Kikusui PLZ-4W Series User manual

Part No. IB020912
Sep. 2010
USERS MANUAL
ELECTRONIC LOAD PLZ-4W Series
PLZ 164W
PLZ 164WA
PLZ 334W
PLZ 664WA
PLZ1004W

Operation Manual
Setup Guide
The setup guide is intended for first-time users of the PLZ-4W series. It gives an overview of the PLZ-
4W series, connecting procedures, safety precautions, etc. Please read through and understand this
guide before operating the product.
Quick Reference
The quick reference briefly explains the panel description and the basic operation of the PLZ-4W.
User’s Manual (This manual)
User’s manual is intended for first-time users of the PLZ-4W series. It gives an overview of the PLZ-
4W series and describes various settings, measurement procedures, maintenance, safety precautions,
etc.
Communication Interface Manual
The Communication Interface Manual explains the settings and commands for remotely controlling the
PLZ-4W series, using the communication interface and gives sample programs. The interface Manual
is provided on the accompanying CD-ROM.
The interface manual is written for readers with sufficient basic knowledge of how to control instru-
ments using a personal computer.
Please read through and understand the Operation Manual before operating the product. After reading,
always keep the manuals nearby so that you may refer to it as needed. When moving the product to another
location, be sure to bring the manuals as well.
If you find any incorrectly arranged or missing pages in the manual, they will be replaced. If the manual
gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/
agent, and provide the “Kikusui Part No.” given on the cover.
The Operation Manual has been prepared with the utmost care; however, if you have any questions, or note
any errors or omissions, please contact Kikusui distributor/agent.
Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and/or
other countries.
Other company names and product names used in this manual are generally trademarks or registered trade-
marks of the respective companies.
Reproduction and reprinting of operation manual, whole or partially, without our permission is prohibited.
Both unit specifications and manual contents are subject to change without notice.
Copyright© 2010 Kikusui Electronics Corporation

PLZ-4W Safety Symbols I
Indicates an imminently hazardous situation which, if ignored,
will result in death or serious injury.
Indicates that a high voltage (over 1000 V) is used here. Touch-
ing the part causes a possibly fatal electric shock. If physical
contact is required by your work, start work only after you make
sure that no voltage is output here.
Indicates a potentially hazardous situation which, if ignored,
could result in death or serious injury.
Indicates a potentially hazardous situation which, if ignored, may
result in damage to the product and other property.
Shows that the act indicated is prohibited.
Is placed before the sign “DANGER,” “WARNING,” or “CAU-
TION” to emphasize these. When this symbol is marked on the
product, see the relevant sections in this manual.
Indicates a protective conductor terminal.
Indicates a chassis (frame) terminal.
OR
WARNING
CAUTION
DANGER
Safety Symbols
For the safe use and safe maintenance of this product, the following
symbols are used throughout this manual and on the product. Under-
stand the meanings of the symbols and observe the instructions they
indicate (the choice of symbols used depends on the products).

II Safety Precautions PLZ-4W
Safety Precautions
The following safety precautions must be observed to avoid fire haz-
ard, electrical shock, accidents, and other failures. Keep them in mind
and make sure that all of them are observed properly.
Users
• This product must be used only by qualified personnel who understand the con-
tents of this operation manual.
• If it is handled by disqualified personnel, personal injury may result. Be sure to han-
dle it under supervision of qualified personnel (those who have electrical knowl-
edge.)
• This product is not designed or manufactured for general home or consumer use.
Purposes of use
• Do not use the product for purposes other than those described in the operation
manual.
Input power
• Use the product with the specified input power voltage.
• For applying power, use the power cord provided. Note that the provided power
cord is not use with some products that can switch among different input power
voltages or use 100 V and 200 V without switching between them. In such a case,
use an appropriate power cord.
Fuse
• With products with a fuse holder on the exterior surface, the fuse can be replaced
with a new one. When replacing a fuse, use the one which has appropriate shape,
ratings, and specifications.
Cover
• There are parts inside the product which may cause physical hazards. Do not
remove the external cover.
Operation
Manual
Line
Voltage

PLZ-4W Safety Precautions III
Installation
• When installing products be sure to observe 2.2, “Precautions Concerning Instal-
lation Location” described in this manual.
• To avoid electrical shock, connect the protective ground terminal to electrical
ground (safety ground).
• When connecting the power cord to a switchboard, be sure work is performed by
a qualified and licensed electrician or is conducted under the direction of such a
person.
• When installing products with casters, be sure to lock the casters.
Relocation
• Turn off the power switch and then disconnect all cables when relocating the
product.
• Use two or more persons when relocating the product which weights more than
20 kg. The weight of the products can be found on the rear panel of the product
and/or in this operation manual.
• Use extra precautions such as using more people when relocating into or out of
present locations including inclines or steps. Also handle carefully when relocat-
ing tall products as they can fall over easily.
• Be sure the operation manual be included when the product is relocated.
Operation
• Check that the AC input voltage setting and the fuse rating are satisfied and that
there is no abnormality on the surface of the power cord. Be sure to unplug the
power cord or stop applying power before checking.
• If any abnormality or failure is detected in the products, stop using it immediately.
Unplug the power cord or disconnect the power cord from the switchboard. Be
careful not to allow the product to be used before it is completely repaired.
• For output wiring or load cables, use connection cables with larger current capac-
ity.
• Do not disassemble or modify the product. If it must be modified, contact Kikusui
distributor/agent.
Maintenance and checking
• To avoid electrical shock, be absolutely sure to unplug the power cord or stop
applying power before performing maintenance or checking.
• Do not remove the cover when performing maintenance or checking.
• To maintain performance and safe operation of the product, it is recommended
that periodic maintenance, checking, cleaning, and calibration be performed.
Service
• Internal service is to be done by Kikusui service engineers. If the product must be
adjusted or repaired, contact Kikusui distributor/agent.
Check?

IV Contents PLZ-4W
Contents
Safety Symbols ____________________________________________ I
Safety Precautions ________________________________________ II
Chapter 1 General Information 1-1
1.1 About This Manual - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-2
1.2 Product Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-2
1.3 PLZ-4W Series Lineup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
1.4 Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-4
1.5 Overview of Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-6
1.6 Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-8
Chapter 2 Installation and Preparation 2-1
2.1 Checking the Package Contents - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-2
2.2 Precautions Concerning Installation Location - - - - - - - - - - - - - - - - - - - - 2-3
2.3 Precautions When Moving the Unit - - - - - - - - - - - - - - - - - - - - - - - - - - 2-4
2.4 Connecting the Power Cord - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-5
2.5 Grounding (Earth) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-6
2.6 Turning on The Power - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-7
2.7 Checking the ROM Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-9
2.8 Load Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-10
2.8.1 Precautions Concerning Wiring - - - - - - - - - - - - - - - - - - - - - - - 2-10
2.8.2 Connection to the Load Input Terminal on the Rear Panel - - - - - 2-14
2.8.3 Connection to the Load Input Terminal on the Front Panel - - - - 2-17
Chapter 3 For First Time Users 3-1
3.1 What Is an Electronic Load - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-2
3.2 Basic Flow of Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-3
3.3 Operating area of the PLZ-4W - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-6
3.4 Basic Operation Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-7
3.4.1 Operation of the CC Mode - - - - - - - - - - - - - - - - - - - - - - - - - - 3-7
3.4.2 Let's Use CC Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-9
Chapter 4 Names and Functions of Parts 4-1
4.1 Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-2
4.2 Rear Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-4
4.3 Operation Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-6
4.4 Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-12
Chapter 5 Basic Operation 5-1
5.1 Panel Control Basics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-2
5.2 Turning On or Off the Load - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3

PLZ-4W Contents V
5.3 Types of Protection Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-6
5.4 Setting the Protection Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-8
5.5 Operation Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-9
5.6 CC Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-10
5.7 CR Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-13
5.8 CV Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-16
5.9 CP Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-18
5.10 Soft start - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-20
5.11 Lock Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-22
5.12 Short Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-24
5.13 Menu Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-25
5.14 Initialization - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-28
5.15 Response Speed - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-29
Chapter 6 Applied Operation 6-1
6.1 ABC preset memories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-2
6.1.1 Saving to ABC preset memories - - - - - - - - - - - - - - - - - - - - - - - 6-3
6.1.2 Recalling ABC preset memories - - - - - - - - - - - - - - - - - - - - - - - 6-3
6.2 Setup Memory - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-6
6.2.1 Saving to the Setup Memory - - - - - - - - - - - - - - - - - - - - - - - - - - 6-7
6.2.2 Recalling the Setup Memory - - - - - - - - - - - - - - - - - - - - - - - - - - 6-8
6.3 Switching Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-10
6.4 Setting the Slew Rate - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-12
6.5 Using the Elapsed Time Display and the Auto Load Off Timer - - - - - - - 6-13
6.6 Sequence Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-14
6.6.1 Overview of the Normal Sequence - - - - - - - - - - - - - - - - - - - - 6-15
6.6.2 Sequence Editing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-18
6.6.3 Sequence Example (Normal Sequence) - - - - - - - - - - - - - - - - - 6-21
6.6.4 Overview of the Fast Sequence - - - - - - - - - - - - - - - - - - - - - - - 6-27
6.6.5 Fast Sequence Editing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-29
6.6.6 Sequence Example (Fast Sequence) - - - - - - - - - - - - - - - - - - - - 6-31
6.6.7 Executing, Pausing, Stopping the Sequence - - - - - - - - - - - - - - 6-36
6.7 Remote Sensing Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-38
6.8 External Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-39
6.8.1 Overview and Precaution of External Control - - - - - - - - - - - - - 6-39
6.8.2 J1/J2 connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-40
6.8.3 External Control of CC Mode - - - - - - - - - - - - - - - - - - - - - - - - 6-44
6.8.4 External Control of CR Mode - - - - - - - - - - - - - - - - - - - - - - - - 6-50
6.8.5 External Control of CP Mode - - - - - - - - - - - - - - - - - - - - - - - - 6-52
6.8.6 External Control of CV Mode - - - - - - - - - - - - - - - - - - - - - - - - 6-54
6.8.7 External Control of Load On and Load Off - - - - - - - - - - - - - - - 6-56
6.8.8 Trigger Signal Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-57
6.8.9 External Control of the Current Range - - - - - - - - - - - - - - - - - - 6-58
6.8.10 Alarm Signal Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-59
6.9 Monitor Signal Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-60
6.10 Parallel operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-62

VI Contents PLZ-4W
6.10.1 Parallel Operation Using the Same Model - - - - - - - - - - - - - - - - 6-62
6.10.2 Parallel Operation Using Load Boosters - - - - - - - - - - - - - - - - - 6-65
6.10.3 Alarms during Parallel Operation - - - - - - - - - - - - - - - - - - - - - - 6-66
6.10.4 Response Speed during Parallel Operation - - - - - - - - - - - - - - - - 6-66
6.10.5 Slew Rate during Parallel Operation - - - - - - - - - - - - - - - - - - - - 6-66
6.10.6 Canceling the Parallel Operation - - - - - - - - - - - - - - - - - - - - - - 6-66
Chapter 7 Remote Control 7-1
7.1 Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-2
7.2 Interface Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-3
7.2.1 GPIB Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-3
7.2.2 RS232C Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-4
7.2.3 USB Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-6
7.3 Contents of the accompanying CD-ROM - - - - - - - - - - - - - - - - - - - - - - - 7-7
7.3.1 Installing the VISA Library - - - - - - - - - - - - - - - - - - - - - - - - - - 7-8
7.3.2 Installing the Software Application - - - - - - - - - - - - - - - - - - - - 7-10
7.4 Command Details - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-10
Chapter 8 Maintenance and Calibration 8-1
8.1 Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2
8.1.1 Cleaning the Panels - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2
8.1.2 Cleaning the Dust Filter - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2
8.1.3 Inspecting the Power Cord - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-3
8.1.4 Internal Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-3
8.2 Confirming status of the fuse - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-4
8.3 Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-5
8.3.1 Calibration Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-5
8.3.2 Preparation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-6
8.3.3 Calibration Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-7
8.4 Malfunctions and Causes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-14
Chapter 9 Specifications 9-1
9.1 Electrical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9-2
9.2 General Specifications -------------------------------9- 8
9.3 Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9-9
Appendix A-1
A.1 Operating Area of the PLZ-4W - - - - - - - - - - - - - - - - - - - - - - - - - - - - -A-1
A.2 Basic Operation Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -A-2
A.2.1 Operation of the CC Mode - - - - - - - - - - - - - - - - - - - - - - - - - - A-2
A.2.2 Operation of the CR Mode - - - - - - - - - - - - - - - - - - - - - - - - - - -A-4
A.2.3 Operation of the CP Mode - - - - - - - - - - - - - - - - - - - - - - - - - - -A-6
A.2.4 Operation of the CV Mode - - - - - - - - - - - - - - - - - - - - - - - - - - -A-8
A.2.5 Operation of the CC+CV Mode - - - - - - - - - - - - - - - - - - - - - - -A-10

PLZ-4W Contents VII
A.2.6 Operation of the CR+CV Mode - - - - - - - - - - - - - - - - - - - - - - A-12
A.3 Operating Area of Each Model - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-15
A.3.1 Operating Area of the PLZ164W - - - - - - - - - - - - - - - - - - - - - A-15
A.3.2 Operating Area of the PLZ334W - - - - - - - - - - - - - - - - - - - - - - A-16
A.3.3 Operating Area of the PLZ1004W - - - - - - - - - - - - - - - - - - - - - A-17
A.3.4 Operating Area of the PLZ164WA - - - - - - - - - - - - - - - - - - - - A-18
A.3.5 Operating Area of the PLZ664WA - - - - - - - - - - - - - - - - - - - - A-19
A.4 Sequence Program Creation Table - - - - - - - - - - - - - - - - - - - - - - - - - - A-20
Index I- 1

VIII Contents PLZ-4W

PLZ-4W General Information 1-1
Chapter 1 General Information
This chapter gives an overview and introduces the features of the PLZ-4W Series
Electronic Loads.
1
1

1-2 General Information PLZ-4W
1.1 About This Manual
This operation manual covers the following PLZ-4W Series Electronic Loads.
Product version covered
This operation manual covers electronic loads with ROM version 1.3x .
When contacting us about the product, please provide us the following information.
• Model
• ROM version
• Manufacturing number (indicated at the lower section on the rear panel)
For the procedure of confirming the ROM version, see section 2.7, “Checking the
ROM Version.”
1.2 Product Overview
The PLZ-4W Series Electronic Load is a multifunctional system designed to offer
the highest levels of reliability and safety. The electonic load contains a stable and
high-performance current control circuit that enables high-speed load simulations.
In addition, its CPU control feature works to improve operability and multifunc-
tional capability.
The high-precision current settings provide you with sufficient resolution.
Because the electonic load comes standard with GPIB, RS232C, and USB commu-
nication functions, it can easily be incorporated into wide-ranging test and inspec-
tion systems.
• PLZ164W • PLZ164WA
• PLZ334W • PLZ664WA
• PLZ1004W

PLZ-4W General Information 1-3
1.3 PLZ-4W Series Lineup
The PLZ-4W Series consists of the electronic load and the
load booster.
1. Electronic load (PLZ-4W or PLZ-4WA)
2. Load booster (PLZ-4WB)
Two types of the PLZ-4W Series are available depending on the
input operating voltage.
1. Operating range of 1.5 V to 150 V. (PLZ-4W and PLZ-4WB)
2. Operating range of 0 V to 150 V. (PLZ-4WA)
■ Electronic load
■ Load booster
Model Maximum Operating
Current (A)
Operating
Voltage (V) Wattage (W)
PLZ164W 33
1.5 to 150
165
PLZ334W 66 330
PLZ1004W 200 1 000
PLZ164WA 33
0 to 150
165
PLZ664WA 132 660
Model Maximum Operating
Current (A)
Operating
Voltage (V) Wattage (W)
PLZ2004WB
*1
*1. PLZ2004WB is a dedicated option for PLZ1004W.
400 1.5 to 150 2 000

1-4 General Information PLZ-4W
1.4 Features
In addition to the high-performance constant current, constant resistance, and con-
stant power modes, the PLZ-4W Series Electronic Load offers wide variety of other
features.
■ High-speed slew rate of 16 A/ μ s (PLZ1004W)
The rise and fall slew rate of the current when switching at 2 % to 100 % (20 % to
100 % in M range) of the rated current in constant current mode is 16 A/ μ s
(PLZ1004W), which converts to rise and fall times of 10 μ s (all types).
This allows you to conduct more accurate DC power transient response tests and to
generate simulated waveforms for use as dummy loads.
■ Variable slew rate
Unlike the conventional electronic loads that were configured using rise and fall
times, the PLZ-4W allows configuration using slew rates (A/ μ s) in constant current
and constant resistance modes.
This allows you to optimize the voltage drop caused by the wire inductance that
occurs when a load is switched or the transient control of the equipment under test
(such as a constant voltage power supply).
■ Higher precision
Higher precision is offered for current settings.
Resolution at low current settings is provided using a 3-range configuration. (A 0.01
mA resolution is possible at the L range of the PLZ164W.)
■ Operability
The PLZ-4W employs a large LCD.
Measured values of voltage, current, and power at the load input terminal are indi-
cated at all times. The values are indicated using larger characters than other sec-
tions to improve the visibility.
Coarse and fine adjustments using the rotary knob are useful for setting values over
a wide range.
The easy-to-use memory function enables repetitive tests.
■ 0 V input type
A 0 V input operating voltage type is available.
This feature is a must for single cell tests of fuel cells. Moreover, the operating volt-
age of semiconductor devices is decreasing more and more due to the reduction of
the power consumption and miniaturization of the semiconductor process. The 0 V
input type can be used to evaluate the power supplies for these types of applications.
■Sequence function
Sequence patterns set arbitrarily can be saved to built-in memory.
Up to 10 normal sequence programs and 1 fast sequence program can be saved. Up
to 256 steps and 1024 steps can be saved for each normal sequence program and
fast sequence program, respectively.

PLZ-4W General Information 1-5
The sequence pattern can be edited easily using the large LCD.
■Useful function for battery discharge tests
The PLZ-4W can measure the time from load on to load off.
When combined with the under voltage protection (UVP) function, the time from
when the battery discharge is started until the battery voltage falls to the cutoff volt-
age can be measured (time measurement).
In voltage measurement, the voltage immediately before the load turns off is mea-
sured. If you set a timer to turn off the load after a specified time elapses, you can
measure the closed circuit voltage after a specified time elapses from the start of
battery discharge (voltage measurement).
■Load booster
To achieve large capacity at low cost, the PLZ1004W comes with a load booster
(PLZ2004WB).
Using a single PLZ1004W as a master unit, up to four load boosters can be con-
nected in parallel (9 kW, 1800 A maximum).
■Standard GPIB, RS232C, and USB communication functions
Because the electonic load comes standard with GPIB, RS232C, and USB commu-
nication functions, it can easily be incorporated into wide-ranging test and inspec-
tion systems.
Wide variety of systems can be configured when combined with the sequence func-
tion.

1-6 General Information PLZ-4W
1.5 Overview of Controls
This section describes the controls on the electronic load and combined systems.
Operation using the control panel
The PLZ-4W employs a large LCD. Measured values of voltage, current, and power
at the load input terminal are indicated at all times. The values are indicated using
larger characters than other sections to improve the visibility.
Coarse and fine adjustments using the rotary knob are useful for setting values over
a wide range.
Fig.1-1 Panel control
External communication interface
The PLZ-4W can be controlled from a PC.
GPIB, RS232C, and USB communication functions come standard.
Fig. 1-2 PLZ-4W and PC connection diagram
PROTECTI VE GROUNDI NG CONDUCTOR MUST
BE CONNECTED TO GROUND.
DO NOT REMOVE COVERS, RE FER
SERVICING TO QUALI FIED PERSONNEL.
TO AVOID ELECTR IC SHOCK, THE POWER CORD
WARNING
USB
OFSFSC
EXT CONT
SH1 AH1 T6 L4 SR1 RL1 PP0 DC1 DT0 C0 E1
J1
J2
RS232C GPIB
AC INPUT
100
-
240V
47
-
63Hz
80VA MAX
DC INPUT
165W
1. 5
-
150V
0
-
33A

PLZ-4W General Information 1-7
Support for large capacity
To achieve large capacity at low cost, the PLZ1004W comes with a load booster
(PLZ2004WB).
Using a single PLZ1004W as a master unit, up to four load boosters can be con-
nected in parallel (9 kW, 1800 A maximum).
In parallel operation without using load boosters, up to five electonic loads of the
same type including the master unit can be connected in parallel (5 kW, 1000 A
maximum).
Fig. 1-3 Parallel connection
Master
(
PLZ1004W
)
Master (PLZ1004W)
M
as
t
e
r
S
lave
Load booster (PLZ2004WB)
S
lave (PLZ1004W)
Up to four PLZ2004WBs
can be connected
Up to five PLZ-4Ws of the same type as
the master device can be connected
PLZ
-4
W
other than
PLZ
1004
W
PLZ1004W
Up to five PLZ1004Ws
can be connected

1-8 General Information PLZ-4W
1.6 Options
Control flat cables
Control cable used to connect between the master unit and the slave unit (load
booster) and between slave units. The following two types of cables are available.
The two types of cables only differ in their length. The 550-mm PC02-PLZ-4W is
required to connect the master unit and the load booster.
Analog remote contorol connector kit (OP01-PLZ-4W)
A kit for connecting to the J1/J2 connector.
Model Code Length Application
PC01-PLZ-4W 84540 300 mm Connect between the master unit and the slave
unit (load booster) and between slave units
PC02-PLZ-4W 84550 550 mm Connect between the master unit and load booster
Pins 20 pcs.
Socket 1 pc.
Protection cover 1 set

PLZ-4W General Information 1-9
Rack Mounting Option
The following rack mounting options are available.
For details, contact your Kikusui agent or distributor.
Unit: mm (inch)
Fig. 1-4 Rack mount frame
Unit: mm (inch)
Fig. 1-5 Rack mount bracket
Item Model Applicable Model Note
Rack mount frame
(Fig. 1-4)
KRA3 PLZ164W
PLZ334W
PLZ164WA
Inch rack
EIA standard
KRA150 Milli rack
JIS standard
Rack mount bracket
(Fig. 1-5)
KRB3-TOS
PLZ664WA
PLZ1004W
Inch rack
EIA standard
KRB150-TOS Milli rack
JIS standard
KRA3 KRA150
132.5 (5.22)
57 (2.24)
37.75 (1.49)
149
100
24.5
465 (18.31)
482 (18.98)
460
480
KRB3-TOS KRB150-TOS
149
100
24.5
460
479
132 (5.20)
57
(2.24)
37.5
(1.48)
465 (18.31)
479 (18.86)

1-10 General Information PLZ-4W