the load is on Basic Functions 31 32 Co
8. E Symptom 3 Keys do not work Check Item Location and Status of the Object Check Result Possible Cause Remedy Is key lock mode enabled Yes Key lock is enabled Release the key lock See Locking the Keys on page 41 No Malfunction Immediately stop the use of the instrument and request repairs E Symptom 4 Input current is unstable or oscillates Check Item Location and Status of the Object Check Result Possible Cause Remedy Is rated voltage applied for the input power supply AC No Low supply voltage Use the PLZ 4WL in the input supply voltage range Yes Malfunction Immediately stop the use of the instrument and request repairs Is the ALARM illuminated Yes An internal or external error Check the alarm type and carry out the occurred on the PLZ 4WL appropriate remedy See Protection Functions on page 49 Is there a large loop in the load Yes gt Twist the wires wire See Load wiring on page 17 The load wire is long Long gt Change the response transient response using menu setup PLZ 4WL Maintenance 105 Troubleshooting E Symptom 5 ALARM is activated Check Item Location and Status of the Object Check Result Possible Cause Remedy Is the fan stopped Yes Overheat protection tripped Immediately stop the use of the instrument and request repairs Is t
9. The sequence function automatically executes instructions specified in advance one operation at a time A variety of waveform simulations can be executed through the specification of a sequence of operations steps The sequence that you create is saved by the backup function even when the power is turned off Normal sequences and fast sequences The sequence function enables you to use two types of sequences normal sequences and fast sequences E Normal sequences For normal sequences an execution time is assigned to each step Up to 10 programs can be saved and the maximum number of steps that can be contained in all programs combined is 256 steps You can include commands to unpause the PLZ 4WL after it has been paused through the pressing of PAUSE or through an external trigger signal Input current 100s 150s 80s Time Ramp Step Ramp RAMP ON RAMP OFF RAMP ON 7A 7A 0 5A E Fast sequences For fast sequences the execution time of each step is determined by the TIME BASE execution interval setting Each step has the same interval The maximum number of steps is 1024 The high time resolution enables you to create high speed simulations You can save one fast sequence program gt Execution RUN TIME BASE execution interval Trigger output 10A 5 E 2S Sa a aaa ie STEP 1 2 3 4 5 6 7 8 9 10 PLZ 4WL Common Sequence Editing Operations PLZ 4WL This sectio
10. Vm Rated voltage Input voltage Vo 10 V External voltage Ein J1 yos Ee EXT CONT CV 3o lt 5 Approx 10 KQ te Vo Input voltage ACOM k In vm Rated voltage Twist Ein External voltage 0sEins10V To avoid noise interference use a highly stable low noise external voltage source and twisted signal wires 1 Turn the POWER switch off Connect the external voltage across pins 5 and 6 of the J1 connector Turn the POWER switch on and make sure that the load is off Set the operation mode and the current range If you also want to control the current range externally be sure to set the range to H From the menu select 2 Configuration gt 3 External gt Control CV gt ON Doing so enables the external control of CV mode O1 A G RO See p 54 Turn the power switch off and then on again The menu settings are applied PLZ 4WL External Control o 88 Superimposing Constant Current Mode CC Mode Z CAUTION EXT CONT ADD You can superimpose current on the CC mode panel remote settings by applying an external voltage of 10 V to 10 V to the PLZ 4WL When the panel and remote control current setting is 0 A an external voltage of 0 V results in an input current of 0 A and an external voltage of 10 V results in an input current of 100 of the specified range When the panel and remote control current setting is greater than 0 A and a positive external vol
11. 0 1 V i 0 Logarithmic 0 1 A 0 55 A 5A maa Input current A Input current A Input voltage V Operating area where specifications are guaranteed a o 0 3 V i Actual operating area 3 3V Operating area where L range specifications are guaranteed 0 3V Actual operating area 50 mV i 20 mV 0 1 V i 0 Logarithmic A 0 055 A 0 5A 0 0 5A scale Input current A Input current A PLZ 4WL Operating Area Operating areas of the PLZ334WL Input voltage V Input voltage V Operating area where specifications are guaranteed 30 VE o oo 0 3 V 2 o y Actual operating area Operating afea where H range 3 3 Vi specifications are guaranteed 0 3 V i Actual operating area eal overt 50 mV 20 mV 0 1V 0 Logarithmic 0 1 A 11A 100A 0 100A scale Input current A Input current A Input voltage V Input voltage V Operating area where 30V specifications are guaranteed 0 3 V i Actual operating area Operating area where 3 3 Vp ee erate eee M range specifications are guaranteed 0 3V 50 mV 20 mV 0 1V i 0 Logarithmic 0 1 A 1 1A 10A scale Input current A Input current A Input voltage V Input voltage V Operating area where a specifications are guaranteed 0 3 V Actual operating area 3 3 V L range 0 3 V 50 mV 20 mV 0 1V i 0 Logarithmic 0 A 0 11A 1A scale Input current A Input current A PLZ 4WL 131 132 B Sequence Progra
12. you set the current A You can also add constant voltage mode CV mode to constant current mode CC mode Configuring CC mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition Select the operation mode and set the current 6 LOAD MODE RANGE LOAD QO Make sure that the load is off The load is off when the LED to the upper left of the LOAD key is off If the LED is lit press LOAD to turn the load off Press MODE to select the operation mode CC The operation mode popup menu appears Press MODE repetitively until CC is highlighted on the menu After you select the operation mode the popup menu disappears and CC appears on the display Press RANGE to select the current range The current range popup menu appears Each time you press RANGE the range switches between L M and H Press RANGE until the range that you want to select is highlighted After you select a range the popup menu disappears and the range that you selected appears along with its full scale value The full scale value varies depending on the model Press VRANGE SHIFT RANGE to select the voltage range The voltage range popup menu appears Each time you press VRANGE SHIFT RANGE the voltage range switches between 4 V and 30 V Press VRANGE SHIFT RANGE until the range that you want to select is highlighted After you select a voltage range it appears on the display
13. M range 300 pS 600 uS L range 30 pS 60 uS Accuracy of setting 0 5 of set 0 5 of f s Vin 150 kQ 1 Conductance S Input current A input voltage V 1 resistance Q 2 Converted value based on the input current at the sensing point 3 set Vin Rset 4 The full scale of the range However for the M range it is the full scale of the H range 5 Vin The voltage at the load input or sensing terminals PLZ 4WL Operating range H range 0 3 V to 30 V L range 0 3Vto4V Setting range H range 0V to 31 5 V L range OVto4 2V Resolution H range 2 mV L range 200 uV Accuracy of setting 0 1 of set 0 1 of f s Input current variation 12 mV 1 At the sensing point during remote sensing when the input voltage is within the operating range 2 At an input voltage of 0 3 V when the current changes from 10 to 100 of the rating during remote sensing x Specifications 109 Specifications Constant CP power mode Operating range H range 16 5 W to 165 W 33 W to 330 W M range 1 65 W to 16 5 W 3 3 W to 33 W L range 0 165 W to 1 65 W 0 33 W to 3 3 W Setting range H range 0 W to 173 25 W 0 W to 346 5 W M range 0 W to 17 325 W 0 W to 34 65 W L range 0 W to 1 7325 W 0 W to 3 465 W Resolution H range 10 mW 20 mW M range 1 mW 2 mW L range 0 1 mW 0 2 mW Accuracy of setting 2 5 of f s 1 The full sca
14. and set the number of the program to execute next to 2 To execute program 2 next select 2 Press NEXT SHIFT p gt or ENTER The step value screen appears Before you set the steps for program 1 you can also configure program 2 Sequences A 65 66 Sequence Example Normal Sequence Setting the steps of program 1 Memo You can move the cursor by pressing amp and W Press PREV SHIFT q to return to the previous screen Press DEL SHIFT W to delete a step Memo You can move the cursor by pressing A V lt 4 and gt Press PREV SHIFT q to return to the previous screen Set the current execution time and execution pattern of each step in program 1 The various items are set on separate screens In this example the settings will be configured in the following order current setting execution time and then execution pattern Setting the current CC SET A END prev TOTAL 000 CC SET A M 7 0004 END prev TOTAL 001 CC SET A 001 7 000 MA 7 0004 END prev TOTAL 002 NEXT NEXT NEXT oo or A GW N Press INS SHIFT A Step 001 is inserted into the line with the highlighted dashes Set the current for step 1 to 7 A Turn the rotary knob to select 7 000 A Press w to highlight the dashes and then press INS SHIFT 4 Step 002 is inserted Set the current for step 2 to 7 A Turn the rotary knob to select 7 000 A Set the current for s
15. 0 164A DATA2 1 164A START 0016 STOP 0100 ENTER Steps 101 to 200 DATA1 0 1644 DATA2 1 1644 START 0101 STOP 0200 ENTER 0 164 A DATA1 100 101 200 START STOP START STOP Step 16 73 74 Sequence Example Fast Sequence This section explains how to use the operation panel to enter the following example sequence This section provides an example of how to execute a sequence on the PLZ164WL that will simulate the waveform shown in the figure below e Program 11 Memo PROGRAM 11 Mode CC Loop 3 State that the load will be in after the sequence ends On Current at the end of the sequence 1 A Last step number 15 Step execution time 1 ms Step Setting Trigger Output Steps 1 to 5 10A Off Step 6 5A On Steps 7 to 10 10A Off Step 11 5A Off Steps 12 to 15 10A Off When you execute the sequence program 11 will be repeated three times point A to B point B to C point C to D After program 11 has been executed 3 times it will finish and the current will change to 1 A point E Execution RUN 1ms execution interval Trigger output 10A 5A Input current STEP 1 8 9 10 Program 11 Magnified Execution RUN Trigger output 10A ol a Input current gt STEP PLZ 4WL Sequence Example Fast Sequence Editing program 11 Memo You can move the cur
16. 5 A All the settings for program 2 have been entered Press PREV SHIFT twice to display the sequence editing screen O 0O NO OFF GP 0 Set the currents for steps 12 to 15 to 10 A Each time you press PREV SHIFT lt the previous screen is displayed Keep pressing PREV SHIFT lt q until the screen that was displayed before you started sequence editing appears PLZ 4WL Oe Executing Pausing and Stopping Sequences After you have finished configuring the sequence execute it Executing sequences SEL PROG NO PROG No 1 Program cc No 1 Program1 1 Make sure that the switching and short functions are off Make sure that the SW ON key light is off and that the short icon is not displayed Even if the light is on when you enter the sequence execution screen the switching and short functions will be turned off automatically Press RUN STOP SHIFT B or PAUSE SHIFT C to display the Jr Memo sequence execution screen Press PREV SHIFT to return to the previous screen Turn the rotary knob to select the number of the program that you want to execute To execute a normal sequence select a program number from 1 to 10 To execute a fast sequence select program number 11 4 Press RUN STOP SHIFT B to execute the selected sequence The sequence will be executed and the measured values will appear on the display When the sequence is completed a popup window appears on the screen 5 Pres
17. At this point one of two types of operations occurs depending on the protection action setting for OPP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4W sinks current as a constant power load at point B Even if you attempt to increase the input current the current will not increase beyond point B If you decrease the input current overpower protection OPP is cleared The PLZ 4WL returns to constant current CC mode and the operating point moves along segment AB The load is turned off no current flows LOAD DEE The PLZ 4WL stops operating as a load Point B The PLZ 4WL switches out of constant current CC mode LIMIT Overpower protection OPP continues and the PLZ 4WL operates as a constant power load PLZ 4WL eoooe e 120 e Operating Area E Operation on segment CD If the voltage of the constant voltage power supply is set to V2 and the input current load current of the PLZ 4WL is increased the operating point moves along segment CD Point D is the maximum current in the range being used How constant resistance CR mode works In constant resistance CR mode the PLZ 4WL sinks current in proportion to the voltage variation Constant resistance mode operation When the PLZ 4WL is used in constant resistance CR mode it operates as a resistive load as shown in the figure below When the voltage V1 of
18. Current Percentage Calibrated Items Sey 19 full Internal reference voltage Measured Values Internal Reference Voltage for Seale for current settings the Protection Function Settings Offset Gain Offset Gain Offset Gain Low 10 Step A Step A Step B 100 Step C Step C Step D Mid 10 Step A Step A Step B 100 Step C Step C Step D High 10 Step A Step A Step B 100 Step C Step C Step D E CC mode settings The current settings for each model are listed below i Current to Be Matched Calibration Number and Item Ouvi Saing ci the Power Supply PLZ164WL PLZ334WL cane Offset 50 mA 0 05 mA 100 mA 0 1 mA OW Gain prea 500 mA 0 5mA TAIMA Offset 500 mA 0 5 mA 1A 1mA 2 CC Mid Gain Current 5 A 0 005 A 10 A 0 01 A Off RAGA eves 5A 0 005A 10A40 01A 3 CC High set the load device ai Ma Gain 50 A 0 05 A 100A 0 1A Calibrating the low range E Step A Calibrate the offset values of the internal reference voltage for Oo orf N current settings and of the measured values Connect a shunt resistor that matches the value corresponding to 10 of the maximum low range value Press MENU SHIFT SET VSET The menu screen appears Use to select 3 Calibration and then press ENTER Use w and A to select 1 CC Low Connect a constant voltage power supply to the load input terminals and app
19. High range CV Mode Calibration Calibration numbers 4 and 5 Perform calibration on the Low range and then on the High range For each item start calibration at step E The shunt resistor will not be used but you can leave it connected Voltage Percentage Calibrated Items Rangs ai ae Ful Internal Reference Measured Values Internal Reference Scale Voltage for Voltage Voltage for the Settings Protection Function Settings Offset Gain Offset Gain Offset Gain L 10 Step E Step E Step F ow 100 Step G Step G Step H flag 10 Step E Step E Step F I 3 100 Step G Step G Step H E CV mode settings The current settings for each model are listed below Gere Output Setting of Voltage to Be Calibration Number and Item the Power Supply Matched Offset 0 4V 40 2 mV 4 cv av Voltage 4 5 V Gain Current 0 5 A AV t2mV Offset 3V 1 5 mV 5 CV 30V Voltage 31 V Gain Current 0 5 A 30V 15 mV Calibrating the low range Monitor the input voltage using an external voltmeter E Step E Calibrate the offset values of the internal reference voltage for voltage settings and the measured values 1 Use w and A to select 4 CV 4V Connect a CC power supply to the load input terminals and supply 0 5 A Set the power supply voltage to 4 5 V or greater e 102 PLZ 4WL o CV Mode Calibration Calibration numbers 4 and 5 PLZ 4WL
20. Operating Area PLZ 4WL The load is turned off no current flows EOAD OFF The PLZ 4WL stops operating as a load Point B The PLZ 4WL switches out of constant power CP mode LIMIT Overcurrent protection OCP continues and the PLZ 4WL operates as a constant current load E Operation on segment GH If the voltage of the constant voltage power supply is set to V3 and the power of the PLZ 4WL is increased P1 gt P2 gt PB thereby increasing the input current load current the operating point moves along segment GH Point G is the maximum power in the range being used 123 Operating Area How constant voltage CV mode works In CV mode the PLZ 4WL sinks current so that the voltage at the load input end of the PLZ 4WL is constant Constant voltage mode operation When the PLZ 4WL is used in constant voltage CV mode it operates as a constant voltage load shunt regulator as shown in the figure below When V1 is greater than V the input voltage V is kept constant even when the input current varies Current does not flow when V1 is less than or equal to V In the figure below R1 is the internal resistance of the constant voltage power supply The PLZ 4WL may operate unstably if R1 is low The voltage is constant even i when the current varies e 9 V lt V1 Constant voltage gt power supply Vv a PLZ 4WL Series 0 Current Transition of the operating p
21. PLZ 4WL overhauled after about 10 000 hours of operation An overhaul includes internal inspection and cleaning To have the PLZ 4WL overhauled please contact a Kikusui distributor or agent Backup battery replacement The PLZ 4WL has a battery inside The battery s service life differs depending on the environment that the PLZ 4WL is used in but three years after it is purchased is a rough estimate for the battery s service life If the panel settings are not retained after the power switch is turned off and on the battery has worn out For information about replacing the battery contact your Kikusui agent or distributor PLZ 4WL Maintenance 97 98 Calibration The PLZ 4WL is calibrated properly when it is shipped but we recommend that you calibrate it regularly to keep it operating at top performance What gets calibrated The current and voltage values are calibrated The current values are calibrated for each of the three current ranges L M and H The voltage values are calibrated for each of the two voltage ranges 4 V and 30 V The offset and gain values for all the ranges indicated above are calibrated Offset value 10 of the full scale value Gain value 100 of the full scale value During operation the relationship between the current setting and the actual current and the relationship between the voltage setting and the actual voltage are linear Therefore a straight line is defined by the calibrated
22. PREV SHIFT the previous screen is displayed Keep pressing PREV SHIFT lt until the screen that was displayed before you started sequence editing appears Sequences A 69 70 How Fast Sequences Work See p 74 The operation modes that you can execute fast sequences in are constant current CC mode and constant resistance CR mode Just like normal sequences fast sequences are composed of two elements programs and steps Programs are groups of executable units called steps When program 11 is executed its steps are executed in order starting with step 0001 A single execution of a program is completed after the program s last step has been executed Step 0001 Step 0002 Program 11 Step 0003 Step 1024 The maximum number of steps is 1024 First configure the program settings and then configure the step settings The details of the method for configuring a fast sequence are explained in Sequence Example Fast Sequence PLZ 4WL ee Editing a Fast Sequence Program PLZ 4WL To configure a fast sequence program you first need to set the operation mode to CC mode or CR mode The program is executed the specified number of times Unlike with normal sequences you cannot chain programs to be executed after the first program You can save one program No 11 Press EDIT SHIFT A to display a screen for configuring the sequence s program operation In the top screen if you press
23. You can press ENTER when an alarm is activated to clear the alarm However the alarm will be activated again if its cause has not been eliminated When alarm input is being detected release the alarm of the PLZ 4WL after you release the alarm of the device connected to external control PLZ 4WL Advanced Operations 52 Response Speed I p 54 The PLZ 4WL operates by detecting the input current or voltage and controlling it through negative feedback You can ensure stable operation by reducing the response speed The response speed can be specified in CV mode and CR mode The response speed is set to normal by factory default To set the response speed of negative feedback in CV mode FAST or Normal from the menu select 1 Setup gt 5 Response gt CV Response To set the response speed of negative feedback in CR mode FAST or Normal from the menu select 1 Setup gt 5 Response gt CR Response PLZ 4WL Elapsed Time Display and Auto Load Off Timer Two convenient functions are available for the discharge tests of batteries e You can measure the time from the start of discharge to the cutoff voltage e You can measure the closed circuit voltage after a specified time has elapsed since the start of discharge voltage measurement Voltage V2 Voltage after the specified time elapses V1 UVP activation voltage Tcount Elapsed time dis
24. a trigger signal when the step is executed Step n Step n 1 Example Set trigger output at step number n TRIG OUT If RIGON E PAUSE Use this setting to specify whether or not to pause the program If you set PAUSE to ON the sequence is paused after the step is executed To unpause the sequence press PAUSE SHIFT C on the front panel or apply a trigger signal to the TRIG INPUT pin pin 13 of the J1 connector See p 91 Example Pause and resume using the Example Pause by executing PAUSE SHIFT C key PAUSE in a program and resume using trigger input fees TRIG IN a Program in Program execution Program execution execution Paused resumed Paused resumed _ ee 6s Aa e a __ at step n PAUSE PAUSE PAUSE ON ig PAUSE key PAUSE key Trigger signal input SHIFT C SHIFT C TRIG IN Deleting steps Press W and A to highlight the step that you want to delete and then press DEL SHIFT W The highlighted step is deleted PLZ 4WL Sequences A 64 Sequence Example Normal Sequence Input current This section explains how to use the operation panel to enter the following example sequence This section provides an example of how to execute a sequence with two programs on the PLZ164WL e Program 1 Memo PROGRAM1 Mode CC Loop 1 Chain Program 2 Step Setting Step Execution Time LOAD RAMP TRIG Step 1 7A 200 s 3 min 20 s On On Off Step 2 7A 150 s 2 min 30 s On Off Off Step 3 0 5
25. a value and turning it counterclockwise decreases the value 0 000v Fine adjustment E Coarse and fine adjustment You can switch between coarse and fine adjustment by pressing the rotary knob When the down arrow shown at the upper right corner of the screen is large coarse adjustment is Os Smallarrow Selected when it is small fine adjustment is selected 0 000v The fine adjustment setting resolution is ten times that of coarse adjustment During coarse adjustment you can make even more coarse adjustments by holding LOCAL while you turn the rotary knob When you set a value it is convenient to first use coarse adjustment to set the value roughly and then to switch to fine adjustment to set it precisely NOTE Popup menu operation Oe Some keys show a popup menu when you press them If you press the key again while the 0 000v menu is shown the selected item changes The selected item changes to the next lowest item each time you press the key When you finish the key operation the item at that point is selected and the popup menu is cleared automatically Popup menu How to use the SHIFT key The SHIFT key switches the function of each key If you press a key without holding down SHIFT the function indicated above the key is enabled if you press a key while holding down SHIFT the function indicated below the key is enabled For example if you press SET VSET without holding down SHIFT the SET VSET indicat
26. action is set to LIMIT the PLZ 4W sinks current as a constant power load at point B Even if you attempt to decrease the resistance to increase the current the current will not increase beyond point B If you increase the resistance to decrease the input current overpower protection OPP is cleared The PLZ 4WL returns to constant resistance CR mode and the operating point moves along segment AB The load is turned off no current flows LOAD OEF The PLZ 4WL stops operating as a load Point B The PLZ 4WL switches out of constant resistance CR mode LIMIT Overpower protection OPP continues and the PLZ 4WL operates as a constant power load Transition of the operating point overcurrent protection OCP Operating area Constant current line OCP setting gt OCP activation point 0 D S gt 5 a Constant resistance line constant resistance settings R1 R2 and RF Logarithmic scale IOCP B Input current A If the overcurrent protection OCP setting IOCP is less than the current value IB at point B when the PLZ 4WL resistance is decreased R1 gt R2 gt RF so that the input current load current increases with the voltage of the constant voltage power supply at V1 the operating point moves along segment AF A1 A2 gt F When point F is reached overcurrent protection OCP is activated At this point one of two types of operations occurs depending on the protection action
27. cables be sure to use a special tool For a description of applicable cables and tools see the catalog of the relevant connector manufacturer An optional OPO1 PLZ 4WL External Control Connector Kit is available for making the p 134 ALR ar 9 BZ Ge PLZ 4WL External Control a 81 82 External Control J1 connector pin arrangement External control connector J1 connector pin number 1 Ji icc 2 Pin Signal Name Description No 1 EXT CONT MODE For controlling CC CR and CP mode through external voltage 0 V to 10 V correspond to 0 to 100 of the rated current CC mode or rated power CP mode In CR mode external input voltages in the range of 0 V to 10 V correspond to the range of resistances from the maximum resistance to the minimum resistance A COM Connected to the negative load input terminal 3 EXT CONT ADD For controlling CC mode through external voltage External input voltages in the range of 10 V to 10 V correspond to the range of currents from 0 of the rated current to 100 of the rated current The value is superimposed to the panel and remote control setting A COM Connected to the negative load input terminal 5 EXT CONT CV For controlling CV mode through external voltage External input voltages in the range of 0 V to 10 V correspond to the range of voltages from 0 of the rated voltage to 100 of the rated v
28. comes standard with GPIB RS232C and USB communication functions it can be easily incorporated into a wide range of test and inspection systems PLZ 4WL Series Models Model Maximum Operating Power Operating Current Voltage PLZ164WL 50A 0 3Vto30V 165 W PLZ334WL 100A 0 3Vto30V 330W Features In addition to the high performance constant current constant resistance constant voltage and constant power modes the PLZ 4WL Series Electronic Load offers a wide variety of other features High speed slew rate of 50 A s PLZ334WL The rise and fall slew rate of the current when the PLZ 4WL switches at 2 to 100 20 to 100 in M range of the rated current in constant current mode is 50 A us PLZ334WL which corresponds to fast rise and fall times of 1 6 us for all types This allows you to conduct accurate transient response tests of DC power supplies and to accurately generate simulated waveforms for use as dummy loads Variable slew rate In constant current mode the PLZ 4WL allows configuration using slew rates A us This allows you to optimize the voltage drop caused by the wire inductance that occurs when a load is switched or to optimize the transient control of the equipment under test such as a constant voltage power supply Higher precision Higher precision is offered for current settings High resolution for minute current settings is provided using a 3 range configuration 0 02 mA resolution is
29. constant resistance CR mode and the operating point moves along segment MT The load is turned off no current flows Pen Sre The PLZ 4WL stops operating as a load Point T The PLZ 4WL switches out of constant resistance CR mode LIMIT Overcurrent protection OCP continues and the PLZ 4WL operates as a constant current load If the overcurrent protection OCP setting is IOCP1 because overcurrent protection OCP is not activated as resistance is reduced so that the current is increased the operating point reaches point S At point S the PLZ 4WL switches to constant voltage CV mode The voltage is fixed at the user specified voltage VQ The operating point moves along segment QS The current is determined by the voltage and internal resistance of the battery 129 Operating Area Operating areas of each model Operating areas of the PLZ164WL Input voltage V Input voltage V Operating area where specifications are guaranteed 30 V 0 3V Actual operating area Operating atea where 3 3 VE ee H range specifications are guaranteed 0 3 V 50 mV 20 mV 0 1V 0 Logarithmic0 1 A 5 5A 50A 0 50A scale Input current A Input current A Input voltage V Input voltage V Operating area where specifications are guaranteed 30V 0 3 V l Actual operating area Operating area where 3 3 V E e M range specifications are guaranteed 0 3 V Actual operating area 50 mV i 20 mV
30. control logic setting for HIGH Turned on by a high level turning the load on and off 4 Remote Sensing Sensing OFF ON Remote sensing function 3 Calibration 1 CC Low Calibration of the PLZ 4WL 2 CC Mid For details see Calibration on page 98 3 CC High 4 CV 4V 5 CV 30V 4 Model Info2 MODEL PLZxxxWL Model name VERSION SUB X XX Firmware version VERSION MAIN X XX ROM version 1 The Configuration conditions except for remote sensing are enabled after the power switch is turned off and then on again 2 Information about the PLZ 4WL It cannot be changed PLZ 4WL Advanced Operations 55 56 Factory Default Settings Initialization The PLZ 4WL s backup function saves the current settings menu settings and memory entries ABC and preset even after the power switch is turned off You can initialize the PLZ 4WL to set all of its settings to their factory defaults 1 Turn the POWER switch off O 2 Make sure that nothing is connected to the DC INPUT terminals the load input terminals on the front panel 3 While holding down ENTER turn the POWER switch on l Keep holding ENTER until the display lights up and SET CLR appears The PLZ 4WL will start up with the factory default settings PLZ164WL SET CLR VERSION is displayed SUB 1 00 MAIN 1 02 Example for the PLZ164WL PLZ 4WL Sequences This chapter explains the sequence function 58 Sequence Function
31. dust filter is installed on the inside of the louver on the front panel Periodically clean the filter to prevent clogging Z CAUTION A clogged filter hinders the cooling of the inside of the PLZ 4WL can cause malfunctions and can shorten the PLZ 4WL s service life e When the PLZ 4WL is in operation air is sucked through the dust filter to cool the inside of the device If moisture is present in the dust filter the temperature or humidity inside the PLZ 4WL increases and may cause malfunctions 1 Use both hands to grab the four edges of the louver 2 While pulling the bottom slat towards you slide the top of the louver down and remove the louver from the panel Slot 3 Remove the dust filter from the inside of the louver and clean it Use a vacuum cleaner to dispose of the dust and foreign particles that are attached to the dust filter If the filter is extremely dirty clean it using a water diluted neutral detergent and dry it completely 4 Attach the louver so that its tabs enter the slots in the panel While pushing on the second slat from the bottom of the louver slide the louver up to attach it to the PLZ 4WL Fix the pin inside the louver into place 96 PLZ 4WL Inspection Internal inspection The PLZ 4WL s electrolytic capacitor fan motor and backup memory battery will wear out over time The exact timing varies depending on how the PLZ 4WL is used but we recommend that you have the
32. e Constant resistance mode CR mode e Constant power mode CP mode e Constant voltage mode CV mode e Constant current and constant voltage mode CC CV mode e Constant resistance and constant voltage mode CR CV mode PLZ 4WL Operating Area How constant current CC mode works In constant current CC mode the PLZ 4WL maintains the same current even if the voltage changes Constant current mode operation When the PLZ 4WL is used in constant current CC mode it operates as a constant current load as shown in the figure below The PLZ 4WL sinks the specified current I regardless of the output voltage V1 of the constant voltage power supply M1 Constant voltage 7 i D power supply y The current is constant even when the voltage varies PLZ 4WL Serie 0 Current CC setting Transition of the operating point overpower protection OPP In this example we will assume that the PLZ 4WL is being used in constant current CC mode to test the load characteristic of a constant voltage power supply Constant power line OPP setting Operating area OPP activation point Input voltage V E ithmi l lle Input current A E Operation on segment AB If the voltage of the constant voltage power supply is set to V1 and the input current load current of the PLZ 4WL is increased the operating point moves along segment AB When point B is reached overpower protection OPP is activated
33. input voltage exceeds the minimum operating voltage and a current greater than or equal to 0 2 of the range rating greater than or equal to 0 2 of the H range when the PLZ 4WL is set using the M range starts flowing the current can keep flowing even when the voltage is reduced down to as low as approximately 20 mV Example for the PLZ164WL Input voltage 30V pentane specifications are om guaranteed E 0 3 V Actual operating area i 0 1 V Logarithmic 0 1A 5 5A 50A ane Input current Input voltage Operating area where specifications are guaranteed 0 3V Actual operating area 0 50 A Input current PLZ 4WL Contents PLZ 4WL About Operation Manual 2 Notations used in this manual 3 Product Overview 3 What Is an Electronic Load 4 Installation and Preparation Checking the Package Contents 12 Attachment to the rack mount frame 13 Connecting the Power Cord 14 Turning the Power On 15 Turning the POWER switch on 15 When the PLZ 4WL does not start properly 16 Checking the version 16 Turning the POWER switch Off 16 Load wiring 17 Methods for Ensuring Stable Operation 18 Reducing the load wiring inductance 18 Optimizing the response speed 19 Do not apply excessive voltages to the load input terminals 20 Match the polarities of the load input terminals and the DUT terminals 20 Connecting to the Load Input Terminals 27 Remote Sensing 24 Basic Functions Panel Operat
34. mount frame kind of parts are needed want to use the PLZ 4WL in CC mode Constant Current Mode CC mode want to use the PLZ 4WL in CR mode Constant Resistance Mode CR want to add CV mode to CC mode Configuring CC CV mode How do set the protection functions to Protection Functions prevent damage to the DUT How do use remote sensing to stabilize the Remote Sensing PLZ 4WL How do check the menu contents gt Menu p Operation How do I reset the PLZ 4WL to its factory Factory Default Settings Initialization p default settings How do operate the PLZ 4WL at a ABC Preset Memory specified current How do save current values to the preset memory How do edit sequence programs Sequences How do control the PLZ 4WL using External Control external voltage How do stop a sequence that is being Executing Pausing and Stopping executed Sequences Maintenance How do use an external contact to turn the Turning the Load On and Off through load on and off External Control want to know about the backup battery s Backup battery replacement replacement period How should clean the PLZ 4WL Cleaning the dust filter How do calibrate the PLZ 4WL Calibration To solve problem See Troubleshooting on page 105 PLZ 4WL S Front Panel i 30 31 32 R E E F samen ETE Vr 33 C
35. on the front panel produces a trigger signal when the step is executed Step n Step n 1 Example Set trigger output at step number n TRIG OUT If Sas PLZ 4WL Editing Steps in a Fast Sequence Increasing the magnification in the step setting monitor screen You can increase the magnification that the steps are monitored at Press W to move the cursor to the magnification and use the rotary knob to change the magnification There are eight magnifications from M1 to M8 The numbers indicate the number of steps that are displayed on a single screen M1 is the maximum magnification When you move the cursor to the step number by pressing A and then change the step using the rotary knob the waveform moves so that the selected step is in the center of the rectangular monitor area When the magnification is set to M1 you can use the rotary knob to move one step at a time and monitor the steps in detail In the same way when the magnification is M2 you can move by two steps at a time when the magnification is M3 you can move by three steps at a time and when the magnification is M8 you can move by eight steps at a time You can monitor all the steps up to the specified last step Press PREV SHIFT to return to the previous screen FILL function You can use the FILL function to automatically set the currents of a group of steps by setting the currents of the step on each end of the group Sequences A In the moni
36. power Undervoltage A specified minimum voltage value undervoltage Load off protection UVP protection activation value Reverse connection A reverse voltage at the load input terminals Load off protection REV Overheat protection An internal power unit temperature that exceeds Load off OHP the defined limit Alarm input An L level CMOS signal received by the ALARM Load off protection INPUT pin pin 12 of the J1 connector 1 if you choose to limit the current the current is limited so that the protection function activation value is not exceeded Current limiting stops after the alarm is released 2 UVP can be disabled 3 When a reverse voltage is detected turn off the DUT immediately 4 If OHP is activated check to make sure that the front panel inlet and the rear panel outlet are not blocked 5 Release the alarm of the PLZ 4WL after you release the alarm of the device connected to external control ce e e 49 50 Protection Functions When the remote sensing function is being used The sensing point of the remote sensing function is the other end of the wire connected to the remote sensing terminal on the PLZ 4WL front panel Connect the end of this wire to the output of the DUT that you want to sense Measurements are made at the sensing point for determining the protection activation values of overvoltage protection OVP overpower protection OPP and undervoltage protection UVP CAUTION If a wire i
37. the constant voltage power supply varies the PLZ 4WL sinks current to maintain V R with the specified resistance R fixed This mode cannot be used with an AC circuit The resistance R is constant even when the voltage and current vary I ror Voltage gt i M 7 V v1 i Va Constant voltage power supply vii Vi PLZ 4WL Series Current Transition of the operating point overpower protection OPP In this example we will assume that the PLZ 4WL is being used in constant resistance CR mode to test the load characteristic of a constant voltage power supply Operating area Constant power line c OPP settin S g ea OPP activation point g gt 5 Q Constant resistance line constant resistance settings R1 R2 and RB Logarithmic scale IB IOCP Input current A If the overcurrent protection OCP setting IOCP is greater than the current value IB at point B when the PLZ 4WL resistance is decreased R1 gt R2 gt RB so that the input current load current increases with the voltage of the constant voltage power supply at V1 the operating point moves along segment AB A1A2 5B When point B is reached overpower protection OPP is activated At this point one of two types of operations occurs depending on the protection action setting for OPP If the protection action is set to LOAD OFF the load turns off PLZ 4WL Operating Area If the protection
38. the menu screen you can set the PLZ 4WL s operating conditions and configure functions Oo A Menu A onfiguration ls 2 0 3 Calibration 4 Model Info PREV Menu screen item 1 display Make sure that the load is off If the LOAD LED is lit press LOAD to turn the load off Press MENU SHIFT SET VSET The menu screen item 1 appears Use the rotary knob or press w and A to move to the item that you want to configure The currently selected item is highlighted Press ENTER or NEXT SHIFT p The menu screen item 2 appears Repeat step 3 and step 4 to move to the setting that you want to set Turn the rotary knob to set the setting Next set other conditions After you have finished configuring the settings press MENU SHIFT SET VSET The menu screen will close and the settings that you configured will be applied NOTE All the configuration settings except for remote sensing are enabled after you turn the power switch off and then on again PLZ 4WL Menu List of menu items the factory default settings are underlined Item 1 Item 2 Item 3 Settings Description 1 Setup 1 Function Soft Start OFF Disable soft start Soft start time 100us 200us 500us 1ms 2ms 5ms 10ms 20ms Count Time OFF Not displayed Elapsed time display ON Displayed 2 Protect Action OCP LOAD OFF The load is turned off Action to be performed wh
39. this feature is very useful when you want to switch between three different types of output in order E Setup memory You can use setup memory to save all the PLZ 4WL settings You can recall the contents of a memory entry when the load is off Check the contents of the memory entry on the screen and then turn on the load E Differences between preset and setup memory Item Preset Memory Setup Memory Number of memory entries 3 100 Memory number A B or C 0 to 99 Memo Not allowed Allowed up to 15 characters Saved settings Fundamental settings Operation mode current conductance Fundamental settings voltage and power current conductance voltage and power Current and voltage ranges Slew rate Switching level Switching interval Activation points of protection functions ABC preset memory When the load is on Memory entries can be saved Memory entries can be saved but not and recalled recalled When the load is off Memory entries can be saved Memory entries can be saved and and recalled recalled PLZ 4WL ABC Preset Memory You can save preset memory entries to A B or C In A B and C you can save fundamental settings for each range of each operation mode You can save and load preset memory entries regardless of whether the load is on or off The protection function activation values are not saved If the settings that you recall exceed the protection function activation values an alarm
40. to set the range to H From the menu select 2 Configuration gt 3 External gt Control CC CR CP gt ON Doing so enables the external control of CC CR and CP mode 4 Set the operation mode and the current range 6 Turn the power switch off and then on again The menu settings are applied External Control a 85 86 Controlling Constant Power Mode CP Mode Externally CAUTION When you apply an external voltage of 0 V to 10 V to the PLZ 4WL the power varies in accordance with the voltage An external voltage of 0 V results in a power of 0 W An external voltage of 10 V results in a power of 100 of the specified range The precision of the PLZ 4WL cannot be guaranteed for voltages below 0 V or above 10 V Connected pins J1 1 signal J1 2 common To avoid damaging the PLZ 4WL observe the following precautions The maximum voltage that can be applied across pins 1 and 2 of the J1 connector is 11 V Do not apply a voltage that exceeds this value e Pin 2 of the J1 connector is connected the negative load input terminal Make sure that the wire of pin 2 does not touch any of the other pins Pm 5 Pm Rated power Input power Po ow ov 10V External voltage Ein ji Poz PmxEin 7 410 EXT CONT MODE lt 1 0 lt Eins 10V Approx 10 KQ a Po Input power in A COM lt 2 k Pm Rated power 7 Ein External voltag
41. will occur Preset memory C Preset memory B Bie SS cee For example when you save to preset CC mode CR mode memory A in CC CV mode A Curent ences current M range voltage L range c H range H range Ke Preset memory A w M range M range CC mode CR mode D L range H range H range jon M range M range O CP mode CV mode range Lrange p Power Voltage S CP mode CV mo H range TA gt M range L range S M range L range lt L range L range Saved here In CC CV mode memory entries for CC mode and CV mode are used In CR CV mode memory entries for CR mode and CV mode are used Operation Mode Fundamental Settings CC mode Current CR mode Conductance resistance CP mode Power CV mode Voltage CC CV mode Current and voltage CR CV mode Conductance resistance and voltage Saving settings to ABC preset memory 0000 00HOHHHHHHHHHHHHHHHHHOHHHHHHHHHHHHHHHHHHHHHHHHHHHH88HO88O8EEE8 For each range of each operation mode you can save different settings to keys A B and C You can save the settings even when the load is on 1 In the operation mode that you want to create a memory entry for set the range and values 2 Press ABC SHIFT ENTER The A B and C keys start blinking 3 Of A B and C press the key that you want to save the settings to The key that you press lights and the settings are saved to the key that
42. 0 mA us 50 uA ps to 500 mA Us Resolution H range 12 5 mA us 25 mA us the setting ranges 250 mA us to 25 A us 500 mA us to 50 A us are se aoe in 125 pAlus 250 pA us parentheses 2 5 mA us to 250 mA s 5 mA us to 500 mA s M range 1 25 mA us 2 5 mA Us 25 mA us to 2 5 A us 50 mA us to 5 A us 12 5 pA us 25 A s 250 yA us to 25 mA us 500 pA us to 50 mA us L range 125 A s 250 A s 2 5 mA us to 250 mA us 5 mA us to 500 mA us 1 25 A s 2 5 pA us 25 yA us to 2 5 mA us 50 yA us to 5 mA us Accuracy of setting 10 of set 0 8 us 1 Can only be set in constant current mode 2 The time it takes to shift from 10 to 90 when the current is varied from 2 to 100 20 to 100 in the M range of the rated current x Specifications Specifications Soft start Operation mode CC Selectable times OFF 100 us 200 ys 500 us 1 ms 2 ms 5 ms 10 ms or 20 ms Time accuracy 30 of set 10 us 1 The time it takes to shift from 10 to 90 of the rated current Response Response speed NORMAL FAST 1 Can be set in CV mode and CR mode Remote sensing Voltage that can be compensated 3 V for a single line Protection function Overvoltage protection OVP Turns off the load at 115 of the rated voltage Overcurrent protection OCP Can be set to a value from 10 to 110 of the rated current The action can be set to load off or limit Overpower prote
43. 99 Infinite repetition Last Load OFF Load off The state of the load on or off after the sequence ON Load on finishes Last Set 0 to 100 of the range The fundamental setting at the end of the sequence This setting is valid when Chain is set to OFF Chain OFF The sequence ends Specifies the program that will be executed next 1 to 10 Only programs with the same operation mode and range can be executed 61 Editing Steps ina Normal Sequence _ After you finish configuring the program settings press NEXT SHIFT p gt to configure the step settings You can specify one execution condition per step One step corresponds to one executed operation in the executed waveform Adding steps When you press INS SHIFT A a step is inserted above the currently highlighted step Insert the number of steps that you want to execute You can specify up to 256 steps for all of the up to 10 programs in a normal sequence CC SET Al CC SET Al END _ M 7 000A END Press INS SHIFT A prev TOTAL 000 NEXT prev TOTAL 001 NEXT Editing steps After you have added steps press W and A to highlight the step that you want to edit There are three screens for editing steps You can switch between screens by pressing NEXT SHIFT gt and PREV SHIFT lt Step value Step execution time Step execution pattern SEQ EDIT MAM CC SET A himin s ms LOAD RAMP TRIG PAUSE SSR BBE AEE co OOF GFE
44. A 80 s 1 min 20 s Off Off On e Program 2 Memo PROGRAMZ2 Mode CC Loop 2 State that the load will be in after the sequence ends Off Current at the end of the sequence 0 A Chain Off Step Setting Step Execution Time LOAD RAMP TRIG Step 1 10A 200 s 3 min 20 s On On Off Step 2 5A 50s On Off Off Step 3 8A 150 s 2 min 30 s On On Off Program 2 starts after the three steps in program 1 have been executed When the three steps in program 2 have been executed the first execution of program 2 is finished The sequence is complete when the second execution of program 2 is finished gt Execution RUN oA ee E eee E S A ere eer 7A p oW Ge oc eee S eee a oe Step 1 i Step 2 l Step 3 Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 7A i 7A 105A 10A iSAi 8A 410A 5AE OBA 200 s 150s 80s 200 s 50s 150s i 200 s 50s 150s LOAD ON LOADON LOAD LOADON LOAD LOADON LOAD ON LOAD LOAD ON RAMP ON RAMPOFF i OFF RAMPON ON RAMP ON RAMPON ON RAMP ON i RAMP RAMP i RAMP i OFF i i OFF OFF TRIG OFF l TRIG OFF i TRIG TRIG OFF TRIG TRIG OFF i TRIG OFF TRIG TRIG OFF i ON OFF i OFF Program 1 Program 2 Program 2 PLZ 4WL Sequence Example Normal Sequence Editing program 1 Memo You can move the cursor by pressing A V 4 and gt To exit the sequence editing screens press PREV SHIFT lt q PLZ 4WL In this example program 1 will be cre
45. CC mode panel remote setting by applying superimposing in CC mode an external voltage of 10 V to 10 V CC mode 0 V corresponds to 0 of the current setting and 10 V corresponds to 100 of the current setting Current monitor output 10 V for f s H or L range 1 V for f s M range Front Panel BNC Terminal TRIG OUT Trigger output Approx 4 5 V pulse width Approx 2 us output impedance Approx 500 Q Outputs a low level pulse during sequence operation and switching operation MON OUT Current monitor output 1 V for f s H or L range 0 1 V for f s M range Communication Functions GPIB IEEE std 488 1 1987 SH1 AH1 T6 L4 SR1 RL1 PPO DC1 DT1 CO E1 Supports the SCPI and IEEE std 488 2 1992 command set Sets panel functions except for the function of the power switch and reads measured values RS232C D SUB 9 pin connector conforms to EIA 232 D Supports the SCPI and IEEE std 488 2 1992 command set Sets panel functions except for the function of the power switch and reads measured values Baud rate 2400 4800 9600 19200 bps Data length 8 bits Stop bits 1 2 bits Parity bit None Flow control Xon Xoff USB Conforms to the USB 2 0 specifications and the USBTMC USB488 device class specifications Standard Type B socket Sets panel functions except for the function of the power switch and reads measured values Communication speed 12 Mbps Full speed
46. IFT B rotary knob used to start and stop sequence execution Locking and unlocking the keys Key icon ENE e 0 00m 0 000v 0 000w sLEwRaTE 0 01 mA us If you press LOCK SHIFT LOCAL when the key icon is not displayed the keys are locked and the key icon appears When the key icon is displayed if you press and hold LOCK SHIFT LOCAL until the PLZ 4WL produces a beeping sound the keys are unlocked and the key icon disappears By factory default the keys are not locked when you turn the PLZ 4WL on To start the PLZ 4WL with the keys locked from the menu select 2 Configuration gt 1 Power On gt Key Lock gt ON Turn the power switch off and then on again to enable the settings PLZ 4WL Basic Functions 41 42 Oe Switching from Remote Mode to Local Mode Remote icon ENE e p 0 00m 0 000v 0 000w m at mA Us When the PLZ 4WL is in remote mode the remote icon appears on the display To use the front panel to switch the PLZ 4WL back to local mode press LOCAL PLZ 4WL Advanced Operations This chapter explains ABC preset memory setup memory protection functions and the menu 44 Memory Types The PLZ 4WL is equipped with both preset and setup memory E Preset memory You can save fundamental settings current conductance voltage and power that are used often in preset memory Because you can recall saved settings just by pressing a key
47. PLZ 4WL Operating Area The load is turned off no current flows EOAD OFF The PLZ 4WL stops operating as a load Point N The PLZ 4WL switches out of constant voltage CV mode LIMIT Overpower protection OPP continues and the PLZ 4WL operates as a constant power load Transition of the operating point overcurrent protection OCP Operating area Constant current line OCP setting OCP activation point 0 D l gt 1 5 Constant voltage line 2 constant voltage setting val 1 i i i Logarithmic scale locP IN Input current A When the overcurrent protection OCP setting IOCP is less than current IN at point N the voltage of the constant voltage power supply is VM Current will not flow if the PLZ 4WL voltage VMO is greater than VM If the voltage of the PLZ 4WL is decreased so that VMO is less than VM current starts flowing If the voltage is decreased further VM1 gt VM2 gt VL so that the input current load current increases the operating point moves along segment ML M1i M2 gt L When point L is reached overcurrent protection OCP is activated At this point one of two types of operations occurs depending on the protection action setting for OCP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4WL sinks current as a constant current load ca at point L Even if you attempt to decrease t
48. PLZ 4WL 118 operating areas of each model 130 operating humidity range 115 operating temperature range 115 operation modes 29 OPP 50 Oscillation 19 overcurrent protection 50 overhaul 97 overpower protection 50 P panel operation basics 26 PAUSE 63 Popup menu 26 power consumption 115 POWER switch 8 preset memory 44 recalling 46 saving 45 program 60 70 program number 61 71 protection functions 49 RAMP 63 Range 61 71 RECALL key 9 remote sensing 24 response 52 response speed 52 REV 49 51 reverse voltage detection 49 51 ROM version 2 rotary knob 26 RPTSTEP 77 135 S SAFETY 46 sequence examples 64 74 sequences execution 77 serial number 10 setup memory 44 47 recalling 48 saving 47 SHIFT key 9 26 short function 40 short icon 40 slew rate 38 soft start 39 step 60 70 storage humidity range 115 storage temperature range 115 STORE key 9 switching function 36 T TIME BASE 71 time measurement 53 TRIG 63 trigger signal output 94 U undervoltage protection 51 UVP 51 vV version 2 version checking 16 voltage measurement 53 wW warm up 99 weight 115 e 136 PLZ 4WL 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
49. SF 002 0 010A UU UU END END END prev TOTAL 002 NEXT prev TOTAL 002 next TOTAL 002 Step Editing Screen Contents Step value The fundamental setting Step execution time The time for which the step will be executed Step execution pattern Load on off ramp step transition trigger signal during step execution and pause Step value Set the fundamental setting current conductance voltage or power value Step execution time Set the time for which the step is executed 0 00 00 001 to 999 59 62 PLZ 4WL Editing Steps in a Normal Sequence Step execution pattern Set the execution pattern Item Setting Description LOAD ON Load on OFF Load off Turns the load on or off RAMP ON Slope OFF Step The ramp step transition TRIG ON Output OFF Don t output The trigger signal during step execution PAUSE ON Pause OFF Don t pause Whether or not to pause E RAMP Use this setting to specify the step transition If you set RAMP to ON the current changes in a slope within the step if you set it to OFF the current changes instantly and is sustained throughout the step Example Setting 10 A Example Setting 10 A Step transition RAMP OFF Ramp transition RAMP ON Step execution time 1 s Step execution time 1 s TO a ToT 1s a 1s E TRIG Use this setting to specify whether or not to produce a trigger signal If you set TRIG to ON the TRIG OUT terminal on the front panel produces
50. Turning the load off after a specified amount of time The function for turning the load off after a specified period of time is convenient for discharge testing of batteries and capacitors By factory default the load on timer is off To turn the load on timer on from the menu select 1 Setup gt 4 Cut Off gt Time and set the time Turn the power switch off and then on again to enable the settings When the load turns off a popup window appears indicating the input voltage at the time the load was turned off PLZ 4WL Oe Operation Modes The following four operation modes are available on the PLZ 4WL Constant voltage mode can be added to constant current mode or constant resistance mode CV e Constant current mode CC mode CC CV mode e Constant resistance mode CR mode CR CV mode e Constant voltage mode CV mode e Constant power mode CP mode Switching between operation modes To switch between operation modes press MODE while the load is off You can press CV SHIFT MODE in CC mode or CR mode to add CV mode You can add CV mode even while the load is on NET D 00m 0 000v Ow 000 4 stewRATE 0 01 mAs Operation mode MODE MODE MODE MODE cc crR cv r e A CV CV CV CV 0 6 0 CV CV MODE MODE cc cv O cCRecy O PLZ 4WL Basic Functions 29 30 Constant Current Mode CC mode In constant current mode CC mode
51. W when the cursor is at Loop the bottom screen appears In the bottom screen if you press A when the cursor is at Last Load the top screen appears SEC M No 11 Program11 50A 30V SEQ M Last Load ON A Last Set 1 000A Mode p 0003 RPTSTEP 15 TIME BASE ims PREV Top Bottom Sequences A In the screens for configuring the programs in the sequence you can configure the following items After you finish configuring the program settings press NEXT SHIFT gt to configure the step settings Item Setting Description No 11 Program number 1 to 10 are for the normal sequences Memo Up to 11 characters A memo Mode FCC CC mode The program operation mode FCR CR mode Range 50 A 30 V example The current and voltage ranges for the program vary depending on the model Loop 1 to 9998 The number of times that the program will repeat 9999 Infinite repetition Last Load OFF Load off The state of the load on or off after the sequence ON Load on finishes Last Set 0 to 100 of the range The current at the end of the sequence RPTSTEP 3 to 10241 The last step number TIME BASE 25 ys to 100 ms Step execution time 1 The minimum number of steps in a fast sequence is 3 2 The setting resolution is 25 us for values between 25 us and 0 1 ms and 100 us for values between 0 1 ms and 100 ms 71 72 Editing Steps in a Fast Sequence After you finish configuring the progra
52. Z 4WL is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition 4 Turn the rotary knob to set the conductance and the voltage The value that you can set conductance or voltage changes when you press SET VSET The CR CV mode settings are complete Press LOAD to start testing You can change the conductance and voltage even when the load is on Basic Functions 33 34 Constant Voltage Mode CV mode In constant voltage mode CV mode you set the voltage V Configuring CV mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition Select the operation mode and set the voltage 6 LOAD MODE RANGE LOAD VRANGE SHIFT O Make sure that the load is off The load is off when the LED to the upper left of the LOAD key is off If the LED is lit press LOAD to turn the load off Press MODE to select the operation mode CV The operation mode popup menu appears Press MODE repetitively until CV is highlighted on the menu After you select the operation mode the popup menu disappears and CV appears on the display Press RANGE to select the current range The current range popup menu appears Each time you press RANGE the range switches between L M and H Press RANGE until the range that you want to select is highlighted After you select a range the po
53. an be used to disconnect the product from the AC 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 falls under IEC Overvoltage Category II energy consuming equipment supplied from the fixed installation 1 Check that the POWER switch is off 2 Check whether or not the AC power line is compatible with the input rating of the product The voltage that can be applied is any of the nominal power supply voltages in the range of 100 Vac to 240 Vac The frequency is 50 Hz or 60 Hz Frequency range 47 Hz to 63 Hz Connect the power cord to the rear panel AC INPUT OG Connect the power cord plug to an outlet with a ground terminal To a properly grounded outlet PLZ 4WL Turning the Power On Turning the POWER switch on Memo The condition in which characters SET is highlighted is called the fundamental setting entry condition PLZ 4WL If the POWER switch is turned on for the first time after purchasing the PLZ 4WL the PLZ 4WL starts up using factory default settings For all other cases the PLZ 4WL starts up using the settings that existed when the POWER switch was turned off the last time Load on indicator LED HH on 5k Ss 5 MODE SET VSET RANGE Fi S vey 5 LOAD
54. arm The alarm release terminals are pulled up to the internal circuit s 5 V level by a resistor that is approximately 10 KQ The maximum allowable voltage is 5 V The logic threshold levels are CMOS Alarm status output y Photocoupler P C E lt lt 20 lt lt lt lt 22 lt To monitor the alarm status externally monitor the output signal across pins 20 and 22 of the J1 connector The signal is on when a protection function OVP OCP OPP OHP REV or UVP is activated or when an external alarm is applied Maximum applied voltage 30 V Maximum current PLZ 4WL 8 mA External Control o 93 94 Monitor Signal Output Trigger signal output The trigger signal can be used as a synchronization signal for monitoring the waveform of the switching operation on an oscilloscope It can also be used to synchronize with an external device during sequence execution The trigger signal is output from the TRIG OUT connector BNC connector on the PLZ 4WL front panel The trigger signal output voltage is approximately 4 5 V The pulse width is 2 us or more The output impedance is approximately 500 Q The TRIG OUT connector is connected to the chassis electric potential It is isolated from A COM The trigger signal output is generated Front panel under the following conditions TRIG OUT Approx 2 us e During switching operation 500 0 e When a step in which trigger output Approx 4 5 V has been
55. ated first and then program 2 You can edit the programs in any order that you like It is OK to create program 2 first and then create program 1 21 Programi NCC 50A 30V 0001 SEO Last Load OFF A Last Set 0 000A Chain OFF PREV 4 Press EDIT SHIFT A The program editing screen appears Set the program number to 1 If the cursor is not blinking at No press A and W to move it there Turn the rotary knob to select the number Press w to move the cursor to Memo and enter Program1 Enter the text using the rotary knob and lt q and gt Press w to move the cursor to Mode and select an operation mode CC mode Turn the rotary knob to select NCC Press w to move the cursor to Range and set the current and voltage ranges 50 A and 30 V Turn the rotary knob to select 50 A 30 V Press w to move the cursor to Loop and set the number of times to execute the program to 1 Turn the rotary knob to select the number Press w to move the cursor to Last Load and select the state that the load will be in after the sequence ends select OFF In this example program 2 will be executed after program 1 so this setting is ignored Press w to move the cursor to Last Set and select the current that the load will supply after the sequence ends select 0 A In this example program 2 will be executed after program 1 so this setting is ignored Press w to move the cursor to Chain
56. ction OPP Can be set to a value from 10 to 110 of the rated power The action can be set to load off or limit Overheat protection OHP Turns off the load when the heat sink temperature reaches 90 C Undervoltage protection Turns off the load when the specified value is detected UVP Can be set to a value from 0 3 V to 30 V Reverse connection Implemented through a fuse protection REV Turns off the load when an alarm occurs PLZ 4WL i i N eccce Specifications Sequence function Normal Operation modes CC CR CV and CP sequence Maximum number of 256 steps Step execution time 1 ms to 999 h 59 min Time resolution 1 ms for 1 ms to 1 min 100 ms for 1 min to 1h 1sfor1hto10h 10 s for 10 h to 100 h 1 min for 100 h to 999 h 59 min Fast Operation modes CC and CR sequence Maximum number of 1024 steps Step execution time 25 us to 100 ms Time resolution 25 us for 25 us to 100 us 100 us for 100 ps to 100 ms Other functions 0000000000000000000000000000000000000000000000000000000000000000000 no C Elapsed time display Measures the time from load on to load off Can be turned on and off O Measures from 1 s up to 999 h 59 min 59 s Y Auto load off timer Automatically turns off the load after a specified time elapses ET Can be set to off or a time within the range of 1 s to 999 h 59 min 59 s 2 e PLZ 4WL s 113 Specification
57. ctions encountered during the use of the PLZ 4WL Representative symptoms and their possible check items are indicated Look for the item that corresponds to your case In some cases the problem can be solved quite easily If your problem does not correspond to any of the listed items we recommend that you initialize the PLZ 4WL to its factory default settings If you carry out the corrective action but the situation does not improve contact your Kikusui distributor or agent E Symptom 1 Nothing appears on the display when the POWER switch is turned on Check Item Location and Status of the Object Check Result Possible Cause Remedy Is rated voltage applied for the input power supply AC No Broken power cord Bad connection at the AC INPUT connector on the rear panel Check that the power cord is not broken and that the connection at the AC INPUT connector is secure Yes Malfunction Remove the power cord plug from the outlet Immediately stop the use of the instrument and request repairs E Symptom 2 The display is dark Check Item Location and Status of the Object Check Result Possible Cause Remedy Is rated voltage applied for the input power supply AC No Low supply voltage Use the PLZ 4WL in the input supply voltage range Yes Bad contrast adjustment Adjust the contrast See Turning the Power On on page 15
58. d driver circuit yourself NOTE DUT PLZ 4WL Series J1 connector on the rear panel High current relay Turning the short function on and off You can turn the short function on and off when the load is on ENE D 0 00m 0 000v 0 000w CC stewraTE 0 01 maps Short icon LOAD SHORT SHIFT O If you press SHORT SHIFT SLEW RATE while the short function is off the short icon is displayed and the short function turns on In constant current mode CC mode the fundamental setting is set to the maximum current value in constant resistance mode CR mode the fundamental setting is set to the minimum resistance value If you press SHORT SHIFT SLEW RATE while the short function is on the short icon disappears and the short function turns off The fundamental setting returns to the value that it was at before the short function was turned on 40 PLZ 4WL Locking the Keys You can lock the PLZ 4WL s keys to prevent mistaken operations such as changes to the settings and overwriting of memory entries and sequence data The following keys can be used even when the keys are locked e LOCK SHIFT LOCAL locks and unlocks the keys e LOAD turns the load on and off A B and C recall preset memory entries directly e A B and C and ENTER used to recall preset memory entries using the safety function e RECALL rotary knob and ENTER used to load setup memory entries e RUN STOP SH
59. de constant voltage to CC or CR mode p 31 p 33 24 SET VSET key Used to set the fundamental settings current conductance voltage or power MENU key Displays the menu setup screen p 54 25 RANGE key Switches between the appropriate ranges current conductance voltage or power for the current operation mode V RANGE key Switches between voltage ranges 26 SLEW RATE key Used to set the slew rate p 38 SHORT key Turns the short function on and off p 40 27 OPP OCP key Used to set the power at which overpower protection OPP is activated or p 50 the current at which overcurrent protection OCP is activated UVP key Used to set the voltage at which undervoltage protection UVP is activated p 51 28 Current Range Displays the current range 29 Voltage range Displays the voltage range 30 Lock icon Appears when the key lock is enabled p 41 31 Remote icon Appears during remote control 32 COARSE FINE icon Indicates whether the rotary knob is set to coarse or fine adjustment p 26 33 mMA A Displays the measured current value V Displays the measured voltage value Ww Displays the measured power value 34 Operation status Indicates the operation mode being used or the status p 29 In CC CV mode CC or CV is displayed In CR CV mode CR or CV is displayed 35 Elapsed time Displays the amount of time that has elapsed since the load was turned on p 53 36 Setting Displays the fundamental setting current voltage power
60. e Twist See p 54 To avoid noise interference use a highly stable low noise external voltage source and twisted signal wires Turn the POWER switch off Connect the external voltage across pins 1 and 2 of the J1 connector Turn the POWER switch on and make sure that the load is off Set the operation mode and the current range If you also want to control the current range externally be sure to set the range to H Ol A GP From the menu select 2 Configuration gt 3 External gt Control CC CR CP gt ON Doing so enables the external control of CC CR and CP mode Turn the power switch off and then on again The menu settings are applied PLZ 4WL ee Controlling Voltage Mode cv mode and the CV modes When you apply an external voltage of 0 V to 10 V to the PLZ 4WL the voltage that it produces varies in accordance with the external voltage An external voltage of 0 V results in a voltage of 0 V An external voltage of 10 V results in a voltage of 100 of the specified range Connected pins J1 5 signal J1 6 common CAUTION To avoid damaging the PLZ 4WL observe the following precautions The maximum voltage that can be applied across pins 5 and 6 of the J1 connector is 11 V Do not apply a voltage that exceeds this value e Pin 6 of the J1 connector is connected the negative load input terminal Make sure that the wire of pin 6 does not touch any of the other pins
61. e 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 keep all packing materials in case the product needs to be transported at a later date Accessories The power cord that is provided varies depending on the destination for the product at the factory shipment iL or Sey Rated voltage 125 Vac PLUG NEMA5 15 85 AA 0003 Power code 1 pc Load input terminal cover oe o M3 112 018 O CD ROM 1 pc SA 6035 12 Load input terminal cover screws 2 pc Rated voltage 250 Vac Rated voltage 250 Vac PLUG CEE7 7 PLUG GB1002 85 AA 0005 85 10 0790 Q1 500 122 D a N M1 100 012 O s 101 007 M4 100 007 1 pc Load input terminal screw set 2 pc 91 80 6940 Chassis connection wire 1 pc Setup Guide 1 pc Z1 004 880 Quick Reference Japanese Z1 004 890 1pc English Z1 004 892 1 pc PLZ 4WL Checking the Package Contents Attachment to the rack mount frame Before assemble the unit to the rack mount frame remove the handle and the feet As for the instruction of mount assembly please refer to the instruction manual of KRA series Install the suitable support angles applying to the used rack system to support the instrume
62. e see the table of CV mode settings The measured value gain MON is set automatically E Step H Calibrate the gain value for the internal reference voltage for the protection function settings Press ENTER The gain calibration screen CV 4 V Limit Gain Adjust appears 1 1 Press lt 4 or gt to set the cursor position of DAC REF and then turn the rotary knob so that the input voltage is within 0 05 of the value corresponding to 100 of the full scale value see the table of CV mode settings Press ENTER The load turns off automatically The calibration of the low range voltage values is complete Maintenance 103 Ending Calibration Calibrating the high range Calibrate the High range in the same way that you calibrated the Low range In step 4 select 5 CV 30 V The calibration of CV mode is complete after you calibrate the High range Ending Calibration 1 Press PREV SHIFT 4 The screen that was displayed before the calibration screen appears 2 Press MENU SHIFT SET VSET The screen that was displayed before the menu appears NOTE When you press ENTER or NEXT SHIFT P in the gain calibration screen the calibration data is written to the internal memory If you only want to check the calibration data be sure to press PREV SHIFT lt or MENU SHIFT SET VSET to exit the gain calibration screen 104 PLZ 4WL ee Troubleshooting This section describes remedies for malfun
63. e to If you select a memory number that has already been saved to the previous settings are overwritten 4 To enter a memo press the w key to move the cursor The cursor blinks beneath No You can select characters by turning the rotary knob Use the and lt q keys to move the cursor You can register up to 15 characters Press A to move the cursor back to the memory number 5 Press ENTER The STORE SHIFT RECALL key lights and the settings are saved to the setup memory entry If you change the settings the key light turns off PLZ 4WL Advanced Operations 47 48 Setup Memory Recalling setup memory entries You can save almost all the settings including the operation mode and range to the setup memory Please be aware that if the saved operation mode and range are different from the current settings they will change 1 Make sure that the load is off If the LOAD LED is lit press LOAD to turn the load off 2 Press RECALL Memo The RECALL key blinks and the setup memory recall screen appears The last You can cancel by memory number that an entry has been saved to appears when the PLZ 4WL has just pressing PREV been shipped the number that appears is O SHIFT q Turn the rotary knob to select the appropriate memory number If an entry has a memo the memo will appear beneath the entry s memory number Press ENTER The RECALL key lights and the setup memory settings are r
64. e DC INPUT terminals on the front panel Z N WARNING Possible electric shock e Do not touch the load input terminals when the output is turned on e Always use the load input terminal cover NCAUTION To avoid damaging the product observe the following precautions Do not connect the DUT to the DC INPUT terminals when the load is on To avoid overheating observe the following precautions Attach crimping terminals to the wires and use the attached screw set to connect them Installation and Preparation Negative terminal Load input terminals Using the load input terminal cover Pass the wiring that you intend to connect to the load through the load input terminal cover Cut the cover s sleeves to match the thickness of the wiring Load input terminal cover l Cut to match the thickness of the load wiring Connection procedure 1 Turn the POWER switch off 2 Make sure that the output of the DUT is off 3 Attach crimping terminals to the load wiring The DC INPUT terminals have open bolt holes M8 for connecting the load wiring Attach appropriate crimping terminals 4 Pass the wiring that you want to connect to the load through the attached load input terminal cover 21 PLZ 4WL 22 Connecting to the Load Input Terminals Connect the load wiring to the load input terminals using the load input terminal screw set that came with the PLZ 4WL Bolt M8 x 18 Nut M8 Load wiring U
65. e and range settings for the preset memory entry that you want to recall 2 Press the key that corresponds to the preset memory entry A B or C that you want to recall The selected key lights The settings that correspond to the selected memory entry are recalled and applied If you change the settings the key light turns off PLZ 4WL Setup Memory You can save up to 100 setup memory entries 0 to 99 The current settings of the items listed below are saved to the setup memory You can add a memo of up to 15 characters in length to each memory entry You can recall a saved memory entry by specifying its number e Operation mode Fundamental setting values at the time the entry is saved e Current range e Voltage range e Slew rate e ABC preset memory contents e Switching level current conductance or percentage e Switching interval frequency and duty ratio or an amount of time e Protection function activation values Saving settings to setup memory Memo entry area Set the operation mode range and other settings to the values that you want to save 2 Press STORE SHIFT RECALL Memo The STORE key blinks and the setup memory storage screen appears The last You can cancel by memory number that an entry has been saved to appears when the PLZ 4WL has just pressing PREV been shipped the number that appears is O SHIFT q 3 Turn the rotary knob to select the memory number that you want to sav
66. e manual is written for readers with sufficient basic knowledge of how to control instruments using a personal computer If you find any incorrectly arranged or missing pages in the manual they will be replaced If the manual gets lost or soiled a new copy can be provided for a fee In either case please contact Kikusui distributor agent and provide the Kikusui Part No given on the cover The Operation Manual has been prepared with the utmost care however if you have any questions or note any errors or omissions please contact Kikusui distributor agent Product ROM versions that this manual covers This manual applies to products with firmware versions 1 0X When contacting us about the product please provide us with The model marked in the top section of the front panel The ROM version see page 16 The serial number marked in the rear panel Trademark acknowledgements Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and or other countries Other company names and product names used in this manual are generally trademarks or registered trademarks of the respective companies Copyrights Reproduction and reprinting of operation manual whole or partially without our permission is prohibited Both unit specifications and manual contents are subject to change without notice 2010 Kikusui Electronics Corporation PLZ 4WL Notations used in this manual e T
67. ecalled If you change the settings the key light turns off PLZ 4WL Protection Functions PLZ 4WL The protection functions can be used to automatically turn off the load or limit the current to prevent the PLZ 4WL s internal circuitry from being damaged and to protect the DUT An alarm occurs when the protection functions are activated When an alarm occurs the load turns off or the current is limited and the ALARM STATUS pin pin 20 of the J1 connector on the rear panel turns on open collector output from a photocoupler When the load turns off a popup window appears on the screen no 2 a P CC g SLEwRATE 2 500 A us O E Example of the display when UVP is activated O Oo gt pe lt Protection function types SOHHOHHHSHHHSHHSHHHHSHHSHHHHHHHSHHSHHSHHHHOHHHHHHSHHHHHHHHHHHHHHHHHHHHHOHOOOHOO The types of protection functions and what they do are listed below How the protection functions operate in different operation modes is explained in the appendix Protection Function Protection Function Activation Value ace ie Overcurrent A specified current value overcurrent protection Load off or limit protection OCP activation value or 110 of the maximum current range value Overvoltage 115 of the maximum input voltage Load off protection OVP Overpower protection A specified power value overpower protection Load off or limit OPP activation value or 110 of the maximum
68. ed in black function is enabled If you press SET VSET while holding down SHIFT the MENU indicated in blue is enabled This manual denotes the operation of pressing a key while holding down SHIFT as SHIFT notation above the key For example the selection of the MENU key is denoted as MENU SHIFT SET VSET In this case press SET VSET while holding down SHIFT Adjusting the display contrast You can adjust the contrast of the display by turning the rotary knob while you hold SHIFT 26 PLZ 4WL Turning the Load On and Off The load is on when current is flowing through the PLZ 4WL or when the PLZ 4WL is supplying current The load is off when current is not flowing through the PLZ 4WL and the PLZ 4WL is not supplying current You can turn the PLZ 4WL s load on and off by pressing LOAD The terms load on and load off appear frequently in this manual so please remember them Z CAUTION To avoid damaging the PLZ 4WL be sure to follow the proper procedures for turning the load on and off Turning the load on PLZ 4WL 1 Make sure that the load is off 2 Apply the output of the DUT to the PLZ 4WL If you are using a relay electromagnetic switch or other device in the connection between the load input terminals and the output terminals of the DUT turn the device on 3 Press LOAD to turn on the load E Starting with the load turned on By factory default the load is not turned on u
69. ee Remote Sensing on page 24 PLZ 4WL Specifications This chapter contains the specifications and gives the dimensions of the PLZ 4WL Specifications Unless specified otherwise the specifications are for the following settings and conditions Ratings The warm up time is 30 minutes with current flowing TYP These are typical values that are representative of situations where the PLZ 4WL operates in an environment with an ambient temperature of 23 C These values do not guarantee the performance of the PLZ 4WL After PLZ 4WL 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 of set Denotes a percentage of the input voltage input current or input power setting of f s Denotes a percentage of the rated input voltage rated input current or rated input power of rdng Denotes a percentage of the input voltage input current or input power reading Operating voltage DC 0 3 V to 30 V2 Current 50A 100A Power 165 W 330 W 1 The minimum operating voltage at which current begins to flow through the PLZ 4WL is approximately 50 mV At the load input terminals 2 The minimum operating voltage including the voltage drop due to the wire inductance component in switching mode increases by approximately 40 mV per 1 A us of the slew rate setting Constant current CC mode
70. en LIMIT The current is limited OCP is activated OPP LOAD OFF The load is turned off Action to be performed when LIMIT The current is limited OPP is activated 3 Memory Recall DIRECT Method for recalling the preset SAFETY memory 4 Cut Off Time OFF Auto load off timer 0 00 01 to 999 59 59 Press lt q and gt to move the Hour minute second cursor between the hour minute and second positions 5 Response CV Response FAST CV mode response speed NORMAL CR Response FAST CR mode response speed NORMAL 2 Configuration 1 Power On Load On OFF The load is off when the power State of the load when the power is turned on switch is turned on ON The load is on when the power is turned on Key Lock OFF Keys are not locked Key lock ON Keys are locked 2 Interface Control GPIB RS232C USB Interface setting GPIB Address 1 to 30 1 GPIB address RS232C Baudrate 2400bps 4800bps 9600bps 19200bps Baud rate Data 8 Data length fixed at 8 bits and Stop 1 2 the stop bit Parity NONE Parity fixed at NONE Ack OFF ON Acknowledgment usp2 VID 0x0B3E Vendor ID PID 0x1019 PLZ164WL Product ID 0x1020 PLZ334WL S N AB123456 example Serial number 3 External CC CR CP OFF Disabled ON Enabled External control for the CC CR and CP modes CV OFF Disabled ON Enabled External control for CV mode ADD CC OFF Disabled ON Enabled Superimpose current on the CC mode panel setting through external control LoadOn IN LOW Turned on by a low level External
71. er 53 B B key 9 c C key 9 calibrated items 98 calibration 98 CC mode 30 119 CC mode calibration 100 CC CV mode 31 126 Chain 61 closed circuit voltage 53 coarse adjustment 26 communication function 114 conductance 32 constant current and constant voltage mode 126 constant current mode 30 119 constant power mode 35 122 constant resistance and constant voltage mode 128 constant resistance mode 32 120 constant voltage mode 34 124 Count Time 53 CP mode 35 122 CR mode 32 120 CR CV mode 33 128 current monitor output 94 CURSOR 9 Cut Off Time 53 cutoff voltage 53 CV mode 34 124 CV mode calibration 102 PLZ 4WL default settings list 118 DEL key 9 dimensions 116 DIRECT 46 display contrast adjusting 26 elapsed time display 53 ENTER key 9 F fast sequence 58 70 feet removal 13 FILL function 73 fine adjustment 26 front panel BNC terminal 114 fundamental setting entry condition 15 G gain value 98 handle removing 13 MON terminal 8 initial drift 99 inrush current 115 INS key 9 J J1 connector 10 81 J1 connector pin arrangement 82 K key icon 41 keylock function 41 L Last Load 61 71 Last Set 61 71 LOAD 63 load on and load off 27 LOCAL key 9 lock function 41 LOCK key 9 Loop 61 71 malfunctions and causes 105 Memo 61 71 menu settings 54 Mode 61 71 normal sequence 58 o OCP 50 offset value 98 operating area of the
72. es are bundled together and little heat is radiated Nominal Cross AWG Reference Cross Allowable Current Kikusui Sectional Area Sectional Area mm A Ta 30 C Recommended mm2 Current A 2 14 2 08 27 10 3 5 12 3 31 37 55 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 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 2 298 125 344 150 395 300 200 469 250 556 325 650 i Excerpts from Japanese laws related to electrical equipment 17 18 Methods for Ensuring Stable Operation When you use the PLZ 4WL at a high response speed it is important to reduce the inductance of the load wiring and configure the response speed setting appropriately If the conditions are not configured appropriately oscillation and other forms of operational instability may occur Reducing the load wiring inductance Voltage generated by current changes The wiring has an inductance of L If current changes quickly a large voltage is induced on both sides of the wiring All of this voltage will be applied to the load input terminals of the electronic load if the impedance of the DUT is low Voltage E hereafter referred to as the generated voltage which is generated according to the wiring inductance L and the amount of current change is
73. et LOAD to ON Leave RAMP TRIG and PAUSE set to OFF Press w to move the cursor to step 003 For step 3 set TRIG to ON Leave LOAD RAMP and PAUSE set to OFF All the settings for program 1 have been entered Next we will edit program 2 Sequences A 67 68 Sequence Example Normal Sequence Editing program 2 After you finish editing program 1 edit program 2 f Memo x imove the Cursor eral 1 Press PREV SHIFT lt three times to display the by pressing A W lt 4 4 program editing screen and p gt Programi NCC To exit the sequence 50A 30V editing screens press 0001 PREV SHIFT q Set the program number to 2 If the cursor is not blinking at No press amp and W to move it there Turn the rotary knob to select 2 Press w to move the cursor to Memo and enter Program2 Enter the text using the rotary knob and lt q and gt Press wW to move the cursor to Mode and select an operation mode NCC mode Press w to move the cursor to Range and set the current and voltage ranges to 50 A and 30 V Press w to move the cursor to Loop and set the number of times to execute the program to 2 Press w to move the cursor to Last Load and select the state that the load will be in after the sequence ends select OFF SEQ m Last Load OFF A Last Set 0 000A Chain OFF PREV Press w to move the cursor to Last Set and select the current that the load will sup
74. expressed as follows TZ PLZ 4WL L E L x AV AT E Generated voltage L Load wiring inductance Al Change in current AT Duration of time over which the current changes Generally a wire s inductance is approximately 1 uH per meter of wire If the DUT and the electronic load are connected using 1 m of wire total length of the positive and negative wiring a change in current of 50 A us will generate a voltage of 50 V The negative load input terminal provides the reference potential for the external control signal The generated voltage may cause the device connected to the external control signal to malfunction When the electronic load is in constant voltage constant resistance or constant power mode it uses the voltage at the load input terminals to change the load current So it is easy for the electronic load to be influenced by the generated voltage Large voltage drop caused by current changes during switching operation Make the wiring to the DUT as short as possible and twist it When the wiring is long or contains a large loop its inductance increases and current changes caused by switching operations will result in large voltage drops If the instantaneous voltage value at the load input terminals drops below the minimum operating voltage the recovery response will be delayed significantly You need to be especially careful when the slew rate setting is high and when switching operation is performed at hi
75. fety Complies with the requirements of the following directive and standards Low Voltage Directive 2006 95 EC EN 61010 1 Class 14 Pollution degree 2 Electromagnetic compatibility EMC 3 Complies with the requirements of the following directive and standards EMC Directive 2004 108 EC EN 61326 1 Class A EN 55011 Class A Group 1 EN 61000 3 2 EN 61000 3 3 Applicable under the Following Condition The maximum length of all cabling and wiring connected to the PLZ 4WL must be less than 3 m 1 Approx 35 A when receiving an input of 100 Vac wn Does not apply to specially made or modified PLZ 4WLs Limited to products that have the CE mark on their panels Not be in compliance with EMC limits unless the ferrite core is attached on the cable for connection of J1 connector This is a Class product Be sure to ground this product s protective conductor terminal The safety of this product is only guaranteed when the product is properly grounded a This is a Class A equipment This product is intended for use in an industrial environment This product may cause interference if used in residential areas Such use must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts D This is a Group 1 equipment This product does not generate and or use intentionally radio frequency energy in the
76. form of electromagnetic radiation inductive and or capacitive coupling for the treatment of material or inspection analysis purpose N Specifications 115 Specifications Dimensions M4 screw hole x 4 Diameter 9 0 35 x 2 Maximum depth that screws can be Diameter 30 1 18 Diameter 5 0 97 inserted is 6 mm 0 31 inches A f Foot x 4 Foot attachment hole x 4 M3 screw hole x 4 8 sk s Eya 8 slit g L e 2 op 38 3 ety CEy Bs ae I7 P alg g H ae N 70 2 76 275 10 83 55 2 16 MAX455 17 91 gt 214 5 8 44 5 MAX40 400 15 75 1 57 emma 7 m D oo F a o g o0 a o 0000000 s n D Ooo000000 o Tue ma Aa x 1 Unit mm inch e 116 PLZ 4WL e Appendix A Operating Area B Sequence Program Creation Table C Options 118 A Operating Area As shown in the figure the PLZ 4WL can be used within the area enclosed by L1 the constant voltage line defined by the rated voltage L2 the constant power line defined by the rated power L3 the constant current line defined by the rated current and L4 the constant voltage line def
77. ge 50 A 30 V Current A Voltage V Loop 1 to 9999 0002 Last Load OFF ON OFF Last Set 0 Chain OFF 1 to 10 OFF Step number iis Peed w petal LOAD RAMP TRIG PAUSE Note 1 10A 200s ON ON OFF OFF 2 5A 50s ON OFF OFF OFF 3 8A 150 s ON ON OFF OFF PLZ 4WL 133 C Options The following options are available for the PLZ 4WL For details contact your Kikusui agent or distributor E Rack mount frame A frame for mounting the PLZ 4WL on a rack To support the PLZ 4WL attach an angle support to it that is appropriate for the frame KRA3 Inch rack EIA standard KRA150 Milli rack JIS standard KRA150 24 5 0 965 100 3 94 Unit mm inch E Low inductance cable This product is a low inductance load cable that suppresses voltage drops that occur when current changes at a high rate TLO1 PLZ TLO2 PLZ TLO3 PLZ Full length 500 mm 1000 mm 2000 mm Inductance value typical value 140 nH 150 nH 200 nH 1 Between the insulation caps 2 at 100 kHz eu mi E Analog remote control connector kit OP01 PLZ 4WL A kit for connecting to the J1 connector on the rear panel Socket 1 pe Pins 26 pcs Protection cover 1 set PLZ 4WL INDEX S 24 CV mode 30 32 S 24 A A key 9 ABC preset memory 45 AC INPUT 10 accessories 12 115 ALARM is activated 106 alarms clearing 51 analog external control 114 auto load off tim
78. gent or distributor Nothing is displayed Make sure that the power cord is connected properly and then turn the POWER switch on again p 26 Adjusts the contrast of the display Abnormal current or voltage values are being displayed Turn the PLZ 4WL POWER switch off and then on again An alarm has occurred A protection function has been activated Eliminate all the cause of the alarm pe p Checking the version J p 54 screen PLZ164WL VERSION SUB 1 00 MAIN 1 02 PREV You can check the firmware and ROM versions by selecting 1 Model Info on the menu Firmware version ROM version Example for the PLZ164WL Turning the POWER switch Off Flip the POWER switch to the O side to turn the PLZ 4WL off Z CAUTION After you turn the POWER switch off wait at least 5 seconds after the fan stops before you turn the POWER switch back on Turning the PLZ 4WL on too soon after you turn it off can cause damage to the inrush current limiter circuit as well as reduce the life of components 16 such as the POWER switch and the internal input fuses The PLZ 4WL saves the panel settings except the load on off setting that were in use immediately before the POWER switch was turned off When you turn on the POWER switch the PLZ 4WL starts up with the saved settings If the POWER switch is turned off immediately after the settings have been changed the last settings may n
79. gh currents PLZ 4WL Methods for Ensuring Stable Operation Example of waveform any ey Current Al Voltage across the load input Voltage across the terminals load input terminals Minimum operating voltage This change results in unstable E j oscillation and hunting chi 10 0V_ M 20 0us A Ch4 f 10 0mv 9 10 0mV 5 23 Feb 2010 27 00 19 24 36 To make sure that the voltage resulting from inductance remains within the range of the electronic load s minimum operating voltage and maximum input voltage make the wiring as short as possible and twist the wiring or reduce the slew rate If it is not necessary to operate at a high response speed reduce the slew rate in CC mode or reduce the response speed in CR mode Current phase lag Even during DC operation it is possible for the phase lag of the current to result in unstable electronic load control and oscillation Make the wiring as short as possible and twist it If you only need to use DC operation connecting a capacitor and a resistor to the load input terminals can reduce oscillation Do not exceed the capacitor s ripple current rating Keep the wire short I 100 cm or less Device R PLZ 4WL Series under test Electronic Load Cc Lo f O Twist Example R 10 Q C 100 uF Optimizing the response speed PLZ 4WL You can change the response speed in CV mode and CR mode The wiring ind
80. gt RM2 gt RN so that the input current load current increases the operating point moves along segment MN M1 gt M2 gt N When the overpower protection OPP setting is PN OPP is activated when point N is reached At this point one of two types of operations occurs depending on the protection action setting for OPP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4WL sinks current as a constant power load at point N Even if you attempt to decrease the resistance to increase the current the current will not increase beyond point N If you increase the resistance to decrease the current overpower protection e 128 PLZ 4WL e Operating Area PLZ 4WL OPP is cleared The PLZ 4WL returns to constant resistance CR mode and the operating point moves along segment MN The load is turned off no current flows LOAD OFF The PLZ 4WL stops operating as a load Point N The PLZ 4WL switches out of constant resistance CR mode LIMIT Overpower protection OPP continues and the PLZ 4WL operates as a constant power load If the overpower protection OPP setting is PN1 because overpower protection OPP is not activated as resistance is reduced so that the current is increased the operating point reaches point S At point S the PLZ 4WL switches to constant voltage CV mode The voltage is fixed at the user specified voltage VQ The operat
81. he PLZ164WL Electronic Load is also referred to as the PLZ164WL the PLZ334WL Electronic Load is also referred to as the PLZ334WL The word computer used in the text is a collective term for personal computers and workstations The following markings are used in this manual Indicates a potentially hazardous situation which if ignored could result in death or serious injury A 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 reference to detailed information gt Indicates menu settings that you select The menu item to the left of the gt symbol is a higher level menu SHIFT key name Indicates an operation that requires you to press a key indicated in blue letters while holding down SHIFT Memo Indicates useful information PLZ 4WL Product Overview The PLZ 4WL Series Electronic Load is a multifunctional system designed to offer the highest levels of reliability and safety The electronic load contains a stable and high performance current control circuit that enables high speed load simulations In addition its CPU control feature works to improve operability and multifunctional capability The high precision current settings provide you with sufficient resolution Because the electronic load
82. he air intake or outlet Yes Overheat protection tripped Allow at least 20 cm between the air outlet obstructed Clogged dust filter and the wall In addition do not place objects within 20 cm Clean the dust filter Is OCP tripped Yes The OCP setting is small Reset the OCP value in the setup screen See Protection Functions on page 49 Is OPP tripped Yes The OPP setting is small Reset the OPP value in the setup screen See Protection Functions on page 49 E Symptom 6 The load cannot be turned on Check Item Location and Status of the Object Check Result Possible Cause Remedy A sequence is in operation Yes gt Wait for the sequence operation to finish Abort the sequence by pressing STOP No The load on off logic Load ON In the menu select Configuration and set IN is set to low Load ON INput to HIGH See Menu on page 54 Are you using an external Yes gt The load key will be valid after you use an signal to turn the load off external signal to turn the load on See Turning the Load On and Off through External Control on page 89 E Symptom 7 Even after the load is turned on current does not flow or the voltage indication is negative Check Item Location and Status of the Object Check Result Possible Cause Remedy Are the sensing wires connected in reverse Yes Connect the wires properly S
83. he trigger signal is output on the rising edge of the pulse signal applied to the trigger input terminal The input pin is pulled up to the internal circuits 5 V level by a resistor that is approximately 10 kQ The maximum allowable voltage is 5 V The logic threshold levels are CMOS 5V Ji 100 ms or greater Approx 10 kQ 133 lt 5 e n UU lt lt 15 16 lt lt ov Input a signal with a pulse interval of 100 ms or greater TRIG INPUT A COM V PLZ 4WL External Control o 91 Oe Controlling the Current Range Externally You can use an external control signal to control the current range You can use the range status output to monitor the present state of the range You cannot control the voltage range Current Range Control Input Status Output PLZ PLZ RANGE RANGE RANGE RANGE 164WL 334WL CONTO CONT 1 STATUSO STATUS 1 H 50A 100 A HIGH HIGH OFF OFF M 5A 10A HIGH LOW OFF ON L 0 5 A 1A LOW HIGH ON OFF 1 HIGH 5 V LOW 0 V 2 OFF OPEN ON SHORT Set the current range on the panel to the H range The current range cannot be changed when the load is turned on The control signal input received while the load is turned on is ignored Input for switching the range externally F3 V CONT 0 of the J1 connector use pin 15 or 16 as the common lt 10 11 lt The signal is 2 bit The control terminals are pulled up to the A COM meien internal circuits 5 V level by a resist
84. he voltage the current will not increase beyond point L If you increase the voltage overcurrent protection OCP is cleared The PLZ 4WL returns to constant voltage CV mode and the operating point moves along segment ML The load is turned off no current flows FORD ORE The PLZ 4WL stops operating as a load Point L The PLZ 4WL switches out of constant voltage CV mode LIMIT Overcurrent protection OCP continues and the PLZ 4WL operates as a constant current load PLZ 4WL eoece N QO Operating Area How constant current and constant voltage CC CV mode works On the PLZ 4WL you can add constant voltage CV mode to constant current CC mode Constant current and constant voltage mode operation When the PLZ 4WL is used in constant current and constant voltage mode CC CV it operates as a constant current load and a constant voltage load shunt regulator as shown in the figure below Operating as a constant current load the PLZ 4WL sinks the specified current 1 regardless of the output voltage VM of the constant voltage power supply When VM is greater than V the PLZ 4WL operates as a constant voltage load and keeps input voltage V constant even when the input current varies Current does not flow when VM is less than or equal to V The PLZ 4WL switches between the two modes automatically In the figure below R1 is the internal resistance of the constant voltage power supply In constant
85. ined by the minimum operating voltage the enclosed area is where specifications are guaranteed The specifications are guaranteed for input voltages greater than or equal to 0 3 V but the PLZ 4WL can be used at lower voltages actual operating area if the current is reduced However the specifications are not guaranteed The minimum operating voltage at which current begins to flow through the PLZ 4WL is approximately 50 mV If the input voltage is gradually increased from 0 V no current will flow until this minimum operating voltage is exceeded If the input voltage exceeds the minimum operating voltage and a current greater than or equal to 0 2 of the range rating greater than or equal to 0 2 of the H range when the PLZ 4WL is set using the M range starts flowing the current can keep flowing even when the voltage is reduced down to as low as approximately 20 mV For the operating areas of each model see Operating areas of each model H Range Operating Area of the PLZ 164WL Input voltage Input voltage Operating area where specifications are guaranteed Cn a aaa isy Operating area where specifications are guaranteed L4 Actual operating area 3 3 V 0 3 V Actual operating area 50 mV 0 1 A 5 5A 50A 0 50A Logarithmic scale Input current Input current Basic operation modes The following six operation modes are available on the PLZ 4WL e Constant current mode CC mode
86. ing point moves along segment QS The current is determined by the voltage and internal resistance of the battery Transition of the operating point overcurrent protection OCP Constant resistance line constant resistance settings RM1 RM2 and RT OCP activation point OPP setting Constant current line OCP setting Input voltage V Constant voltage line constant voltage setting Logarithmic scale IOCP IOCP1 Input current A When the overcurrent protection OCP setting IOCP is lower than the current produced by the activation of overpower protection OPP the voltage of the battery is VM In constant resistance CR mode if the resistance is decreased RM1 gt RM2 gt RT so that the input current load current increases the operating point moves along segment MT M1 gt M2 gt T When the overcurrent protection OCP setting is IOCP overcurrent protection OCP is activated when point T is reached At this point one of two types of operations occurs depending on the protection action setting for OCP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4W sinks current as a constant current load at point T Even if you attempt to decrease the resistance to increase the current the current will not increase beyond point T If you increase the resistance to decrease the current overcurrent protection OCP is cleared The PLZ 4WL returns to
87. ingle wire AWG26 to AWG18 Twisted wire AWG22 to AWG20 ezza yz a EZZ The stripped wire is The wire strands are touching the chassis touching the chassis Turn the POWER switch off h 2 Connect the sensing terminals to the DUT using sensing wires Connect the positive remote sensing terminal on the rear panel S to the positive terminal on the DUT In the same way connect the negative remote sensing terminal S on the rear panel to the negative terminal on the DUT Connect the wiring as close to the DUT as possible Enabling remote sensing To turn remote sensing on or off from the menu select 2 Configuration gt 4 Remote p 54 Sensing gt Sensing PLZ 4WL Basic Functions This chapter explains the operations for each operation mode and other basic functions Panel Operation Basics You can perform operations from the operation panel on the front of the PLZ 4WL The PLZ 4WL produces a beeping sound to notify you when you make an invalid selection or perform an invalid key operation Function of the LOAD key If you press LOAD when the load is turned off the LOAD LED lights and the load turns on If you press LOAD when the load is turned on the LOAD LED turns off and the load turns off How to use the rotary knob Coarse adjustment Use the rotary knob to set values such as the current and resistance Turning the rotary knob D4 Large arrow Clockwise increases
88. ings are applied PLZ 4WL Controlling Constant Resistance Mode CR Mode Externally Z CAUTION When you apply an external voltage of 0 V to 10 V to the PLZ 4WL the resistance varies in accordance with the voltage An external voltage of 0 V results in the maximum resistance An external voltage of 10 V results in the minimum resistance The precision of the PLZ 4WL cannot be guaranteed for voltages below 0 V or above 10 V Connected pins J1 1 signal J1 2 common To avoid damaging the PLZ 4WL observe the following precautions The maximum voltage that can be applied across pins 1 and 2 of the J1 connector is 11 V Do not apply a voltage that exceeds this value e Pin 2 of the J1 connector is connected the negative load input terminal Make sure that the wire of pin 2 does not touch any of the other pins Gm Rated conductance S Conductance OV 10V External voltage Ein 1 _ GmxEin Ro 10 EXT CONT MODE 4 lt 1 Gm Rated conductance _ Ein External voltage Approx 10 KQ a O0 lt Eins10V ACOM C Eip t Ro Operating resistance Twist PLZ 4WL To avoid noise interference use a highly stable low noise external voltage source and twisted signal wires 1 Turn the POWER switch off Connect the external voltage across pins 1 and 2 of the J1 connector Turn the POWER switch on and make sure that the load is off If you also want to control the current range externally be sure
89. ion Basics 26 Turning the Load On and Off 27 Turning the load on 27 Turning the load off 28 Operation Modes 29 Constant Current Mode CC mode 30 Configuring CC mode 30 Configuring CC CV mode 37 Constant Resistance Mode CR 32 Configuring CR mode 32 Configuring CR CV mode 33 Constant Voltage Mode CV mode 34 Configuring CV mode 34 Constant Power Mode CP mode 35 Configuring CP mode 35 Switching 36 Setting the switching level 36 Setting the switching interval 37 Turning the switching function on and off 37 Slew Rate 38 Setting procedure 38 Soft Start 39 Short 40 Turning the short function on and off 40 Locking the Keys 47 Switching from Remote Mode to Local Mode 42 Advanced Operations Memory Types 44 ABC Preset Memory 45 Saving settings to ABC preset memory 45 Recalling ABC preset memory entries 46 Setup Memory 47 Saving settings to setup memory 47 Recalling setup memory entries 48 Protection Functions 49 Protection function types 49 Clearing alarms 57 Response Speed 52 Elapsed Time Display and Auto Load Off Timer 53 Elapsed time display Count Time 53 Auto load off timer Cut Off Time 53 Menu 54 Factory Default Settings Initialization 56 sequences Sequence Function 58 Normal sequences and fast sequences 58 Common Sequence Editing Operations 59 How Normal Sequences Work 60 Editing Steps in a Normal Sequence 62 Adding steps 62 Editing steps 62 Deleting steps 63 Sequence Example Normal Seque
90. larm If an alarm occurs during calibration the PLZ 4WL produces an alarm sound and the load turns off After you remove the cause of the alarm and press ENTER the alarm sound stops and the PLZ 4WL returns to the Calibration screen Start calibration again from the calibration number at which the alarm occurred Preparation Before you calibrate the PLZ 4WL leave it on for 30 minutes or more to warm it up Warming up reduces measurement error caused by initial drift Keep the ambient temperature at 23 5 C Equipment used Name Required Accuracy Required Rating Measurement voltage DC voltmeter Within 0 02 range 0V to 35 V For 0 5 A1 For 1 A1 1 Shunt resistor 0 1 poe 2 For 10 A For 50 A1 For 100 A Regulated DC power supply Voltage 5 V constant voltage power Current 50 A1 supply 100 A Regulated DC power supply constant current power supply 1 PLZ164WL 2 PLZ334WL Voltage 35 V Current 0 5 A Connect the equipment as shown below Select an appropriate shunt resistor according to type of calibration that you are performing S Regulated DC Shuntresistor PLZ 4WL power supply Series S Voltmeter Voltmeter DVM DVM h V1 PLZ 4WL Maintenance CC Mode Calibration Calibration numbers 1 2 and 3 Perform calibration on the Low Mid and then High range For each item start calibration at step A
91. le of the range However for the M range it is the full scale of the H range Measurements Voltmeter Display H range 0 000 V to 30 000 V L range 0 0000 V to 4 0000 V Accuracy 0 1 of rdng 0 1 of f s Ammeter Display H range 0 000 A to 50 000 A 0 00 A to 100 00 A M range 0 000 A to 5 000 A 0 000 A to 10 000 A L range 0 00 mA to 500 00 mA 0 0000 A to 1 0000 A Accuracy 0 2 of rdng 0 3 of f s Wattmeter Display H range M range 0 00 W to 165 00 W 0 00 W to 330 00 W L range 0 000 W to 15 000 W 0 000 W to 30 000 W L range 0 0000 W to 1 6500 W 0 0000 W to 3 3000 W 1 Displays the product of the voltmeter reading and ammeter reading 2 In a mode other the CP mode 3 In CP mode e e 110 PLZ 4WL 2 Specifications Switching mode Slew rate Operation modes CC and CR Duty cycle 5 to 95 in 1 steps Frequency range 1 Hz to 50 kHz Frequency 1Hzto 10 Hz 0 1 Hz resolution 10 Hz to 100 Hz THz 100 Hz to 1 kHz 10 Hz 1 kHz to 50 kHz 100 Hz Frequency accuracy of setting 0 5 of set 1 The minimum time width is 10 us Between 5 kHz and 50 kHz the maximum duty cycle is limited by the minimum time width PLZ 4WL Setting range H range 2 5 mA us to 25 A us 5 mA us to 50 A us M range 250 A us to 2 5 A us 500 yA us to 5 A us L range 25 pA us to 25
92. ly 3 3 V Set the power supply current to approximately 2 to 5 of the load device s rated current Press ENTER The load turns on automatically and the offset calibration CC Low Offset Adjustment screen appears PLZ 4WL CC Mode Calibration Calibration numbers 1 2 and 3 CC Low MA Offset Adjustment The current calibration value DAC REF hexadecimal oi Cursor MON PREV Indicates that the values are hexadecimal 7 Press 4 or gt to set the cursor position of DAC REF and then turn the rotary knob so that the current flowing through the shunt resistor is within 40 1 of the value corresponding to 10 of the full scale value see the table of CC mode settings The measured value offset MON is set automatically E Step B Calibrate the offset value for the internal reference voltage for the protection functions 8 Press ENTER The offset calibration screen CC Low Limit Offs Adjust appears 9 Press 4 or gt to set the cursor position of DAC LIM and then turn the 6 rotary knob so that the current flowing through the shunt resistor is within 0 1 of the value corresponding to 10 of the full scale value see the table of CC mode settings Press ENTER The load turns off automatically Maintenance E Step C Calibrate the gain values of the internal reference voltage for current settings and of the measured values 1 1 Connect a shunt resistor that matches the value corresponding
93. m Creation Table For normal sequence Program name Date By Program number 1 to 10 Memo Up to 11 characters Operation mode CC CR CV CP Range Current A Voltage V A v Loop 1 to 9999 Last Load OFF ON OFF ON Last Set Chain OFF 1 to 10 Step number Setting mA mS V W Execution time h min s ms LOAD RAMP TRIG PAUSE Note oO CO NI oO A WwW N oO N wo A oi Oo N oe N PLZ 4WL Entry example Sequence Program Creation Table Program name Example sequence of chapter 6 PLZ164W Date By Program number 1 1 to 10 Memo Program1 Up to 11 characters Operation mode CC Range 50 A 30 V Current A Voltage V Loop 1 to 9999 0001 Last Load OFF ON OFF Last Set 0 Chain OFF 1 to 10 2 Step number m Rea W aa LOAD RAMP TRIG PAUSE Note 1 7A 200 s ON ON OFF OFF 2 7A 150 s ON OFF OFF OFF 3 0 5 A 80 s OFF OFF OFF OFF Program name Example sequence of chapter 6 PLZ164W Date By Program number 2 1 to 10 Memo Program2 Up to 11 characters Operation mode CC Ran
94. m settings press NEXT SHIFT gt to configure the step settings You can specify one execution condition current and trigger output per step One step corresponds to one executed operation in the executed waveform The minimum number of steps in a fast sequence is 3 Even if you only specify settings for step 1 and step 2 when you execute a fast sequence a step 3 will also be executed Editing steps The number of steps that can be monitored is determined by the RPTSTEP setting last step that you specified when you edited the program Configure the following step settings in the monitor screen Current Step number 10 00A_STEP 0014 Tri tput rigger outpu Waveform display Magnification Monitor screen Item Setting Description STEP 1 to 1024 Step number Current or conductance 0 to 100 of the range The current or conductance that is produced at the step Trigger output _ Off The trigger signal during step execution T On Each time you press W the cursor moves between items in this order step number current trigger output setting and then magnification Each time you press A the cursor moves between items in this order magnification trigger output setting current and then step number You can use the FILL function to set multiple steps at once E Trigger output TRIG Use this setting to specify whether or not to produce a trigger signal If you set TRIG to ON the TRIG OUT terminal
95. n describes the sequence editing operations that are common to all edit screens such as moving the cursor within an edit screen selecting items entering values and characters and turning pages Please familiarize yourself with the functions of each key E Moving the cursor On the edit screen you can change the value of the item at the position of the blinking cursor You can move the cursor using the A W lt q gt keys Pressing W moves the cursor down and pressing A moves the cursor up To move to a specific digit in a value or character in a string or to select a step execution pattern item press lt q and gt to move the cursor to the left and right E Selecting items When an item has multiple choices to select from turn the rotary knob to select the desired setting For example for items that can be turned on and off you can turn the rotary knob clockwise to select ON and counterclockwise to select OFF E Entering values You can increase or decrease the value of a numerical setting by turning the rotary knob If the value consists of many digits you can press lt or to move the cursor directly to the desired digit and increase or decrease only that digit For example if you want to set a value to 100 you can simply move the cursor to the hundreds digit and enter 1 using the rotary knob E Entering characters Memo You can register a memo of up to 11 characters in length for each program You can use memos to indica
96. n input current of 100 of the specified range The p recision of the PLZ 4WL cannot be guaranteed for voltages below 0 V or above 10 V Connected pins J1 1 signal J1 2 common A CAUTION To avoid damaging the PLZ 4WL observe the following precautions The maximum voltage that can be applied across pins 1 and 2 of the J1 connector is 11 V Do not apply a voltage that exceeds this value wire Pin 2 of the J1 connector is connected the negative load input terminal Make sure that the of pin 2 does not touch any of the other pins 2 2 3 Im Rated current 2 _ 10V External voltage Ein ioe en EXT CONT MODE t 10 lt 1 Approx 10 kQ he lo Input current Acom Ein Im Rated current Ein External voltage Twist 0 lt Ein lt 10 V To avoid noise interference use a highly stable low noise external voltage source and twisted signal wires o1 A GP Turn the POWER switch off Connect the external voltage across pins 1 and 2 of the J1 connector Turn the POWER switch on and make sure that the load is off Set the operation mode and the current range If you also want to control the current range externally be sure to set the range to H From the menu select 2 Configuration gt 3 External gt Control CC CR CP gt ON Doing so enables the external control of CC CR and CP mode Turn the power switch off and then on again The menu sett
97. nce 64 Editing program 1 65 Setting the steps of program 1 66 Editing program 2 68 Setting the steps of program 2 69 How Fast Sequences Work 70 Editing steps 72 Sequence Example Fast Sequence 74 Editing program 11 75 Setting the steps of program 11 76 Executing Pausing and Stopping Sequences 77 Executing sequences 77 Pausing a sequence 77 Stopping a sequence 78 When sequences cannot be executed 78 5 External Control External Control 80 About the J1 connector 87 J1 connector pin arrangement 82 Precautions for high speed load simulations 83 Superimposing Constant Current Mode CC Mode 88 Turning the Load On and Off through External Control 89 Signal Input for turning the load on and off 89 Load on status signal output 90 Using a Trigger Signal to Control the PLZ 4WL 91 Controlling the Current Range Externally 92 Input for switching the range externally 92 Range status output 92 Alarm Signal 93 Alarm input 93 Alarm release input 93 Alarm status output 93 Monitor Signal Output 94 Trigger signal output 94 Current monitor output 94 Maintenance Inspection 96 Internal inspection 97 Backup battery replacement 97 Calibration 98 What gets calibrated 98 Preparation 99 CC Mode Calibration Calibration numbers 1 2 and 3 100 CV Mode Calibration Calibration numbers 4 and 5 102 Ending Calibration 104 Troubleshooting 105 7 Specifications Ratings 108 Constant current CC mode 108 Con
98. ncrease the current it will not increase beyond point N If you decrease the current overpower protection OPP is cleared The PLZ 4WL returns to constant current CC mode and the operating point moves along segment MN Point N The load is turned off no current flows EOADORE The PLZ 4WL stops operating as a load The PLZ 4WL switches out of constant current CC mode LIMIT Overpower protection OPP continues and the PLZ 4WL operates as a constant power load If the overpower protection OPP setting is PN1 because overpower protection OPP is not activated as the current is increased the operating point reaches point S At point S the PLZ 4WL switches to constant voltage CV mode The voltage is fixed at the user specified voltage VQ The operating point moves along segment QS The current is determined by the voltage and internal resistance of the battery 127 Operating Area How constant resistance and constant voltage CR CV mode works On the PLZ 4WL you can add constant voltage CV mode to constant resistance CR mode Constant resistance and constant voltage mode operation When the PLZ 4WL is used in constant resistance and constant voltage mode CR CV it operates as a constant resistive load and a constant voltage load shunt regulator as shown in the figure below When the PLZ 4WL operates as a constant resistive load and the voltage VM of the constant voltage power supply
99. nless you press LOAD after turning on the POWER switch To start the PLZ 4WL with the load turned on from the menu select 2 Configuration gt 2 Power On gt Load On gt ON Turn the power switch off and then on again to enable the settings E Displaying the time that has elapsed since the load was turned on This function which displays the time that has elapsed since the load was turned on is useful when used in conjunction with undervoltage protection UVP in discharge tests of batteries and capacitors By factory default the time is not displayed To display the time from load on to load off from the menu select 1 Setup gt 1 Function gt Count Time gt ON Turn the power switch off and then on again to enable the settings E Using an external control signal to turn the load on and off You can turn the load on and off using external control signals from a relay or other device E Gradually raising the PLZ 4WL s input current In constant current mode CC mode you can set the PLZ 4WL to raise its input current gradually soft start Basic Functions 27 28 Turning the Load On and Off Turning the load off 1 Press LOAD to turn off the load 2 Turn off the output of the DUT If you are using a relay electromagnetic switch or other device in the connection between the load input terminals and the output terminals of the DUT turn the device off E
100. nstant Resistance Mode CR In constant resistance mode CR mode you set the inverse of the resistance the conductance S You can also display the resistance value converted from the conductance value Conductance S 1 resistance Q You can also add constant voltage mode CV mode to constant resistance mode CR mode Configuring CR mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition Select the operation mode and set the conductance LOAD MODE SET VSET RANGE LOAD O VRANGE SHIFT O 1 Make sure that the load is off The load is off when the LED to the upper left of the LOAD key is off If the LED is lit press LOAD to turn the load off 2 Press MODE to select the operation mode CR The operation mode popup menu appears Press MODE repetitively until CR is highlighted on the menu After you select the operation mode the popup menu disappears and CR appears on the display 3 Press RANGE to select the current range The current range popup menu appears Each time you press RANGE the range switches between L M and H Press RANGE until the range that you want to select is highlighted After you select a range the popup menu disappears and the range that you selected appears along with its full scale value The full scale value varies depending on the model 4 Press VRANGE SHIFT RANGE to select the voltage range The voltage
101. nt In case the unit is disassembled from the rack mount it is recommended that all the removed parts are kept in the storage Once the unit is disassembled from the rack mount please attach all the removed parts to original location of each part Removing the handle and feet j Cover gt Bracket M4 flat head screw t M4 x 0 7 x 8 1 Handle s Foot 5 l es 4 sz t Screw pin Pull up on the handle cover two locations N i Unfasten the M4 flat head screws two locations and remove the entire handle While pulling down on the feet there are four of them use a screwdriver to loosen their screw pins and then remove them PLZ 4WL Installation and Preparation 13 14 Connecting the Power Cord WARNING To avoid electric shock observe the following precautions e This product is IEC Safety Class equipment equipment with a protective conductor terminal Be sure to earth ground the product to prevent electric shock e Connect the protective conductor terminal to earth ground NOTE e Use the supplied power cord to connect to an AC power line If the supplied power cord cannot be used because the rated voltage or the plug shape is incompatible have a qualified engineer replace it with an appropriate power cord that is 3 m or less in length If obtaining an appropriate power cord is difficult consult your Kikusui agent or distributor e A power cord with a plug c
102. ntrol the current range externally be sure to set the range to H From the menu select 2 Configuration gt 3 External gt ADD CC gt ON Doing so enables the modification of CC mode through external control or A GP Turn the power switch off and then on again The menu settings are applied PLZ 4WL Turning the Load On and Off through External Control You can use an external control signal to turn the load on and off and you can check whether the load is on or off Signal Input for turning the load on and off PLZ 4WL To turn the load on and off using an external contact you need to apply an external signal across pin 9 and 15 or 9 and 16 of the J1 connector When you turn the load off through an external contact the LOAD key on the front panel becomes invalid You can select the logic LOW or HIGH to use to turn the load on and off using the menu setup Select 2 Configuration gt 3 External gt Load On Input Turn the power switch off and then on again to enable the settings If you are not going to control the output using an external contact set the logic to HIGH the default setting Example when the load is turned on by a high level signal from the external contact External H contact On L Off v vvv 1 I li I 1 I 1 I l l i l road on j off 1 rod 1 The LOAD key is invalid The LOAD has been For the external c
103. ode CR mode Constant power mode CP mode Constant voltage mode CV mode aR U N Constant current and constant voltage mode CC CV mode 6 Constant resistance and constant voltage mode CR CV mode Here we will explain the simplest of the six modes constant current CC mode E Constant Current Mode Operation In constant current CC mode the PLZ 4WL operates as a constant current load The PLZ 4WL sinks the specified current I regardless of the output voltage V1 of the constant voltage power supply V1 Constant voltage 7 power supply vV PLZ 4WL Series Voltage V The current is constant even when the voltage varies 0 1 Current CC setting Operating Areas of the PLZ 4WL As shown in the figure the PLZ 4WL can be used within the area enclosed by the constant voltage line defined by the rated voltage the constant power line defined by the rated power the constant current line defined by the rated current and the constant voltage line defined by the minimum operating voltage the enclosed area is where specifications are guaranteed The specifications are not guaranteed for input voltages below 0 3 V the values in the actual operating area The minimum operating voltage at which current begins to flow through the PLZ 4WL is approximately 50 mV If the input voltage is gradually increased from 0 V no current will flow until this minimum operating voltage is exceeded If the
104. offset and gain values During operation the relationships between the current and voltage settings and the actual current and voltage values are determined by the calibrated straight line Reference Range s F S Range s 1 10F S Ofst Gain Offset Gain calibration calibration Calibrated items The following eight items are calibrated for the three voltage ranges and the two current ranges 1 The offset value of the internal reference voltage for current settings The gain value of the internal reference voltage for current settings The offset value of the internal reference voltage for voltage settings The gain value of the internal reference voltage for voltage settings The offset value for measured values The gain value for measured values The offset value of the internal reference voltage for the protection function settings AN OA FW ND The gain value of the internal reference voltage for the protection function settings The offset values of the internal reference voltages for the settings and of the measured values are calibrated simultaneously The same is true for the gain values When you press ENTER or NEXT SHIFT P in the gain calibration screen the calibration data is written to the internal memory PLZ 4WL Calibration E Calibration numbers The numbers that appear in the calibration screen are the calibration numbers Calibration Calibration number A
105. oint overpower protection OPP In this example we will assume that the PLZ 4WL is being used in constant voltage CV mode to test the load characteristic of a constant voltage power supply Operating area Constant power line OPP setting OPP activation point NES Constant voltage line constant voltage setting Logarithmic scale IN IOCP Input current A When the overcurrent protection OCP setting IOCP is greater than current IN at point N the voltage of the constant voltage power supply is VM Current will not flow if the PLZ 4WL voltage VMO is greater than VM If the voltage of the PLZ 4WL is decreased so that VMO is less than VM current starts flowing If the voltage is decreased further VM1 gt VM2 gt VN so that the input current load current increases the operating point moves along segment MN M1 gt M2 gt N When point N is reached overpower protection OPP is activated At this point one of two types of operations occurs depending on the protection action setting for OPP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4WL sinks current as a constant power load at point N Even if you attempt to decrease the voltage the current will not increase beyond point N If you increase the voltage overpower protection OPP is cleared The PLZ 4WL returns to constant voltage CV mode and the operating point moves along segment MN e 124
106. oltage 6 A COM Connected to the negative load input terminal 7 IMON Current monitor output 10 V for full scale H L range 1 V for full scale M range 8 A COM Connected to the negative load input terminal 9 LOAD ON OFF CONT The load is turned on by a low or high CMOS level signal The logic levels can be switched The internal circuit is pulled up to 5 V by a 10 kQ resistor 10 RANGE CONT 1 Input for switching the range externally The internal circuit is pulled up to 5 V by a 10 11 RANGE CONT 0 KQO resistor Valid only when the front panel setting is H range 12 ALARM INPUT The alarm is activated by a low CMOS level signal The internal circuit is pulled up to 5 V by a 10 kQ resistor 13 TRIG INPUT Unpauses the PLZ 4WL if a low CMOS level signal is applied for 10 us or more The internal circuit is pulled up to 5 V by a 10 kQ resistor 14 ALARM CLEAR INPUT The alarm is cleared by a low CMOS level signal The internal circuit is pulled up to 5 V by a 10 kQ resistor 15 A COM Connected to the negative load input terminal 16 A COM Connected to the negative load input terminal 17 LOAD ON STATUS Turns on when the load is on Open collector output by a photocoupler 18 RANGE STATUS 1 Range status output Open collector output by a photocoupler 19 RANGE STATUS 0 20 ALARM STATUS Turns on when a protection function OVP OCP OPP OHP REV or UVP is activated or when an external alarm is applied Open collector output by a photoco
107. ontact Even if the LOAD key is turned on by the to turn the load on again pressed the load will external contact so the load must first be not turn on the load key is valid turned off once External Contact Load On Input ON closed OFF open LOW Load on Load off HIGH Load off Load on Approx 10 kQ 5V J1 LOAD ON OFF CONT 15 16 lt Di A COM ole V The input pin is pulled up to the internal circuits 5 V level by a resistor that is approximately 10 kQ The maximum allowable voltage is 5 V The logic threshold levels are CMOS V indicates that the LOAD key has been pressed External Control o 89 Turning the Load On and Off through External Control Load on status signal output To monitor the status on or off of the load externally monitor the output signal across pins 17 and 22 of the J1 connector Ji Maximum applied voltage 30 V 17 lt Maximum current 8 mA L 95 lt Load on Load off Photocoupler On Off Photocoupler P C PLZ 4WL Using a Trigger Signal to Control the PLZ 4WL The application of a trigger signal during sequence execution unpauses the PLZ 4WL Use a trigger signal when you want to synchronize the PLZ 4WL with an external device Trigger signal input Apply a voltage signal with a maximum allowable voltage of 5 V and a pulse width of 10 us or more across pins 13 and 15 or 13 and 16 of the J1 connector T
108. op 0 06 23 T 3 aa 0 000 C ae 13 DOi mas L3 ELECTRONIC LOAD KIKUSU PLZ334WL o2 a0v 0100A COARSE FINE CURSOR sQ 1io lt Se Ist had La _ LOCAL No Name LOAD lt LOCK 23 24 25 26 27 22 21 20 19 18 17 KU U ELECTRONIC LOAD KI Ul PLZ334WL _o s 30v 000A COARSE FINE i CURSOR sQ E MODE SET VSET RANGE SLEWRATE OPP OCP RECALL ENTER LOAD ORT__UVP__STORE ABC Q SCV MENU VRANGI ENON FREQ OUTY LEVEL SHIFT Q Q Q 6000 EDIT _RUN STOP PAUSE switcHiNa PRESET SEG Function p 15 1 POWER switch Flip the switch to the side to turn the power on Flip it to the side to turn the power off 2 REMOTE Connector for expanding functions 3 TRIG OUT Produces a pulse signal during sequence or switching operation p 94 4 MON OUT An output terminal for monitoring the current p 94 5 Remote sensing Terminals for connecting remote sensing wires p 24 terminals 6 DC INPUT The load input terminals for connecting the DUT and the PLZ 4WL p 17 7 Chassis terminal A terminal connected to the chassis p 17 8 Air inlet An air inlet for cooling It has a dust filter 9 Handle A handle for carrying the PLZ 4WL 10 Rotary knob Used to make selections and change settings p 26 PLZ 4WL
109. or conductance 37 Short icon Appears when the short function is being used p 40 38 Multi display Displays settings other than the fundamental setting When a value can be set it is underlined and the item name is highlighted 39 Set operation mode Displays the set operation mode PLZ 4WL 10 Rear Panel SH1 AH1 T6 L4 SR1 RL1 PPO DC1 DT1 CO E1 RS232C Ast KIKUSUI ELECTRONICS C RP 7 WARNING 20 NOT REMOVE COVERS EURODE HAVAL TAIT EEA NO OPERATOR SERVICEABLE PARTS WMO sRIdMHABOIY EAYUICSELT INSIDE REFER SERVICING TO QUALIFIED lt f amp l SERVICE PERSONNEL ESRI FRUAMRODYRU BES Be UNPLUG THE MAINS SUPPLY CORD BEFORE Fo7 iRLY TA SITS TCHS HANDLING THE CORD OR LOAD WIRES MADE IN JAPAN r le AAC INPUT 4 3 2 1 No Name Function 1 Air outlet Vent for cooling the PLZ 4WL 2 AC INPUT Power inlet p 14 3 USB USB port for controlling the PLZ 4WL remotely 4 RS232C RS232C port for controlling the PLZ 4WL remotely 5 GPIB GPIB cable connector for controlling the PLZ 4WL remotely 6 J1 connector External control connector p 80 7 Serial number The serial number of the PLZ 4WL PLZ 4WL Installation and Preparation This chapter describes how to unpack and prepare this product before you use it Checking the Package Contents When you receive the product check that all accessories are included and that th
110. or that is Use pins 10 RANGE CONT 1 and 11 RANGE Approx 10 kO J1 approximately 10 kQ The maximum allowable voltage is 5 V The logic threshold levels are CMOS Range status output 19 RANGE STATUS 0 of the J1 connector pin 22 is common 18 19 lt G K The signal is 2 bit lt 22 lt Photocoupler P C Maximum applied voltage 30 V Maximum current 8 mA Use pins 18 RANGE STATUS 1 and J1 92 PLZ 4WL Alarm Signal You can use an external control signal to activate the PLZ 4WL s alarm You can also use the alarm status output to monitor the alarm status whether or not it is activated Alarm input 5 V Approx 10 Ko lt pit 12 lt A COM Alarm release input 15 16 lt E Apply an external signal to pins 12 and 15 or 12 and 16 of the J1 connector The alarm is activated by a low level signal The alarm input terminals are pulled up to the internal circuits 5 V level by a resistor that is approximately 10 kQ The maximum allowable voltage is 5 V The logic threshold levels are CMOS Apply an external signal to pins 14 and 15 or 14 and 16 of the J1 connector 5 V Approx 10 KQ I lt 14 lt eco oe lt V 100 ms or greater 5V Lf OV Input a signal with a pulse width of 100 ms or greater After an alarm has occurred a low level signal applied after the reason for the alarm has been eliminated releases the al
111. ormal Sequence PLZ 4WL a Editing Programs in a Normal Sequence PLZ 4WL To configure a program select one of four operation modes CC CR CV or CP You can execute the same program repeatedly You can also continue program execution by linking a program to another program Linked programs can only be executed if they have the same operation mode and range You can save up to 10 programs No 1 to 10 Press EDIT SHIFT A to display a screen for configuring the programs in the sequence In the top screen if you press W when the cursor is at Loop the bottom screen appears In the bottom screen if you press A when the cursor is at Last Load the top screen appears SEQ Last Load ON a Last Set 0 000A Chain 2 Top Bottom Sequences A In the screens for configuring the programs in the sequence you can configure the following items After you finish configuring the program settings press NEXT SHIFT to configure the step settings Item Setting Description No 1 to 10 Program number 11 is for the fast sequence Memo Up to 11 characters A memo Mode NCC CC mode The program operation mode NCR CR mode NCV CV mode NCP CP mode Range PLZ164WL The program current and voltage ranges 50 A 30 V 5 A 30 V 500 mA 30 V 50 A 4 V 5 A 4 V 500 mA 4 V PLZ334WL 100 A 30 V 10 A 30 V 1 A 30 V 100 A 4 V 10 A 4 V 1 A 4 V Loop 1 to 9998 The number of times that the program will repeat 99
112. ot be stored PLZ 4WL ee Load wiring PLZ 4WL VANTIN Z CAUTION Improper use of load wires may lead to fire Use load wires whose capacity is adequate for the PLZ 4WL s rated output current e Possible electric shock Use load wires whose rated voltage meets or exceeds the PLZ 4WL s isolation voltage For details on the PLZ 4WL s isolation voltage see Chap 7 General specifications Use a load wire with sufficient diameter for the current as well as non flammable or flame resistant cover Installation and Preparation If the wiring that you use for the load has a high resistance the voltage will drop significantly when current flows and the voltage at the load input terminals may fall below the minimum operating voltage Using the following table as a reference select wiring whose nominal cross sectional area is as thick as possible A wire s temperature is determined by the resistive loss based on the current the ambient temperature and the wire s external thermal resistance The following table shows the current capacity of heat resistant vinyl wires that have a maximum allowable temperature of 60 C when one of the wires is separated and stretched out horizontally in air in an ambient temperature of 30 C The current must be reduced under certain conditions such as when vinyl wires that have a low heat resistance are used when the ambient temperature is 30 C or greater or when wir
113. ped with GPIB RS232C and USB interfaces It can be easily incorporated into a wide range of test and inspection systems When the interfaces are used with the sequence function a variety of systems can be created What Is an Electronic Load To measure the characteristics of power sources and other devices that produce energy a load is required to consume the energy A variable resistor can be used as a simple load A device in which semiconductor devices such as transistors are used instead of a variable resistor is referred to as an electronic load Using semiconductor components an electronic load can change the current and voltage freely so when it is used with a control circuit it can function as a variety of different types of loads Electronic loads can be used as loads for different types of circuits for switching power supplies and other types of DC power supplies for testing the characteristics and lifespans of primary and secondary batteries and for aging You can use the sequence function to create programs that simulate real load conditions and use these programs to produce varying loads in tests on devices such as power supplies for printers There are AC electronic loads and DC electronic loads The PLZ 4WL is a DC electronic load for use with DC circuits Basic Operation Modes The following six operation modes are available on the PLZ AWL Constant current mode CC mode Constant resistance m
114. play Count Time Tcutoff Auto load off timer Cut Off Time y s gt 0 Tcutoff Tcount Time Advanced Operations Elapsed time display Count Time UVP 0 20 03 C sLEWRATE 2 500 Alus You can measure the time from when the load is turned on until when it is turned off As a condition for turning the load off set the undervoltage protection activation voltage to the cutoff voltage When the load turns off a popup window appears indicating the time from load on to load off By default the elapsed time after the load is turned on is not displayed To set whether or not to display the elapsed time ON or OFF from the menu select 1 Setup gt 1 Function gt Count time Auto load off timer Cut Off Time VOLTAGE 1 644 V c sLEWRATE 2 500 Alus In voltage measurement the voltage immediately before the load turns off is measured You can configure the PLZ 4WL to turn the load off after a specified amount of time has elapsed After the load turns off a popup window appears indicating the input voltage immediately before the load was turned off The auto load off timer is disabled by default To set the auto load off timer OFF 000 00 01 to 999 59 59 from the menu select 1 Setup gt 4 Cut Off 53 PLZ 4WL 54 Menu Memo Press MENU SHIFT SET VSET to exit the menu Press PREV SHIFT q to return to the previous screen In
115. ply after the sequence ends select 0 A 4 5 6 7 8 g Press w to move the cursor to Chain and set it to OFF To end the sequence after program 2 is executed twice select OFF 0 Press NEXT SHIFT p or ENTER The step value screen appears PLZ 4WL Sequence Example Normal Sequence Setting the steps of program 2 Memo You can move the cursor by pressing A V q and gt Press NEXT SHIFT P to move to the next screen Press PREV SHIFT to return to the previous screen PLZ 4WL The settings will be configured in the same order as they were for program 1 001 002 003 0 02 PREV i TOTAL 003 NEXT himin s ms TOTAL 003 NEXT LOAD RAMP TRIG PAUSE ON ON_ OFF OFF ON OFF OFF OFF ON ON OFF OFF END TOTAL 003 Set the currents for steps 1 to 3 Set the current for step 1 to 10 A for step 2 to 5 A and for step 3 to 8A Set the execution times for steps 1 to 3 Set the execution time for step 1 to 3 min 20 s for step 2 to 50 s and for step 3 to 2 min 30 s Set the execution patterns for steps 1 to 3 For step 1 set LOAD to ON RAMP to ON TRIG to OFF and PAUSE to OFF For step 2 set LOAD to ON RAMP to OFF TRIG to OFF and PAUSE to OFF For step 3 set LOAD to ON RAMP to ON TRIG to OFF and PAUSE to OFF All the settings for program 2 have been entered Press PREV SHIFT four times to exit the sequence editing screen Each time you press
116. possible in the L range of the PLZ164WL Operability The PLZ 4WL employs a large LCD Measured values of voltage current and power at the load input terminals are indicated at all times The values are indicated using larger characters than other sections to improve visibility Coarse and fine adjustments using the rotary knob are useful for setting values over a wide range The easy to use memory function enables repetitive tests Sequence function User defined sequence patterns can be saved to the internal memory Up to 10 normal sequence programs and 1 fast sequence program can be saved Normal sequences can contain up to 256 steps and the fast sequence can contain up to 1024 steps You can edit sequences easily from the large LCD Functions that are useful for battery discharge testing You can measure the time from when the load is turned on until when it is turned off You can measure the time from the start of battery discharge to the cutoff voltage time measurement by using this function in conjunction with undervoltage protection UVP In voltage measurement the voltage immediately before the load turns off is measured If you use the timer so that the load turns off after a specified amount of time you can measure the closed circuit voltage after a specified time has elapsed since the start of battery discharge voltage measurement Standard equipped GPIB RS232C and USB interfaces The PLZ 4WL comes standard equip
117. pup menu disappears and the range that you selected appears along with its full scale value The full scale value varies depending on the model Press VRANGE SHIFT RANGE to select the voltage range The voltage range popup menu appears Each time you press VRANGE SHIFT RANGE the voltage range switches between 4 V and 30 V After you select a voltage range it appears on the display Press VRANGE SHIFT RANGE until the range that you want to select is highlighted Check that the display is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition Turn the rotary knob to set the voltage The CV mode settings are complete When you press LOAD the LOAD LED lights and the PLZ 4WL starts supplying current You can change the voltage even when the load is on PLZ 4WL D Constant Power Mode CP mode In constant power mode CP mode you set the power W Configuring CP mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition PLZ 4WL Select the operation mode and set the power LOAD MODE RANGE LOAD O VRANGE SHIFT O 1 Make sure that the load is off The load is off when the LED to the upper left of the LOAD key is off If the LED is lit press LOAD to turn the load off 2 Press MODE to select the operation mode CP The operation mode popup menu appears Pres
118. put for the short function PLZ 4WL External Control About the J1 connector A protective socket is attached to the J1 connector when the PLZ 4WL is in the factory default state Keep the protective socket in a safe place so that you can attach it to the J1 connector when the connector is not in use If the protective socket is damaged or lost contact your Kikusui agent or distributor Protective socket for J1 84 49 0110 Possible electric shock The J1 connector contains pins that have the same potential as the output terminal When the J1 connector is not in use be sure to attach the protective socket that comes with the PLZ 4WL PAN GNX Be sure to turn off the PLZ 4WL s power switch before you attach or remove connectors When you remove a connector first release the lock lever on each side of the connector and then pull from the connector The connector parts needed to connect the J1 connector standard MIL 26 pin connector are not provided The recommended connectors are shown in the following table Manufacturer Product Notes Omron XG5M 2632 or XG5M 2635 For discrete wires XG5S 1301 2 pcs Omron XG4M 2630 XG4T 2604 For flat cables KEL 6200 026 601 For flat cables For information about how to use these tools and components see the OMRON Corporation or KEL Corporation catalogs When using a flat cable be sure to use a connector with a strain relief To press fit discrete wires or flat
119. quence are automatically changed to match the current settings Before Sequence Execution Sequence Execution Load on off state Mode and range settings Execution Mode and range settings that are of the sequence that you executed are trying to execute Load on Match the current settings Possible Same as the current settings Do not match the current Not possible settings 4 Load off Match the current settings Possible Same as the current settings Do not match the current Possible Automatically changed to the settings current settings PLZ 4WL External Control This chapter explains external control 80 External Control The settings in each operation mode normally use the internal reference signal In external control the reference signal is supplied externally It is a voltage signal analog voltage control In addition digital control such as the turning on and off of the load can be performed and signals that indicate the status can be produced The J1 connector is used for external control Analog Voltage Control CC CP CR and CV mode values Current to superimpose on the CC mode current Digital Control Turning the load on and off and monitoring its status Range control for each operation mode Unpausing during sequence operation Forced alarm generation Alarm clearing Signal Output Load on off status signals Range monitoring for each operation mode Input current monitoring Relay contact out
120. range popup menu appears Each time you press VRANGE SHIFT RANGE the voltage range switches between 4 V and 30 V Press VRANGE SHIFT RANGE until the range that you want to select is highlighted After you select a voltage range it appears on the display 5 Check that the display is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition The resistance value converted from the conductance value appears in the multi display If a different value appears in the multi display press SET VSET to display the resistance PLZ 4WL Constant Resistance Mode CR 6 Turn the rotary knob to set the conductance The CR mode settings are complete When you press LOAD the LOAD LED lights and the PLZ 4WL starts supplying current You can change the conductance even when the load is on Configuring CR CV mode Memo When SET is highlighted the PLZ 4WL is in the fundamental setting entry condition PLZ 4WL CR CV mode is constant resistance mode CR mode with CV mode added to it You can add CV mode even while the load is on LOAD MODE SET VSET RANGE LOAD O CV VRANGE SHIFT O 1 Configure the constant resistance settings To configure the settings refer to Configuring CR mode Press CV SHIFT MODE to add CV mode The PLZ 4WL switches to CR CV mode and CR CV appears on the display 3 Make sure that the PL
121. s Common specifications Analog External Control J1 connector Load on off control input Turn on the load with a high or low CMOS level signal Load on status output On when the load is on open collector output from a photocoupler Range switch input Switch ranges L M and H using a 2 bit signal Range status output Outputs range L M or H using a 2 bit signal open collector output from a photocoupler Trigger input Clear the sequence operation pause with a high CMOS level signal whose duration is 10 us or longer Alarm input Activate the alarm with a low CMOS level signal Alarm release input Release the alarm with a low CMOS level signal Alarm status output On when OVP OCP OPP OHP UVP or REV is activated or when an external alarm input is applied open collector output from a photocoupler Short signal output Relay contact output 30 Vdc 1 A External voltage control CC CR Voltages in the range of 0 V to 10 V correspond to 0 to 100 of the rated and CP mode current CC mode or rated power CP mode Voltages in the range of 0 V to 10 V correspond to the range of resistance values from the maximum resistance value to the minimum resistance value CR mode External voltage control CV Voltages in the range of 0 V to 10 V correspond to the range of voltages mode from 0 of the rated voltage to 100 of the rated voltage External voltage control Superimpose the current on the
122. s and the HIGH time can be set Pressing Th TL SHIFT FREQ DUTY switches between Th and TL 2 Turn the rotary knob to set the HIGH time 3 Press Th TL SHIFT FREQ DUTY to highlight TL The Th TL key lights and the LOW time can be set 4 Turn the rotary knob to set the LOW time Turning the switching function on and off PLZ 4WL After you finish setting the switching level and the switching interval turn on the switching function If you press SW ON when the switching function is off the switching function will turn on and the SW ON key will light If you press SW ON when the switching function is on the switching function will turn off and the SW ON key light will also turn off Basic Functions 37 38 Slew Rate You can use the slew rate to set the speed at which the current is changed The slew rate is valid in constant current mode CC mode Use the slew rate when you are using the switching function and at other times when the current is being changed dramatically You can set the slew rate according to the current range as an amount of current change per unit of time Setting procedure LOAD SLEW RATE Press SLEW RATE The SLEW RATE key lights 2 Turn the rotary knob to set the slew rate PLZ 4WL Soft Start PLZ 4WL You can use the soft start function to raise the input current gradually The soft start function is valid in constant current mode CC mode Soft s
123. s ENTER to exit the sequence execution screen If a step s PAUSE setting has been set to ON the sequence operation will pause after the step has been executed To resume operation press PAUSE SHIFT C Pausing a sequence 0200808080880 8888HH88HHHHHHHHHHHHHHHHHHHHOHHHHOHHHHHHHOHHHHHEH8HH888EEES8S If you press PAUSE SHIFT C while a sequence is being executed the sequence pauses and the PAUSE screen appears To resume the sequence press PAUSE SHIFT C again If you press RUN STOP SHIFT B while the sequence is paused the sequence will stop PLZ 4WL Sequences A 77 78 Executing Pausing and Stopping Sequences Stopping a sequence If you press RUN STOP SHIFT B while a sequence is being executed the sequence will stop If you press RUN STOP SHIFT B again after stopping the sequence the sequence will start over again from the beginning of the selected program When sequences cannot be executed You cannot execute programs together in a sequence if their modes and ranges do not match When the load is on if the current mode and range do not match those of the sequence that you are trying to execute you will be unable to execute the sequence First turn off the load and then set the mode and range to match those of the sequence that you want to execute When the load is off if the current mode and range settings do not match those of the sequence that you are trying to execute the settings of the se
124. s MODE repetitively until CP is highlighted on the menu After you select the operation mode the popup menu disappears and CP appears on the display 3 Press RANGE to select the current range The current range popup menu appears Each time you press RANGE the range switches between L M and H Press RANGE until the range that you want to select is highlighted After you select a range the popup menu disappears and the range that you selected appears along with its full scale value The full scale value varies depending on the model 4 Press VRANGE SHIFT RANGE to select the voltage range The voltage range popup menu appears Each time you press VRANGE SHIFT RANGE the voltage range switches between 4 V and 30 V Press VRANGE SHIFT RANGE until the range that you want to select is highlighted After you select a voltage range it appears on the display 5 Check that the display is in the fundamental setting entry condition If SET is not highlighted press SET VSET to switch to the fundamental setting entry condition 6 Turn the rotary knob to set the power The CP mode settings are complete When you press LOAD the LOAD LED lights and the PLZ 4WL starts supplying current You can change the voltage even when the load is on Basic Functions 36 Switching The switching function is used to switch between two preset load currents Switching can be performed in CC mode and CR mode Switching is sui
125. s disconnected during remote sensing the PLZ 4WL and the DUT may be damaged Make sure that wire connections are secure Details about overcurrent protection OCP You can set the value at which OCP is activated You can also set the action that is performed when OCP is activated By factory default the action is set to LIMIT the current is limited To change the action that is performed LIMIT or LOAD OFF from the menu select 1 Setup gt 2 Protect Action gt OCP E Setting the overcurrent protection activation value You cannot set the overcurrent protection activation value in CC mode CEN Ea O 0 00 0 000v 0 000w CC seT 8 000a OPP 181 5 w 55 00 a 1 Make sure that the load is off If the LOAD LED is lit press LOAD to turn the load off 2 Press OPP OCP until OCP is highlighted on the display The OPP OCP key lights Pressing OPP OCP switches between OCP and OPP 3 Turn the rotary knob to set the overcurrent protection activation value Details about overpower protection OPP You can set the value at which OPP is activated You can also set the action that is performed when OPP is activated By factory default the action is set to LIMIT the power is limited To change the action that is performed LIMIT or LOAD OFF from the menu select 1 Setup gt 2 Protect Action gt OPP E Setting the overpower protection activation value Yo
126. setting for OCP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4W sinks current as a constant current load at point F Even if you attempt to decrease the resistance to increase the current the current will not increase beyond point F If you increase the resistance to decrease the input current overcurrent protection OCP is cleared The PLZ 4WL returns to constant resistance CR mode and the operating point moves along segment AF The load is turned off no current flows LOAD OFF The PLZ 4WL stops operating as a load Point F The PLZ 4WL switches out of constant resistance CR mode LIMIT Overcurrent protection OCP continues and the PLZ 4WL operates as a constant current load 121 PLZ 4WL Operating Area How constant power CP mode works In CP mode the PLZ 4WL sinks current so that the power consumed inside the electronic load is constant Constant power mode operation When the PLZ 4WL is used in constant power CP mode it operates as a constant power load as shown in the figure below When the voltage V1 of the constant voltage power supply increases the input current I decreases so that the power P consumed by the PLZ AWL is kept constant P V x I In the figure below P V2 x 12 V3 x I3 P00 petet The power P is constant even i when the current and voltage vary WM i Voltage V1 v Con
127. sh the tab on the bottom side of the barrier and pull the barrier towards you Push this part and pull the barrier toward you Terminal barrier Installation and Preparation 23 24 Remote Sensing When the load wiring is long the voltage drop caused by the wiring s resistance cannot be ignored Remote sensing is a function that can be used to compensate for this voltage drop To accurately set the resistance voltage and power use remote sensing Remote sensing makes operation more stable by improving the transient characteristics in the constant resistance CR constant voltage CV and constant power CP modes e Never wire the sensing terminals while the POWER switch is turned on Doing so may damage the internal circuitry e Ifa wire is disconnected during remote sensing the PLZ 4WL and the DUT may be damaged Make sure that wire connections are secure Do not reverse the wiring of the OUT and COM terminals of the SENSING terminal Doing so may damage the internal workings of the PLZ 4WL CAUTION Remote sensing terminals PLZ 4WL Series DUT Electronic Load The table below indicates sizes of the wires that you can use to connect to the sensing terminals Strip approximately 10 mm of coating from the end of the wiring STRIP GAUGE While pressing here with a 10 mm screwdriver insert the wire pg A Te 9 oO S
128. sing the PLZ 4WL s screws connect one end of the chassis connection wire that came with the PLZ 4WL to the chassis and connect the other end to the negative load input terminal If the DUT a power supply or similar device is grounded connect the chassis connection wire to the positive or negative terminal in the same manner as the DUT You can also float the chassis connection wire not connecting it to the positive or negative terminal Chassis connection wire T Push the load input terminal cover into the front panel and then fix it into place using the load input terminal cover screws that came with the PLZ 4WL maximum tightening torque 1 N m Screw M3 x 18 Sy Load wiring Screw M3 x 18 Connect the load input terminal cover to the panel so that the terminals are not exposed 8 Connect the load wires to the output terminals of the DUT Connect the positive load input terminal to the positive terminal of the DUT and connect the negative load input terminal to the negative terminal of the DUT PLZ 4WL Connecting to the Load Input Terminals PLZ 4WL Removing the terminal barrier A barrier is placed between the DC INPUT terminals when the PLZ 4WL is shipped from the factory To avoid shorting between the terminals we recommend that you leave the barrier in when you make connections When testing some types of devices you may want to remove the barrier E Removing the terminal barrier Pu
129. sor by pressing A YW lt q and gt To exit the sequence editing screens press PREV SHIFT lt q PLZ 4WL SEC Last Load ON Last Set 1 000A RPTSTEP 15 TIME BASE 1ms PREV 10 11 Press EDIT SHIFT A The program editing screen appears Set the program number to 11 If the cursor is not blinking at No press A and W to move it there Turn the rotary knob to select the number Press w to move the cursor to Memo and enter Program11 Enter the text using the rotary knob and q and gt Press w to move the cursor to Mode and select an operation mode CC mode Turn the rotary knob to select FCC Press w to move the cursor to Range and set the current and voltage ranges to 50 A and 4 V Turn the rotary knob to select 50 A 4 V Press w to move the cursor to Loop and set the number of times to execute the program to 3 Turn the rotary Knob to select the number Press w to move the cursor to Last Load and select the state that the load will be in after the sequence ends select ON Turn the rotary knob to select ON Press w to move the cursor to Last Set and select the current that the load will supply after the sequence ends select 1 A Turn the rotary knob to select the number Press w to move the cursor to RPTSTEP and set the step number of the last step to 15 Turn the rotary knob to select the number Press w to move the cursor to TIME BASE and set the step execution
130. specified is executed during sequence operation OV Current monitor output Z CAUTION The signal is output from the MON OUT connector on the PLZ 4WL front panel and across pins 7 and 8 pin 8 is common of the J1 connector To avoid damaging the PLZ 4WL observe the following precautions Pin 8 of the J1 connector is connected the negative load input terminal Make sure that the wire of pin 8 does not touch any of the other pins Range H L M VHIL VM MON OUT connector Vu VM BNC 1V 01V Monitor output Across pins 7 and 8 of the tov 14v J1 connector 0o 0 Current Full scale of the range E MON OUT connector BNC on the PLZ 4WL front panel 500 The common is connected to the chassis electric Front panel potential It is isolated from A COM For current ranges MON OUT H and L 1 V corresponds to the full scale current for current range M 0 1 V corresponds to the full scale current The output impedance is approximately 50 E Across pins 7 and 8 of the J1 connector The common is connected to A COM For current ranges H and L 10 V corresponds to the full scale current for current range M 1 V corresponds to the full scale current PLZ 4WL Maintenance This chapter describes the maintenance procedures including cleaning inspection and calibration OM Inspection To purchase accessories or options contact your Kikusui agent or distributor Cleaning the dust filter A
131. stant resistance CR mode 109 Constant voltage CV mode 109 Constant CP power mode 110 Measurements 110 Switching mode 111 Slew rate 111 Soft start 112 Response 112 Remote sensing 112 Protection function 112 Sequence function 113 Other functions 113 Common specifications 114 General specifications 115 Dimensions 116 Appendix A Operating Area 118 Basic operation modes 118 How constant current CC mode works 119 How constant resistance CR mode works 720 How constant power CP mode works 122 How constant voltage CV mode works 124 How constant current and constant voltage CC CV mode works 126 How constant resistance and constant voltage CR CV mode works 128 Operating areas of each model 130 B Sequence Program Creation Table132 C Options 134 INDEX135 PLZ 4WL Search by Topic What accessories are included in the package gt Checking the Package Contents Preparation The installation space is limited so want to gt See the included Setup Guide check the installation conditions document or the electronic version of the document on the CD R How do I connect the AC power supply Connecting the Power Cord What kind of load wiring should use gt Load wiring How do set the communication conditions See the Communication Interface for remote control Manual on the CD R How do rack mount the PLZ 4WL What Attachment to the rack
132. stant voltage a Are V1 X h V2 X 2 power supply Vio V2 PLZ 4WL Series Maximum rated current Current Transition of the operating point overcurrent protection OCP In this example we will assume that the PLZ 4WL is being used in constant power CP mode to test the load characteristic of a constant voltage power supply Constant power line constant power settings P1 P2 and PB Operating area OCP activation point Constant current line OCP setting Input voltage V Logarithmic scale Input current A E Operation on segment AB If the voltage of the constant voltage power supply is set to V1 and the power of the PLZ 4WL is increased P1 P2 gt PB thereby increasing the input current load current the operating point moves along segment AB A1 gt A2 5B When point B is reached overcurrent protection OCP is activated At this point one of two types of operations occurs depending on the protection action setting for OCP If the protection action is set to LOAD OFF the load turns off If the protection action is set to LIMIT the PLZ 4W sinks current as a constant current load at point B Even if you attempt to increase the input current the current will not increase beyond point B If you decrease the input current overcurrent protection OCP is cleared The PLZ 4WL returns to constant power CP mode and the operating point moves along segment AB e 122 PLZ 4WL
133. table for transient response testing of regulated DC power supplies and similar devices To use the switching function you need to set a switching level and a switching interval and then turn on the switching function You can configure switching while the load is on or off When you execute switching a trigger signal is produced from the TRIG OUT terminal on the front panel Edge at which the pulse is output from the TRIG OUT connector FREQ Th TL SETIA LEVEL Switching level 100 FREQ Frequency of the switching interval LEVEL AI S Th HIGH time of the switching interval olA TL LOW time of the switching 0 interval Example in CC Mode MODE LOAD O SWON FREQ DUTY LEVEL SHIFT O ThTL KA SWITCHING Setting the switching level You can set the switching level to a current or conductance value or to a percentage E Setting the switching level to a current or conductance value 1 Press LEVEL The LEVEL key lights and in CC mode the current can be set in CR mode the conductance can be set 2 Turn the rotary knob to set the switching level E Setting the switching level to a percentage The specified current or conductance level is equivalent to 100 Press SHIFT LEVEL The LEVEL key lights and you can set the switching level to a percentage 2 Turn the rotary knob to set the switching level 0 0 to 100 0 PLZ 4WL Switching Setting the switching in
134. tage is applied an input current proportional to the applied voltage is added to the input current setting On the other hand if a negative external voltage is applied an input current proportional to the applied voltage is subtracted from the input current setting Regardless of whether the external voltage is positive or negative the range of the input current is from 0 A to 100 of the specified range The precision of the PLZ 4WL cannot be guaranteed for voltages below 10 V or above 10 V Connected pins J1 3 signal J1 4 common To avoid damaging the PLZ 4WL observe the following precautions The maximum voltage that can be applied across pins 3 and 4 of the J1 connector is 11 V Do not apply a voltage that exceeds this value e Pin 4 of the J1 connector is connected the negative load input terminal Make sure that the wire of pin 4 does not touch any of the other pins J1 lo Iset lt 3 Approx 10 KQ a lo Input current Acom 4 k Ein Im Rated current Ein External voltage Twist 10 lt Ein lt 10 V Iset Panel and remote control setting To avoid noise interference use a highly stable low noise external voltage source and twisted signal wires Turn the POWER switch off Connect the external voltage across pins 3 and 4 of the J1 connector Turn the POWER switch on and make sure that the load is off Set the operation mode and the current range If you also want to co
135. tart is useful when e The load is turned on at the same time that voltage is applied to the load input terminals e When the load is on and voltage is applied to it after a period of no input 0 V You can reduce the amount of output voltage distortion that occurs when the DUT starts by setting an appropriate soft start time Rise time of the DUT women Rise time of the PLZ 4WL Input current Input current Time Time When the soft start time is too fast When the soft start time is appropriate fo If the current rise time that is determined by the slew rate and the current setting is longer than the soft start time the actual rise time will be longer than the soft start time If you want to raise the current according to the soft start time increase the slew rate To set the soft start time OFF 100 us 200 us 500 us 1 ms 2 ms 5 ms 10 ms or 20 ms from the menu select 1 Setup gt 1 Function gt Soft Start 39 Basic Functions When the short function is enabled the maximum current is set in CC mode or the minimum resistance is set in CR mode and the short signal output of the J1 connector is turned on The short signal output terminal is a relay contact 30 Vdc 1 A You can drive an external relay for high currents or a similar device and short the load input terminals Be sure to use a dedicated driver circuit to drive a relay for high current Please supply the dedicate
136. te the contents of a program Not entering a memo will not affect the execution of the sequence You can enter information such as the date and time of measurement a test description a program name or differences in the setup conditions You can select alphanumeric characters by turning the rotary knob When the desired character is displayed press to move the cursor to the right and enter the next character To move the cursor to the left press lt 4 E Turning pages You can switch between edit screens by pressing SHIFT at the same time as A V 4 or gt To move to the next screen press NEXT SHIFT gt To return to the previous screen press PREV SHIFT lt Sequences A 59 60 OW How Normal Sequences Work p 64 Normal sequences are composed of two elements programs and steps Programs are groups of executable units called steps The steps in a program are executed in ascending order starting from step 001 A single execution of a program is completed after the program s last step has been executed Step 001 Step 002 Step 003 Program END Step 001 Step 002 Step 003 The maximum number Program of programs is 10 END Step 001 f Step 002 The maximum total Program Step 003 number of steps is 256 END First configure the program settings and then configure the step settings The details of the method for configuring a normal sequence are explained in Sequence Example N
137. tep 3 to 0 5 A in the same manner as step 2 Press NEXT SHIFT p or ENTER The step execution time screen appears Setting the execution time h min s ms 00 00 001 00 00 001 ND prev TOTAL 003 prev TOTAL 003 NEXT NEXT Press A to move the cursor to step 001 At first the execution time is 0 00 00 001 Set the execution time for step 1 to 3 min 20 s You can press lt and gt to move the cursor to the digit that you want to change Turn the rotary knob to select 0 03 20 0 Press w to move the cursor to step 002 Set the execution time for step 2 to 2 min 30 s in the same manner that you set it for step 1 Press w to move the cursor to step 003 Set the execution time for step 3 to 1 min 20 s in the same manner that you set it for step 1 Press NEXT SHIFT p or ENTER The next editing screen appears PLZ 4WL Sequence Example Normal Sequence Memo You can move the cursor by pressing A W q and gt Press PREV SHIFT to return to the previous screen PLZ 4WL LOAD RAMP TRIG PAUSE ON ON OFF OFF ON OFF OFF QFF OFF OFF ON OFF END TOTAL 003 Setting the execution pattern Press A to move the cursor to step 001 For step 1 set LOAD and RAMP to ON lt q Press gt to move the cursor to the item that you want to set Turn the rotary knob to choose a setting Leave TRIG and PAUSE set to OFF Press w to move the cursor to step 002 For step 2 s
138. terval Memo When you set Th the fine adjustment setting resolution is 50 times that of coarse adjustment You can set the switching interval by specifying a frequency and duty ratio or by specifying an amount of time E Setting the switching interval by specifying a frequency and duty ratio Set the frequency and the duty ratio the ratio of HIGH to LOW It does not matter whether you set the frequency or the duty ratio first In the following example the frequency will be set first 1 Press FREQ DUTY until FREQ is highlighted The FREQ DUTY key lights and the frequency can be set Pressing FREQ DUTY switches between FREQ and DUTY 2 Turn the rotary knob to set the frequency 1 Hz to 50 kHz The frequency setting resolution varies depending on the specified frequency The PLZ 4WL switches between units Hz and kHz automatically 3 Press FREQ DUTY to highlight DUTY The FREQ DUTY key lights and the duty ratio can be set 4 Turn the rotary knob to set the duty ratio 5 to 95 The minimum time interval is 10 us The maximum duty ratio is limited as the frequency gets higher E Setting the switching interval using two HIGH and LOW operation times Th and TL Set the HIGH and LOW times It does not matter whether you set the HIGH or LOW time first In the following example the HIGH time will be set first 1 Press Th TL SHIFT FREQ DUTY until Th is highlighted The Th TL key light
139. time to 1 ms Turn the rotary knob to set the time Press NEXT SHIFT p gt or ENTER The step value screen appears Sequences A 76 Sequence Example Fast Sequence Setting the steps of program 11 Memo You can move the cursor by pressing amp and W Press PREV SHIFT q to return to the previous screen Set the current and trigger output of each step in program 11 In this example the current will be set first followed by the trigger output Current Step number 10 00A_STEP 0014 Tri tput rigger outpu Waveform display Magnification Each time you press W the cursor moves between items in this order step number current trigger output setting and then magnification Each time you press A the cursor moves between items in this order magnification trigger output setting current and then step number Make sure that the cursor is blinking at STEP If the cursor is not blinking at STEP press and to move it there Turn the rotary knob to set the step number to 1 Press w to move the cursor to the current and turn the rotary knob to set the value to 10 A Press A to move the cursor to STEP Set the currents for steps 2 through 5 to 10 A in the same way that you set step 1 Set the current for step 6 to 5 A Press w to move the cursor to the trigger output setting and turn the rotary knob to select T Set the currents for steps 7 to 10 to 10 A Set the current for step 11 to
140. to 100 of the maximum low range value 1 Press ENTER The load turns on automatically and the gain calibration screen CC Low Gain Adjustment appears 1 Press 4 or gt to set the cursor position of DAC REF and then turn the rotary knob so that the current flowing through the shunt resistor is within 0 1 of the value corresponding to 100 of the full scale value see the table of CC mode settings The measured value gain MON is set automatically E Step D Calibrate the gain value for the internal reference voltage for the protection function settings Press ENTER The gain calibration screen CC Low Limit Gain Adjust appears 1 5 Press 4 or gt to set the cursor position of DAC LIM and then turn the rotary knob so that the current flowing through the shunt resistor is within 0 1 of the value corresponding to 100 of the full scale value see the table of CC mode settings 1 Press ENTER The load turns off automatically The calibration of the low range current values is complete PLZ 4WL eoocoe Q CV Mode Calibration Calibration numbers 4 and 5 Calibrating the mid range Calibrate the Mid range in the same way that you calibrated the Low range In step 4 select 2 CC Mid Calibrating the high range Calibrate the High range in the same way that you calibrated the Low range In step 4 select 3 CC High The calibration of CC mode is complete after you calibrate the
141. tor screen press INS SHIFT A to display the FILL screen DATA1 0 164A DATA2 1 164A START 0016 STOP 1024 Item Setting Description DATA 1 0 to 100 of the range The current of the first step DATA2 0 to 100 of the range The current of the last step START 1 to 1024 The step number of the first step STOP 4 to 10241 The step number of the last step 1 You can set the number of the last step to any value up to 1024 but the last step that can be monitored is determined by the value that you set for RPTSTEP Press W or A to move the cursor to DATA1 and use the rotary knob to set the current of the first step In the same way set DATA2 the current of the last step START the step number of the first step and STOP the step number of the last step Memo You can set the number of the last step to any value up to 1024 but the last step that can be monitored is determined by the value that you set for RPTSTEP when you edited the program After you have finished making the settings press ENTER to return to the monitor screen In the example in the figure below the same waveform is repeated twice First set the first step to 16 and the current to 0 164 A and set the last step to 100 and the current to 1 164 A Then set the first step to 101 and the current to 0 164 A and set the last step to 200 and the current to 1 164 A Current 1 164A DATA2 PLZ 4WL Steps 16 to 100 DATA1
142. u cannot set the overpower protection activation value in CP mode CEN Ea O 0 002 0 000v 0 000w CC seT 8 000a Wa 181 5 w ocp 55 00 a PLZ 4WL Protection Functions 1 Make sure that the load is off If the LOAD LED is lit press LOAD to turn the load off 2 Press OPP OCP until OPP is highlighted on the display The OPP OCP key lights Pressing OPP OCP switches between OCP and OPP 3 Turn the rotary knob to set the overpower protection activation value Details about undervoltage protection UVP You can set the value at which UVP is activated You can disable UVP by setting the value to OFF If the auto load off timer is on when UVP is activated the time from load on to load off is 53 indi F N P indicated in a popup window that appears E Setting the undervoltage protection activation value 1 Press UVP SHIFT OPP OCP The UVP key lights 2 Turn the rotary knob to set the undervoltage protection activation value If you set the value to OFF undervoltage protection is disabled Details about reverse connection protection REV When a reverse voltage is detected and the load is turned off turn off the DUT immediately If you are using the remote sensing function and the sensing wires are connected in reverse SA p 24 a reverse voltage will not be detected because no current will flow even when the load is turned on Because there is no threat of damage or injury no alarm occurs Clearing alarms
143. uctance can cause the current to lag the voltage This can result in unstable control of the PLZ 4WL and oscillation To ensure stable operation reduce the response speed Installation and Preparation Methods for Ensuring Stable Operation Do not apply excessive voltages to the load input terminals CAUTION Do not apply a voltage that is greater than the maximum voltage of 30 Vdc to the load input terminals Doing so may damage the product SLEWRATE 2 00 mA us The maximum voltage that can be applied to the load input terminals is 30 Vdc You cannot use voltages that exceed 30 Vdc When excessive voltage is applied the protection functions are activated Lower the voltage of the DUT immediately Match the polarities of the load input terminals and the DUT terminals CAUTION Connecting the electronic load to the DUT with the polarities reversed can result in the flow of excessive current and damage to the DUT and the electronic load Connect each load input terminal to the terminal on the DUT with the same polarity eM Device lt 30 Vdc PLZ 4WL Series under test Electronic Load Reverse SLEWRATE 25 0 pA ps The protection functions are activated when a reverse voltage of approximately 0 4 V or greater is applied If this happens turn off the DUT immediately 20 PLZ 4WL Oe Connecting to the Load Input Terminals This section explains how to connect the DUT to th
144. upler 21 N C PLZ 4WL External Control Pin Signal Name Description No 22 STATUS COM STATUS signal common for pins 17 to 20 23 N C 24 N C 25 SHORT SIGNAL OUT Relay contact output 30 VDC 1 A 26 SHORT SIGNAL OUT 1 Valid only when the front panel setting is H range RANGE CONT 0 RANGE CONT 1 H range H H M range L L range L H 2 The maximum applied voltage of the photocoupler is 30 V and the maximum current is 8 mA 3 RANGE STATUS 0 RANGE STATUS 1 H range OFF OFF M range OFF ON L range ON OFF Precautions for high speed load simulations During high speed load simulation do not connect the common terminal of the external device to the terminal of the DUT the terminal that is connected to the negative input terminal of the PLZ 4WL Attach a commercially available ferrite core to the wiring between the PLZ 4WL and the external device PLZ 4WL Series External control terminal Attach a ferrite core External device N Load input ACOM is seminale SS oe ete ee eee J Common terminal PLZ 4WL External Control o 84 Controlling Constant Current Mode CC Mode Externally When you apply an external voltage of 0 V to 10 V to the PLZ 4WL the input current varies in accordance with the voltage An external voltage of 0 V results in an input current of 0 A An external voltage of 10 V results in a
145. varies the PLZ 4WL sinks current to maintain V R with the specified resistance value R fixed When VM is greater than V the PLZ 4WL operates as a constant voltage load and keeps input voltage V constant even when the input current varies Current does not flow when VM is less than or equal to V The PLZ 4WL switches between the two modes automatically In the figure below R1 is the internal resistance of the constant voltage power supply In constant voltage CV mode the PLZ 4WL may operate unstably if R1 is low Rio ponies We E t Voltage i V CR operation VM 1 The resistance is constant even Battery 7 i i CV when the voltage and current vary Vii Setting Ly operation Q 1 The voltage is constant even 8 when the current varies PLZ 4WL Series 0 Current Transition of the operating point overpower protection OPP In this example we will assume that the discharge characteristic of a battery is being measured Constant resistance line Operating area constant resistance settings RM1 RM2 and RN OPP activation point Constant power line OPP setting Input voltage V 5 F ee A Constant voltage ing py constant voltage setting Logarithmic scale IN IOCP Input current A When the overcurrent protection OCP setting IOCP is greater than current IN at point N the voltage of the battery is VM In constant resistance CR mode if the resistance is reduced RM1
146. voltage CV mode the PLZ 4WL may operate unstably if R1 is low Ri z777 Voltage AM V CC operation VM The current is constant even lh CV l when the voltage varies Battery 7 y i Setting CV operation i The voltage is constant even when the current varies PLZ AWL Series 0 Current i3 setting Transition of the operating point overpower protection OPP In this example we will assume that the discharge characteristic of a battery is being measured Constant current line constant current settings IM1 IM2 and IN Operating area gT ene E OPP activation point Constant power line OPP setting Input voltage V Constant voltage line constant voltage setting Logarithmic scale IN Input current A The battery voltage is VM In constant current CC mode if the current is increased IM1 gt IM2 gt IN so that the input current load current increases the operating point moves along segment MN M1 gt M2 gt N When the overpower protection OPP setting is PN OPP is activated when point N is reached At this point one of two types of operations occurs depending on the protection action setting for OPP If the protection action is set to LOAD OFF the load turns off 126 PLZ 4WL e Operating Area PLZ 4WL If the protection action is set to LIMIT the PLZ 4WL sinks current as a constant power load at point N Even if you attempt to i
147. you selected If you change the settings the key light turns off e d PLZ 4WL 45 e 46 ABC Preset Memory Recalling ABC preset memory entries There are two methods of recalling the preset memory SAFETY and DIRECT SAFETY You can recall a memory entry after first checking its contents on the display DIRECT The settings of the setup memory entry are applied immediately The factory default setting is SAFETY You can set the preset memory recall method SAFETY or DIRECT from the menu by selecting 1 Setup gt 3 Memory E Memory recall method SAFETY 1 Configure the proper operation mode and range settings for the preset memory entry that you want to recall 2 Press the key that corresponds to the preset memory entry A B or C Hrt Memo that you want to recall oe eee by The selected key lights SHIFT q The settings stored in the specified preset memory are displayed You can recall a different preset memory entry by pressing another preset memory key A B or CEO Ea o 0 00m 0 000v 0 000w CC iset 8 000a Setting saved to the 2 000 a preset memory 3 Check the contents of the preset memory entry and press ENTER The selected key lights The settings that correspond to the selected memory entry are recalled and applied If you change the settings the key light turns off E Memory recall method DIRECT 1 Configure the proper operation mod
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