Chroma 63800 User Manual

Programmable AC/DC Electronic Load

63800 Series

Operation & Programming Manual

Version 2.0

July 2017

ii

Legal Notices

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. Chroma ATE INC. shall not be held liable for errors con tained herein or dir ect, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material.

CHROMA ATE INC. 66 Huaya 1st Road, Guishan, Taoyuan 33383, Taiwan

Copyright Notices. Copyright 2009 - 2017 Chroma ATE INC., all rights reserved. Reproduction, adaptation, or translation of this document without prior written permission is prohibited, except as allowed under the copyright laws.

iii

Warranty

All of Chroma’s instruments are warranted against defects in material and workmanship for a period of one year from date of shipment. Chroma agrees to repair or replace any assembly or component found to be defective, under normal use during this period. Chroma’s obligation under this warranty is limited solely to repairing any such instrument, which in Chroma’s sole opinion proves to be defective within the scope of the warranty when returned to the factory or to an authorized service center. Purchaser is responsible for the shipping and cost of the service item to Chroma factory or service center. Shipment should not be made without prior authorization by Chroma.

This warranty does not apply to any p roduc ts rep aired o r al tered by persons not authorized by Chroma, or not in accordance with instructions furnished by Chroma. If the instrument is defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will be billed at cost.

Chroma assumes no responsibility for its product being used in a hazardous or dangerous manner either alone or in conjunction with other equipment. High voltage used in some instruments may be dangerous if misused. Special disclaimers apply to these instruments. Chroma assumes no liability for secondary charges or consequential damages and in any event, Chroma’s liability for breach of warranty under any contract or otherwise, shall not exceed the purchase price of the specific instrument shipped and against which a claim is made.

Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty o f t he resul ts 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.

CHROMA ATE INC.

66 Huaya 1st Road, Guishan, Taoyuan 33383, Taiwan Tel: 886-3-327-9999 Fax: 886-3-327-2886 e-mail: info@chromaate.com

http://www.chromaate.com

iv

Material Contents Declaration

Hazardous Substances

Lead

Mercury

Cadmium

Hexavalent

Polybrominated

Polybromodiphenyl

Ethers

Selected Phthalates

Pb

Hg

Cd

Cr6+

PBB/PBDE

DEHP/BBP/DBP/DIBP

“O” indicates that the level of the specified chemical substance is less than the threshold level specified in the standards of SJ/T

“ specified in the standards of SJ/T

Remarks: Directive 2011/65/EU.

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>.

Part Name

PCBA

CHASSIS

ACCESSORY

PACKAGE

Chromium

O O O O O O O O O O O O O O O O O O O O O O O O

Biphenyls/

Group

-11363-2006 and EU Directive 2011/65/EU.

” indicates that the level of the specified chemical substance exceeds the threshold level

-11363-2006 and EU Directive 2011/65/EU.

The CE marking on product is a declaration of product compliance with EU

Disposal

Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being . W hen replacing old appliances with new one, the retailer is legally obligated to take back your old appliances for disposal at least for free of charge.

v

Hazardous Substances

Lead

Mercury

Cadmium

Hexavalent

Polybrominated

Polybromodiphenyl

Ethers

Selected Phthalates

Pb

Hg

Cd

Cr6+

PBB/PBDE

DEHP/BBP/DBP/DIBP

“O” indicates that the level of the specified chemical substance is less than the threshold level specified in the standards of

“ specified in the standards of SJ/T

1.

2. environment specified in each product’s specification.

Part Name

PCBA 

CHASSIS

ACCESSORY

PACKAGE

Chromium

O O O O O

 

O O O O O O O O O O

O O O O O O

Biphenyls/

Group

SJ/T-11363-2006 and EU Directive 2011/65/EU.

” indicates that the level of the specified chemical substance exceeds the threshold level

-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.

The environment-friendly usage period of the product is assumed under the operating

Disposal

Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being . W hen replacing old appliances with new one, the retailer is legally obligated to take back your old appliances for disposal at least for free of charg e.

vi

vii

Safety Summary

Do not operate the instrument in the presence o f flammable gases

Operating personnel must not remove the cover of the instrument.

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. 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.

BEFORE APPLYING POWER

Verify that the power is set to match the rated input of this power supply.

PROTECTIVE GROUNDING

Make sure to connect the protective grounding to prevent an electric shock before turning on the power.

NECESSITY OF PROTECTIVE GROUNDING

Never cut off the internal or external protective grounding wire, or disconnect the wiring of protective grounding terminal. Doing so will cause a potential shock hazard that may bring injury to a person.

FUSES

Only fuses with the required rated current, voltage, and specified type (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or fire hazard.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

or fumes.

DO NOT REMOVE THE COVER OF THE INSTRUMENT

Component replacement and internal adjustment can be done only by qualified service personnel.

viii

Safety Symbols

to avoid any personal

The Notice sign highlights an essential operating or maintenance procedure, condition, or statement.

WARNING

CAUTION

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 injury.

Protective grounding terminal: This symbol indicates that the terminal must be connected to ground before operation of the equipment to protect against electrical shock in case of a fault.

Functional grounding: To identify an earth (ground) terminal in cases where the protective ground is not explicit ly st a ted. This symbol indicates the power connector does not provide grounding.

Frame or chassis: To identify a frame or chassis terminal.

Alternating Current (AC)

Direct Current (DC) / Alternating Current (AC)

Direct Current (DC)

Push-on/Push-off power switch

The WARNING sign highlights an essential operating or maintenance procedure, practice, condition, statement, etc., which if not strictly observed, could result in injury to, or death of, personnel or long term health hazards.

The CAUTION sign highlights an essential operating or maintenance procedure, practice, condition, statement, etc., which if not strictly observed, could result in damage to, or destruction of, equipment.

ix

Revision History

Date

Version

Revised Sections

Feb. 2009

1.0

Complete this manual

Apr. 2009

1.1

Modify the fuse spec. of AC Input in the section of “Specifications”.

Oct. 2009

1.2

Add the following sections:

- the section of “PHASE Subsystem”

Modify the following sections:

Setting Timing Mode Values

- the descriptions in the section of “Resistance Subsystem”

Mar. 2011

1.3

Add the chapter of “Verification”.

Dec. 2011

1.4

Add the description in the following sections:

- the section of “Transient Over Pressure Protection”.

Modify the following sections:

Setting”.

Jul. 2012

1.5

Modify “CE Declaration”.

Nov. 2012

1.6

Add the section of “Power Fail (PWRFAIL)”.

Modify the following sections:

- command description of “[LOAD:]RESistance:LIMit?” in the

The following lists the additions, deletions and modifications in this manual at each revision.

- the section of “Three Phases Parallel Setting”

- the section of “Parallel Subsystem”

- “Constant Power Mode” and “DAM Accuracy (>70Hz)” in the section of “Specifications”

- the displayed menus in the section of “Local Operation”

- the displayed menus in the section of “BOTH”

- the displayed menus in the section of “CC Mode”

- the displayed menu in the section of “ for Transfer Time”

- the displayed menu in the section of “DC Load Simulation”

- the displayed menu in the section of “Short Circuit On/Off”

- the descriptions in the section of “Parallel Setting”

- the descriptions in the section of “Current Subsystem”

- the descriptions in the section of “Power Subsystem”

- Note in the section of “The Front Panel”.

- Notices in the sections of “AC Load Simulation”, “DC Load Simulation” and “DC Load Simulation -- Constant Voltage Mode”.

- Using limit of DC constant voltage mode.

- the descriptions in the sections of “Inspection”, “Ip(max) Setting and Automatic Bandwidth Adjustment (ABA) Mode” and “Parallel

- the descriptions in the section of “Specifications”.

- the Notice content in the section of “Ip(max) Setting and Automatic Bandwidth Adjustment (ABA) Mode”.

- Figure 3-18 in the section of “Parallel Setting”.

- Figure 3-19 and 3-20 in the section of “Three Phases Parallel Setting”.

- the description of table in the section of “LOAD Subsystem ”.

x

section of “Resistance Subsystem”.

- the description of Table 9-1 in the section of “Status Registers”.

V monitor, Voltage

Measurement Verification”.

Mar. 2013

1.7

Modify the fuse specification to 3A, 250V in the section of “Specifications”.

Oct. 2016

1.8

Modify “Declaration of Conformity”.

Mar. 2017

1.9

Modify the following:

- “CE Declaration of Conformity”.

Add “User Manual Customer Feedback”.

Jul. 2017

2.0

Delete the power cable of standard accessory table in the section of

- the description of Table 10-7 in the section of “

- “Material Contents Declaration”。

“Inspection”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

xi

Table of Contents

1. General Information .................................................................................................. 1-1

1.1 Introduction ......................................................................................................... 1-1

1.2 Overview of Key Features ................................................................................... 1-1

1.3 Description .......................................................................................................... 1-1

1.4 Specifications ...................................................................................................... 1-2

1.5 Names of Parts ................................................................................................... 1-5

1.5.1 The Front Panel ....................................................................................... 1-5

1.5.2 The Rear Panel ....................................................................................... 1-8

2. Installation ................................................................................................................. 2-1

2.1 Introduction ......................................................................................................... 2-1

2.2 Inspection ........................................................................................................... 2-1

2.3 Installing ............................................................................................................. 2-1

2.3.1 Preparation for Use ................................................................................. 2-1

2.3.2 Changing Line Voltage ............................................................................ 2-1

2.3.3 Turn-On Self-Test .................................................................................... 2-2

2.4 Application Connection ....................................................................................... 2-3

2.4.1 Load Connections ................................................................................... 2-3

3. Local Operation ......................................................................................................... 3-1

3.1 Introduction ......................................................................................................... 3-1

3.2 Local/Remote Control ......................................................................................... 3-2

3.3 Modes of Operation ............................................................................................ 3-2

3.4 Local Operation................................................................................................... 3-3

3.4.1 Setting the Configuration ......................................................................... 3-3

3.4.2 External ON/OFF ..................................................................................... 3-6

3.4.3 Going To Local ........................................................................................ 3-7

3.4.4 Online Change Loading ........................................................................... 3-7

3.4.5 Load ON/OFF .......................................................................................... 3-7

3.4.6 The Relationship of Crest Factor and Power Factor ................................ 3-8

3.4.7 Ip(max) Setting and Automatic Bandwidth Adjustment (ABA) Mode ....... 3-10

3.4.8 Lock Mode ............................................................................................. 3-11

3.5 AC Load Simulation .......................................................................................... 3-13

3.6 AC Load Simulation -- Constant Current Mode ................................................. 3-15

3.6.1 BOTH .................................................................................................... 3-16

3.6.2 CF Only ................................................................................................. 3-18

3.6.3 PF Only ................................................................................................. 3-20

3.7 AC Load Simulation -- Constant Resistance Mode ............................................ 3-22

3.8 AC Load Simulation -- Constant Power Mode ................................................... 3-24

3.8.1 BOTH .................................................................................................... 3-24

3.8.2 CF Only ................................................................................................. 3-27

3.8.3 PF Only ................................................................................................. 3-28

3.9 AC Load Simulation -- Rectified Load Mode ...................................................... 3-29

3.9.1 RLC Mode ............................................................................................. 3-29

3.9.2 CP Mode ............................................................................................... 3-31

3.9.3 Inrush Current Mode.............................................................................. 3-34

3.10 AC Load Simulation -- Timing Mode .............................................................. 3-37

3.10.1 CC Mode ............................................................................................... 3-38

3.10.2 CR Mode ............................................................................................... 3-43

3.10.3 CP Mode ............................................................................................... 3-45

3.10.4 Rectified Load Mode.............................................................................. 3-46

3.10.5 Setting Timing Mode Values for Transfer Time ...................................... 3-48

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

xii

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 DC Load Simulation -- Constant Power Mode ............................................... 3-59

3.16 DC Load Simulation -- Rectified Load Mode.................................................. 3-60

3.16.1 Crest Factor in Rectified Mode Explanation ........................................... 3-62

3.17 DC Load Simulation -- Timing Mode.............................................................. 3-62

3.17.1 CC Mode ............................................................................................... 3-64

3.17.2 CR Mode ............................................................................................... 3-66

3.17.3 CP Mode ............................................................................................... 3-69

3.17.4 CV Mode ............................................................................................... 3-71

3.17.5 Rectified Mode ...................................................................................... 3-72

3.18 Voltage and Current Monitor ......................................................................... 3-75

3.19 Short Circuit On/Off ....................................................................................... 3-75

3.20 Save/Recall Setting ....................................................................................... 3-76

3.21 Parallel Setting .............................................................................................. 3-78

3.22 Three Phases Parallel Setting ....................................................................... 3-87

4. Measurements ........................................................................................................... 4-1

4.1 AC Load Simulation ............................................................................................ 4-2

4.1.1 Constant Current Mode ........................................................................... 4-3

4.1.2 Constant Resistance Mode...................................................................... 4-4

4.1.3 Constant Power Mode ............................................................................. 4-5

4.1.4 Rectified Load Mode................................................................................ 4-6

4.1.4.1 RLC Mode .......................................................................................................... 4-6

4.1.4.2 CP Mode ............................................................................................................ 4-7

4.1.4.3 Inrush Current Mode .......................................................................................... 4-8

4.2 DC Load Simulation ............................................................................................ 4-8

4.2.1 Constant Current Mode ........................................................................... 4-9

4.2.2 Constant Resistance Mode...................................................................... 4-9

4.2.3 Constant Voltage Mode ......................................................................... 4-10

4.2.4 Constant Power Mode ........................................................................... 4-11

4.2.5 Rectified Load Mode.............................................................................. 4-11

5. Protection Features .................................................................................................. 5-1

5.1 Over Voltage Protection (OVP) ........................................................................... 5-1

5.2 Over Current Protection (OCP) ........................................................................... 5-1

5.3 Over Power Protection (OPP) ............................................................................. 5-1

5.4 Over Temperature Protection (OTP) ................................................................... 5-1

5.5 Fan Fail ............................................................................................................... 5-1

5.6 Out of Frequency Range (FREQ ERR) ............................................................... 5-2

5.7 Under Operating Voltage Protection (UVP) ......................................................... 5-2

5.8 Load Fail (LDF) ................................................................................................... 5-2

5.9 Transient Over Pressure Protection(OVPP) ........................................................ 5-2

5.10 Power Fail (PWRFAIL) ........................................................................................ 5-2

6. Theory of Operation .................................................................................................. 6-1

6.1 General ............................................................................................................... 6-1

6.2 Description of Overall System ............................................................................. 6-2

7. Troubleshooting ........................................................................................................ 7-1

7.1 General ............................................................................................................... 7-1

7.2 Troubleshooting .................................................................................................. 7-1

8. Remote Operation ..................................................................................................... 8-1

8.1 General Information ............................................................................................ 8-1

Programmable AC Electronic Load 63800 Series Operation & Programming Manual

xiii

8.1.1 Setting the GPIB Address and RS-232C Parameters .............................. 8-1

8.1.2 Wire Connection of RS-232C .................................................................. 8-1

8.2 The GPIB Capability of the AC Load ................................................................... 8-1

8.3 Introduction to Programming ............................................................................... 8-2

8.3.1 Conventions ............................................................................................ 8-2

8.3.2 Numerical Data Formats .......................................................................... 8-2

8.3.3 Boolean Data Format .............................................................................. 8-2

8.3.4 Character Data Format ............................................................................ 8-2

8.3.5 Basic Definition ........................................................................................ 8-3

8.4 Traversal of the Command Tree ......................................................................... 8-4

8.5 Execution Order .................................................................................................. 8-4

8.6 SCPI Command Reference ................................................................................. 8-5

8.6.1 Common Command Dictionary ................................................................ 8-5

8.6.2 Measurement Subsystem ........................................................................ 8-7

8.6.2.1 Current Measurement ........................................................................................ 8-7

8.6.2.2 Frequency Measurement ................................................................................... 8-8

8.6.2.3 Power Measurement ......................................................................................... 8-8

8.6.2.4 Resistance Meas ur ement .................................................................................. 8-9

8.6.2.5 Voltage Measurement ..................................................................................... 8-10

8.6.2.6 Time Measurement .......................................................................................... 8-11

8.6.2.7 RLC Measurement........................................................................................... 8-11

8.6.3 LOAD Subsystem .................................................................................. 8-12

8.6.3.1 Current Subs ystem .......................................................................................... 8-14

8.6.3.2 Power Subsystem ............................................................................................ 8-16

8.6.3.3 Resistance Subsystem .................................................................................... 8-17

8.6.3.4 Voltage Subsystem .......................................................................................... 8-18

8.6.3.5 Crest Factor Subsystem .................................................................................. 8-18

8.6.3.6 Power Factor Subsystem ................................................................................ 8-19

8.6.3.7 RLC Subsystem ............................................................................................... 8-19

8.6.3.8 Inrush Current Subsystem ............................................................................... 8-20

8.6.3.9 DC Rectified Subsystem .................................................................................. 8-21

8.6.3.10 Time Subsystem ............................................................................................ 8-22

8.6.4 System Subsystem ................................................................................ 8-23

8.6.4.1 Recall Default Subsystem ............................................................................... 8-23

8.6.4.2 Remote Subsystem ......................................................................................... 8-23

8.6.4.3 Setup Subsystem ............................................................................................. 8-24

8.6.5 Parallel Subsystem ................................................................................ 8-25

8.6.6 PHASE Subsystem ............................................................................... 8-25

9. Status Reporting ....................................................................................................... 9-1

9.1 Introduction ......................................................................................................... 9-1

9.2 Register Information in Common ......................................................................... 9-1

9.3 Status Registers.................................................................................................. 9-2

9.3.1 Status Subsystem Commands ................................................................ 9-2

9.4 Output Queue ..................................................................................................... 9-4

9.5 Standard Event Status ........................................................................................ 9-4

9.6 Status Byte Register ........................................................................................... 9-4

9.7 Service Request Enable Register ....................................................................... 9-5

10. Verification ...................................................................................................... 10-1

10.1 Introduction ................................................................................................... 10-1

10.2 Equipment Requirement................................................................................ 10-1

10.3 Test Environment Setup ................................................................................ 10-1

10.4 AC Performance Test .................................................................................... 10-3

10.4.1 I monitor & CF Measurement Verification .............................................. 10-3

10.4.2 CC Mode Setting & Measurement Verification ....................................... 10-3

10.4.3 CR Mode Setting Verification ................................................................. 10-5

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

xiv

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 CC Mode Operation & Measurement Verification .................................. 10-8

10.5.3 CR Mode Operation Verification ............................................................ 10-8

10.5.4 CP Mode Operation Verification ............................................................ 10-9

10.5.5 CV Mode Operation Verification ............................................................ 10-9

10.5.6 V_Monitor, Voltage Measurement Verification ..................................... 10-10

Appendix A: RS-232C Connection .................................................................................. A-1

Appendix B: Pin Assignment of TTL I/O Signals ........................................................... B-1

Appendix C: Notice .......................................................................................................... C-1

General Information

1-1

1. General Information

1.1 Introduction

This manual contains specifications, installation, operation, and programming instructions of 63800 series high power electronic loads. All the machines are tested according to safety standard EN61010-1: TYPE POLLUTION II and INST A L LT ION CATEGORY II.

1.2 Overview of Key Fe atures

 Local operation on front panel keypad.  Remote control via GPIB, RS-232C interfaces.  Photo-couple isolation supplies true floating Load.  Automatic fan speed control to reduce audio noise.  Operation modes: CC, CR, CP @ constant load modes; RLC, CP, Inrush Current @

rectified load modes; CC, CR, CP, CV, DC Rectified @ DC load simulation.

 Programmable load value, power factor (PF) and crest factor (CF).  Minimum input resistance allows load to sink high current even with low input voltage.  10 sets of memories to save/recall user-definable setups.  16-bit A/D converter with precision measurement.  Short circuit simulation.  Isolated voltage and current monitoring waveforms output.

1.3 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.

Figure 1-1 The Front Panel of the Electronic Load

There are two groups of keypads on the electronic load front panel shown in Figure 1-1. They are Function keypad and Entry keypad from left to right.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

1-2

1. The equipment is for indoor use only.

7. The typical temperature coefficient is 100ppm.

or IV.

CAUTION

1.4 Specifications

* The specifications of Load are listed from the next page on.

2. The altitude up to 2000 meters is allowed to use the equipment.

3. All specifications are tested under 20°C ∼ 30°C except otherwise stated.

4. The range for operation temperature is 0°C ∼ 40°C.

5. The relative humidity is from 10% to 90%.

6. The specifications of current accuracy are tested after the i nput is appl ied for 30 seconds.

This equipment is not intended for performing measurements on CAT III

1-3

SPECIFICATION

Model

63802

63803

63804

Power

1,800W

3,600W

4,500W

Current

0 ∼ 18A

rms

(54 A

peak

)

0 ∼ 36A

rms

(108 A

peak

)

0 ∼ 45A

rms

(135 A

peak

)

50 ∼ 350V

(500

V

peak

)

50 ∼ 350V

(500

V

peak

)

50 ∼ 350V

(500

V

peak

)

Frequency

45 ∼ 440Hz, DC

AC Section

Constant Current Mode

0 ∼ 18A

,

Programmable

0 ∼ 36A

,

Programmable

0 ∼ 45A

,

Programmable

Accuracy*1

0.1% + 0.2%F.S.

Resolution

2mA

5mA

Constant Resistance Mode

2.77Ω ~ 2.5kΩ, Programmable

1.39Ω ~ 2.5kΩ,

Programmable

1.11Ω ~ 2.5kΩ,

Programmable

Accuracy

0.5% + 0.5%F.S.

Resolution*4

20µS

50µS

Constant Power Mode

Range

1,800W,

Programmable

3,600W,

Programmable

4,500W,

Programmable

Accuracy

0.2% + 0.3%F.S.

Resolution

0.375W

1.125W

Crest Factor (under CC, CP modes)

Range*2

1.414 ∼ 5.0,

Programmable

1.414 ∼ 5.0,

Programmable

1.414 ∼ 5.0,

Programmable

Accuracy

(0.5% / I

) + 1%

F.S.

(0.5% / I

) + 1%

F.S.

(0.5% / I

) + 1%

F.S.

Resolution

0.005

Power Factor

Range

0 ∼ 1 lead or lag,

Programmable

0 ∼ 1 lead or lag,

Programmable

0 ∼ 1 lead or lag,

Programmable

Accuracy

1%F.S.

Resolution

0.001

Rectified Load Mode

Operating Frequency

45Hz ~ 70Hz

RLC mode

Parameter: Ip(max), Rs, Ls, C, RL

Constant Power

Parameter: Ip(max),

= 0.4 ∼ 0.75

Parameter: Ip(max),

= 0.4 ∼ 0.75

Parameter: Ip(max),

= 0.4 ∼ 0.75

Parameter: Ip(max), Rs, Ls, C, RL, Phase

80A (peak current)

160A (peak current)

200A (peak current)

Rs Range

0 ~ 9.999Ω

Ls Range

0 ~ 9999µH

C Range

100 ~ 9999µF

RL Range

2.77 ~ 9999.99Ω

1.39 ~ 9999.99Ω

1.11 ~ 9999.99Ω

DC Section

Voltage Range

7.5V ~ 500V

Current Range

0A ~ 18A

0A ~ 36A

0A ~ 45A

Slew Rate

4 ~ 240A/ms

4 ~ 600A/ms

General Information

Voltage

Range

rms

Mode

Inrush Current Mode

rms

Power setting = 200W ∼ 1,800W, PF

rms

Power setting = 200W ∼ 3,600W, PF

rms

Power setting = 200W ∼ 4, 500W, PF

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

1-4

Rise Time

75µs

Min. Operating Voltage

7.5V

Operating Mode

CC, CV, CR, CP, DC Rectified

Short Circuit Simulation

Constant Current Mode

Range

0 ∼ 18A,

Programmable

0 ∼ 36A,

Programmable

0 ∼ 45A,

Programmable

Accuracy*1

0.1% + 0.2%F.S.

Resolution

2mA

5mA

Constant Resistance Mode

Range

2.22Ω ~ 1kΩ,

Programmable

1.25Ω ~ 1kΩ,

Programmable

1.00Ω ~ 1kΩ,

Programmable

Accuracy

0.5% set + 0.5%F.S.

Resolution*4

20µS

50µS

Constant Power Mode

Range

1,800W,

Programmable

3,600W,

Programmable

4,500W,

Programmable

Accuracy

0.2% + 0.3%F.S.

Resolution

0.375W

1.125W

Constant Voltage Mode

Range

7.5V ∼ 500V,

Programmable

7.5V ∼ 500V,

Programmable

7.5V ∼ 500V,

Programmable

Accuracy

0.3% + 0.3%F.S.

Resolution

0.01V

Measurement Section

DVM Range

350V

rms

(500 V

peak

)

350V

rms

(500 V

peak

)

350V

rms

(500 V

peak

)

DVM Accuracy

0.1% + 0.1%F.S.

DVM Resolution

10 mV

DAM Range

18A

rms

(80 A

peak

)

36A

rms

(160.00 A

peak

)

36A

rms

(200.00 A

peak

)

DAM Accuracy (<70Hz)

DAM Accuracy (>70Hz)

0.1%(1+CF2×kHz) +

0.2%F.S.

0.1%(1+CF2×kHz) +

0.2%F.S.

0.1%(1+CF2×kHz) +

0.2%F.S.

DAM Resolution

1.0 mA

2.5 mA

True Power

Range

0 ~ 1,800W

0 ~ 3,600W

0 ~ 4,500W

Accuracy

0.2% + 0.3%F.S.

Apparent Power

Range

0 ~ 1,800VA

0 ~ 3,600VA

0 ~ 4,500VA

Accuracy

0.2% + 0.3%F.S.

Other s parame ters

*3

Q(VAR), CF, PF, Freq, R, Ip-, Ip+, THDv

Others

±500V/±10V

(Isolated)

±500V/±10V

(Isolated)

±500V/±10V

(Isolated)

±200A/±10V

(Isolated)

±200A/±10V

(Isolated)

OCP: 19.2A

;

OPP: 1,920W; OTP

OCP: 38.4A

;

OPP: 3,840W; OTP

OCP: 48A

;

OPP: 4,800W; OTP

Parallel Ability

Yes

Use the CR mode loading under max. power rating.

0.1% + 0.2%F.S. 0.1% + 0.2%F.S. 0.1% + 0.2%F.S.

*1

Vmonitor Imonitor ±80A/±10V (Isolated)

rms

Protection

OVP: 360V

510V

DC

rms

);

(DC:

OVP: 360V

510V

rms

DC

rms

(DC:

);

OVP: 360V

510V

DC

rms

);

(DC:

General Information

1-5

Remote Interface

GPIB, RS-232C

AC Input

Operable Voltage

90-132/180-264V

rms

90-132/180-264V

rms

90-132/180-264V

rms

Fuse

2A, 250V

3A, 250V

Operable Frequency

47 ∼ 63Hz

Maximum VA

150VA

250VA

General

177×440×595 mm

7.0×17.3×23.4 inch

310×440×595 mm

12.2×17.3×23.4 inch

310×440×595 mm

12.2×17.3×23.4 inch

Weight

37kg / 81.57lbs

66kg / 145.5lbs

Dimension (H×W×D)

All specifications are subject to change without notice.

Note:

*1: Additional Spec: 0.1%×CF

2

×kHz

*2: The load value of CF is related to characteristic, frequency and output impedance of

UUT. When frequency is 440Hz, the load value of CF and the accuracy of the measurement value above 4.3 will over the specification.

*3: CF = 0.5% / I

+ 1%F.S.

rms

*4: S(Siemens) indicates conductance, that is the inverse of resistance.

1.5 Names of Parts

1.5.1 The Front Panel

The front panel of the load includes a 240 × 64 characters LCD display, 8 LED status indicators, and keypads. The LCD display will show which function is being performed when you use the keypads. Some of the keys have two functions. Figure 1-1 shows the front panel of the loads.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

1-6

Item

Symbol

Description

1

LCD display: The LCD is to display configuration, output setup, and measurement results.

2

Function key:

aside

nable to edit

key will be on.

PROGRAMMABLE AC/DC ELECTRONIC LOAD 63804 4.5KVA/45A/350V

MODEL

FUNCTION ENTRY

CC

CURSOR

/EDIT

RECALL

RLC

7 8 9

LOCK

4 5 6

CLEAR

1 2

+/-

3

ENTER

0

.

PROG

SHORTSAVE

CONF.

/LOCAL

LOAD

ON/OFF

CR

CV

CP

/DC RECT

1

2

3

5 4 6

Figure 1-2 The Front Panel of the Electronic Load

Table 1-1 The Description of the Front Panel

CC, CR, CP, CV, CURSOR / EDIT, RECALL, SAVE, CONF. / LOCAL, RLC / DC RECT, PROG., SHORT, LOAD ON / OFF

1. Users can choose the load modes by pressing the CC, CR, CP, CV, RLC / DC RECT keys and the LEDs

these keys will be on.

2. The function of CURSOR / EDIT key is to e

the digit by rotary knob under loading condition.

3. Pressing the RECALL key to recall the saved setting

from EEPROM that default of CC, CR, CV, CP and PROG files (1 to 10).

4. Pressing the SAVE key to save all of the present mode

settings in the specified files. The save program i s from 1 to 10. Saving DEFAULT is to save the status for the next time the Electronic Load is turned on. All saved settings are stored in EEPROM, and will not be lost when ac power is cycled.

5. The CONF. / LOCAL key is to select configuration data

for editing. When in remote control state, this key acts as a local key.

6. To select the RLC (DC RECT) mode for editing by

pressing RLC / DC RECT key and the LED aside this

General Information

1-7

7. PROG.: There is no function so fa r .

key will be active.

3

Entry key:

entered into the display previously.

4

Cursor key: These four keys are to move the cursor in different directions respectively.

5

Main Power Switch: It is to power on or off.

6

Rotary knob: The user can input programming data or

Note

PROG. is a reserved key. It is no function until now.

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.

9. The input can be held on or off by pressing LOAD ON /

OFF. W hen the input is turned on, the LED aside this

0 to 9 , and . , + / -, LOCK, CLEAR, ENTER

▲, ▼, ►, ◄

1. The user can program numeric data by pressing the

numeric keys and the decimal . key.

2. The + / - key can be used to toggle the sign for those

parameters for which it is relevant. This is typically the power factor setting.

3. It enables the lock function of rotary or keypad by

pressing the LOCK key.

4. To clear the digits entered from keypad. This CLEAR

key lets you correct wrong digits before they are entered.

5. It executes the entered value or the parameter for the

command accessed presently. The parameters you have entered with other keys are displayed but not entered into the Load until you press this key. Before pressing ENTER you can change or abort anything

select options by turning the rotary.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

1-8

Item

Name

Description

7

TTL I/O

For system input/output control signal

8

System bus

For master/slave control system data communication

9

GPIB connector

A remote controller using GPIB bus is connected to the AC load through this connector for remote operation.

10

RS-232C connector

The 9-pin, D-type female connector transfers control commands to and from the remote PC for remote operation.

11

Voltage monitor output

Analog output proportional to voltage waveform.

12

Current monitor output

Analog output proportional to current waveform.

13

Load terminal & Voltage

Load terminal is connected to source or UUT for loading. In

connecting cable.

14

AC input connector

Power line input is connected to the AC source through this connector.

15

AC input voltage switch

It is for switching AC input volta ge.

10

11

12

13

15

14 9 8

7

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.

Figure 1-3 The Rear Panel of the Electronic Load

Table 1-2 The Description of the Rear Panel

sense terminal

addition, voltage sense terminal senses directly at the terminals of the source to eliminate any voltage drop on the

Installation

2-1

Model

Name

Q’ty

63802 63804

User’s manual (CD-ROM)

1 pc

Load cable

1 pc

BNC cable

2 pcs

Line fuses do not need to be changed when the line voltage is changed.

2. Installation

2.1 Introduction

This chapter describes how to install the 63800 series Load as well as a turn-on check procedure and application considerations.

2.2 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. Do not return the instrument to Chroma without prior approval.

Please be sure that the following items are received.

63803

2.3 Installing

The Electronic Loads can operate well within the temperature range from 0 to 40ºC. However, you must install the Electric Load in an area that has enough space around the unit for adequate air flowing through and escaping from the back.

2.3.1 Preparation for Use

In the beginning, the instrument must be connected with an appropriate AC line input. Then, since fans intelligently cool it, it must be installed in sufficient space for circulation of air. It should be used in an area where the ambient temperature does not exceed 40°C.

2.3.2 Changing Line Voltage

The Electronic Load can operate with a 115/230 Vac input as indicated on the rear side of the unit. If the default factory voltage setting does not correspond to your nominal line voltage, set the switch to the correct line voltage as shown in Figure 2-1 be fore plu gging i n the power cord and turning on the power.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

2-2

to ground.

WARNING

Figure 2-1 Line Voltage Switch

2.3.3 Turn-On Self-Test

Check the following before turning on the Load.

1. 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.

2. The power cord is connected to the AC input socket.

The power supplies a chassis ground through a third connector. Be sure that your outlet is of three-conductor type with the correct pin connected

Turn on the Load by the power switch on the front panel and observe the display. Immediately after turning on, the Electronic Load executes a self-test and checks the GPIB interface board and identify the information of the system.

The LCD displays

A U T O

S E L F

T E S T I N G . . .

O K ! !

and then it goes to the output mode setting display.

Installation

2-3

I s e t = 4 5 . 0 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 3 5 . 0 U N I T :

A

A C C F O N L Y

connected to the Electronic Load.

WARNING

V = 1 0 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

If any error is found in self-test, the display will stop here. In case of failure, please contact Chroma sales or service office.



2.4 Application Connection

2.4.1 Load Connections

To sat isfy saf ety requ i rements, load cables must be large enough not to overheat while carrying the short-circuit output current of the device

Because the input source is rectified with the single-phase diode bridge circuit, the load terminals do not have to be identified the input polar direction. The major considerations in making input connections are the current wire size, length and the voltage sense cables.

The minimum current wire size required to avoid overheating may not be enough to maintain good regulation. The wires should be large enough to limit the voltage drop less than 0.5V per lead. The wires should be as short as possible, and bundled or tied together to minimize inductance and noise. The attached load cables are proposed for testing.

Local Operation

3-1

Model 63800

AC Load Simulation

DC Load Simulation

Constant Load Modes

Rectified Load Modes

CC Mode

CR Mode

CP Mode

RLC Mode

CP Mode

Inrush Mode

CC Mode

CR Mode

CP Mode

CV Mode

Rectified Mode

3. Local Operation

3.1 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. All of them can be saved in the load EEPROM for future use.

The load contains cooling fans. The fan speed increases or decreases au tomatically w hen the load power rises or falls. This feature reduces the overall noise lev el as the fans do no t alw ays run at the maximum speed.

Each load can operate in constant load modes and Rectified load modes. If the application requires a greater power or current capacity than one load can provide, you need to connect the loads in parallel.

The AC load can be configured to operate in local or remote mode. The operation in remote mode through a remote GPIB controller or RS-232C will be described in Chapter 5. In this section the operation in local mode through the keypad on the front panel and testing will be described. The AC load is configured for local operation when it is turned on.

There are two kinds of load simulation for the 63800: AC Load Simulation and DC Load Simulation. The operation is shown as below.

Figure 3-1 Operation Structure

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-2

3.2 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. Remote control goes into effect as soon as the Load receives a command via GPIB, RS-232C. When the remote control is in effect, only the computer can control the Load. The f r ont panel keypad has no effect except the CONF./LOCAL key. You can return to local control by pressing CONF./LOCAL key.

Most of the functions that perform remotely can be done locally too at the Load f ront panel. Details of local operation are given in Section 3.4 Local Operation. Fundamentals of remote programming are described in the latter part of this manual.

3.3 Modes of Operation

In AC load simulation you can select the mode by pressing CC, CR, CP or RLC/DC RECT keys under the FUNCTION keypad. In DC load simulation, you can select the mode by pressing CC, CR, CP, CV or RLC/DC RECT keys under the FUNCTION keypad. The parameters in current, resistance, power or rectified load mode can be programmed easily when the mode is selected.

All data set in any mode will be rescaled to fit the resolution of current/voltage levels, power value, crest factor (CF ) or power factor (PF). In local mode any value can be set to the Load from the keypad. There is no upper and lower limit that would cause an error. The Load automatically selects data, which is rescaled from the programmed value, truncates and checks high, low boundary before fitting it into the memory. When the programmed data is over the boundary, the Load will be still at original value. In remote mode the programmed value cannot be over boundary. An error will occur when data is over the maximum or minimum value. The boundary of voltage and current of the load, as well as the power, are shown in Figure 3-2.

The operating ambient temperature for the full load is from 0°C t o 40°C, or the OTP will occur for a period of time.

Figure 3-2 Operating Boundary of Power, Voltage and Current

Local Operation

3-3

When you edit setting, the display will blink to let you know which setting is to be edited or has been selected.

When setting the load level, the resolution of current, voltage, power,

resistance will be degraded to low values when entered.

CC

CR

CP

CV

CURSOR

/

EDIT

RECALL

SAVE

CONF/

LOCAL

RLC

/

DC RECT

PROG

SHORT

LOAD

ON/OFF

7 4 1 0

8 5 2

·

9 6 3

+/-

LOCK

CLEAR

ENTER

3.4 Local Operatio n

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. The display can be used to view the massage, including programmed setting, measurement data, and system indication.

In the remote state, the keys on the front panel have no ef fect. Only remote controller can program the Load. The Load LCD display will show REMOTE message.

resistance and slew rate will be different from the entered values. The displayed value will remain as the one entered. But the output will be the actual value D/A programmed in the load. These parameters except

Figure 3-3 63800 Function & Entry Key Overview

3.4.1 Setting the Configuration

The Electronic Load provides useful features. To use these powerful features, you must set relevant parameters in accordance with application needs by the configuration setup. This procedure is only needed for initial setup of a test operation. The configuration of the Load is stored in EEPROM. To set configuration you must press the CONF./LOCAL key. The display will show as follows:

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-4 [ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K T M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

1. SETUP There are seven items to setup. All these seven items are shown in the following pages

of LCD display.

In item 1, if the AC is chosen, the load will operate in AC mode as well as DC mode. In item 2, if the hold is chosen, “short” function will stop when the user releases the

“SHORT” key. In item 3, if the keypad is chosen, the keypad will be locked when the user presses the

“LOCK” key. The keypad will recover when the “LOCK” key is pressed again. So do the other two choices.

In item 4, if the user chooses the “OFF”, the buzzer will become invalid. In item 5, the user can choose the Sub mode (CF only, PF only, Both). In the Both mode

user can chooses the priority of CF or PF and the other one wil l changed the boundary according to section 3.4.6.

In item 6, if the user chooses the “ON”, the timing mode will be enabled. After the LOAD ON, timer stops either the voltage is under cutoff voltage or the timer is over.

In item 7, if the user chooses the EXTERNAL signal “ON”, then the user can program the load ON by the signal, however, the LOAD ON/OFF key will become invalid.

In item 8, the user needs to set the I

(max) value once if the ABA Mode is “ENABLE”.

p

Local Operation

3-5

[ R E M O T E ] G P I B A D D R E S S = 8 R S 2 3 2 P A R A M E T E R S : B A U D R A T E = 5 7 6 0 0 D A T A B I T = 8 S T O P B I T = 1

P A S S W O R D : _ _ _ _ _

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:

3. CALIBRATION There are five items to be calibrated the values of settings and measurements. He who

wants to enter into the calibration has to input the password for protecting the calibrated values are changed arbitrarily. The unit had been calibrated before exiting factory, so that users do not need to calibrate during operation. Calibration function is only for Chroma’s calibration department, users do not process it.

4. DISPLAY SELECTION

In this display selection, the user has the choice to select four reading values of measurement shown in the main page, second and third pages are di splayed by pressing the direction key ( ◄, ► ) or rotating the rotary knob.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-6 [ 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 P A G E = V / I / P / S S E C O N D P A G E = Q / P F / C F / F T H I R D P A G E = + I / - I / T H D / R

[ F A C T O R Y D E F A U L T ] R E C A L L D E F A U L T

= N O

5. FACTORY DEFAULT In this item, users can recall the default settings for all parameters.

6. MODEL INFORMATION In this item, the user can view some information of F/W version, S/N, model, and

specification.

[ M O D E L I N F O R M A T I O N ]

H O S T F / W = 1 . 4 1

D S P F / W = 1 . 4 1

M O D E L = 6 3 8 0 4

3.4.2 External ON/OFF

63800 can control Load ON/OFF status through TTL signal. LOAD ON/OFF key is invalid when External ON, Load ON/OFF status can only be controlled through TTL signal.

Local Operation

3-7

Conversely, when External OFF users can control Load ON or OFF through LOAD ON/OFF key.

3.4.3 Goi ng 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.

3.4.4 Online Change Loading

The Load provides two ways for changing level online. They are convenient for you to change load directly with the rotary knob when LOAD ON. These two operation modes are described below. By Rotary knob: In LOAD ON, change load with the rotary knob in resolution unit.

When the rotary knob rotates clockwise, it means as follows.

CC mode: raise the current value. CR mode: raise the resistance value. CP mode: raise the power value. When the rotary knob rotates counterclockwise, it means as follows. CC mode: lower the current value. CR mode: lower the resistance value. CP mode: lower the power value.

By CURSOR EDIT: In LOAD ON, press the mode key CC, CR, or CP to make the display

show numeric values for the setting. Press CURSOR EDIT to see the cursor blinking on the display. Press ◄, ► keys to move the cursor to the digit you want to edit. Change the value by rotary knob. Press the

CURSOR EDIT key again to disable the cursor.

3.4.5 Load ON/OFF

Load ON:

After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. When the status of the load is “LOAD ON”, the LED beside the LOAD ON/OFF button will be lightened. Users are able to change the setting values of various parameters arbitrarily during loading. Certainly, the setting values of various parameters need to be within spec. or reasonable range.

Load OFF:

The LOAD ON/OFF key should be pressed again to turn off the load. When the status of the load is “LOAD OFF”, the LED beside the LOAD ON/OFF button will be off. Turning off the load does not affect the programmed setting. The load will return to the previous programmed

values when the Load is turned on again.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-8

3.4.6 The Relationship of Crest Factor and Power Factor

Crest Factor is the peak current divided by RMS current. When a c rest factor is se t as 1.414, it means that the DSP creates a sinusoidal current waveform.

Power factor is defined as the true power divided by the apparent power. If the PF is not the same as the setting value, the position of the current waveform will be modified to meet the PF value by the DSP. For a resistive load, the power factor is one. If values o f V constant, the power factor decrease by the increasing of the crest factor because the effective multiplication of voltage and current is down.

The following relationship of PF and CF is valid for the sinusoidal waveform of the input voltage, because the estimated algorithm is established on that the input voltage waveform and the sunk current waveform are sinusoidal or modified sinusoidal waveforms. The maximum power factor of a determinate crest factor occurs at the maximum overlap of input voltage waveform and sunk current waveform. That is, the peaks value of the voltage and current are at the same time. The minimum power factor occurs at the minimum overlap of input voltage waveform and sunk current waveform. That is, the zero-crossings of the voltage waveform and current waveform are the same.

These two situations are illustrated in Figure 3-4 and Figure 3-5.

Figure 3-4 Maximum PF through Figure 3-5 Minimum PF through

a Determinate CF a Determinate CF

According to the algorithm, Figure 3-6 shows the relationship of PF and CF. However , for the minimum operating voltage of the electronic load, the minimum PF through a determinate crest factor will be varied. We have to adjust to appropriate value. The modified value is illustrated on Table 3-1.

rms

and I

rms

are

Local Operation

3-9

CF

PFmax

PFmin (50V

rms

)

PFmin (100V

rms

)

PFmin (200V

rms

)

1.5

0.993

0.992

0.982

0.977

2.0

0.849

0.668

0.634

0.617

2.5

0.703

0.408

0.373

0.356

3.0

0.593

0.266

0.234

0.219

3.5

0.511

0.186

0.158

0.144

4.0

0.449

0.138

0.113

0.100

4.5

0.399

0.107

0.084

0.073

5.0

0.360

0.085

0.065

0.055

Figure 3-6 The Relationship of PF and CF

Table 3-1 Maximum and Minimum Values of PF in Different CF

If users choose BOTH mode(please refer section 3.6.1) in CC mode(please refer section 3.6) and CP mode(please refer section 3.8) under AC load simulation(please refer section 3.5), thus it is needed to input CF and PF values simultaneously.

It is necessary to set CF and PF priority again in BOTH mode. If users’ settings are outside of the range as in Figure 3-6 and Table 3-1, 63800 Electronic Load will modify users’ settings to a reasonable range automatically.

Example 1: (when the priority is CF and the output voltage of UUT is 200V

a. If users set CF =1.5 and PF=1, however the allowable PF value with CF=1.5 is from 0.977

to 0.993. The system will use a loading with a PF value close to the allowable PF value, in this case a PF value of 0.993 will be used.

b. If users set CF=1.5 and PF=0.8, however the allowable PF value reasonable range under

CF=1.5 is from 0.977 to 0.993. The system will use a loading with a PF value close to the allowable PF value, in this case a PF value of 0.977 will be used.

c. If user s set CF=3 and PF=0.1, 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 0.219 will be used.

rms

)

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-10

U U T P O W E R L O S S ! ! ! W a s U U T t y p e c h a n g e d ? < E N T E R > : Y E S < L O A D O N / O F F > : N O

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.

Example 2: (when the priority is PF and the output voltage of UUT is 200V

a. If users set PF=0.8 and CF=3, however the allowable CF value reasonable range under

PF=0.8 is from 1.750 to 2.153. The system will use a loading with a CF value close to the allowable CF value, in this case a CF value of 2.153 will be used.

b. If users set PF=0.8 and CF=1.5, however the allowable CF value reasonable range under

PF=0.8 is from 1.750 to 2.153. The system will use a loading with a CF value close to the allowable CF value, in this case a CF value of 1.750 will be used.

c. If user s set PF=0.5 and CF=5, however the allowable CF value reasonable range under

PF=0.5 is from 2.157 to 3.552. The system will use a loading with a CF value close to the allowable CF value, in this case a CF value of 3.552 will be used.

d. If users set PF=0.5 and CF=1.5, however the allowable CF value reasonable range under

PF=0.5 is from 2.157 to 3.552. The system will use a loading with a CF value close to the allowable CF value, in this case a CF value of 2.157 will be used.

rms

)

3.4.7 Ip(max) Setting and Automatic Bandw idth

Adjustment (ABA) Mode

Ip(max) has to be set for all modes and it has two functions: the 63800 Electronic Load uses the value I maximum current limit for normal loading. Every time the voltage is gone and appears again (for instance power recovery after changing the UUT), the I Electronic Load will pop up a window shown as below when the voltage is gone if I not been set. The below window requests users to enter the I value. When users want to change the value Ip(max), please press ENTER key to enter the

edit page, then to key in v alue you w ant and then press ENTER key. If the value is the same as the last time, please press LOAD ON/OFF key to sink a loading current directly.

If YES, please press ENTER key, then you need to re-enter the Ip(max). After entering the Ip(max), the loading will be ON automatically without pressing the LOAD ON/OFF key.

(max) set as the reference for testing UUT’s impedance, in addition it is the

p

(max) has to be reset. 63800

p

(max) has

p

(max) value with the previous

p

Local Operation

3-11

P l e a s e r e - e n t e r I p ( m a x ) . I p ( m a x ) = 0 . 0

If the voltage is gone and voltage appears again in two seconds, the 63800 Electronic Load will not request users to input again.

The 63800 Electronic Load uses the value Ip(max) set as the reference for

maximum load current of the UUT.

The ABA Disable Mode is an advanced mode for users that are familiar with

Disable under parallel mode.

WARNING

If NO, please press LOAD ON/OFF key, the AC load will using the previous Ip(max) value to load ON automatically without pressing the LOAD ON/OFF key.

If the users press the LOAD ON/OFF under Ip(max)=0, the system wil l beep twice to w arn the users that their Ip(max) value is 0, then the system will LOAD ON with zero loading current.

testing UUT’s impedance. Hence, when the value Ip(max) s etting i s too high, the UUT may be damaged by the loading current. Otherwise, when the value I

(max) setting too low, the test tolerance of UUT’s impedance

p

becomes larger and results in the increase of measuring tolerance. Therefore, it is recommended to set I

(max) value according to the

p

When the ABA Mode is Disable, the I

(max) only need to be set once. It is very dangerous

p

for beginner to use this mode.

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. Moreover, after ABA is set to Disable under AC mode, AC load Load ON firstly and then UUT power on. It is only for AC load under CR mode, there is no this function under DC mode. It doesn’t support ABA

3.4.8 Lock Mode

63800 Electronic Load provides lock function, it avoids user to touch keypad or rotary unintentionally when operating constantly. Otherwise, the unintentional behavior may cause UUT damage or experiment failure.

Lock function consists of lock keypad, lock rotary and lock all. The following introduces how to operate lock function.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-12 [ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

I s e t = 0 . 5 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

A C P R I O R I T Y : C F L O C K

3. Move the direction ( ▲, ▼ ) to “1-3 LOCK MODE”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “ROTARY”, “KEYPAD”

or “ALL”, then press ENTER.

5. Press CC, CR, CP or RLC/DC RECT to back to the mode that user want to use.

6. Press LOCK to lock the item you select in step 4.

Example: (Use lock mode under CC mode)

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

7. Press LOCK again to release the item that user selected in step 4 then the window is

shown as below.



Local Operation

3-13

I s e t = 0 . 5 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

A C P R I O R I T Y : C F

If user chooses Lock ALL thus all keypads and rotary are disabled exc ept for LOCK key.

The UUT’s output meets AC mode and frequency is within 45Hz ~ than 2mH thus it can normal use.

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0



3.5 AC Load Simulation

The 63800 series electronic load has AC/DC simulated functions. The AC load simulation includes constant load mode and rectified load mode and its operation modes are described as below.

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; CR and RLC mode only set determinate values. It is necessary to set UUT’s output maximum current value I modes. The value I optimum.

(max) is for 63800 to test UUT’s output impedance for getting system

p

(max) in all

p

440Hz, output voltage 45Vrms ~ 350Vrms and output inductance is less

63800’s power-on default value is AC mode. If user wants to return to AC mode from DC mode.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-14 [ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

3. Move the direction ( ▲, ▼ ) to “1-1 MODE SELECT”.

4. Press the direction key ( ◄, ► ) to choose “AC”, then press ENTER.

5. Then press CC, CR, CP or RLC/DC RECT to enter the CC, CR, CP or Rectified mode.

There are two kinds of AC mode: Constant Load modes and Rectified Load Modes as shown in Figure 3-1. Constant Load Modes are divided into three sub-modes of CC, CR and CP modes. Rectified Load Modes are divided into three sub-modes of RLC, CP (base on RLC mode) and Inrush Current modes. The detailed setting descriptions are as follows.

Local Operation

3-15

If the voltage is drawn to 0V under CP mode, it will trigger the warning of Load Fail (LDF). Meanwhile, the loading for the load will be stopped.

When LDF warning is triggered then press power switch to restart AC Chroma sales or service office.

The output voltage of UUT will distort because of loading current. If the the loading, the AC load will stop the loading.

WARNING

3.6 AC Load Simulation -- Constant Current Mode

In CC mode, the Load will sink a current according to the programmed value if the input voltage is higher than the minimum operating voltage. The CC mode can be set by pressing CC key in the front panel.

The waveform of the current is programmed as a sinusoidal wave synchronized by the zero-crossing waveform of the input voltage. The PF can be set between ±1. The positive PF value means that the voltage lags the current, and the negative PF value means that the voltage leads the current. That is, the peak voltage occurs before the peak current for a negative PF. On the other hand, the peak voltage occurs after the peak current under the positive PF. To set the condition of the CC mode, press the arrow key to select the setting parameters on the LCD display, including current RMS value, PF, CF, I restricted that the input voltage is sine waveform or quasi-sine waveform. A limitation exists between PF and CF. If the w av eform o f the i nput v ol tage is a square wave, a special setting is prepared in RLC/DC RECT. See Section 3.9.

CF & PF parameters have CF ONLY, PF ONLY and BOTH, these three types in CC mode. If CF only is set, the PF should remain at the CF maximum and cannot be changed. If PF only is set, the CF should remain at the PF minimum and cannot be changed. If BOTH is set, it is necessary to set priority. When CF is set as the priority, the range of PF that can be set is limited to the PF range allowed for the CF value set (according to the Figure 3-6). On the contrary, if PF is set as the priority, the range of CF is limited to the CF range allowed for the PF value set (according to Figure 3-6.)

I current setting Load Current

V Input Voltage

Figure 3-7 Constant Current Mode

(max). The setting values are

p

load. If AC load can not function normally after restarting, please contact

output voltage of the UUT becomes distortion and drops below 10V due to

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-16

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

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.

3. Move the direction key ( ▲, ▼ ) to “1-5. CF/PF SETTING”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “BOTH”, then press

ENTER.

5. After pressing ENTER, a window will pop up to request the user to key in CF and PF

priority.

6. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose the priority you want

then press ENTER. If ENTER is not pressed, a window will not be popped up thus the priority is the setting value of last time.

Local Operation

3-17

C F P F P R I O R I T Y = C F / P F

I s e t = 0 . 5 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

A C P R I O R I T Y : C F

I s e t = 0 . 5 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

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

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 current, CF, PF and I interdependent relationship. W hen PRIORITY : CF, PF has the limitation of maximum and minimum. Contrarily, when PRIORITY : PF, CF also has t he limit ation of maximum and minimum. (More detailed information please refers section 3.4.6.)

(max) with the Entry keys. The values of CF and PF have

p

(max). Users can type the values of

p

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting I as below:

1. Move the cursor by pressing ( ◄, ► ) to the command line of “I

2. Press 5 then press ENTER to change the value to “5.000”.

= 5.000, CF = 1.5, PF = 0.800 and Ip(max) = 20.0, are described

set

=”.

set



3. Move the cursor by pressing ( ◄, ► ) to the command line of “CF=”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-18

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

I s e t = 5 . 0 0 0 C F = 1 . 5 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 0 0 0 C F = 1 . 5 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 2 0 . 0 U N I T :

A

If there is an error during the procedure of inputting value, press CLEAR to clear at any time and then input again.

4. Press 1 , . , 5 then press ENTER t o c hange the value to “1.500”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

6. Press 0 , . , 8 then press ENTER t o c hange the value to “0.800”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

8. Press 2 , 0 then press ENTER to c hange the value to “20.0”.

9. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For More detailed information please refers section

3.4.5.)

3.6.2 CF Only

For switching CF only mode, the procedures are as below:

1. Press CONF./LOCAL key.

Local Operation

3-19

I s e t = 0 . 5 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 0 . 0 U N I T :

A



A C C F O N L Y

I s e t = 0 . 5 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 1 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 1 0 0 C F = 1 . 4 1 4 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 1 0 0 C F = 1 . 5 1 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

2. Press 1 , then press ENTER t o 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. (The display please refer 3.6.1 BOTH mode.)

5. Then press CC to back to main page.

Users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, CF, and I

(max).

p

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting I

1. Move the cursor to the command line of “I

2. Press 5 , . , 1 then press ENTER t o c hange the value to “5.100”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “CF=”.

= 5.100, CF = 1.51 and Ip(max) = 20.2, are described as below:

set

=”.

set

4. Press 1 , . , 5 , 1 then press ENTER to change the value to “1.510”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-20

I s e t = 5 . 1 0 0 C F = 1 . 5 1 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 1 0 0 C F = 1 . 5 1 0 I p ( m a x ) = 2 0 . 1 U N I T :

A

If there is error during the procedure of inputting val ue, press CLEAR to clear at any time and then input again.

I s e t = 0 . 5 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 .

0

U N I T :

A

A C P F O N L Y

5. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

6. Press 2 , 0 , . , 1 then press ENTER t o chang e the value to “20.1”.

7. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For more detailed information please refer section

3.4.5)

3.6.3 PF Only

For switching PF only mode, the procedures are as below:

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o 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 “PF”. (The display

please refers 3.6.1 BOTH mode.)

5. Then press CC to enter the PF only mode.

Users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, PF, and I with the Entry keys.

(max). Users can type the values of current, PF and Ip(max)

p

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0



Local Operation

3-21

I s e t = 0 . 5 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 2 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 2 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 1 0 . 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 2 0 0 P F = 0 . 8 8 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 2 0 0 P F = 0 . 8 8 0 I p ( m a x ) = 1 0 . 0 U N I T :

A

I s e t = 5 . 2 0 0 P F = 0 . 8 8 0 I p ( m a x ) = 2 0 . 3 U N I T :

A

If there is error during the procedure of inputting val ue, press CLEAR to clear at any time and then input again.

The procedures of setting I

= 5.200, PF = 0.88 and Ip(max) = 20.3, are described as below:

set

1. Move the cursor to the command line of “I

set

=”.

2. Press 5 , . , 2 then press ENTER t o c hange the value to “5.200”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

4. Press 0 , . , 8 , 8 then press ENTER to change the value to “0.880”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

6. Press 2 , 0 , . , 3 then press ENTER t o chang e the value to “20.3”.

7. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For More detailed information please refers section

3.4.5.)

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-22

3.7 AC Load Simulation -- Const ant Resistance

Mode

In CR mode, the Load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. The waveform of the current is the same as the waveform of the input voltage, so the power factor allowed is 1.

The Electronic Load modules implement constant resistance mode by using CC circuits to regulate the input. The input voltage of the load is regarded as reference for current control. The formula I/V = 1/R.

V : input voltage. I : controlled parameter to determine the resistance. 1/R : conductance, reciprocal of resistance.

The specifications of CR mode accuracy are specified as conductance. The effect on the programmed resistance value is not linear over the resistance range, because resistance is the reciprocal of conductance. The electronic load is designed for high current applications of CR mode. Therefore, when large resistance is required, accuracy can be improved by reading the voltage and current from the load, calculating the actual resistance, and adjusting the set value.

To calculate the accuracy of programmed value error, the programmed value must be reciprocated first. The error is then applied to the programmed value (conductance), and the result is once again reciprocated. The following example illustrates the worst-case error of CR mode.

Example: 1 to 1000 ohm range of model 63804 The accuracy for this range is specified as 0.5% + 0.5%FS.

If 5 ohm is programmed, the actual resistance will be conductance : 0.2+(0.2×0.5%+1×0.5%) to 0.2 − (0.2×0.5%+1×0.5%)

resistance : 4.854Ω to 5.154 Ω If 100 ohm is programmed, the actual resistance will be

V

Input Voltage Slope (R setting) I Load Current

Figure 3-8 Constant Resistance Mode

Local Operation

3-23

R s e t = 5 . 0 0 I r m s ( m a x ) = 5 0 . 0

U N I T : Ω ,

A



A C

R s e t = 5 . 0 0 I r m s ( m a x ) = 5 0 . 0 U N I T : Ω ,

A

R s e t = 1 0 . 5 0 I r m s ( m a x ) = 5 0 . 0 U N I T : Ω ,

A

R s e t = 1 0 . 5 0 I r m s ( m a x ) = 5 0 . 0 U N I T : Ω ,

A

R s e t = 1 0 . 5 0 I r m s ( m a x ) = 2 0 . 0 U N I T : Ω ,

A

If there is error during the procedure of inputting val ue, press CLEAR to clear at any time and then input again.

conductance : 0.01+(0.01×0.5%+1×0.5%) to 0.01 − (0.01×0.5%+1×0.5%)

resistance : 66.445 Ω to 202.02 Ω

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).

rms

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting R

1. Move the cursor to the command line of “R

= 10.50 and I

set

(max) = 20.0, are described as below:

rms

=”.

set

2. Press 1 , 0 , . , 5 then press ENTER t o chang e the value to “10.50”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “I

4. Press 2 , 0 then press ENTER to c hange the value to “20.0”.

5. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For the detailed information please refers section

3.4.5.)

(max)=”.

rms

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-24

If the voltage is drawn to 0V under CP mode, it will trigger the warning of Load Fail (LDF). Meanwhile, the loading for the load will be stopped.

Chroma sales or service office.

The output voltage of UUT will distort because of loading current. If the the loading, the AC load will stop the loading.

WARNING

3.8 AC Load Simulation -- 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. That is, take the measured V data, divide the Power setting and get the I setting value.

The waveform of the current is programmed as a sinusoidal wave synchronized by the zero-crossing waveform of input voltage. The values of the PF and CF can be programmed in CP mode as well as in CC mode.

In this mode, there are CF only, PF only and B OTH for selection. The following is only focused on the BOTH mode to describe, others about the setting methods of CF only and PF only please refers section 3.6.2 and 3.6.3. CP mode can be set by pressing CP key. Users can press the arrow key to select the setting parameters on the LCD display, including current Power value, CF, PF, and I

I Load Power setting Current P = V * I

V Input Voltage

Figure 3-9 Constant Power Mode

(max).

p

When LDF warning is triggered then press power switch to restart AC load. If AC load can not function normally after restarting, please contact

output voltage of the UUT becomes distortion and drops below 10V due to

3.8.1 BOTH

The default value in CP mode is the BOTH mode. To switch from other modes to BOTH mode, its setting methods are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

Local Operation

3-25

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

C F P F P R I O R I T Y = C F / P F

3. Move the direction key ( ▲, ▼ ) to “1-5. CF/PF SETTING”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “BOTH”, then press

ENTER.

5. After pressing ENTER, meanwhile a window will be popped up to request users to key in

the priorities of CF and PF.

6. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose the priority you want

then press ENTER. If ENTER is not pressed, a window will not be popped up thus the priority is the setting value la s t time.

7. Press CP 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). Users can type the values of

p

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-26

P s e t = 4 5 0 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A



A C P R I O R I T Y : C F

P s e t = 4 5 0 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

P s e t = 2 2 0 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

P s e t = 2 2 0 0 . 0 C F = 1 . 4 1 4 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

P s e t = 2 2 0 0 . 0 C F = 2 . 0 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

P s e t = 2 2 0 0 . 0 C F = 2 . 0 0 0 P F = 1 . 0 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

power, CF, PF and Ip(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. Contrarily, when PRIORITY : PF, CF also has the limitations of maximum and minimum. (More detailed information please refer section 3.4.6.)

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting P described as below:

1. Move the cursor to the command line of “P

= 2200.0, CF = 2.00 0, PF = 0.780, and Ip(max) = 25.0, are

set

=”.

set

2. Press 2 , 2 , 0 , 0 then press ENTER to change the value to “2200.0”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “CF=”.

4. Press 2 then press ENTER to change the value to “2.000”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

Local Operation

3-27

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 . 0 U N I T : W ,

A

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 . 0 U N I T : W ,

A

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 ) = 2 5 . 0 U N I T : W ,

A

If there is error during the procedure of inputting val ue, press CLEAR to clear the value at any time and then input again.

6. Press 0 , . , 7 , 8 then press ENTER to change the value to “0.780”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

8. Press 2 , 5 then press ENTER to c hange the value to “25.0”.

9. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the cur rent. (For the detailed i nformation please re fer

section

3.4.5.)

3.8.2 CF Only

For switching to CF only mode, the procedures are as below:

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP. (The display please refer 3.8.1 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. (The display please refer 3.8.1 BOTH mode)

5. Then press CP to back to main page.

Users can press the arrow key to select the setting parameters on the LCD display, including power value, CF, and I

(max).

p

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-28

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



A C C F O N L Y

P s e t = 4 5 0 0 . 0 P F = 1 . 4 1 4 I p ( m a x ) = 4 0 . 0 U N I T : W ,

A



A C P F O N L Y

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

3.8.3 PF Only

For switching PF only mode, the procedures are as below:

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER to enter SETUP. (The display please refer 3.8.1 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 “PF”. (The display

please refer 3.8.1 BOTH mode.)

5. Then press CP to enter the PF only mode.

Users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, PF, and I the Entry keys.

(max). Users can type the values of current, PF and Ip(max) with

p

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

Local Operation

3-29

The operating frequency should be lower than 70Hz under Rectified Load Mode.

Zo

Vo

Io

Rs Ls

C

R

L

Vs

Source

[ R E C T I F I E D L O A D

]

Rs Ls

R

L

C

C H O O S E = 1 1 . R L C M O D E 2 . C P M O D E 3 . I N R U S H C U R R E N T

3.9 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 – RLC mode, CP mode and Inrush Current mode.

Figure 3-10 Schema of rectified load

3.9.1 RLC Mode

For switching RLC mode, the procedures are as below:

1. Press RLC/DC RECT key to go into the Rectified Load Mode.

2. Press 1 , then press ENTER t o enter RLC mode.

Users are able to set the equivalent series resistance R equivalent parallel load capacitance C, equivalent parallel load resistance R parameters for loading when operating in this mode. The UUT Ip(max) value needs to be set before loading and the parameter range for setting is listed in the specifications.

, equivalent series inductance Ls,

s

L

and I

(max)

rms

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-30

R s = 0 . 1 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

A C

R s = 0 . 1 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting R described as below:

1. Move the cursor to the command line of “R

2. Press 0 , . , 2 then press ENTER t o c hange the value to “0.20”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “Ls=”.

= 0.2, Ls = 100, C = 2300, RL = 4500, and Ip(max) = 30.0, are

s

=”.

s



4. Press 1 , 0 , 0 then press ENTER to change the value to “100”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “C=”.

6. Press 2 , 3 , 0 , 0 then press ENTER to change the value to “2300”.

Local Operation

3-31

R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 4 5 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 4 5 0 0 . 0 0 I p ( m a x ) = 1 0 . 0 U N I T : Ω , u H , u F ,

A

R s = 0 . 2 0 L s = 1 0 0 C = 2 3 0 0 R L = 4 5 0 0 . 0 0 I p ( m a x ) = 3 0 . 0 U N I T : Ω , u H , u F ,

A

If there is error during the procedure of inputting val ue, press CLEAR to clear the value at any time and then input again.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “RL=”.

8. Press 4 , 5 , 0 , 0 then press ENTER to change the value to “4500”.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

10. Press 3 , 0 then press ENTER to change the value to “30.0”.

11. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For more detailed information please refer section

3.4.5.)

3.9.2 CP Mode

The appropriate parameter values of Rs, Ls, C, RL can be calculated by the algorithm of P and PF settings. The value will be used to execute loading and the loading power will be compensated automatically to be within the error range. The UUT I

(max) needs to be set

p

before loading. For switching to CP mode, the procedures are as below:

1. Press RLC/DC RECT k ey to go into the Rectified Load Mode.

2. Press 2 , then press ENTER t o enter CP mode.

set

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-32

[ R E C T I F I E D L O A D

]

Rs Ls

R

L

C

C H O O S E = 2 1 . R L C M O D E 2 . C P M O D E 3 . I N R U S H C U R R E N T

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

A C C P

The input ranges of P

and PF are 200W to 3375W and 0.4 to 0.75 in CP

mode.

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

= 0

R s = 0 . 0 0 0 L s = 0

C = 0 R L = 0 . 0 0

A C C P

Users can press the arrow key to select the setting parameters on the LCD display, including real power P

, PF and Ip(max).

set

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0 

63800 calculates a group of Rs, Ls, C and RL for loading by P impedance which set by users. Users can press ▲ and ▼ to view the values of Rs, Ls, C and RL as below.

I p

+

. 0 0

set

, PF values and UUT’s

set

T H D = 0 . 0 0

▲

I p

The procedures of setting P

1. Move the cursor to the command line of “P

-

. 0 0

set

= 500, PF = 0.700, and Ip(max) = 30.0, are described as below:

=”.

set

3-33

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

P s e t = 5 0 0 . 0 P F = 0 . 6 0 0 I p ( m a x ) = 2 0 . 0 U N I T : W ,

A

P s e t = 5 0 0 . 0 P F = 0 . 6 0 0 I p ( m a x ) = 2 0 . 0 U N I T : W ,

A

P s e t = 5 0 0 . 0 P F = 0 . 7 0 0 I p ( m a x ) = 2 0 . 0 U N I T : W ,

A

P s e t = 5 0 0 . 0 P F = 0 . 7 0 0 I p ( m a x ) = 2 0 . 0 U N I T : W ,

A

P s e t = 5 0 0 . 0 P F = 0 . 7 0 0 I p ( m a x ) = 3 0 . 0 U N I T : W ,

A

If there is error during the procedure of inputting val ue, press CLEAR to clear the value at any time and then input again.

2. Press 5 , 0 , 0 then press ENTER to change the value to “500.0”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

4. Press 0 , . , 7 then press ENTER t o c hange the value to “0.700”.

Local Operation

5. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

6. Press 3 , 0 then press ENTER to c hange the value to “30.0”.

7. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the cur rent. (For the detailed i nformation please refer

section

3.4.5.)

When the values of P

and Ip(max) are in unreasonable range then 63800 AC/DC Electronic

set

Load will pop up a “Setting Error” warning window is shown as below figure. The window informs that users’ settings are unreasonable range, users can press ENTER to exit this warning window to reset the values of P

and Ip(max).

set

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-34 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 v a l u e s : P s e t a n d I p ( m a x ) .

higher to the reasonable range value.

[ R E C T I F I E D L O A D ]

Rs Ls

R

L

C

C H O O S E = 2 1 . R L C M O D E 2 . C P M O D E 3 . I N R U S H C U R R E N T

WARNING

If the setting value of of P AC load will not load the UUT. For example, when voltage is 50V users set P

=1000W, Ip(max) = 10A

set

loading current should be 20A the AC load will not load the UUT, please adjust P

and Ip(max) are unreasonable range then the

set

rms

. If P

rms

. Thus, for the setti ng of Ip(max)=10A

rms

=1000W, the reasonable

set

lower or Ip(max)

set

3.9.3 Inrush Current Mode

and

rms

The RLC load network (Figure 3-10) can test the inrush current output of UUT. First, input the load network parameter (R can simulate the input angle during maximum inrush current output. I

, Ls, C, RL) and use DSP to control the initial loading position. It

s

(max) is the parameter

p

needed to be set as well for the subsequent loading. (For the detailed information please refer section 3.4.7.)

For switching to Inrush Current mode, the procedures are as below:

1. Press RLC/DC RECT key to go into the Rectified Load Mode.

2. Press 3 , then press ENTER t o enter Inrush Current mode.

Users can press the arrow key to select the setting parameters on the LCD display, including equivalent series resistance R capacitance C, equivalent parallel load resistance R type the values with the Entry keys.

, equivalent series inductance Ls, equivalent parallel load

s

, phase in angle and Ip(max). Users can

L

Local Operation

3-35

R s = 0 . 1 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

A C I N R U S H

R s = 0 . 0 1 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 2 0 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 0 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 S = 0 . 0 0

The procedures of setting R

I

(max) = 40.0, are described as below:

p

1. Move the cursor to the command line of “R

2. Press 0 , . , 0 , 2 then press ENTER to change the value to “0.02”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “Ls=”.

= 0.02, Ls = 110, C = 2400, RL = 3600, PHASE = 180 and

s

=”.

s



4. Press 1 , 1 , 0 then press ENTER to change the value to “110”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “C=”.

6. Press 2 , 3 , 0 , 0 then press ENTER to change the value to “2300”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-36

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 5 0 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 3 6 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 3 6 0 0 . 0 0 P H A S E = 9 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 3 6 0 0 . 0 0 P H A S E = 1 8 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 3 6 0 0 . 0 0 P H A S E = 1 8 0 I p ( m a x ) = 1 0 U N I T : Ω , u H , u F , ⋅ ,

A

R s = 0 . 0 2 L s = 1 1 0 C = 2 3 0 0 R L = 3 6 0 0 . 0 0 P H A S E = 1 8 0 I p ( m a x ) = 3 0 U N I T : Ω , u H , u F , ⋅ ,

A

If there is error during the procedure of inputting val ue, press CLEAR to clear the value at any time and then input again.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “RL=”.

8. Press 3 , 6 , 0 , 0 then press ENTER to change the value to “3600”.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “PHASE=”.

10. Press 1 , 8 , 0 then press ENTER to change the value to “180”.

11. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

12. Press 3 , 0 then press ENTER to change the value to “30.0”.

13. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the cur rent. (For the detailed i nformation please re fer

section

3.4.5.)

3-37

The below is the waveform figure of measured inrush current.

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

Local Operation

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. 1. Load OFF. 2. The UUT’s voltage is lower than the Cutoff voltage set. 3. The timer has reached the time set. Moreover, 63800 also provides the function of measuring transfer time. This function is mainly to measure the UPS’s transfer time from Main power to Battery mode. However, the transfer time can only be used in CR mode under AC mode.

For switching to Timing mode, its setting methods are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER to enter SETUP.

3. Move the cursor direction key ( ▲, ▼ ) to “1-6. TIMING MODE”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “HOLDUP”, then

press ENTER.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-38 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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F

S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = H O L D U P / T R A N S F E R / O F F 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

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 . 0 0 0

H O L D U

P

A C

5. Press CC, CR or CP key to back to main page of timing mode.

Example: CR mode under Timing mode.

V = 0 . 0 0

T

3.10.1 CC Mode

Once under timing mode, if users want to switch to CC mode of timing m ode press CC key then to enter. There are three sub-modes under CC mode: BOTH, CF ONLY and PF ONLY.

If users want to switch to BOTH mode, its setting methods are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

Local Operation

3-39

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = H O L D U P / T R A N S F E R / O F F 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

C F P F P R I O R I T Y = C F / P F

3. Move the cursor ( ▲, ▼ ) to “1-5. CF/PF SETTING”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “BOTH”, then press

ENTER.

5. After pressing ENTER, meanwhile a window will be popped up to request users to key in

CF and PF priorities. .

6. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose the priority you want

then press ENTER. If ENTER is not pressed, a window will not be popped up thus the priority is the setting value of las t time.

7. Press CC key to back to main page of timing mode.

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 current, CF, PF and I

(max) with the Entry keys. The values of CF and PF have

p

(max). Users can type the values of

p

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-40

I s e t = 2 5 . 0 0 0 C F = 1 . 4 1 4 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 . 0 0 0

H O L D U

P

A C P R I O R I T Y : C F

I s e t = 2 5 . 0 0 0 C F = 1 . 4 1 4 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 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 4 1 4 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 . 0 0 0

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 . 0 0 0

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.)

V = 0 . 0 0 T

The procedures of setting I 00:20:00 and CUTOFF V = 110, are described as below:

1. Move the cursor to the command line of “I

2. Press 1 , 8 then press ENTER to c hange the value to “18.000”.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 18.000, CF = 1.5, PF = 0.800, Ip(max) = 20.0, TIME OUT =

set

=”.

set

3. Move the direction by pressing ( ◄, ► ) to t he command line of “CF=”.

4. Press 1 , . , 5 then press ENTER t o c hange the value to “1.500”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

3-41

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 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 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 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 2 0 . 0 T I M E O U T = 0 0 : 0 1 : 0 0 C U T O F F V = 5 0 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 2 0 . 0 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

6. Press 0 , . , 8 then press ENTER t o c hange the value to “0.800”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

Local Operation

8. Press 2 , 0 then press ENTER to c hange the value to “20.0”.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “TIME OUT=”.

10. Move the cursor by pressing ( ◄, ► ) to the command line of “TIME OUT=00:01:00”.

11. Press CLEAR then press ENTER to clear the value to “00:00:00”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-42

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 2 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 2 0 . 0 T I M E O U T = 0 0 : 2 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

I s e t = 1 8 . 0 0 0 C F = 1 . 5 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 2 0 : 0 0 C U T O F F V = 1 1 0 . 0 0 0

If there is error during the procedure of inputting val ue, press CLEAR to clear the value at any time and then input again.

12. Press 2 , 0 then press ENTER to change the value to “00:20:00”.

13. Move the cursor by pressing ( ◄, ► ) to the command line of “CUT OFF V=”.

14. Press 1 , 1 , 0 then press ENTER to change the value to “110.00”.

15. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For detailed information please refer

section

3.4.5.)

For switching to CF only mode, the procedures are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

3. Move the cursor ( ▲, ▼ ) to “1-5. CF/PF SETTING”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “CF”, then press

ENTER.

5. Then press CC to back to main page.

Users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, CF, I

(max), Timeout and Cutoff voltage. Users can type the values with

p

the Entry keys.

3-43

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

V = 0 . 0 0

C U T O F F V = 5 0 . 0 0 0

H O L D U

P

A C C F O N L Y

I s e t = 2 5 . 0 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 . 0 0 0

H O L D U

P

A C P F O N L Y

Local Operation

T

For switching to PF only mode, the procedures are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

3. Move the cursor ( ▲, ▼ ) to “1-5. CF/PF SETTING”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “PF”, then press

ENTER.

5. Then press CC to back to main page.

Users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, PF, I the Entry keys.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

(max), Timeout and Cutoff voltage. Users can type the values wit h

p

V = 0 . 0 0 T

3.10.2 CR Mode

Once under timing mode, if users want to switch to CR mode of timing m ode press CR key then to enter. There are three sub-modes under CC mode: BOTH, CF ONLY and PF ONLY.

CR mode page is s hown as below. Users can press the arrow key to select the setting parameters on the LCD display, including resistor v alue, I Users can type the values with the Entry keys.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

(max), Timeout and Cuto ff v ol ta ge.

rms

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-44

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 . 0 0 0

H O L D U

P

A C

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 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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

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 : 0 0 C U T O F F V = 5 0 . 0 0 0

V = 0 . 0 0

T

The procedures of setting R OFF V = 30, are described as below:

1. Move the cursor to the command line of “R

2. Press 1 , 5 then press ENTER to c hange the value to “15.000”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “I

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 15.000, I

set

(max) = 2 5.0, TIMEOUT = 00:00:10 and CUT

rms

=”.

set

(max)=”.

rms

4. Press 2 , 5 then press ENTER to c hange the value to “25.0”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOU T =”.

6. Press 1 , 0 then press ENTER to c hange the value to “00:00:10”.

Local Operation

3-45

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 . 0 0 0

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 = 3 0 . 0 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

P s e t = 1 0 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 . 0 0 0

H O L D U

P

A C C F O N L Y

7. Move the cursor by pressing ( ◄, ► ) to the command line of “CUT OFF V=”.

8. Press 3 , 0 then press ENTER to c hange the value to “30.000”.

9. Aft er setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (For detailed information please refer

section

3.4.5.)

3.10.3 CP Mode

Once under timing mode, if users want to switch to CP mode of timing mode press CP key then to enter. There are also have CF ONLY, PF ONLY and BOTH under CP mode for selection. Its operation methods are the same as CC mode; about the setting method please refer section

CP mode page is shown as below. Users can press t he arrow key to select the setting parameters on the LCD display, including power, CF, I Users can type the values with the Entry keys.

3.10.1.

(max), Time out and Cut off voltage.

p

V = 0 . 0 0 T

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-46

[ R E C T I F I E D L O A D

]

Rs Ls

R

L

C

C H O O S E = 1 1 . R L C M O D E 2 . C P M O D E

R s = 1 . 1 0 0 L s = 2 0 0 C = 2 0 0 0 R L = 5 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 . 0 0 0

H O L D U

P

A C

[ R E C T I F I E D L O A D

]

Rs Ls

R

L

C

C H O O S E = 2 1 . R L C M O D E 2 . C P M O D E

3.10.4 Rectified Load Mode

Press RLC/DC RECT key t o ent er 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.

For entering RLC MODE, users can enter Rectified Load Mode of timing mode by pressing RLC/DC RECT key and then select 1.RLC mode and press Enter.

After pressing Enter, the page of RLC mode can be seen is show n as belo w. Users can press the arrow key to select the setting parameters on the LCD display, including equivalent series resistance R equivalent parallel load resistance R the values with the Entry keys.

, equivalent series inductance Ls, equivalent parallel load capacitance C,

s

, Ip(max), Time out and Cut off voltage. Users can type

L

V = 0 . 0 0 T

For entering CP MODE, users can enter Rectified Load Mode of timing mode by pressing RLC/DC RECT key and then selects 2.CP mode as well as presses Enter.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

Local Operation

3-47

P s e t = 1 0 0 . 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 . 0 0 0

H O L D U

P

A C P R I O R I T Y : C F

P s e t = 1 0 0 . 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 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

P s e t = 3 5 0 . 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 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

P s e t = 3 5 0 . 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 t he values with the Entry keys.

p

set

,

V = 0 . 0 0 T

The procedures of setting P CUTOFF V = 21, are described as below:

1. Move the cursor to the command line of “P

2. Press 3 , 5 , 0 then press ENTER to change the value to “350.00”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “PF=”.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 350.00, PF = 0.8, Ip(max) = 35.0, TIMEOUT = 00:00:20 and

set

=”.

set

4. Press 0 , . , 8 then press ENTER t o c hange the value to “0.800”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-48

P s e t = 3 5 0 . 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 3 5 . 0 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

P s e t = 3 5 0 . 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 3 5 . 0 T I M E O U T = 0 0 : 0 0 : 2 0 C U T O F F V = 5 0 . 0 0 0

P s e t = 3 5 0 . 0 0 P F = 0 . 8 0 0 I p ( m a x ) = 3 5 . 0 T I M E O U T = 0 0 : 0 0 : 2 0 C U T O F F V = 2 1 . 0 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

6. Press 3 , 5 then press ENTER to c hange the value to “35.0”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOU T =”.

8. Press 2 , 0 then press ENTER to c hange the value to “00:00:20”.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “CUT OFF V=”.

10. Press 2 , 1 then press ENTER to change the value to “21.000”.

11. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

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 i s disconnec ted and reconnected. A voltage is below 7.5V is considered as power disconnection and above 7.5V as power reconnection. The below figure is the measurement waveform of off-line UPS transfer time.

3-49

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

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 = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = T R A N S F E R / O F F / H O L D U P 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

The methods for entering transfer time are described as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER to enter SETUP.

Local Operation

3. Move the cursor ( ▲, ▼ ) to “1-6. TIMING MODE”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “TRANSFER”, then

press ENTER.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-50

R s e t = 2 0 . 0 0 I r m s ( m a x ) = 5 0 .

0

T R A N S F E

R

A C T R A N S F E R

This TRANSFER function is only using in AC CR mode of Timing mode as ABA (Auto Bandwidth Adjustment) mode is enabled.

R s e t = 2 0 . 0 0 I r m s ( m a x ) = 5 0 . 0 U N I T : Ω , A

R s e t = 3 3 . 0 0 I r m s ( m a x ) = 5 0 . 0 U N I T : Ω , A

R s e t = 3 3 . 0 0 I r m s ( m a x ) = 2 2 . 0 U N I T : Ω , A

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

5. Then press CR to back to main page.

V = 0 . 0 0

T

The procedures of setting R

1. Move the cursor to the command line of “R

2. Press 3 , 3 then press ENTER to c hange the value to “33.00”.

I = 0 . 0 0

= 0 . 0 0 m

= 33.00, and I

set

(max) = 22.0, are described as below:

rms

=”.

set

s

3. Move the cursor by pressing ( ◄, ► ) to the command line of “I

4. Press 2 , 2 then press ENTER to c hange the value to “22.0”.

5. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (The detailed information please refers

section

3.4.5.)

(max)=”.

rms

Local Operation

3-51

R s e t = 2 0 . 0 0 I r m s ( m a x ) = 4 5 .

0

T R A N S F E

R

A C T R A N S F E R

DC load simulation belongs to additional function, it only provides simple are needed, please purchase Chroma’s pure DC electronic load.

CC, CR and CP all can be operated in UUTs with voltage source output form under specification condition of DC m od e.

 The descripti ons of me a s uring transfer time

1. Set R

2. Load ON by pressing LOAD ON/OFF.

3. Remove main power of UPS, to ma ke the UP S to switch from main power mode to battery

mode.

4. The results will be shown on LCD display as below page.

set

and I

(max).

rms

V = 2 2 0 .

T

= 5 . 1 5 m

0

I = 1 1 . 0

s

3.11 DC Load Simulation

The functions of the 63800 ser ies 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).

loading. If other advanced functions dynamic loading, parallel loading, etc

User can select the mode by pressing CC, CR, CP, CV or RLC/DC RECT keys under the FUNCTION keypad. The parameters in current, resistance, voltage, power or rectified mode can be programmed easily when the mode is selected.

All data set in CC/CR/CP/CV/Rectified mode will be rescaled to fit the resolution of current/voltage levels or slew rate. In local mode any value can be set to the Load from the keypad. There are no upper and lower limits that would cause an error. The Load automatically selects data, which is rescaled from the programmed value, truncates and checks high, low boundary before fitting it into the memory. When the programmed data is over the boundary, the Load will set the maximum or minimum level for it. In remote mode the programmed value cannot be over boundary. An error will occur when data is over the maximum or minimum value. It is necessary to set UUT’s output maximum current value I

(max) in DC all modes. The value Ip(max) is for 63800 to test UUT’s output impedance for

p

getting system optimum.

Because 63800’s power-on default value is AC mode. If user wants to change to DC mode, the methods are described as below.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-52

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

1 - 1 . M O D E S E L E C T = D C / A C [ S E T U P ] 1 - 2 . S H O R T = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = O F F / H O L D U P / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

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 . 0 A

D C

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER to enter SETUP.

3. Move the cursor ( ▲, ▼ ) to “1-1. MODE SELECT”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “DC”, then press

ENTER.

5. Then press CC, CR, CP, CV or RLC/DC RECT to back to main page of DC mode.

Example: CC mode under DC mode.

V = 0 . 0 0

I = 0 . 0 0

DC mode has five kinds of modes for using: CC, CR, CP, CV and Rectified Mode. The detailed setting descriptions are as follows.

P = 0 . 0 0



Local Operation

3-53

I s e t = 1 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

D C

I s e t = 1 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

3.12 DC Load Simulation -- 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 Ip(max) for load to test UUT output impedance.

Slew Rate (Rise, Fall A/ms): Slew rate determines the rate of change of the input current from one load level to another. There are two slew rate values, which are rise rate and fall rate.

The CC mode can be set by CC key in the front panel, users can press the arrow key to select the setting parameters on the LCD display, including current RMS value, slew rate (rise, fall A/ms), and I

(max). Users can type the values with the Entry keys.

p

I current setting Load Current

V Input Voltage

Figure 3-11 Constant Current Mode

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0

The procedures of setting I

I

(max) = 20.0, are described as below:

p

1. Move the cursor to the command line of “I

2. Press 1 , 8 then press ENTER to c hange the value to “18.0”.

= 18.0 , Ri sing slew rate = 115, Falling slew rate = 115, and

set

=”.

set



Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-54

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

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

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 ) = 1 0 0 . 0 A

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

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

3. Move the curs or by pressing ( ◄, ► ) to the c ommand li ne of “ =”.

4. Press 1 , 1 , 5 then press ENTER to change the value to “115”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

6. Press 1 , 1 , 5 then press ENTER to change the value to “115”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

8. Press 2 , 0 then press ENTER to c hange the value to “20.0”.

9. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (The detailed information please refers

section

3.4.5.)

Local Operation

3-55

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

D C

3.13 DC Load Simulation -- 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. Slew rate determines the rate that the load level changes from one state to another.

Slew Rate (Rise, Fall A/ms): Slew rate determines the rate at which the current input of changes to a newly programmed value. There are two slew rate values, which are rise rate and fall rate.

The CR mode can be set by CR key in the front panel, users can press the arrow key to select the setting parameters on the LCD display, including resistor value, slew rate (rise, fall A/ms), and I

(max). Users can type the values with the Entry keys.

p

V

Input Voltage Slope (R setting) I Load Current

Figure 3-12 Constant Resistance Mode

V = 0 . 0 0

I = 0 . 0 0

The procedures of setting R

I

(max) = 25.0, are described as below:

p

1. Move the cursor to the command line of “R

= 30.0, Rising slew rate = 105, Falling slew rate = 105, and

set

P = 0 . 0 0

=”.

set



Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-56

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

I s e t = 3 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

R s e t = 3 0 . 0 A = 1 0 5 A / m s = 1 0 0 A / m s I p ( m a x ) = 1 0 0 . 0 A

R s e t = 3 0 . 0 A = 1 0 5 A / m s = 1 0 5 A / m s I p ( m a x ) = 1 0 0 . 0 A

R s e t = 3 0 . 0 A = 1 0 5 A / m s = 1 0 5 A / m s I p ( m a x ) = 1 0 0 . 0

R s e t = 3 0 . 0 A = 1 0 5 A / m s = 1 0 5 A / m s I p ( m a x ) = 2 5 . 0 A

2. Press 3 , 0 then press ENTER to c hange the value to “30.0”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

4. Press 1 , 0 , 5 then press ENTER to change the value to “105”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

6. Press 1 , 0 , 5 then press ENTER to change the value to “105”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

8. Press 2 , 5 then press ENTER to c hange the value to “25.0”.

9. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

Local Operation

3-57

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

V s e t = 1 0 0 . 0 0 V I m a x = 4 5 . 0 0 A

D C

V s e t = 1 0 0 . 0 0 V I m a x = 4 5 . 0 0 A

3.14 DC Load Simulation -- Constant Voltage Mode

In CV mode the Load will sink current to control the voltage source according to programmed value. User can set the V

CV mode can be entered by pressing the CV key. Enter the voltage and current values with the keypad.

V Voltage setting Input Voltage

I Load Current

Figure 3-13 Constant Voltage Mode

and I

set

value in this mode.

max

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0

The procedures of setting V

1. Move the cursor to the command line of “V

2. Press 5 , 0 then press ENTER to c hange the value to “50.00”.

= 50.00, and I

set

= 21.00, are described as below:

max

=”.

set

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-58

V s e t = 5 0 . 0 0 V I m a x = 4 5 . 0 0 A

V s e t = 5 0 . 0 0 V I m a x = 2 1 . 0 0 A

1. If there is error during the procedures of inputting v alue, press CLEAR to

0

0.1

0.2

0.3

0.4

0.5

0.6

0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4

mF

ESR

max

min

3. Move the cursor by pressing ( ◄, ► ) to the command line of “I

4. Press 2 , 1 then press ENTER to c hange the value to “21.00”.

5. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn

on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

max

=”.

clear the value at any time and then input again.

2. DC_CV mode limits are used in UUTs with current source output form. The limits are listed as the fo llowing . i. Instrument F/W version 1.53Beta(included) above is need. ii. DC mode ABA is set to ENABLE. iii. The operating minimum load current needs to be larger 2A. iv. The UUT’s output equivalent capacitance limit curve is shown as

below. X axis is UUT’s output capacitance, Y axis is UUT’s output capacitance equivalent serial (ESR) (unit: Ω). The UUT’s output equivalent capacitance needs to be larger 300µF.

Local Operation

3-59

P s e t = 2 5 0 0 . 0 0 W I p ( m a x ) = 1 0 0 . 0 0 A

D C

P s e t = 2 5 0 0 . 0 0 W I p ( m a x ) = 1 0 0 . 0 0 A

3.15 DC Load Simulation -- 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. That is, take the measured V data, divide the Power setting and get the I setting value. Besides, it is needed to aware when the output power over the maximum power can be outputted. The load will show now is already the maximum power on the panel, the warning of loading power can not be higher.

The CR mode can be set by CP key in the front panel, users can press the arrow key to select the setting parameters on the LCD display, including power and Ip(max). Users can type the values with the Entry keys.

I Load Power setting Current P = V * I

V Input Voltage

Figure 3-14 Constant Power Mode

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0

The procedures of setting P

1. Move the cursor to the command line of “P

2. Press 1 , 5 , 5 , 0 then press ENTER to change the value to “1550.00”.

= 1550.00, and Ip(max) = 30.00, are described as below:

set

=”.

set



Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-60

P s e t = 1 5 5 0 . 0 0 W I p ( m a x ) = 1 0 0 . 0 0 A

P s e t = 1 5 5 0 . 0 0 W I p ( m a x ) = 3 0 . 0 0 A

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

I s e t = 1 0 .

0. A C F = 1 . 4 1 4 L I N E S Y N C = N O F = 1 2 0 . 0 H z I p ( m a x ) = 1 0 0 . 0 A

D C R E C T I F I E D

3. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

4. Press 3 , 0 then press ENTER to change the value to “30.00”.

5. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. (The detailed information please refers

section

3.4.5.)

3.16 DC Load Simulation -- Rectified Load Mode

The general DC input/AC output products such as DC to AC inverter; its input current is not always DC. However, the load current is often similar to the current loaded by r ec t if ied load, thus this mode is designed to simulate a period of load current under CC mode.

Press RLC/DC RECT key to go into the DC Rectified mode, users can set the I select the LINE SYNC to be the reference loading frequency, the maximum current value I

(max) of UUT is also required to be set.

p

The load current under rectified mode is shown as Figure 3-15, 3-16 and 3-17. This load current is rectified sine wave so needs to set CF value.

If users do not choose LINE SYNC as reference period then set loading frequency is needed as below shown.

, CF and

set

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 I p = 0 . 0 0

Local Operation

3-61

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 W A V E = A L L P H A S E = 9 0 I p ( m a x ) = 1 0 0 . 0

A

D C R E C T I F I E D

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. If users choose LINE SYNC=YES, then users should set the PHASE. The PHASE is the delay angle of loading current which refer to power line voltag e.

The loading conditions of the following three figures (Figure 3-15, Figure 3-16 and Figure 3-17) are the waveforms getting from V waveform on the top (Channel 1) is DC voltage V line voltage of frequency 60Hz and on the bottom (Channel 4) is load cur rent.

source

=60VDC, I

=10A, CF=2, LINE SYNC=YES. The

set

, on the medium (Channel 2) is power

source

Figure 3-15 All Figure 3-16 Positive Figure 3-17 Negative

ALL: Using the power line frequency as the reference frequency for the load current, for the ALL setting, both positive and negative half period of the power line is loading V This load frequency is two times of power line frequency (please refer Figure 3-15). For example: power line frequency is 60Hz thus the load frequency of the current is 120Hz.

Positive: Using the power line frequency as the reference frequency for the load current, for the Positive setting, the positive half period of the power line is loading V frequency is the same as power line frequency (please refer Figure 3-16, Figure 3-17). For example: power line frequency is 60Hz thus the load frequency of the current is 60Hz.

Negative: Using the power line frequency as the reference frequency for the load current, for the Negative setting, the negative half period of the power line is loading V load frequency is the same as power line frequency (please refer Figure 3-16, Figure 3-17). For example: power line frequency is 60Hz thus the load frequency of the current is 60Hz.

The setting pages of the three kinds of load current waveforms are shown as below.

ALL

(UUT). This load

source

(UUT).

source

(UUT). This

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 I p = 0 . 0 0

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-62

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 W A V E = P O S I T I V E P H A S E = 9 0 I p ( m a x ) = 1 0 0 . 0

A

D C R E C T I F I E D

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 W A V E = N E G A T I V E P H A S E = 9 0 I p ( m a x ) = 1 0 0 . 0

A

D C R E C T I F I E D

POSITIVE

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 I p = 0 . 0 0

NEGATIVE

V = 0 . 0 0 P = 0 . 0 0

I = 0 . 0 0 I p = 0 . 0 0

3.16.1 Crest Factor in Rectified Mode Explanation

The load current in rectified mode are shown in Figure 3-15, Figure 3-16 and Figure 3-17; it’s a rectified sine wave, therefore the CF value needs to be set.

3.17 DC Load Simulation -- Timing Mode

Timing Mode can be executed CC, CR, CP, CV and Rectified mode under the DC mode. The timer starts after Load ON. There are three different conditions for the times to stop. 1. Load OFF. 2. The UUT voltage drops below the cutoff voltage setting. 3. The timer has reached the time set.

To switch to Timing mode, the methods are as follows.

1. Press CONF./LOCAL key.

2. Press 1 , then press ENTER t o enter SETUP.

Local Operation

3-63

[ 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 . D I S P L A Y S E L E C T I O N 5 . F A C T O R Y D E F A U L T 6 . M O D E L I N F O R M A T I O N 7 . P A R A L L E L M O D E

1 - 1 . M O D E S E L E C T = D C / A C [ S E T U P ] 1 - 2 . S H O R T = O F F / T O G G L E / H O L D 1 - 3 . L O C K M O D E = R O T A R Y / K E Y P A D / A L L 1 - 4 . S O U N D = O N / O F F 1 - 5 . C F / P F S E T T I N G = B O T H / C F / P F 1 - 6 . T I M I N G M O D E = H O L D U P / O F F / T R A N S F E R 1 - 7 . E X T E R N A L = O F F / O N 1 - 8 . A B A M O D E = E N A B L E / D I S A B L E

I s e t = 1 0 . 0 0 0 A = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 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 . 0 0 0

H O L D U

P

D C

3. Move the cursor ( ▲, ▼ ) to “1-6. TIMING MODE”.

4. Press the direction key ( ◄, ► ) or rotate the rotary knob to choose “HOLDUP”, then press ENTER.

5. Press CC, CR, CV, CP or RLC/DC RECT key to return to the main page of timing mode.

Example: CC mode under Timing mode.

V = 0 . 0 0

T

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-64

I s e t = 1 0 . 0 0 0 A = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 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 . 0 0 0

H O L D U

P

D C

I s e t = 1 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 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 . 0 0 0

3.17.1 CC Mode

Under timing mode to enter CC timing mode press the CC key. In this mode the loading current (I time and cutoff voltage of the UUT can be set

), rise and fall slew rate, maximum current value Ip(max), as well as the timeout

set

V = 0 . 0 0

T

The procedures of setting I = 20.0, Timeout = 24:00:00, and Cutoff V = 30, are described as below:

1. Move the cursor to the command line of “I

2. Press 1 , 8 then press ENTER to change the value to “18.0”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 18.0, Rising slew rate = 115, Falling slew rate = 115, Ip(max)

set

=”.

set

4. Press 1 , 1 , 5 then press ENTER to change the value to “115”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

3-65

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 . 0 0 0

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 ) = 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 . 0 0 0

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 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 ) = 2 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 . 0 0 0

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 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

6. Press 1 , 1 , 5 then press ENTER to change the value to “115”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

Local Operation

8. Press 2 , 0 then press ENTER to change the value to “20.0”.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

10. Move the cursor by press ing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

11. Press 2 , 4 then press ENTER to change the value to “24:00:00”.

12. Move the cursor by press ing ( ◄, ► ) to the command line of “CUTOFF V=”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-66

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 T I M E O U T = 2 4 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 T I M E O U T = 2 4 : 0 0 : 0 0 C U T O F F V = 3 0 . 0 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

R s e t = 1 0 . 0 0 0 Ω = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 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 . 0 0 0

H O L D U

P

D C

R s e t = 1 0 . 0 Ω = 1 0 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 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 . 0 0 0

13. Press 3 , 0 then press ENTER to change the value to “30.000”.

14. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

3.17.2 CR Mode

Under timing mode to enter CR timing mode press the CR key. In this mode the loading resistance (R

I

(max), as well as the timeout time and cutoff voltage of the UUT can be set.

p

), rise and fall slew rate, maximum current value

set

V = 0 . 0 0

T

The procedures of setting R

I

(max) = 25.0, Timeout = 00:15:00, and Cutoff V = 10.5, are described as below:

p

1. Move the cursor to the command line of “R

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 27.5, Rising slew rate = 160, Falling slew rate = 160,

set

=”.

set

Local Operation

3-67

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 . 0 A T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

R s e t = 2 7 . 5 Ω = 1 6 0 A / m s = 1 0 0 A / m s I p ( m a x ) = 5 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 . 0 0 0

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 ) = 5 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 . 0 0 0

2. Press 2 , 7 , . , 5 then press ENTER t o chang e the value to “27.5”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

4. Press 1 , 6 , 0 then press ENTER to change the value to “160”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “ =”.

6. Press 1 , 6 , 0 then press ENTER to change the value to “160”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

8. Press 2 , 5 then press ENTER to c hange the value to “25.0”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-68

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 T I M E O U T = 0 0 : 0 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 T I M E O U T = 0 0 : 1 5 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 T I M E O U T = 0 0 : 1 5 : 0 0 C U T O F F V = 1 0 . 5 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

9. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

10. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

11. Press 1 , 5 then press ENTER to change the value to “00:15:00”.

12. Move the cursor by pressing ( ◄, ► ) to the command line of “CUTOFF V=”.

13. Press 1 , 0 , . , 5 then press ENTER to change the value to “10.500”.

14. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

3-69

3.17.3 CP Mode

P s e t = 1 0 0 . 0 0 W I p ( m a x ) = 5 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 . 0 0 0

H O L D U

P

D C

P s e t = 1 0 0 . 0 0 W I p ( m a x ) = 5 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 . 0 0 0

P s e t = 3 0 0 . 0 0 W I p ( m a x ) = 5 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 . 0 0 0

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 . 0 0 0

Under timing mode to enter CP timing mode press the CP key. In this mode the loading power (P

time and cutoff voltage of the UUT can be set.

), maximum current value Ip(max), as well as the timeout

set

V = 0 . 0 0

Local Operation

T

The procedures of setting P

9.5, are described as below:

1. Move the cursor to the command line of “P

2. Press 3 , 0 , 0 then press ENTER to change the value to “300.00”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 300.00, Ip(max) = 16.0, Timeout = 00:10:15, and Cutoff V =

set

=”.

set

4. Press 1 , 6 then press ENTER to c hange the value to “16.0”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-70

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 . 0 0 0

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 : 1 0 : 0 0 C U T O F F V = 5 0 . 0 0 0

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 : 1 0 : 1 5 C U T O F F V = 5 0 . 0 0 0

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 : 1 0 : 1 5 C U T O F F V = 9 . 5 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

6. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00: 00:00”.

7. Press 1 , 0 then press ENTER to c hange the value to “00:10:00”.

8. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:10:00”.

9. Press 1 , 5 then press ENTER to c hange the value to “00:10:15”.

10. Move the cursor by pressing ( ◄, ► ) to the command line of “CUTOFF V=”.

11. Press 9 , . , 5 then press ENTER to c hange the value to “9.500”.

12. After setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

3-71

3.17.4 CV Mode

V s e t = 1 0 0 . 0 0 V I m a x = 5 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 . 0 0 0

H O L D U

P

D C

V s e t = 2 0 0 . 0 0 V I p ( m a x ) = 5 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 . 0 0 0

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 . 0 0 0

Under timing mode to enter CV timing mode press the CV key. In this mode the loading voltage (V

time and cutoff voltage of the UUT can be set.

), maximum current value Ip(max) , as w el l as the ti meout

set

V = 0 . 0 0

Local Operation

T

The procedures of setting V

8.5, are described as below:

1. Move the cursor to the command line of “V

2. Press 2 , 0 , 0 then press ENTER to change the value to “200.00”.

3. Move the cursor by pressing ( ◄, ► ) to the command line of “Ip(max)=”.

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

= 200.00, Ip(max) = 29.0, Timeout = 00:00:05, and Cutoff V =

set

=”.

set

4. Press 2 , 9 then press ENTER to c hange the value to “29.0”.

5. Move the cursor by pressing ( ◄, ► ) to the command line of “TIMEOUT=00:00:00”.

Programmable AC/DC Electronic Load 63800 Series Operation & Programming Manual

3-72

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 . 0 0 0

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 5 C U T O F F V = 5 0 . 0 0 0

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 5 C U T O F F V = 8 . 5 0 0

If there is error during the procedures of inputting value, press CLEAR to clear the value at any time and then input again.

I s e t = 5 . 0 0 C F = 1 . 4 1 4 L I N E S Y N C = N O F = 1 2 0 I p ( m a x ) = 5 0 . 0 T I M E O U T = 0 0 : 0 0 : 0 0

C U T O F F V = 5 0 . 0 0 0

H O L D U

P

D C

6. Press 5 then press ENTER to change the value to “00:00:05”.

7. Move the cursor by pressing ( ◄, ► ) to the command line of “CUTOFF V =”.

8. Press 8 , . , 5 then press ENTER t o c hange the value to “8.500”.

9. Aft er setting the parameter of the load, the LOAD ON/OFF key should be pressed to turn on the load, so that the load can sink the current. (The detailed information please refer

section

3.4.5.)

3.17.5 Rectified Mode

Under timing mode to enter DC rectified timing mode press the RLC/DC RECT key. In this mode the loading power I

value I selects YES, the frequency of loading current will load by frequency of the main voltage. On the contrary, the loading current will load by users’ inputted frequency.

(max) of the UUT. The loading timeout tim e and cutoff voltage can be set. If LINE sync.

p

the value CF, LINE sync., frequency, maximum current

set,

V = 0 . 0 0

T

= 0 0 : 0 0 : 0 0 : 0 0 0 m s

Chroma 63800 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. General Information

1.1 Introduction

1.2 Overview of Key Fe atures

1.3 Description

1.4 Specifications

Model

AC Section

Constant Current Mode

Constant Current Mode

1.5 Names of Parts

1.5.1 The Front Panel

1.5.2 The Rear Panel

2. Installation

2.1 Introduction

2.2 Inspection

2.3 Installing

2.3.1 Preparation for Use

2.3.2 Changing Line Voltage

2.3.3 Turn-On Self-Test

2.4 Application Connection

2.4.1 Load Connections

3. Local Operation

3.1 Introduction

3.2 Local/Remote Control

3.3 Modes of Operation

3.4 Local Operatio n

3.4.1 Setting the Configuration

3.4.2 External ON/OFF

3.4.3 Goi ng To Local

3.4.4 Online Change Loading

3.4.5 Load ON/OFF

3.4.6 The Relationship of Crest Factor and Power Factor

3.4.8 Lock Mode

3.5 AC Load Simulation

3.6 AC Load Simulation -- Constant Current Mode

3.6.1 BOTH

3.6.2 CF Only

3.6.3 PF Only

3.8 AC Load Simulation -- Constant Power Mode

3.8.1 BOTH

3.8.2 CF Only

3.8.3 PF Only

3.9 AC Load Simulation -- Rectified Load Mode

3.9.1 RLC Mode

3.9.2 CP Mode

3.9.3 Inrush Current Mode

3.10 AC Load Simulation -- Timing Mode

3.10.1 CC Mode

3.10.2 CR Mode

3.10.3 CP Mode

3.10.4 Rectified Load Mode

3.10.5 Setting Timing Mode Values for Transfer Time

3.11 DC Load Simulation

3.12 DC Load Simulation -- Constant Current Mode

3.14 DC Load Simulation -- Constant Voltage Mode

3.15 DC Load Simulation -- Constant Power Mode

3.16 DC Load Simulation -- Rectified Load Mode

3.16.1 Crest Factor in Rectified Mode Explanation

3.17 DC Load Simulation -- Timing Mode

3.17.1 CC Mode

3.17.2 CR Mode

3.17.3 CP Mode

3.17.4 CV Mode

3.17.5 Rectified Mode