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Prodigit 3110 Series Operation Manual

Plug-in electronic load
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3110 Series
Plug-In Electronic
Load Operation manual
S/N:900311002
REV:A

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Summary of Contents for Prodigit 3110 Series

  • Page 1 3110 Series Plug-In Electronic Load Operation manual S/N:900311002 REV:A...
  • Page 2 会也可能不会含有所有所列的部件。This table shows where these substances may be found in the supply chain of Prodigit electronic information products, as of the date of sale of the enclosed product. Note that some of the component types listed above may or may not be a part of the enclosed product. ○：表示该有毒有害物质在该部...
  • Page 3 Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. PRODIGIT assumes no liability for the customer's failure to comply with these requirements.
  • Page 4 DECLARATION OF CONFORMITY Company Name: PRODIGIT ELECTRONICS CO., LTD Address: 8F, No.88, Baojhong Rd., Sindian District, New Taipei City, Taiwan. Declares under sole responsibility that the product as originally delivered Product Names: DC Electronic Loads Model Numbers: 3110, 3111, 3114, 3117, 3119...
  • Page 5 SAFETY SYMBOLS Direct current (DC) Alternating current (AC) Both direct alternating Three-phase alternating current Protective earth (ground) On (Supply) Off (Supply) Fuse Caution！Refer to this manual before using the meter. Caution, risk of electric shock CAT IV – Is for measurements performed at the source of the low-voltage installation.

  • Page 6: Table Of Contents

    5-5. Constant Voltage mode application ································································ 86 5-6. Constant Power mode application ·································································· 88 5-7. Zero-Volt loading application ········································································· 91 5-8. 3110 series electronic load OCP, OPP, SHORT operation flow Chart ···················· 92 5-9. Power Supply OCP testing ··········································································· 93 5-10.
  • Page 7 Fig 5-6 Constant Voltage mode application······························································· 86 Fig 5-7 CONSTANT POWER MODE APPLICATION ·················································· 89 Fig 5-8 Zero-Volt loading connection ······································································· 91 Fig 5-9 3110 series electronic load OCP, OPP, SHORT operation flow chart ··················· 92 Tables Table 1-1 3110 Series Specification ·········································································· 9 Table 3-1 3110 initialize ·······················································································...
  • Page 8 Table 4-5B SYSTEM COMMAND SUMMARY ··························································· 65 Table 4-6B MEASURE COMMAND SUMMARY ························································ 65 Table 4-7 COMMAND TERMINATOR ····································································· 66 Table 4-8 module for each series ··········································································· 73 Table 4-9 register of PROT status ·········································································· 75 Table 4-10 MODEL NUMBER ··············································································· 76...

  • Page 9: Chapter 1 Introduction

    3.125A is possible. Conversely if the 3110 is required to sink 50A the voltage must be limited to 5V. The power contour of each load module in the 3110 series is shown in Fig 1-1, to 1-5.

  • Page 10: Fig 1-1 3110 80V/50A/250W Power Contour

    2 PRODIGIT Voltage 250W Power Curve 3.125A Current Fig 1-1 3110 80V/50A/250W power contour Voltage 350W Power Curve 1.2V 4.375A Current Fig 1-2 3111 80V/70A/350W power contour Voltage 500V 350W Power Curve 23.3V 0.7A Current Fig 1-3 3114 500V/15A/350W power contour...

  • Page 11: Fig 1-4 3117 80V/140A/700W Power Contour

    Constant Current (CC) mode, Constant Resistance (CR) mode, Constant Voltage (CV) mode, and Constant Power (CP) mode. 1.1.1. CC Mode With the operating mode of Constant Current, the 3110 series electronic load will sink a current in accordance with the programmed value regardless of the input voltage (see Fig.1-6).

  • Page 12: Fig 1-7 Constant Resistance Mode

    Fig 1-8 Constant Voltage mode 1.1.4. CP Mode: At Constant Power mode, the 3110 series Electronic Load will attempt to sink load power (load voltage * load current) in accordance with the programmed power. (See Fig 1-9). Fig 1-9 Constant Power mode...

  • Page 13: Fig 1-10 Dynamic Wave Form

    3110 Series Operation Manual 5 1.1.5. Dynamic Waveform Definition Along with static operation the 3110 load modules are built with a Dynamic mode for operation in Constant Current (CC), Constant Resistance (CR) or Constant Power (CP). This allows the test engineer to simulate real world pulsing loads or implement a load profile that varies with time.

  • Page 14: Fig 1-11 Rise Time Transition Limitation

    6 PRODIGIT In cases where the transition from one setting to another is small, the small signal bandwidth (of the load) limits the minimum transition time for all programmable slew rates. Because of this limitation, the actual transition time is longer than the expected time based...

  • Page 15: Features

    3110 Series Operation Manual 7 Features The main features of the 3110 series of load modules are highlighted below. • 5 digital V / A / W Meter. • High-speed measurement and communication transmission. • V.A.W. values can be displayed simultaneously.
  • Page 16 8 PRODIGIT 1.3.1 Accessories Installation Description...

  • Page 17: Specifications

    3110 Series Operation Manual 9 Specifications Table 1-1 3110 Series Specification...

  • Page 18: Chapter 2 Installation

    Prodigit's sales and service office or representative. Your 3110 series was shipped with a power cord for the type of outlet used at your location. If the appropriated cord was not included, please contact your nearest sales office to obtain the correct cord.

  • Page 19: Input Fuse

    BEFORE replacing the fuse you must switch off the unit and mains power outlet and disconnect the plug of the AC Power cable from the input socket of the 3110 series. If prior to exchanging the fuse, there is any abnormal noise or odour do not use the unit.

  • Page 20: Environmental Requirements

    12 PRODIGIT 2-3 Environmental requirements • Indoor use. • Measurement Category I. • Pollution Degree 2. • Relative Humidity 80% Max. • Ambient Temperature 0 to +40°C • Altitude up to 2000m. • The equipment is not for measurements performed for CAT II, III and IV.

  • Page 21: Power Up

    2.6.1 Check that the POWER switch is in the off (O) position 2.6.2 Check the rear panel voltage selector of the 3110 series is Correctly set. 2.6.3 Check that nothing is connected to the DC INPUT (load input terminals) on the Front panel of the 3110 load .

  • Page 22: Load Wire Inductance

    Generates a large voltage at both ends of the wiring cable. This voltage applies to all of the Load input terminals of the 3110 series when the impedance of the EUT is relatively small. The voltage generated by the load wire inductance (L) and the current variation (I) is Expressed using the following equation.

  • Page 23: Fig 2-3 Waveform Example: Generate Unstable Oscillation

    3110 Series Operation Manual 15 In such event, the electronic load (3110 series) may generate unstable oscillation. In such condition, the input voltage may exceed the maximum input voltage and Cause Damage to the 3110 Series. Current △I △T Voltage at Load Input Terminal...

  • Page 24: Fig 2-4 Length Of Wiring

    16 PRODIGIT To prevent problems, connect the 3110 series and the equipment under test using the Shortest Twisted Wire possible to keep the voltage caused by inductance between the Minimum operating Voltage and the maximum input voltage range or set a low slew rate.

  • Page 25: Chapter 3 Operation

    3110 Series Operation Manual 17 Chapter 3 Operation This chapter describes the front panel operation of each 3110 series load. Please note that RS- 232C/USB remote programming terms are detailed in the separate 3110 series operation manual. 3-1. Dimension 3110, 3111, 3114 Dimension...
  • Page 26 18 PRODIGIT 3117, 3119 Dimension...

  • Page 27: Front Panel Lcd Description

    The following sketch shows the layout of the front panel of the unit. Please refer to the relevant Section as indicated by the number assigned to a front panel function. Fig 3-1 Front panel of 3110 Series LCD 3.2.1. Model number and sink ranges The model number along with maximum voltage, current and power values are Detailed in this position at the top of the load module’s front panel.
  • Page 28 20 PRODIGIT Remote 3.2.4. LCD Indicator If the REMOTE LCD Indicator is illuminated this means that the unit is operating remotely via one of the optional interfaces. While REMOTE is lit it is not possible to make settings manually at the front panel. The LOCAL button on the mainframe can be used to revert back to front panel control.
  • Page 29 3110 Series Operation Manual 21 CONFIG: Sequence is “SENSE”  “LDon”  “LDoff”  “POLAR” • • LIMIT: Sequence is ”V_Hi”  “V_Lo”  “I_Hi”  “I_Lo”  “W_Hi”  “W_Lo”  “NG”. • DYN setting: Sequence is “T-Hi”  ”T-Lo”  ”RISE”  “FALL”...
  • Page 30 22 PRODIGIT 3.2.7.3. DYN setting. Each press of the DYN setting button changes the text on The middle LCD. The sequence and the corresponding setting value Shown on the bottom display are as follows: T-Hi (time high) displays the set value in milliseconds “ms”...
  • Page 31 3110 Series Operation Manual 23 3.2.7.7. OCP test. This allows the parameters of the over current protection test To be set up. Each press of the OCP button moves the setting function. The sequence of the OCP test along with the setting value is as follows: OCP Press Start (pressing the red START/STOP button starts the test) ...
  • Page 32 3.2.11. Key and LED The 3110 series Load Module features 2 setting ranges for CC, CR, CV & CP Operation. This allows improved resolution for setting low values. When left in the Default AUTO mode the changeover between ranges is automatic depending on The setting value entered.
  • Page 33 3110 Series Operation Manual 25 LEVEL 3.2.12. key and LED The LEVEL button is used to program a High or Low load value. The setting value Changes between current, resistance, voltage or power depending whether CC, CR, CV or CP mode has been selected. If the LED is lit then the High level value Setting Has been enabled.
  • Page 34 26 PRODIGIT The High and Low levels of load resistance can be preset on the lower 5 Digit LCD. The "Ω" LED will be lit indicating the setting value is ohms. 3.213.3. Constant Voltage (CV) mode: The High and Low levels of load voltage can be preset on the lower 5 Digit LCD.
  • Page 35 3110 Series Operation Manual 27 Setting Upper limit voltage VH , Middle 5 digit LCD display「V-Hi」,lower 5  Digit LCD display the unit is "V”, the V-Hi set range from 0.000 V to 81.000V step 0.001V by rotating the Setting knob.
  • Page 36 28 PRODIGIT Setting Upper limit current IH , Middle 5 digit LCD display「I-Hi」,lower 5  Digit LCD display the unit is "A”, the I-Hi set range from 0.000 A to 50.400A Step 0.001A by rotating the Setting knob. Setting lower limit current IL , Middle 5 digit LCD display「I-Lo」,lower 5 ...
  • Page 37 3110 Series Operation Manual 29 CC mode, press limits key to set the V-Hi and V-Lo voltage upper and lower  Limits of the GO / NG. Current Load Current Voltage High CC Dynamic Mode, press key to set the Level Hi and Level Low voltage ...
  • Page 38 30 PRODIGIT CV mode, press limits key to set the I-Hi and I-Lo Current upper and lower  Limits of the GO / NG. High Load Current Voltage Load lnput Voltage CP mode, press limits key to set the W-Hi and W-Lo power upper and lower ...
  • Page 39 3110 Series Operation Manual 31 T_Hi (time the waveform is high)  T_Lo (time the waveform is low)  RISE (rise time)  FALL (fall time )  The time that the waveform is high includes the rise time and is set in “ms”...
  • Page 40 32 PRODIGIT  Press DYN setting key, LED will ON Setting level High Period, Middle 5 digit LCD display will show 「T-Hi」 Lower 5 digit LCD display will show setting value, the unit is “ms” , The T-Hi Set range from 0.050 ms to 9999 ms step 0.001ms by rotating the setting Knob.
  • Page 41 3110 Series Operation Manual 33 Config 3.2.16. The CONFIG key allows the sense function to engage automatically or switched ON. The CONFIG key also enables the LOAD to automatically turn ON/OFF When a voltage level is reached. The polarity symbol can also be switched via the CONFIG menu.
  • Page 42 34 PRODIGIT Note 1: The adjustable LDon (LOAD ON) voltage is valid for CC, CR & CP operating Modes. The adjusted LDon voltage will not operate in CV mode. Note 2: The LDon (LOAD ON) voltage setting cannot be lower than the LDoff (LOAD OFF) voltage.
  • Page 43 3110 Series Operation Manual 35 Set Load polarity, the middle of the 5 digit LCD display will show "POLAR",  Lower the 5 digit LCD display "will show + LOAD" or "-LOAD", use the knobs And key settings "+ LOAD" or "-LOAD".
  • Page 44 36 PRODIGIT setting the short test time，The LCD display show 「SHORT」 on upper 5  digits LCD display，shows 「TIME」on middle 5 digits LCD display，lower 5 digit LCD display 「CONTI」, the unit is "ms". TIME: setting the short test time, The LCD display show 「SHORT」 on ...
  • Page 45 3110 Series Operation Manual 37 V-Lo : Short test voltage check lower limitation setting, The LCD display  shows 「SHORT」on upper 5 digit LCD display, Middle 5 digit LCD display value 「V-Lo」,lower 5 digit LCD display setting , the unit is "V", the V-Hi setting range from 0.000V to 81.000V step 0.001V by rotating the setting...
  • Page 46 38 PRODIGIT The setting sequence is shown below: OCP PRESS START (pressing the red start/stop key starts test)  OCP I STAR (current starting point of the OCP test)  OCP I STEP (value of incremental current steps from I START) ...
  • Page 47 3110 Series Operation Manual 39 ISTOP: setting the stop current point, The LCD display shows 「OCP」on  upper 5 digit LCD display, Middle 5 digit LCD display「ISTOP」,lower 5 digit LCD display setting value, the unit is "A", the setting range is 0.000A to the full scale of the CC mode specification.
  • Page 48 40 PRODIGIT 3.2.19. The OPP key allows the parameters of an Over Power Protection test to be entered. The OPP test will ramp up the load power in steps to validate the Device under Test’s (DUT) protection and behavior. A voltage threshold level can be set.
  • Page 49 3110 Series Operation Manual 41 PSTAR: setting the start power, The LCD display shows 「OPP」on upper 5  digit LCD display, Middle 5 digit LCD display「PSTAR」,lower 5 digit LCD value display setting , the unit is "W", the setting range is 0.00W to the full scale of the CP mode specification.
  • Page 50 42 PRODIGIT (a) The voltage level of the DUT falls below the set voltage threshold (OPP Vth) during the test (b) The current taken from the DUT reaches the OPP P STOP setting. Note 2: The message PASS will be displayed if the DUTs voltage stays above the set threshold.
  • Page 51 3110 Series Operation Manual 43 RIGHT ARROW key moves the setting selection one digit to the right.  UP ARROW key increases the setting value.  DOWN ARROW key reduces the setting value.  Note 1: In CR MODE the UP ARROW key and CLOCKWISE operation of The ROTARY Knob reduces the resistance.

  • Page 52: Fig 3-2 Typical Connection Of 3110 Series Load Module

    3.2.23. V-sense input terminal The V-sense terminals can be used to compensate for a voltage drop in the load lines between the power supply and the 3110 series Electronic Load. This is a useful feature useful when the load current is relatively high.

  • Page 53: Fig 3-3 An Equivalent Circuit In Terms Of The Current Monitor

    For example. 3110: Imax = 50A therefore I-monitor 10V = 50A so 1V = 5A Please refer to the specification Table 1-1 for the maximum current that each 3110 series module is capable of. The current monitor of this unit is NOT isolated. Please be careful when you connect an oscilloscope.

  • Page 54: Fig 3-4 (Correct) Connections To An Oscilloscope

    46 PRODIGIT Connecting the I-monitor to an oscilloscope When you connect this product to an oscilloscope, please ensure the correct polarities of the connecting probes as shown in Fig. 3-4. Fig 3-4 (Correct) Connections to an oscilloscope Fig 3-5 (Wrong) Connections to an oscilloscope If the probes connection is reversed as shown in Fig 3-5, a large current would flow through the probe and the internal circuitry of the oscilloscope is likely to be damaged.
  • Page 55 3110 Series Operation Manual 47 SURGE 3.2.25. Press the SURGE button to enter the SURGE setting mode. The LED indicator is ON and its setting sequence is as follows:  SUR._I   NOR._I   S.TIME   S.STEP ...
  • Page 56 48 PRODIGIT BATT 3.2.26. Press the BATT key to enter the BATT setting mode, the LED indicator is ON, and The setting sequence is as follows:  DISCH MODE CC  DISCH CC  STOP VOLT.V  STOP TIME.S  STOP CAP.AH...
  • Page 57 3110 Series Operation Manual 49 Set DISCH CC, LCD displays “DISCH”, the middle 5 digit monitor display  “CC”, the setting range is from 0.000A to 50.400A, and the setting interval of each setting knob and key is 0.0001A. Set STOP VOLT.V, the middle 5 digit monitor display “VOLT.V”, the lower 5 ...

  • Page 58: Initial Setting Of 3110 Series Load Module

    OFF to 19999.9, and the setting interval of each setting knob and key is 0.1. 3-3. Initial setting of 3110 series load module The following tables detail the initial settings of the 3110 series of Load Modules when Shipped from the factory. Item...

  • Page 59: Table 3-2 3111 Initialize

    3110 Series Operation Manual 51 Item Initial value Item Initial value CC L+Preset 0.0000 A V_Hi 81.000 V CC H+Preset 0.0000 A V_Lo 0.000 V CR H+Preset 68400 Ω I_Hi 70.200 A LIMIT CR L+Preset 68400 Ω I_Lo 0.00 A CV H+Preset 81.000 V...

  • Page 60: Table 3-4 3117 Initialize

    52 PRODIGIT Item Initial value Item Initial value CC L+Preset 0.0000 A V_Hi 81.000 V CC H+Preset 0.0000 A V_Lo 0.000 V CR H+Preset 34200 Ω I_Hi 140.400 A LIMIT CR L+Preset 34200 Ω I_Lo 0.000 A CV H+Preset 81.000 V W_Hi 700.20 W...

  • Page 61: Input Terminal And Wire Consideration

    3110 Series Operation Manual 53 3-4. Input terminal and wire consideration The Load input terminals are rated at 70A. Please note that the banana plug and spade/hook connectors provided in the accessory pack have a current rating of 20A. Please be sure to use the correct connection method if sinking high currents.

  • Page 62: Protection Features

    The OVP level is 105% of the 3110 nominal voltage rating. CAUTION: Never apply an AC voltage to the input of the 3110 series Load. Do not apply a DC voltage that is higher than 3110 Load Module’s rating. If this advice is ignored it is likely that damage will be caused to the electronic load module.
  • Page 63 If a reverse polarity situation occurs the load will sink power even if the LOAD button is OFF. No current will be displayed on the 3110 series load module. Current up to the load’s maximum current rating will be tolerated in reverse polarity. However there is no OVP OCP and OPP protection.

  • Page 64: Chapter 4 Communication Interface Programming Operation

    The interface allows the load settings to be configured remotely and measurements read back. There are two sets of programming terms for the 3110 series. One is referred to as the SIMPLE format and the other is COMPLEX format.
  • Page 65 3110 Series Operation Manual 57 Abbreviation Description Pin1 Carrier Detect Pin2 Receive Pin3 Transmit Pin4 Data Terminal Ready Pin5 Ground Pin6 Data Set Ready Pin7 Request To Send Pin8 Clear To Send Pin9 Ring Indicator PC RS232 Port...

  • Page 66: 3110 Series Communication Interface Programming Command List 1

    58 PRODIGIT 4-3. 3110 series Communication Interface programming command list 1 SIMPLE TYPE FORMAT SETTING PRESET NUMERIC COMMAND note A/us RISE{SP} {NR2} {; NL} A/us FALL{SP} {; NL} PERD:{HIGH LOW} {SP} {NR2}{;|NL} LDONV{SP} {NR2}{;|NL} LDOFFV{SP} {NR2}{;|NL} CC CURR:{HIGH LOW} {SP} {NR2}{;|NL} CP:{HIGH LOW} {SP} {NR2}{;|NL}...

  • Page 67: Table 4-2 Communication Interface Programming Query Command Summary

    3110 Series Operation Manual 59 詢問預置數值命令 備註 RISE{?} {; NL} ###.#### FALL{?}{; NL} ###.#### PERI  PERD : {HIGH LOW}{?} {; NL} ###.#### LDONv {?}{; NL} ###.#### LDOFfv {?}{; NL} ###.#### CCCURR : {HIGH LOW} {?} {; NL} ###.#### CP: {HIGH LOW} {?} {; NL} ###.####...

  • Page 68: Table 4-3 Communication Interface Programming Limit Command Summary

    60 PRODIGIT LIMIT COMMAND note IH IL{SP}{NR2}{; NL} IH IL {?}{; NL} WH WL{SP}{NR2}{; NL} WH WL {?}{; NL} ###.#### VH VL{SP}{NR2}{; NL} VH VL {?}{; NL} ###.#### SVH SVL{SP}{NR2}{; NL} SVH SVL {?}{; NL} ###.#### Table 4-3 Communication Interface programming limit command summary...

  • Page 69: Table 4-4 Stage Command Summary

    3110 Series Operation Manual 61 ERRor {?}{;│NL} NG {?}{;│NL} 0 : GO 1 : NG PROTect {?}{;│NL} CCR{SP}{AUTO │R2} {;│ NL}（ NOTE 1） NGENABLE{SP}{ON│OFF}{;│NL} POLAR{SP}{POS│NEG}{;│NL} START{;│NL} STOP{;│NL} 0:TEST END,1:TESTING TESTING {?}{;│NL} Table 4-4 STAGE COMMAND SUMMARY System command： NOTE RETURN m=1~10 n=1~15 RECALL {SP} {m [,n] }{;...

  • Page 70: Communication Interface Programming Command List 2

    62 PRODIGIT 4-4. Communication Interface programming command list 2 COMPLEX TYPE FORMAT SETTING COMMAND SUMMARY REMARK [PRESet : ] RISE{SP} {NR2} {; NL} A/us [PRESet : ] FALL{SP}{; NL} A/us [PRESet : ] PERI PERD : HIGH LOW {SP} {NR2} {; NL} [PRESet : ] LDONv{SP} {NR2} {;...

  • Page 71: Table 4-2B Communication Interface Programming Query Command Summary

    3110 Series Operation Manual 63 QUERY COMMAND SUMMARY [PRESet : ] RISE{?} {; NL} [PRESet : ] FALL{?}{; NL} [PRESet : ] PERI  PERD : {HIGH LOW}{?} {; NL} [PRESet : ] LDONv {?}{; NL} [PRESet : ] LDOFfv {?}{; NL} [PRESet : ] CCCURR : {HIGH LOW} {?} {;...

  • Page 72: Table 4-3B Communication Interface Programming Limit Command Summary

    64 PRODIGIT LIMIT RETURN LIMit : CURRent : {HIGH LOW}{SP}{NR2}{; NL} LIMit : CURRent : {HIGH LOW }{?}{; NL} ###.#### IH IL{SP}{NR2}{; NL} IH IL {?}{; NL} LIMit : POWer:{HIGH LOW}{SP}{NR2}{; NL} LIMit : POWer:{HIGH LOW }{?}{; NL} ###.#### WH WL{SP}{NR2}{; NL} WH WL {?}{;...

  • Page 73: Table 4-4B Stage Command Summary

    3110 Series Operation Manual 65 [STATe : ] CLR{;│NL} [STATe : ] ERRor {?}{ ; │NL} [STATe : ] NO {SP} GOOD {?}{ ; │NL} 0 : GO 1 : NG [STATe : ] NG {?}{ ; │NL} 0 : GO 1 : NG [STATe : ] PROTect {?}{ ;...

  • Page 74: The Description Of Abbreviation

    LOW or HIGH as the command, it can choose only one as the setting command. Terminator:You have to send the program line terminator character after send the command, the available command terminator characters which can be accepted in 3110 Series mainframe is listed in Table 4-8. LF WITH EOI CR,LF...

  • Page 75: Communication Interface Programming Command Description

    3. The least significant number is the 3th behind the decimal point. 4.3110 series will set to the maximum value of the model automatically when the set RISE is over the specification of Load.
  • Page 76 2. The least significant number is the 5th behind the decimal point. 3. 3110 series will set to the maximum value of the model automatically when the value of Voltage which has been set is over the specification of Load.
  • Page 77 3110 Series Operation Manual 69 OCP: START Syntax : [PRESet:] OCP:START {SP}{NR2}{;NL} [PRESet:] OCP:START ? {;NL} Purpose : Set and read the initial value of OCP test Description : This command is used for setting the required initial value (I-START) of OCP test.
  • Page 78 70 PRODIGIT TCONFIG Syntax: [PRESet : ] TONFIG {NORMAL|OCP|OVP|OPP|SHORT}{;NL} [PRESet : ] TONFIG ? {;NL} Purpose : Set and read the function of Dynamic test Description : There are four options of this command. Those are NORMAL mode,OCP test ,OPP test and SHORT test.
  • Page 79 3110 Series Operation Manual 71 BATT: WH Syntax: [PRESet : ] BATT: WH {SP} {NR2} {; NL} [PRESet : ] BATT: WH? {; NL} Purpose: Set and read BATT WH Description: Set and read BATT WH. BATT: RTIME Syntax: [PRESet : ] BATT: RTIME? {; NL} Purpose: read BATT RTIME Description: read BATT RESULT TME.
  • Page 80 72 PRODIGIT SURGE: TIME Syntax [PRESet: ] SURGE: TIME {SP}{NR2}{; | NL} [PRESet: ] SURGE: TIME ?{; | NL} Purpose: Set and read the surge current test time. Description: This command is to set and read the surge current test time, SURGE TIME: 10~1000ms.

  • Page 81: Table 4-8 Module For Each Series

    3110 Series Operation Manual 73 Purpose: To set the upper/lower limit value of threshold voltage. Description: This command is to set the upper/lower limit value of threshold voltage. When input voltage is lower than the lower limit value or higher than the upper limit value, NG indicating light will come on to indicate ”NO GOO”.
  • Page 82 [ STATe : ] CLR Syntax : [ STATe: ] CLR{;NL} Purpose : Clear the error flag of 3110 series which during the period of working Description : This command is for clearing the contents in the register of PROT and ERR.

  • Page 83: Table 4-9 Register Of Prot Status

    ？ Syntax: [ STATe: ] PROTect?{;NL} Purpose: Query if there have protection flag which had been set in this 3110 series Description： 1.PROT? means the status of Protection of 3110 series. “1” means OPP occurred.”4”means OVP. “8” means OCP. Table 4-9 shows the corresponding number of protection status 2.Use command CLR to clear the register of PROT status to be “0”...

  • Page 84: Table 4-10 Model Number

    76 PRODIGIT 4.6.3. SYSTEM Set and Read the Status of 3110 [SYStem : ] RECall{ SP }m{ ,n } Syntax : [ SYStem : ] RECall{ SP }m{ ,n }{;NL} Purpose : Recall the status of Loading which had been saved in the Memory Description: This command is for recalling the status of Load which had been saved In the Memory .
  • Page 85 3110 Series Operation Manual 77 [SYStem : ] REMOTE Syntax : [SYStem : ] REMOTE { ; NL} Purpose : Command to enter the REMOTE status (only for RS232) Description:This command is for controlling the RS232 [SYStem : ] LOCAL Syntax : [SYStem : ] LOCAL { ;...

  • Page 86: Chapter 5 Applications

    When connected in local sense mode the 5 digit voltage meter of the 3110 series Electronic load measures the voltage at its DC input terminals. The connecting leads between the DUT and the Electronic Load should be bundled or tie wrapped together to minimize inductance.

  • Page 87: Remote Sense Connections

    3110 Series Operation Manual 79 5-2. Remote sense connections Remote sensing compensates for the voltage drop in applications that require long lead lengths. It is useful under low voltage high current conditions. The remote voltage sense terminals (Vs+) and (Vs-) of the load are connected to (+) and (-) output of the DC Source.

  • Page 88: Constant Current Mode Application

    80 PRODIGIT 5-3. Constant Current mode application The Constant Current (CC) mode is ideal for testing the Load Regulation, Cross Regulation, Output Voltage and Dynamic Regulation of the power supply under test. The CC mode can also be used to test the Discharge Characteristics and the Life Cycle of cells and battery packs.

  • Page 89: Fig 5-4 Dynamic Load Current With Independent Programmed Rise/Fall Slew Rate

    3110 Series Operation Manual 81 5.3.2 Dynamic mode: The built-in pulse generators allow the user to recreate real world loads that vary With time Major application areas for dynamic operation in CC mode include: • Power supply load transient response testing •...
  • Page 90 82 PRODIGIT 5.3.3 CC Mode Operating Instructions Example: PSU 5 V / 3 A, CC mode, Level HI 3.000A, Level 1.500A 5.3.4.1 . These can be selected in turn by pressing the "MODE" key (8), LCD will illuminate According to the operating mode is selected CC.

  • Page 91: Constant Resistance Mode Application

    This is because in CR mode the current and voltage ramp up together providing a ‘soft start’ when compared to standard CC mode. However please note that with the 3110 series of Electronic Loads allow an adjustable current ramp can be set. This feature is found within the dynamic settings as RISE slew rate.

  • Page 92: Fig 5-5 Constant Resistance Mode Application

    84 PRODIGIT CURRENT SOURCE VOLTAGE SOURCE ELECTRONIC LOLAD ELECTRONIC LOLAD CR MODE CR MODE INPUT VOLTAGE LOAD RESISTANCE SETTING OUTPUT LOAD CURRENT Fig 5-5 Constant Resistance mode Application 5.4.2 CR Mode Operating Instructions Example: PSU 5 V / 3 A, CR mode, Level HI 2.0 Ohm, Level Lo 4.0 Ohm 5.4.2.1.
  • Page 93 3110 Series Operation Manual 85 5.4.2.2. Pressing the "Preset" Key (13) once will cause the button to illuminate. 5.4.2.2.1. Pressing the LEVEL key (12) LED once will illuminate, Select LEVEL Hi, Adjusted by the rotary knob and arrow key (21) can be read from the lower Display during Setting 2.0000Ω.

  • Page 94: Constant Voltage Mode Application

    86 PRODIGIT 5-5. Constant Voltage mode application In Constant Voltage (CV) operation the load will attempt to sink as much current as required in order to reach the set voltage value. CV operation is useful in checking the load regulation of dc current sources. The CV mode is also ideal for characterizing the current limit of dc power supplies.
  • Page 95 3110 Series Operation Manual 87 5.5.3 CV Mode Operating Instructions Example: PSU 5 V / 1A, CV mode, Level HI 4.000V, Level 3.000V 5.5.3.1. These can be selected in turn by pressing the "MODE" key (8), LCD will illuminate According to the operating mode is selected CV.

  • Page 96: Constant Power Mode Application

    (Fig 5-7b). Operating the 3110 series electronic load in CP mode is ideal for testing the characteristics of a battery. This is because as the battery voltage drops the load current will automatically increase in order to keep the CP setting.

  • Page 97: Fig 5-7 Constant Power Mode Application

    3110 Series Operation Manual 89 (a) The output voltage of battery (b) The output current of battery (c) The output power of battery Battery Battery Plow Phigh (e) Constant Power Mode (DYNAMIC) (d) Constant Power Mode (STATIC) Fig 5-7 CONSTANT POWER MODE APPLICATION 5.6.2.
  • Page 98 90 PRODIGIT 5.6.2.2.2. Pressing the LEVEL key (12) LED once will illuminate, Select LEVEL Hi, Adjusted by the rotary knob and arrow key (21) can be read from the lower Display during Setting 5.000W. 5.6.2.3. Pressing the "Preset" Key (13) LED once will cause the button to off, Leave setting Mode.

  • Page 99: Zero-Volt Loading Application

    3110 Series Operation Manual 91 5-7. Zero-Volt loading application As shown in Fig 5-8, the Electronic load can be connected in series with a DC voltage source which output voltage greater than 1V (3110, 3111, 3117), 6V (3114, 3119) or so that...

  • Page 100: 3110 Series Electronic Load Ocp, Opp, Short Operation Flow Chart

    SET OPP: STEP SP NR2 SET SVL SP NR2 SET OCP:STOP SP NR2 SET OPP:STOP SP NR2 SET STIME SP NR2 VTH NR2 START TESTING? OCP? OPP? STOP Fig 5-9 3110 series electronic load OCP, OPP, SHORT operation flow chart...

  • Page 101: Power Supply Ocp Testing

    3110 Series Operation Manual 93 5-9. Power Supply OCP testing 5.9.1 OCP Manual control Example: 5.9.1.1. First, press Limit Key function to setting I_Hi 6A. 5.9.1.2. Press Limit Key function to setting I_Lo 0A. 5.9.1.3. Setting OCP test, press OCP key to the next step.
  • Page 102 94 PRODIGIT 5.9.1.7. Setting OCP VTH 0.600V, press OCP key to the next step. 5.9.1.8. Press START/STOP test key. 5.9.1.9. The UUT’s output voltage drop-out lower than the threshold voltage (V-th Setting), and the OCP trip point is between I_Hi and I_Lo limitation, then Middle 5 digits LCD display will shows "PASS", otherwise shows "FAIL".

  • Page 103: Power Supply Opp Testing

    3110 Series Operation Manual 95 5-10. Power Supply OPP testing 5.10.1 OPP Manual control Example: 5.10.1.1. First, press Limit Key function to setting W_Hi 30.00W.. 5.10.1.2. Press Limit Key function to setting W_Lo 0W.. 5.10.1.3. Setting OPP test, press OPP key to the next step.

  • Page 104: Short Testing

    96 PRODIGIT 5.10.1.7. Setting OPP VTH 0.600V，press OPP key to the next step. 5.10.1.8. Press START/STOP Test key. 5.10.1.9. the UUT’s output voltage drop-out lower than the threshold voltage (V-th setting), and the OPP trip point is between W_Hi and W_Lo limitation, then lower 5 digits LCD display will shows "PASS", otherwise shows "FAIL".
  • Page 105 3110 Series Operation Manual 97 SHORT Manual control Example 5.11.1.1. Setting SHORT test, press Short key to the next step. 5.11.1.2. Press UP key, setting Short time to 10000ms, press Short key to The next Step. 5.11.1.3. Press down key, setting V-Hi voltage to 1.000V, press Short key to the Next Step.
  • Page 106 98 PRODIGIT 5.11.1.6. Short test finish, the UUT’s drop voltage is between V_Hi and V_Lo limitation, then middle 5 digits LCD display will shows "PASS" 5.11.1.7. The UUT’s not drop voltage is between V_Hi and V_Lo limitation, LCD Display will shows FAIL.

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