Chroma 63800 Series Operation & Programming Manual
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Chroma 63800 Series Operation & Programming Manual

Programmable ac/dc electronic load
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Summary of Contents for Chroma 63800 Series

  • Page 3 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Version 2.0 July 2017...
  • Page 4 The information in this document is subject to change without notice. Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
  • Page 5 Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty of the results to be obtained. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for Chroma any liability in connection with the sale of our products other than set forth herein.
  • Page 6 Material Contents Declaration The recycling label shown on the product indicates the Hazardous Substances contained in the product as the table listed below. : See <Table 1>. : See <Table 2>. <Table 1> Hazardous Substances Lead Mercury Cadmium Hexavalent Polybrominated Selected Phthalates Chromium Biphenyls/...
  • Page 7 “” indicates that the level of the specified chemical substance exceeds the threshold level specified in the standards of SJ/T-11363-2006 and EU Directive 2011/65/EU. Chroma is not fully transitioned to lead-free solder assembly at this moment; however, most of the components used are RoHS compliant.

  • Page 9: Safety Summary

    Failure to comply with these precautions or specific WARNINGS given elsewhere in this manual will violate safety standards of design, manufacture, and intended use of the instrument. Chroma assumes no liability for the customer’s failure to comply with these requirements.

  • Page 10: Safety Symbols

    Safety Symbols DANGER – High voltage. Explanation: To avoid injury, death of personnel, or damage to the instrument, the operator must refer to the explanation in the instruction manual. High temperature: This symbol indicates the temperature is hazardous to human beings. Do not touch it to avoid any personal injury.
  • Page 11 Revision History The following lists the additions, deletions and modifications in this manual at each revision. Date Version Revised Sections Feb. 2009 Complete this manual Apr. 2009 Modify the fuse spec. of AC Input in the section of “Specifications”. Oct. 2009 Add the following sections: the section of “Three Phases Parallel Setting”...
  • Page 12 section of “Resistance Subsystem”. the description of Table 9-1 in the section of “Status Registers”. the description of Table 10-7 in the section of “V monitor, Voltage Measurement Verification”. Mar. 2013 Modify the fuse specification to 3A, 250V in the section of “Specifications”.

  • Page 13: Table Of Contents

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Table of Contents General Information ....................1-1 Introduction ......................1-1 Overview of Key Features ................... 1-1 Description ......................1-1 Specifications ...................... 1-2 Names of Parts ....................1-5 1.5.1 The Front Panel ..................1-5 1.5.2...
  • Page 14 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 3.11 DC Load Simulation ..................3-51 3.12 DC Load Simulation -- Constant Current Mode ..........3-53 3.13 DC Load Simulation -- Constant Resistance Mode ........3-55 3.14 DC Load Simulation -- Constant Voltage Mode ..........3-57 3.15...
  • Page 15 Programmable AC Electronic Load 63800 Series Operation & Programming Manual 8.1.1 Setting the GPIB Address and RS-232C Parameters ......8-1 8.1.2 Wire Connection of RS-232C ..............8-1 The GPIB Capability of the AC Load ..............8-1 Introduction to Programming ................8-2 8.3.1...
  • Page 16 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 10.4.4 CP Mode Setting Verification ..............10-5 10.4.5 THD Measurement Verification .............. 10-6 10.4.6 V monitor, Voltage Measurement Verification ........10-6 10.5 DC Performance Test ................... 10-7 10.5.1 I monitor Measurement Verification ............10-7 10.5.2...

  • Page 17: General Information

    Isolated voltage and current monitoring waveforms output. Description The functions of the 63800 series loads are the same except the variations on input voltage, load current, and power ratings. They provide simulated loading current for the test unit. They can be operated independently in AC load simulation and DC load simulation.

  • Page 18: Specifications

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Specifications * The specifications of Load are listed from the next page on. 1. The equipment is for indoor use only. 2. The altitude up to 2000 meters is allowed to use the equipment.
  • Page 19 General Information SPECIFICATION Model 63802 63803 63804 Power 1,800W 3,600W 4,500W 0 ∼ 18A 0 ∼ 36A 0 ∼ 45A Current (54 A (108 A (135 A peak peak peak 50 ∼ 350V 50 ∼ 350V 50 ∼ 350V (500 (500 (500 Voltage...
  • Page 20 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Rise Time 75µs 75µs 75µs Min. Operating Voltage 7.5V 7.5V 7.5V Operating Mode CC, CV, CR, CP, DC Rectified Short Circuit Use the CR mode loading under max. power rating.

  • Page 21: Names Of Parts

    General Information Remote Interface GPIB, RS-232C AC Input Operable Voltage 90-132/180-264V 90-132/180-264V 90-132/180-264V Fuse 2A, 250V 3A, 250V 3A, 250V 47 ∼ 63Hz 47 ∼ 63Hz 47 ∼ 63Hz Operable Frequency Maximum VA 150VA 250VA 250VA General 177×440×595 mm 310×440×595 mm 310×440×595 mm Dimension (H×W×D) 7.0×17.3×23.4 inch...
  • Page 22 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual PROGRAMMABLE AC/DC ELECTRONIC LOAD 63804 4.5KVA/45A/350V MODEL FUNCTION ENTRY CURSOR LOCK /DC RECT /EDIT RECALL PROG CLEAR SAVE SHORT ENTER CONF. LOAD /LOCAL ON/OFF Figure 1-2 The Front Panel of the Electronic Load...
  • Page 23 General Information There is no function so far. 7. PROG.: 8. The Load can simulate a short circuit across the input. The short circuit can be enabled when the SHORT key is pressed. When the input is shorted, the LED aside this key will be active.

  • Page 24: The Rear Panel

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 1.5.2 The Rear Panel The Mainframe rear panel includes ports of RS-232C, System Bus, GPIB, I/O port, two BNC connectors, a load input socket and an AC LINE socket. Figure 1-3 shows the rear panel of Mainframe 63800.

  • Page 25: Installation

    Installation Installation Introduction This chapter describes how to install the 63800 series Load as well as a turn-on check procedure and application considerations. Inspection As soon as the instrument is unpacked, inspect any damage that might have occurred in shipping. Keep all packing materials in case that the instrument has to be returned. If any damage is found, please file a claim to the carrier immediately.

  • Page 26: Turn-On Self-Test

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Figure 2-1 Line Voltage Switch 2.3.3 Turn-On Self-Test Check the following before turning on the Load. The unit has been set to the correct line voltage by factory. Refer to the line voltage indicated on the left hand side of the panel.

  • Page 27: Application Connection

    I = 0 . 0 0 S = 0 . 0 0 O N L Y If any error is found in self-test, the display will stop here. In case of failure, please contact Chroma sales or service office. Application Connection 2.4.1 Load Connections WARNING...

  • Page 29: Local Operation

    Local Operation Introduction Chroma 63800 series electronic loads are suitable for design, manufacturing, testing and quality assurance. It contains a processor, GPIB and RS-232C connectors, front panel keypad, display, and power stage. Its built-in remote control function allows you to control, read back current, voltage and status.

  • Page 30: Local/Remote Control

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Local/Remote Control Local (front panel) control is in effect immediately after the power is applied. The front panel keypad and display allow manual control when Load is used in bench test applications.

  • Page 31: Local Operation

    Local Operation Local Operation In order to use the front panel keys to control the electronic load, local operation must be in effect. Immediately after the power is applied, local operation will be in effect. When local operation is in effect, you can use the display with keypad on the front panel to control the Load.
  • Page 32 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 33 Local Operation 2. REMOTE Three kinds of remote interfaces can be utilized in 63800 series: GPIB, RS-232C and SYSTEM BUS. The interactive window is shown as follows: [ R E M O T E ] G P I B A D D R E S S...

  • Page 34: External On/Off

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ D I S P L A Y ] D I S P L A Y S E L E C T I O N : M A I N...

  • Page 35: Going To Local

    Local Operation Conversely, when External OFF users can control Load ON or OFF through LOAD ON/OFF key. 3.4.3 Going To Local The CONF./LOCAL key operates as local key when Electronic Load is in remote mode. You can press CONF./LOCAL key to go to local operation when Load is in remote state. In local operation, CONF./LOCAL key operates as CONF key.

  • Page 36: The Relationship Of Crest Factor And Power Factor

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 3.4.6 The Relationship of Crest Factor and Power Factor Crest Factor is the peak current divided by RMS current. When a crest factor is set as 1.414, it means that the DSP creates a sinusoidal current waveform.
  • Page 37 Local Operation Figure 3-6 The Relationship of PF and CF Table 3-1 Maximum and Minimum Values of PF in Different CF PFmax PFmin (50V PFmin (100V PFmin (200V 0.993 0.992 0.982 0.977 0.849 0.668 0.634 0.617 0.703 0.408 0.373 0.356 0.593 0.266 0.234...

  • Page 38: I (Max) Setting And Automatic Bandwidth Adjustment (Aba) Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual d. If users set CF=3 and PF=0.7, however the allowable PF value reasonable range under CF=3 is from 0.219 to 0.593. The system will use a loading with a PF value close to the allowable PF value, in this case a PF value of 0.593 will be used.

  • Page 39: Lock Mode

    The ABA Disable Mode is an advanced mode for users that are familiar with the Chroma AC Load. If ABA is set to Disable, 63800 series may be damaged in the application. While operating, the ABA set to Enable state is recommended.
  • Page 40 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .

  • Page 41: Ac Load Simulation

    In AC mode, the CC, CR, CP, RLC/DC RECT keys are used to select the load modes for local control. AC mode and DC mode can be chosen in the 63800 series. Press CONF./LOCAL and select the first item, “SETUP”, to choose one. In AC mode, the load values, PF and CF are common to CC, and CP modes;...
  • Page 42 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .

  • Page 43: Ac Load Simulation -- Constant Current Mode

    WARNING load. If AC load can not function normally after restarting, please contact Chroma sales or service office. The output voltage of UUT will distort because of loading current. If the output voltage of the UUT becomes distortion and drops below 10V due to the loading, the AC load will stop the loading.

  • Page 44: Both

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 3.6.1 BOTH The default value in CC mode is BOTH mode. The setting methods from other mode switch to BOTH mode are as follows. 1. Press CONF./LOCAL key. 2. Press 1 , then press ENTER to enter SETUP.
  • Page 45 Local Operation P R I O R I T Y / P F 7. Press CC key to back to main page. 8. Press LOAD ON/OFF to run program when the program function is selected. In the main page, users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, CF, PF, and I (max).

  • Page 46: Cf Only

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual I s e t = 5 . 0 0 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 U N I T : A 4.
  • Page 47 Local Operation 2. Press 1 , then press ENTER to enter SETUP. (The display please refer 3.6.1 BOTH mode.) 3. Move the direction key ( ▲, ▼ ) to “1-5. CF/PF SETTING”. 4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “CF”, then press ENTER.

  • Page 48: Pf Only

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 5. Move the cursor by pressing ( ◄, ► ) to the command line of “I (max)=”. I s e t = 5 . 1 0 0 C F = 1 . 5 1 0 I p ( m a x ) = 1 0 .
  • Page 49 Local Operation The procedures of setting I = 5.200, PF = 0.88 and I (max) = 20.3, are described as below: 1. Move the cursor to the command line of “I =”. I s e t = 0 . 5 0 0 P F = 1 .

  • Page 50: Ac Load Simulation -- Constant Resistance Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual AC Load Simulation -- Constant Resistance Mode Input Voltage Slope (R setting) Load Current Figure 3-8 Constant Resistance Mode In CR mode, the Load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance.
  • Page 51 Local Operation 0.01 − (0.01×0.5%+1×0.5%) conductance : 0.01+(0.01×0.5%+1×0.5%) : 66.445 Ω 202.02 Ω resistance To set programmed CR mode is by pressing CR. Users can press the arrow key to select the setting parameters on the LCD display, including resistor value and I (max).

  • Page 52: Ac Load Simulation -- Constant Power Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual AC Load Simulation -- Constant Power Mode Load Power setting Current P = V * I Input Voltage Figure 3-9 Constant Power Mode In CP mode, the Load will sink a current according to the programmed power. This mode is operated under the firmware calculation.
  • Page 53 Local Operation [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 54 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual power, CF, PF and I (max) with the Entry keys. The values of CF and PF have interdependent relationship. When PRIORITY : CF, PF has the limitations of maximum and minimum.

  • Page 55: Cf Only

    Local Operation 6. Press 0 , . , 7 , 8 then press ENTER to change the value to “0.780”. P s e t = 2 2 0 0 . 0 C F = 2 . 0 0 0 P F = 0 . 7 8 0 I p ( m a x ) = 3 0 .

  • Page 56: Pf Only

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual P s e t = 4 5 0 0 . 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 0 . 0 U N I T : W , A V = 0 .

  • Page 57: Ac Load Simulation -- Rectified Load Mode

    Local Operation AC Load Simulation -- Rectified Load Mode The general AC products like UPS and AC SOURCE often use rectified load to test their features as Figure 3-8 shows. Based on the load network, rectified load mode is designed into three sub modes –...
  • Page 58 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual R s = 0 . 1 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 U N I T : Ω , u H , u F , A I p ( m a x ) = 1 0 .

  • Page 59: Cp Mode

    Local Operation R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 U N I T : Ω , u H , u F , A I p ( m a x ) = 1 0 .
  • Page 60 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ R E C T I F I E D L O A D ] C H O O S E = 2 1 . R L C M O D E 2 .
  • Page 61 Local Operation P s e t = 1 0 0 0 . 0 P F = 0 . 6 0 0 I p ( m a x ) = 2 0 . 0 U N I T : W , A 2.

  • Page 62: Inrush Current Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual S e t t i n g E r r o r ! ! P l e a s e c h e c k t h e s e t t i n g...
  • Page 63 Local Operation R s = 0 . 1 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 U N I T : Ω , u H , u F , ⋅ , A P H A S E = 9 0 I p ( m a x ) = 1 0 V = 0 .
  • Page 64 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 U N I T : Ω , u H , u F , ⋅ , A...

  • Page 65: Ac Load Simulation -- Timing Mode

    Local Operation The below is the waveform figure of measured inrush current. 3.10 AC Load Simulation -- Timing Mode Timing mode can be executed in CC, CR, CP and Rectified mode under AC mode. After Load ON, the timer starts to count time. The timing mode has three methods for stopping the count.

  • Page 66: Cc Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 1 - 1 . M O D E S E L E C T = A C / D C [ S E T U P ] 1 - 2 . S H O R T...
  • Page 67 Local Operation [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 68 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual interdependent relationship. When PRIORITY : CF, PF has the limitations of maximum and minimum. Contrarily, when PRIORITY : PF, CF also has the limitations of maximum and minimum. (More detailed information please refer section 3.4.5.) I s e t = 2 5 .
  • Page 69 Local Operation I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 0 1 : 0 0 C U T O F F V = 5 0 .
  • Page 70 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 12. Press 2 , 0 then press ENTER to change the value to “00:20:00”. I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 .

  • Page 71: Cr Mode

    Local Operation I s e t = 2 5 . 0 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 0 1 : 0 0 C U T O F F V = 5 0 .
  • Page 72 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual R s e t = 2 5 . 0 0 0 I r m s ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 0 1 : 0 0 C U T O F F V = 5 0 .

  • Page 73: Cp Mode

    Local Operation R s e t = 1 5 . 0 0 0 I r m s ( m a x ) = 2 5 . 0 T I M E O U T = 0 0 : 0 0 : 1 0 C U T O F F V = 5 0 .

  • Page 74: Rectified Load Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 3.10.4 Rectified Load Mode Press RLC/DC RECT key to enter AC Rectified mode of timing mode and it is divided into RLC and CP modes. Users can choose 1.RLC MODE or 2.CP MODE.
  • Page 75 Local Operation After pressing Enter, the page of CP mode can be seen is shown as below. Users can press the arrow key to select the setting parameters on the LCD display, including load power P PF, I (max), Time out and Cut off voltage. Users can type the values with the Entry keys. P s e t = 1 0 0 .

  • Page 76: Setting Timing Mode Values For Transfer Time

    3.10.5 Setting Timing Mode Values for Transfer Time For UPS, 63800 series provides a measurement function for the transfer time. The 63800 Electronic Load calculates the transfer time by calculating the time power is disconnected and reconnected.
  • Page 77 Local Operation The methods for entering transfer time are described as follows. 1. Press CONF./LOCAL key. 2. Press 1 , then press ENTER to enter SETUP. [ C O N F ] C H O O S E = 1 1 .
  • Page 78 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 5. Then press CR to back to main page. R s e t = 2 0 . 0 0 I r m s ( m a x ) = 5 0 . 0 V = 0 .

  • Page 79: Dc Load Simulation

    T R A N S F E R 3.11 DC Load Simulation The functions of the 63800 series loads are the same except the variations on input voltage, load current, and power ratings. There are five modes of operation: Constant Current (CC), Constant Resistance (CR), Constant Power (CP), Constant Voltage (CV) and DC Rectified mode (DC RECT).
  • Page 80 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 1. Press CONF./LOCAL key. 2. Press 1 , then press ENTER to enter SETUP. [ C O N F ] C H O O S E = 1 1 . S E T U P 2 .

  • Page 81: Dc Load Simulation -- Constant Current Mode

    Local Operation 3.12 DC Load Simulation -- Constant Current Mode current setting Load Current Input Voltage Figure 3-11 Constant Current Mode In CC mode, the Load will sink a current in accordance with the programmed value regardless of the input voltage. The CC mode can be set by CC key in the front panel, and user need to set the I (max) for load to test UUT output impedance.
  • Page 82 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual I s e t = 1 8 . 0 A = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 . 0 A Move the cursor by pressing ( ◄, ►...

  • Page 83: Dc Load Simulation -- Constant Resistance Mode

    Local Operation 3.13 DC Load Simulation -- Constant Resistance Mode Input Voltage Slope (R setting) Load Current Figure 3-12 Constant Resistance Mode In CR mode, the Load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. To prevent the load current change caused by the input voltage variation, the power source impedance should be as low as possible.
  • Page 84 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual R s e t = 4 0 . 0 A = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 . 0 A 2.

  • Page 85: Dc Load Simulation -- Constant Voltage Mode

    Local Operation If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again. 3.14 DC Load Simulation -- Constant Voltage Mode Voltage setting Input Voltage Load Current Figure 3-13 Constant Voltage Mode In CV mode the Load will sink current to control the voltage source according to programmed value.
  • Page 86 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual V s e t = 5 0 . 0 0 V I m a x = 4 5 . 0 0 A 3. Move the cursor by pressing ( ◄, ► ) to the command line of “I =”.

  • Page 87: Dc Load Simulation -- Constant Power Mode

    Local Operation 3.15 DC Load Simulation -- Constant Power Mode Load Power setting Current P = V * I Input Voltage Figure 3-14 Constant Power Mode In CP mode, the Load will sink a current according to the programmed power. This mode is operated under the F/W calculation.

  • Page 88: Dc Load Simulation -- Rectified Load Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual P s e t = 1 5 5 0 . 0 0 W I p ( m a x ) = 1 0 0 . 0 0 A 3. Move the cursor by pressing ( ◄, ► ) to the command line of “I (max)=”.
  • Page 89 Local Operation If users choose LINE SYNC as reference period then 63800 regards the input frequency of power line as load frequency. Moreover, users also can select load current waveform settings of ALL, POSITIVE and NEGATIVE. The three loading current waveforms are described separately as below.

  • Page 90: Crest Factor In Rectified Mode Explanation

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual POSITIVE I s e t = 1 0 . 0 0 A C F = 2 . 0 0 0 L I N E S Y N C = Y E S...
  • Page 91 Local Operation [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .

  • Page 92: Cc Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 3.17.1 CC Mode Under timing mode to enter CC timing mode press the CC key. In this mode the loading current (I ), rise and fall slew rate, maximum current value I...
  • Page 93 Local Operation I s e t = 1 8 . 0 A = 1 1 5 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 . 0 A T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 .

  • Page 94: Cr Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual I s e t = 1 8 . 0 A = 1 1 5 A / m s = 1 1 5 A / m s I p ( m a x ) = 2 0 . 0 A...
  • Page 95 Local Operation 2. Press 2 , 7 , . , 5 then press ENTER to change the value to “27.5”. R s e t = 2 7 . 5 Ω = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 0 .
  • Page 96 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual R s e t = 2 7 . 5 Ω = 1 6 0 A / m s = 1 6 0 A / m s I p ( m a x ) = 2 5 . 0 A...

  • Page 97: Cp Mode

    Local Operation 3.17.3 CP Mode Under timing mode to enter CP timing mode press the CP key. In this mode the loading power (P ), maximum current value I (max), as well as the timeout time and cutoff voltage of the UUT can be set. P s e t = 1 0 0 .
  • Page 98 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual P s e t = 3 0 0 . 0 0 W I p ( m a x ) = 1 6 . 0 A T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 .

  • Page 99: Cv Mode

    Local Operation 3.17.4 CV Mode Under timing mode to enter CV timing mode press the CV key. In this mode the loading voltage (V ), maximum current value I (max) , as well as the timeout time and cutoff voltage of the UUT can be set. V s e t = 1 0 0 .

  • Page 100: Rectified Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual V s e t = 2 0 0 . 0 0 V I p ( m a x ) = 2 9 . 0 A T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 .
  • Page 101 Local Operation The procedures of setting I = 15.00, CF = 2.000, LINE SYNC = NO, F = 50, I (max) = 39.0, Timeout = 00:00:10, and Cutoff V = 11.5, are described as below: 1. Move the cursor to the command line of “I =”.
  • Page 102 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual I s e t = 1 5 . 0 0 C F = 2 . 0 0 0 L I N E S Y N C = N O F = 1 2 0 I p ( m a x ) = 5 0 .

  • Page 103: Voltage And Current Monitor

    ALL, Positive or Negative. (Please refer section 3.16) 3.18 Voltage and Current Monitor The 63800 series have Voltage and Current monitoring outputs that allow users observe the loading current and the output voltage of UUT via oscilloscope with BNC connectors. These are useful tools when user wants to monitor the voltage and current waveform via scope.

  • Page 104: Save/Recall Setting

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 105 Local Operation EEPROM using the SAVE key. Later you can recall the settings from the specified file via RECALL key. There are ten files (file = 0 ~ 9) under each mode can be saved. AC Load will automatically load file 0 when it turns on. User defined settings can be stored in file 0 and recalled when AC load turns on.

  • Page 106: Parallel Setting

    The AC Load is capable of connecting up to five units in parallel, with CC/CR/CP/RLC/RLC CP modes available supporting AC operation only. The DC load in 63800 series only provides simple single unit mode, parallel function doesn’t be supported. If high power DC load is needed, Chroma 63200 series high power DC electronic load is recommended to use.
  • Page 107 Local Operation Figure 3-18 Parallel Connection Under parallel mode, master and slave can be determined by the POSITION setting 1~5. When POSITION = 1, this indicates the current AC Load unit is set as the master unit, when POSITION = 2~5 this indicates that the current AC Load unit is set as a slave unit. The TOTAL UNIT setting on the master unit is required to be set to ensure the load rating of the paralleled AC Loads.
  • Page 108 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 109 Local Operation [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 110 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 111 Local Operation [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L / S I N G L E P H A S E P O S I T I O N T O T A L...
  • Page 112 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual First SLAVE unit display S L A V E Second SLAVE unit display S L A V E When the TOTAL UNIT setting on the Master unit is inconsistent with what is detected by the AC Load, the following display will be shown.
  • Page 113 Local Operation M A S T E R P R E S S < E N T E R > C H E C K P A R A L L E L N E T W O R K . While loading if an AC Load is disconnected from the parallel network, the paralleled units will stop loading, and the following error message will be displayed.
  • Page 114 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .

  • Page 115: Three Phases Parallel Setting

    Local Operation 3.22 Three Phases Parallel Setting Each phase in 3-phase parallel mode can connect 5 sets in parallel, and it only can be operated in CC/CR/CP/RLC/RLC CP modes under AC load. The connection methods of parallel power include Y and Delta connection which are given as Figure 3-19 and Figure 3-20.
  • Page 116 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Figure 3-20 Parallel 3-Phase Delta Connection Users can set POSITION to determine master and slave as setting 3-phase parallel mode, POSITION setting is 1 ~ 5. If POSITION = 1, it means the AC load will be set as master. If POSITION = 2 ~ 5, it means AC load will be set as slave.
  • Page 117 Local Operation parallel total count. For example, 3-phase two sets of AC load in parallel, the setting methods are as below shown. Set Master(B1, C1) of B/C phase and Slave(A2~A5, B2~B5, C2~C5) of A, B, C three phases firstly, then set Master(A1) of A phase and confirm AC load total count.
  • Page 118 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L...
  • Page 119 Local Operation [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L / S I N G L E P H A S E P O S I T I O N T O T A L...
  • Page 120 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 121 Local Operation [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L P H A S E P O S I T I O N Phase C Select the next AC Load, and set it as the C phase Master (C1).
  • Page 122 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L...
  • Page 123 Local Operation [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L / S I N G L E P H A S E P O S I T I O N T O T A L...
  • Page 124 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 125 Local Operation [ P A R A L L E L ] O P E R A T I N G M O D E = P A R A L L E L P H A S E P O S I T I O N T O T A L U N I T 6.
  • Page 126 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual A phase SLAVE (A2) unit display S L A V E PHASE B B phase Master (B1) unit display I s e t = 9 0 . 0 C F = 1 . 4 1 4 P F = 1 .
  • Page 127 Local Operation PHASE C C phase Master (C1) unit display I s e t = 9 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a X ) = 1 3 5 . 0 V = 1 0 0 .
  • Page 128 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual M A S T E R P R E S S < E N T E R > C H E C K P A R A L L E L N E T W O R K .
  • Page 129 Local Operation [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .
  • Page 130 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual I s e t = 9 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a X ) = 1 3 5 . 0...

  • Page 131: Measurements

    Measurements Measurements The Load measures current, voltage, and peak current of the UUT. The maximum sampling rate of the ADCs for the voltage and current measurements is about 200,000 samples per second (200 kSPS). Voltage and current measurements are performed with 16-bit resolution of full-scale ratings.

  • Page 132: Ac Load Simulation

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual  Power factor (PF) Displays the power factor of the load and computed as: PF =  Crest factor (CF) Displays the crest factor of current and computed as: CF = where represents the peak value of current.

  • Page 133: Constant Current Mode

    Measurements 4.1.1 Constant Current Mode There are eleven measurement values under CC mode: V, I, P, S, Q, PF, CF, F, I +, I -, and THD. They are shown as pages below. Main page: I s e t = 0 . 5 0 0 C F = 1 .

  • Page 134: Constant Resistance Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 4.1.2 Constant Resistance Mode There are twelve measurement values under CR mode: V, I, P, S, Q, PF, CF, F, I +, I -, THD, and R. They are shown as pages below.

  • Page 135: Constant Power Mode

    Measurements 4.1.3 Constant Power Mode There are eleven measurement values under CP mode: V, I, P, S, Q, PF, CF, F, I +, I -, and THD. They are shown as pages below. Main page: P s e t = 4 5 0 0 . 0 C F = 1 .

  • Page 136: Rectified Load Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 4.1.4 Rectified Load Mode This mode is developed based on that load network that has three sub modes – RLC mode, CP mode and Inrush Current mode. 4.1.4.1 RLC Mode...

  • Page 137: Cp Mode

    Measurements Users can change the orders of the measurement parameters arbitrarily under CONF/LOCAL  4. DISPLAY SELECTION, please refer section 3.4.1 Setting the Configuration. 4.1.4.2 CP Mode There are eleven measurement values under CP mode: V, I, P, S, Q, PF, CF, F, I +, I -, and THD.

  • Page 138: Inrush Current Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual under CONF/LOCAL  4. DISPLAY SELECTION, please refers section 3.4.1 Setting the Configuration. 4.1.4.3 Inrush Current Mode There are seven measurement values under Inrush current mode: V, I, P, Q, I +, I -, and THD.

  • Page 139: Constant Current Mode

    Measurements 4.2.1 Constant Current Mode There are five measurement values under CC mode: V, I, P, V , and V . They are overshoot undershoot shown as pages below. Main page: I s e t = 4 0 . 0 A = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 .

  • Page 140: Constant Voltage Mode

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Main page: R s e t = 4 0 . 0 Ω = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 . 0 A V = 0 .

  • Page 141: Constant Power Mode

    Measurements Users can change the orders of the measurement parameters arbitrarily under CONF/LOCAL  4. DISPLAY SELECTION, please refer section 3.4.1 Setting the Configuration. 4.2.4 Constant Power Mode There are five measurement values under CP mode: V, I, P, V , and V .
  • Page 142 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Main page: I s e t = 1 0 . 0 0 A C F = 1 . 4 1 4 L I N E S Y N C = N O F = 1 2 0 .

  • Page 143: Protection Features

    Protection Features Protection Features The load includes the protection features: Over power, Over current, Over temperature, Fan fail, Abnormal Alarms for Over Voltage and Load Fail. Fan speed detection and OTP are built in the hardware circuit. The rest protective features are from estimation of the DSP.

  • Page 144: Out Of Frequency Range (Freq Err)

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Out of Frequency Range (FREQ ERR) If frequency measurement is out of range (45Hz ~ 440Hz), FREQ ERR (Frequency Error) will be generated and shown on the front panel. Under Operating Voltage Protection (UVP) While the load is operated to sink current, the voltage is dropped through the output impedance of the test unit.

  • Page 145: Theory Of Operation

    Theory of Operation Theory of Operation General The AC load consists of 10 printed circuit boards and other components. Each of the PCB has its specific function that will be described in the following subsection.

  • Page 146: Description Of Overall System

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Description of Overall System...

  • Page 147: Troubleshooting

    2. Airway is obstructed. Fan Fail 1. Fan damaged. Send the AC/DC load back to 2. Power cord bad contact. Chroma to change and to check the fan. Out of Frequency The measurement frequency is Make sure the frequency of UUT is Rage (FREQ ERR) out of range.

  • Page 149: Remote Operation

    Remote Operation Remote Operation General Information The AC Load can be controlled remotely through the GPIB or the RS-232C port. The GPIB port is commonly used, but the RS-232C port is helpful too. Technically speaking, the GPIB interface is quite different from the RS-232C interface. The GPIB interface is an 8-bit parallel data bus owning a host of bus commands for synchronization, and up to one Megabyte transfer rate.

  • Page 150: Introduction To Programming

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Service Request The AC Load sets the SRQ line true if there is an enabled service request condition. Remote/Local The AC Load powers up in local state. In local state, the front panel is operative, and the AC Load responds to the commands from GPIB.

  • Page 151: Basic Definition

    Remote Operation <CRD> Character Response Data: character string with maximum length of 12. <SRD> String Response Data: character string. 8.3.5 Basic Definition Command Tree Table: The commands of the AC Load are based on a hierarchical structure, also known as a tree system.

  • Page 152: Traversal Of The Command Tree

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual The separator (semicolon ;) separates the program message unit elements from one another in a program message. Example : CURR 20;CFAC 2<PMT> Program Message Terminator (<PMT>): A program message terminator represents the end of a program message. Three permitted terminators are: (1) <END>...

  • Page 153: Scpi Command Reference

    Remote Operation SCPI Command Reference 8.6.1 Common Command Dictionary Common commands begin with a “ * ” , and consist of three letters and/or one “ ? ” (query). Common commands and queries are listed alphabetically. *CLS Clear status Description: This command clears the following registers Standard Event Status register Questionable Status Event Standard Status Byte...
  • Page 154 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Setting Parameter : none Query Syntax : *IDN? Response Parameter: Chroma, 63804, 0, 1.00 *OPC Set the OPC bit of the Standard Event Status register Description: This command causes the interface to set the OPC bit（bit 0）of the Standard Event register when the AC Load has completed all pending operations.

  • Page 155: Measurement Subsystem

    Remote Operation 8.6.2 Measurement Subsystem 8.6.2.1 Current Measurement MEASure | FETCh [:SCALar] :CURRent Return RMS / real time value of the current :AMPLitude (AC Mode / DC Mode) :HOLD The highest peak current measurement is held :MAX Return peak current :CREStfactor? Return current crest factor :PEAK...

  • Page 156: Frequency Measurement

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Example : MEAS:CURR:CRES? MEASure[:SCALar]:CURRent:PEAK:NEGative? FETCh[:SCALar]:CURRent:PEAK:NEGative? Description: Return the negative peak current measured at the input of electronic load. Query Syntax : MEASure[:SCALar]:CURRent:PEAK:NEGative? FETCh[:SCALar]:CURRent:PEAK:NEGative? Response Parameter: <NR2> Example : MEAS:CURR:PEAK:NEG? MEASure[:SCALar]:CURRent:PEAK:POSitive? FETCh[:SCALar]:CURRent:PEAK:POSitive? Description: Return the positive peak current measured at the input of electronic load.

  • Page 157: Resistance Measurement

    Remote Operation Example : MEAS:POW? MEASure[:SCALar]:POWer:AMPLitude:MAX? FETCh[:SCALar]:POWer:AMPLitude:MAX? Description: Return the peak power measured at the input of electronic load. Query Syntax : MEASure[:SCALar]:POWer:AMPLitude:MAX? FETCh[:SCALar]:POWer:AMPLitude:MAX? Response Parameter: <NR2> Example : MEAS:POW:AMPL:MAX? MEASure[:SCALar] :POWer:APParent? FETCh[:SCALar] :POWer:APParent? Description: Return the apparent power being dissipated by the load in volt-amperes (VA). Query Syntax : MEASure[:SCALar] :POWer:APParent? FETCh[:SCALar] :POWer:APParent?

  • Page 158: Voltage Measurement

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 8.6.2.5 Voltage Measurement MEASure | FETCh [:SCALar] :VOLTage? Return RMS / real time value of the voltage :VOLTage (AC Mode / DC Mode) :AMPLitude :MAX? Return peak voltage :DC? Return average Vdc value of AC voltage of each cycle...

  • Page 159: Time Measurement

    Remote Operation FETCh[:SCALar]:VOLTage:UNDershoot? Description: Return the undershoot voltage in DC Mode. Query Syntax : MEASure[:SCALar]:VOLTage:UNDershoot? FETCh[:SCALar]:VOLTage:UNDershoot? Response Parameter : <NR2> Example : MEAS:VOLT:UND? 8.6.2.6 Time Measurement MEASure | FETCh [:SCALar] :TIME :HOLD Return the measurement value of hold up time (msec) :TRAN Return the measurement value of transfer time (sec) MEASure[:SCALar]:TIME:HOLD?

  • Page 160: Load Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual MEASure[:SCALar]:RLC:SET:LS? FETCh[:SCALar]:RLC:SET:LS? Description: Return the Ls measurement value of RLC CP mode Query Syntax : MEASure[:SCALar]:RLC:SET:LS? FETCh[:SCALar]:RLC:SET:LS? Response Parameter : <NR2> Example : MEASure[:SCALar]:RLC:SET:LS? MEASure[:SCALar]:RLC:SET:RL? FETCh[:SCALar]:RLC:SET:RL? Description: Return the R...
  • Page 161 Remote Operation Query Syntax : [LOAD:]ABA? Response Parameter: OFF|ON Example : ABA ON [LOAD:]MODE Description: This command selects the operating mode for AC/DC voltage input. The electronic load can be programmed to operate for constant current, constant power, constant resistance, constant voltage(DC mode only), RLC(AC mode only), RLC constant power(AC mode only), RLC inrush current(AC mode only), Rectified(DC mode only).

  • Page 162: Current Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Setting Parameter : none Example : PROT:CLE 8.6.3.1 Current Subsystem [LOAD:] CURRent [:LEVel] [:AMPLitude] [:AC] Set the RMS current Set the DC current [:DC] :FALL Set the fall slew rate(DC CC Mode)
  • Page 163 Remote Operation Query Syntax : [LOAD:]CURR[:LEV][:AMPL][:DC]:FALL? Response Parameter: <NR1> Example : CURR:FALL 200 [LOAD:]CURR[:LEV][:AMPL][:DC]:RISE Description: This command sets current rise slew rate of constant current mode. Setting Syntax : [LOAD:]CURR[:LEV][:AMPL][:DC]:RISE Setting Parameter : <NR1>, 63803/63804 Range: 4 ~ 600, 63802 Range: 4 ~ 240, Unit: A/msec Query Syntax : [LOAD:]CURR[:LEV][:AMPL][:DC]:RISE?

  • Page 164: Power Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual support parallel mode) Query Syntax : [LOAD:]CURR:LIMit? Response Parameter: 0.000~45.000 (CURR:MAX) Example : CURR:LIM? 8.6.3.2 Power Subsystem [LOAD:] POWer [:LEVel] [:AMPLitude] [:AC] Set the power in watts (AC Mode) Set the power in watts (DC Mode)

  • Page 165: Resistance Subsystem

    Remote Operation 8.6.3.3 Resistance Subsystem [LOAD:] RESistance [:LEVel] [:AMPLitude] [:AC] Set the resistance in ohms (AC Mode) Set the resistance in ohms (DC Mode) [:DC] :RISE Set the current rise slew rate of CR :FALL Set the current fall slew rate of CR :LIMit? Return the setting range of resistance [LOAD:]RESistance[:LEVel][:AMPLitude][:AC]...

  • Page 166: Voltage Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual ~ 2500.00 DC mode, 63804: 1.00~2500.00 , 63803: 1.25~2500.00, 63802: 2.22~2500.00 Example : RES:LIM? 8.6.3.4 Voltage Subsystem [LOAD:] VOLTage [:LEVel] [:AMPLitude] Set the RMS voltage [LOAD:]VOLTage[:LEV][:AMPL]:DC Description: This command sets the DC voltage of the electronic load. The electronic load insures that the load voltage stays constant at the set value.

  • Page 167: Power Factor Subsystem

    Remote Operation [LOAD:]CFAC:LIMit? Description: This command queue the setting range of CF. Query Syntax : [LOAD:]CFAC:LIMit? Response Parameter: 1.414~5.000 Example : CFAC:LIM? 8.6.3.6 Power Factor Subsystem [LOAD:] PFACtor [:LEVel] [:AMPLitude] [:AC] Set the power factor :LIMit Return the setting range of PF [LOAD:]PFACtor[:LEVel][:AMPLitude][:AC] Description: This command sets the power factor of the electronic load.

  • Page 168: Inrush Current Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [LOAD:] RLC:LS Description: It sets the value Ls, this command is only operating in AC RLC Mode. Setting Syntax : [LOAD:] RLC:LS Setting Parameter : <NR1>, Range: 0 ~ 9999, Unit: uH...

  • Page 169: Dc Rectified Subsystem

    Remote Operation Description: It sets the value C, this command is only operating in AC Inrush Current Mode. Setting Syntax : [LOAD:] INRush:CAP Setting Parameter : <NR1>, Range: 100 ~ 9999, Unit: uF Query Syntax : [LOAD:] INRush:CAP? Response Parameter: <NR1> Example : INR:CAP 470 [LOAD:] INRush:LS...

  • Page 170: Time Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Description: It sets SYNC mode. When SYNC sets as 1, it indicates the system uses line sync to do synchronization. When SYNC sets as 0, it indicates the system uses the frequency users set to do synchronization.

  • Page 171: System Subsystem

    Remote Operation 8.6.4 System Subsystem 8.6.4.1 Recall Default Subsystem SYSTem :DEFault :RECAll Recall default setting value CONFigure:DEFault:RECAll Description: This command recalls default setting value. Setting Syntax : SYSTem:DEFault:RECAll Setting Parameter : <NR1>, 0 | OFF | 1 | ON Example : SYST:DEF:RECA ON 8.6.4.2 Remote Subsystem SYSTem...

  • Page 172: Setup Subsystem

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Description: This command sets the RS-232 stop bit length of the electronic load. Setting Syntax : SYSTem:COMMunicate:SERial:SBIT Setting Parameter : 1 | 2 Query Syntax : SYSTem:COMMunicate:SERial:SBIT? Response Parameter: 1 | 2...

  • Page 173: Parallel Subsystem

    Remote Operation 8.6.5 Parallel Subsystem :STAT PAR:STAT Description: It returns the status of the current parallel mode. When the response parameter is 0, it indicates parallel mode error. When the response parameter is 1, it indicates single phase parallel. When the response parameter is 2, it indicates three phases parallel. Query Syntax : PAR:STAT? Response Parameter: <NR1>, 0 | 1 | 2...

  • Page 175: Status Reporting

    Status Reporting Introduction This chapter covers the status data structure of Chroma 63800 series electronic load as shown in Figure 9-1 (on the next page). The standard registers, such as the Event Status register group, the Output Queue, the Status Byte and Service Request Enable registers perform standard GPIB functions and are defined in IEEE-488.2 Standard Digital Interface for...

  • Page 176: Status Registers

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Status Registers The Questionable Status registers inform you one or more questionable status ■ conditions, which indicate certain errors or faults have occurred. Table 9-1 lists the questionable status conditions that are applied to the electronic load.
  • Page 177 Status Reporting Query Syntax STATus:QUEStionable:EVENt? Parameters none Return Parameters <NR1> STATus:QUEStionable:CONDition? Description This query is the value of the Questionable Condition register. This register is a read-only register, which holds the real time (unlatched) Questionable status of the AC load. Query Syntax STATus: QUEStionable:CONDition? Parameters...

  • Page 178: Output Queue

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Output Queue  The Output Queue stores output messages until they are read from the electronic load.  The Output Queue stores messages sequentially on a FIFO (First-In, First-Out) basis.

  • Page 179: Service Request Enable Register

    Status Reporting Table 9-4 Bit Description of Status Byte Value Bit Mnemonic Bit Meaning Weight Channel Summary. It indicates if an enabled channel event CSUM has occurred. It is affected by Channel Condition, Channel Event and Channel Summary Event registers. Questionable.

  • Page 181: Verification

    10. Verification 10.1 Introduction The chapter includes operation and specification test procedures of Chroma 63800 series AC/DC Electronic Load. The tests are performed via model 63800 or needed equipment. The equipment required are listed as Table 10-1 shown. About equipment connection please refer Test Environment Setup and test procedure please refer AC Performance Test.
  • Page 182 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual Figure 10-1: AC Load, AC Source, Power Analyzer and DVM Wiring Diagram 2. Figure 10-2: Use DC Source with high voltage or high current. Current Shunt follows test current to select different ranges, the withstanding current of wire from Source to Shunt and Load needs 45A above.

  • Page 183: Ac Performance Test

    Verification 10.4 AC Performance Test 10.4.1 I monitor & CF Measurement Verification AC wiring diagram is as Figure 10-1, please switch AC Load to CF only mode. The procedures are described as follows. 1. Press CONF./LOCAL. 2. Press 1 and ENTER to enter SETUP. (More information about the display, please refer 3.6.1 BOTH mode).
  • Page 184 Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual [ C O N F ] C H O O S E = 1 1 . S E T U P 2 . R E M O T E 3 . C A L I B R A T I O N 4 .

  • Page 185: Cr Mode Setting Verification

    Verification Table 10-3 Meter & Load Source Setting Load Setting Measurement Model Voltage Frequency Current (max) I Specification (A) (Hz) 4.959~5.041 63802 17.946~18.054 4.923~5.077 63803 45/440 35.892~36.108 4.905~5.095 63804 44.865~45.135 10.4.3 CR Mode Setting Verification 1. Press CR to enter CR mode. 2.

  • Page 186: Thd Measurement Verification

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 6. AC Source settings are shown as Table 10-5. Please follow the model to set W, PF & (max). According to the model to confirm if the values of Meter & Load meet to that in Table 10-5.

  • Page 187: Dc Performance Test

    Verification 4. Please confirm if the values of Meter, Load & DVM meet to that in Table 10-7. Table 10-7 Meter & Load Source Setting V_Mon Measurement Frequency Voltage V Specification Specification (Hz) 9.64~10.36 0.179~0.221 45/440 350V 349.30~350.70 6.945~7.055 10.5 DC Performance Test 10.5.1 I monitor Measurement Verification DC Source wiring as Figure 10-2, switch AC Load to DC mode, the procedures are as follows.

  • Page 188: Cc Mode Operation & Measurement Verification

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 5. Press CC to return to main screen of DC mode. 6. High current DC Source settings are shown as Table 10-8, switch DVM2 measurement terminal to Rear. Please follow the model under CC mode to set loading current & I (max).

  • Page 189: Cp Mode Operation Verification

    Verification Table 10-10 Meter & Load Source Setting Load Setting Measurement Model Voltage Current R (Ω) R Specification (Ω) (max) 81.286~129.908 63802 2.965~3.036 71.174~168.067 63803 1.484~1.517 66.445~202.020 63804 1.187~1.213 10.5.4 CP Mode Operation Verification 1. Press CP to return to main screen of DC CP mode. 2.

  • Page 190: V_Monitor, Voltage Measurement Verification

    Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual 10.5.6 V_Monitor, Voltage Measurement Verification 1. Press CC to enter CC mode. 2. Use high voltage DC Source, the settings are as Table 10-13. 3. Switch DVM2 measurement terminal to Front, it is for measuring V_Mon voltage.

  • Page 191: Appendix A: Rs-232C Connection

    Short Switch Input /Output Short Switch Output Input Note (1) Pin 1 and pin 9 (+5V) are for 63800 series Remote Controller only. (2) The short switch pins, pin 4 and pin 6, will be shorted when SHORT key is pressed.

  • Page 193: Appendix B: Pin Assignment Of Ttl I/O Signals

    Appendix B: Pin Assignment of TTL I/O Signals Appendix B: Pin Assignment of TTL I/O Signals 9-Pin D-Type Male Connector: Pin No. Signal Pin No. Signal Load-ON/OFF Transient-ON/OFF Fail External Load-ON/OFF Short AC LOAD ON When AC Load is at the “load on” status, this pin turns into HIGH and turns into LOW when the load is off.

  • Page 195: Appendix C: Notice

    Appendix C: Notice Appendix C: Notice 1. CC and CP mode:  When loading under high frequency, for CF>1.8 and the minimum PF, if the voltage drops under 7.5V, the loading current will decrease automatically to ensure the voltage is kept above 7.5V. At this moment, no warning message will be shown on the display. ...
  • Page 197 Chroma’s Continuous Quality Process User Manual Customer Feedback Chroma welcomes all comments and recommendations to improve this publication in the future editions. Please scan the QR code below or click the URL http://www.chromaate.com/survey?n=793ce6db-17ef-4cd3-b0de-8bbd09aa38e0 to fill in the customer feedback form. Thank you!
  • Page 198 66 Huaya 1st Road, Guishan, Taoyuan 33383, Taiwan 台灣桃園市 33383 龜山區 華亞一路 66 號 T +886-3-327-9999 F +886-3-327-8898 Mail: info@chromaate.com http://www.chromaate.com Copyright by CHROMA ATE INC. All Rights Reserved. All other trade names referenced are the properties of their respective companies.

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