Kikusui PLZ-5W SR Series User manual

Setup Guide
Large-Capacity DC Electronic Load
Smart Rack System
PLZ6005W SR
PLZ10005W SR
PLZ15005W SR
PLZ20005W SR
PLZ-5W SR Series
Product Overview 3
Checking the Package Contents 3
Component Names 5
Preparation 7
Connecting the Power Cord 7
Checking Whether the Power Is On or Off 8
Operating the Load Input Terminal Cover 10
Connecting the EUT 13
Connecting the Load Cables 13
Connecting the Sensing Cables 16
Other Connections 18
Connection for Synchronized Operation 18
Connecting the External Control Device 20
Connecting the Remote Control Device 21
PART NO. Z1-006-580, I0035001
Apr 2021

This manual provides an overview of the product and notes on
usage. It also explains how to configure it, operate it, perform
maintenance on it, and so on. Read this manual thoroughly
before use, and use the product properly.
Who should read this manual?
These manuals are intended for users of this product and their
instructors. Explanations are given under the presumption that
the reader has knowledge of power supplies.
Manual construction
•PLZ-5W Series User’s Manual
This manual provides an overview of the PLZ1205W master
unit and notes on usage. It also explains how to configure it,
operate it, perform maintenance on it, and so on.
After reading the Setup Guide and the PLZ-5W SR is ready
for use, read this manual to use the available features effec-
tively.
• Specifications
This document contains the specifications of the PLZ-5W
SR series.
• Communication Interface Manual (partially in PDF)
This manual explains how to control the product remotely
using SCPI commands. The interface manual is written for
readers with sufficient basic knowledge of how to control
measuring instruments using a PC.
The command list is provided in PDF format.
• PLZ-5W Series Quick Reference
The quick reference briefly explains the control panel and
the basic operation of it.
•Setup Guide (this guide)
This guide is intended for users who are using the PLZ-5W
SR series for the first time. It covers topics related to setting
up the product such as preparing the product, connecting
the EUT, and connecting various connectors.
• Booster PLZ2405WB Operation Manual
This manual explains the PLZ2405WB.
• Safety Information
This document contains general safety precautions. Keep
them in mind and make sure to observe them.
PDF and HTML files are included in the accompanying CD-
ROM.
You can view the PDF files using Adobe Reader. Microsoft
Internet Explorer is required to view the HTML files.
Firmware versions that this manual covers
This manual applies to products with firmware versions 1.0X.
For information on how to check the firmware version, see
“Displaying the Device Information” the PLZ-5W series user’s
manual.
When contacting us about the product, please provide us with
the following information.
• Model (marked in the bottom section of the front panel)
• Firmware version
• Serial number (marked on the top of the load input terminal
cover)
About this Manual
PDFPDF
PDFPDF
HTMLHTML
PaperPaper
PDFPDF
PaperPaper
PDFPDF
PDFPDF
PaperPaper
PDFPDF
KIKUSUI ELECTRONICS CORP.
www.kikusui.co.jp/en
1-1-3 Higashiyamata, Tsuzuki-ku, Yokohama,
224-0023, Japan
Phone: [phone]
Facsimile: [phone]

PLZ-5W SR Series Setup Guide 3
The PLZ-5W SR is a large current capacity model with a
PLZ1205W DC Electronic Load and PLZ2405WB Electronic
Load Boosters mounted on a dedicated rack.
You can control the product externally using external analog
signals and control it remotely using RS232C, USB, and LAN
communication features.
When you receive the product, check that all accessories are
included and that the accessories have not been damaged
during transportation.
If the main unit or any of the accessories are damaged or
missing, contact your Kikusui agent or distributor.
We recommend that you save all packing materials, in case
the product needs to be transported at a later date.
• In this manual, large-capacity DC electronic loads
PLZ6005W SR, PLZ10005W SR, PLZ15005W SR,
PLZ20005W SR are referred to as the PLZ-5W SR.
• In this manual, electronic load PLZ1205W is sometimes
referred to as PLZ-5W.
• The screen captures and illustrations used in this manual
may differ from the actual items.
• The term “PC” is used to refer generally to both personal
computers and workstations.
• The following markings are used in the explanations in this
manual.
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 or other
property.
Indicates information that you should know.
Load the included CD-ROM into the CD-ROM drive. After a
moment, an AutoPlay window appears. click Run rundll32.exe
to display the start window. You can also open the CD-ROM
folder in Windows Explorer and then double-click index.html to
display the start window.
The CD-ROM contains the following items.
• PLZ-5W SR Series Setup Guide (PDF)
• PLZ-5W SR Series Specifications (PDF)
• PLZ-5W Series User’s Manual (PDF)
• PLZ-5W Series Quick Reference (PDF)
• PLZ-5W Series Communication Interface Manual
(HTML, PDF)
• PLZ2405WB Operation Manual (PDF)
Product Overview
Checking the Package Contents
Load input terminal
screw set (8 sets)
Heavy object warning label (1 pc.)
If necessary, attach to the product.
PLZ6005W SR: [A8-900-157]
PLZ10005W SR: [A8-900-158]
PLZ15005W SR: [A8-900-158]
PLZ20005W SR: [A8-900-158]
Setup Guide
(this manual, 1 copy)
CD-ROM (1 disk) Safety Information (1 pc.)
PLZ-5W Series
Quick Reference
(Japanese (1 sheet),
English (1 sheet))
[M1-100-131]
M12 × 80
[M5-101-009]
[M5-100-009]
[M4-100-009]
External control
connector kit (1 set)
[83-20-0190]
Plug: NEMA5-15
Rating: 125 Vac/10 A
[85-AA-0003]
Plug: CEE7/7
Rating: 250Vac/10A
[85-10-1070]
Plug: GB1002
Rating: 250Vac/10A
[85-10-0791]
or or
Power cord (1 pc., approx. 2.5 m)
The attached power cord varies depending on the shipment destination.
Notations Used in This Manual
WARNING
CAUTION
Contents of the Included CD-ROM

4PLZ-5W SR Series Setup Guide
When using this product, be sure to observe the “Safety
Precautions” in the Safety information manual. The fol-
lowing precautions pertain only to this product.
• The rear panel may become hot during operation. If you
touch it, you may burn yourself.
• Do not use the product where ventilation is poor. Heat is
expelled from vents of the rear panel. To prevent the heat
from building up and causing a fire, keep the vents at least
60 cm away from walls. Also, do not place objects within
60 cm of the rear panel.
When installing this product, be sure to observe the “Pre-
cautions Concerning Installation Location” in the Safety
information manual. The following precautions pertain
only to this product.
• When installing this product, be sure to observe the tem-
perature and humidity ranges indicated below.
Operating temperature range: 0 °C to 40 °C (32 °F to 104 °F)
Operating humidity range: 20 %rh to 85 %rh (n o condensa-
tion)
• When storing this product, be sure to observe the tempera-
ture and humidity ranges indicated below.
Storage temperature range: -20 °C to 70 °C (-4 °F to 158 °F)
Storage humidity range: 90 %rh or less (no condensation)
Fixing the product in place
This product has casters on its bottom side, so it is easy to
move the product. To ensure that the product is not moved
accidentally while it is being operated, lock the casters, and fix
the product in place by lowering the stoppers to the floor.
When moving this product, be sure to observe the “Pre-
cautions to Be Taken When Moving the Product” in the
Safety information manual. The following precautions
pertain only to this product.
• If the stopper bolt has been used to fix the product in place,
release the stopper. Moving the product without releasing
the stopper may cause injuries due to the product falling
over.
• When you are moving the product from one location to
another, if you must leave it unattended, be sure to use the
caster locks or the stopper bolt to ensure that the product
stays in place.
• If you are using a forklift to move the product, be sure to
slide the forks under the bottom of the product, check that
the product is stable, and then raise the product. If you are
using a crane to move the product, be sure to slide the band
under the bottom of the product, check that the product is
stable, and then raise the product.
• Do not use the handles to lift the product. The handles are
for moving the product on its casters. The handles are not
strong enough to support the weight of the product.
• Do not tip the product on its side or turn it upside down.
Safety Precautions
Precautions Concerning
Installation Location
Lock
Release
Caster lock
Caster lock
Stopper bolt’s bottom nut (M12)
• Turn the nut clockwise to lower the stopper (lock).
• Turn the nut counterclockwise to raise the stopper (unlock).
• Turn the nut clockwise to
fix the stopper position in
place.
Stopper bolt’s top nut (M12)
Precautions to Be Taken
When Moving the Product

PLZ-5W SR Series Setup Guide 5
Front panel (example of PLZ15005W SR)
No. Name Description See
1 Master unit (PLZ1205W) Connected in parallel with boosters. –
2
Booster (PLZ2405WB) Connected in parallel with a master unit and boosters.
PLZ6005W SR: 2 units, PLZ10005W SR: 4 units, PLZ15005W SR: 6 units,
PLZ20005W SR: 8 units
–
3Front-panel load input
terminal cover
Not used. Do not remove the cover. –
4 Display Displays the settings, measured values, and other information. –
5 Handle Handle for moving the product on its casters. –
6POWER switch Press the side to switch the power on, and the side to switch the power off. p.8
7 Model Indicates the model. –
8 Casters Four locations on the bottom side. –
9 Caster locks Lock casters. p.4
10 Stopper bolt For fixing bottom panel. p.4
Component Names
1
34
5
6
7
8
9
2
10

6PLZ-5W SR Series Setup Guide
Rear panel (example of PLZ15005W SR)
No. Name Description See
1Load input terminal
cover
Open this cover when connecting various cables. After making the connections, be
sure to close the cover.
p.10
2 Serial number PLZ-5W SR serial number. Indicated on the top side of the load input terminal cover. –
3 EXT SYNC connector Connector for synchronized operation. p.18
4 EXT CONT connector External control connector. p.20
5
DC OUT 5V connector Used with the optional GPIB converter (PIA5100). For details, see the GPIB con-
verter manual contained in the included CD-ROM.
PIA5100
Operation
Manual
6DC INPUT terminal
(load input terminal)
Used to connect the EUT and the PLZ-5W SR. p.13
7
USB port
LAN port
RS232C port
Remote control connector. For details on remote control, see the Communication
Interface Manual on the included CD-ROM.
p.21 ,
Interface
Manual
8 SENSING connector Remote sensing connector. p.16
9 AC INPUT connector Power inlet. p.7
Component Names (continued)
1
2
345 6
7
9
8

PLZ-5W SR Series Setup Guide 7
1Preparation
This chapter describes how to connect the power cord and how to turn the power on and off.
Connecting the Power Cord
This product conforms to IEC Overvoltage Category II (energy-consuming equipment that is
supplied from a fixed installation).
1Turn the POWER switch off ( ).
2Check that the AC power line meets the nominal input rating of the prod-
uct.
The product can receive a nominal line voltage in the range of 100 Vac to 240 Vac at
50 Hz or 60 Hz (frequency range: 47 Hz to 63 Hz).
3Connect the power cord to the AC INPUT inlet on the rear panel.
WARNING
Risk of electric shock.
• This product conforms to IEC Safety Class I (equipment that has a protective con-
ductor terminal). Be sure to earth ground the product to prevent electric shock.
• The product is grounded through the power cord ground wire. Connect the protec-
tive conductor terminal to earth ground.
• Use the included power cord to connect to the AC line.
If the supplied power cord cannot be used because the rated voltage or the plug shape is
incompatible, have a qualified engineer replace it with an appropriate power cord that is
3 m or less in length. If obtaining a power cord is difficult, contact your Kikusui agent or dis-
tributor.
• Do not use the supplied power cord with other instruments.
• The power cord with a plug can be used to disconnect the product from the AC power line
in an emergency. Connect the plug to an easily accessible power outlet so that the plug can
be removed from the outlet at any time.
• Secure adequate space around the power cord plug. Do not insert the power cord plug into
an outlet that is difficult to access or place objects around the power cord plug that will
make plugging and unplugging difficult.

8PLZ-5W SR Series Setup Guide
1.Preparation Checking Whether the Power Is On or Off
4Connect the power cord plug to a properly grounded outlet.
Checking Whether the Power Is On or Off
Turning the power on
1Check that the power cord is connected correctly.
2Check that nothing is connected to the load input terminals (DC INPUT).
3Turn the POWER switch on ( ).
After the startup screen, the load value input screen appears.
If you notice strange sounds, unusual odors, fire, or smoke around or from inside the PLZ-5W
SR, turn off the power switch ( ), or turn off the switchboard breaker.
By factory default, the panel settings immediately before the POWER switch is turned off are
saved. If you turn the power on, the PLZ-5W SR starts in the same state as it was in the last
time that it was turned off. (However, the load setting is always Load Off.)
The panel setting state at startup can be changed. For details, see the PLZ-5W Series User’s
Manual.
To a grounded outlet
POWER switch

PLZ-5W SR Series Setup Guide 9
1.Preparation Checking Whether the Power Is On or Off
When the product does not start properly
If the product does not start when the power is turned on, follow the appropriate remedy
shown below. If following the remedy does not solve your problem, contact your Kikusui
agent or distributor.
Turning the power off
Press the ( ) side of the POWER switch to turn the power off.
Condition Remedy
Nothing is shown on the
display.
Check that the power cord is not broken and that the connection at the AC
INPUT terminal is secure.
An alarm is occurring. See “Alarm types and operation” and “Clearing an alarm” in the PLZ-5W
Series User’s Manual, eliminate the root cause of the alarm, and then clear
the alarm.
CAUTION
If you want to turn the POWER switch back on, wait at least 5 seconds after the fan stops.
Repeatedly turning the POWER switch on and off at short intervals can cause damage to the
inrush current limiter. Furthermore, this will shorten the service life of the POWER switch,
fuse, and other components.

10 PLZ-5W SR Series Setup Guide
Operating the Load Input Terminal Cover
When you open the load input terminal cover, you can connect cables to the terminals and
cables on the rear panel. After making the connections, be sure to close the cover. Adjusting
the position of the lock plate provided with the load input terminal cover makes the opening
narrower for safer use.
Opening the load input terminal cover
1Turn the POWER switch off ( ).
2Loosen the screws holding the load input terminal cover on the rear
panel.
3Open the load input terminal cover.
Screw
Load input terminal cover

PLZ-5W SR Series Setup Guide 11
1.Preparation Operating the Load Input Terminal Cover
Closing the load input terminal cover
1Close the load input terminal cover.
2Tighten the screws holding the load input terminal cover on the rear
panel.
Fasten the covers correctly to prevent them from moving.
Screw
Load input terminal cover

12 PLZ-5W SR Series Setup Guide
1.Preparation Operating the Load Input Terminal Cover
Adjusting the lock plate
You can adjust the opening according to the load cables and other various cables in use.
Factory default condition
Lock plates (5 pcs.)
Screw (M3)
Remove
Move the lock plate to adjust the position.
Example: When four flexible conductors and sensing cables are used
Removed lock plates can be stored
by attaching them to the side of the
load input terminal cover.

PLZ-5W SR Series Setup Guide 13
2Connecting the EUT
This chapter describes how to connect the EUT to the PLZ-5W SR.
Connecting the Load Cables
Using load cables, connect the EUT to the product through the load input terminals on the
rear panel.
The load input terminals on the front panel are for using a standalone PLZ1205W in a simple
manner. Do not use these terminals as this product uses parallel operation.
Selecting the load cables
Select load cables that are suitable for the current to be used. You can use the optional large-
current load cables. For details on large-current load cables, see the large-current load cable
manual in the included CD-ROM.
WARNING
• Risk of fire. Use load cables whose capacity is adequate for the product’s rated input
current.
• Risk of electric shock. Use load cables with a voltage rating that meets or exceeds
the product’s isolation voltage (±500 Vdc).
CAUTION
• Use load cables with a core diameter that is appropriate for the amount of current being
used and with sturdy, flame-resistant insulation.

14 PLZ-5W SR Series Setup Guide
2.Connecting the EUT Connecting the Load Cables
Current capacity of load cables
If the load cable resistance is large, a large voltage drop may occur when current flows
through the cables. This may result in the load input terminal voltage being lower than the
minimum operating voltage of this product. Refer to the table below, run multiple cables in
parallel to provide adequate wiring for the current.
A cable’s temperature is determined by the resistive loss based on the current, the ambient
temperature, and the cable’s external thermal resistance. The following table shows the cur-
rent capacity of heat-resistant vinyl cables that have a maximum allowable temperature of
60 °C when one of the cables is separated and stretched out horizontally in air in an ambient
temperature of 30 °C. The current must be reduced under certain conditions, such as when
vinyl cables that have a low heat resistance are used, when the ambient temperature is 30 °C
or greater, or when cables are bundled together and little heat is radiated.
Taking measures against noise
When connecting cables that have the same heat resistance, separating the cables as much
as possible to increase heat radiation enables a greater amount of current to flow. However,
running the + (positive) and - (negative) output load cables side by side or bundling them
together is more effective against unwanted noise. The Kikusui-recommended currents
shown in "Current capacity of load cables" (p.14) are allowable currents that have been
reduced in consideration of the potential bundling of load cables. Use these values as a
guideline when connecting cables.
Limitations of the remote sensing function
All wires have resistance. As the wire becomes longer or the current becomes larger, the volt-
age drop in the wire becomes greater. This results in a smaller voltage being applied at the
load input terminal. The PLZ-5W SR has a sensing function (p.16) that compensates for this
voltage drop, which is the total potential difference between the load input terminals and
sensing terminals, by up to approximately 7 V. If the voltage drop exceeds this level, use
wires that have a greater cross-sectional area.
Nominal cross-sec-
tional area
[mm2]
AWG (reference cross-
sectional area; mm2)
Allowable current1
[A](Ta = 30 °C)
1. Excerpt from Japanese laws related to electrical equipment.
Kikusui-recom-
mended current
[A]
80 3/0 (85.01) 257 200
100 4/0 (107.2) 298 -
125 - - 344 -
150 - - 395 300
200 - - 469 400
250 - - 556 -
325 - - 650 600
400 - - 745 -
500 - - 842 -
600 - - 930 -
800 - - 1 080 -
1 000 - - 1 260 -

PLZ-5W SR Series Setup Guide 15
2.Connecting the EUT Connecting the Load Cables
Connecting the load cables
Using load cables, connect the EUT to the product through the load input terminals on the
rear panel.
1Open the load input terminal cover (p.10).
2Attach crimping terminals to the load cables.
Attach crimping terminals that are appropriate for the bolts (M12) that are to be used.
3Connect the load cables to the load input terminals.
Use the supplied bolts, nuts, washers, and spring washers to secure the cables or
wires in place.
Tightening torque: 33.06 N·m
To connect sensing cables, see "Connecting the Sensing Cables" (p.16) .
4Adjust the positions of the lock plates for the load input terminal cover
(p.12).
5Close the load input terminal cover (p.11).
WARNING
Risk of electric shock.
• Do not touch load input terminals when the output is turned on.
• The load input terminals on the front panel are connected internally to the load input
terminals on the rear panel. The voltage applied to the terminal on one side is trans-
mitted directly to the terminal on the other side.
Risk of burns.
• Load input terminals may become hot. Before you touch the load input terminals,
turn the POWER switch off, and allow a sufficient amount of time for the terminals to
cool off.
CAUTION
Risk of damage.
• Do not connect the EUT to the load input terminals while the product’s load is turned on.
• Do not use the load input terminals on the front panel.
Risk of overheating.
• Attach crimping terminals to the cables, and use the supplied screws to connect the cables.
Load input terminal
Nut
Bolt (M12)
Spring
washer
Load cables
(When using the optional large current
load cable DC600-2P3M-M12M12)
Washer

16 PLZ-5W SR Series Setup Guide
Connecting the Sensing Cables
Using the remote sensing function makes it possible to change a voltage measurement point
from a load input terminal to an arbitrary sensing point. By setting sensing points at the EUT
end, influences such as voltage drops caused by the resistance of the load cables can be
reduced, and the load current can be stabilized.
To use remote sensing, connect the sensing cables to the sensing terminals of the PLZ-5W
SR and the EUT end, and enable the remote sensing function.
Unlike the load cables, there is no need to consider the current capacity for the sensing
cables. However, for adequate mechanical strength, use wires whose nominal cross-sec-
tional area is 0.5 mm2 or greater.
1Open the load input terminal cover (p.10).
2Connect the sensing cables.
Remove the two short bars from the sensing terminals, and then connect the cables.
Short bars must be connected to the sensing terminals when remote sensing is not in
use. Store the short bars in a safe place.
3Adjust the positions of the lock plates for the load input terminal cover
(p.12).
4Close the load input terminal cover (p.11).
CAUTION
• Risk of damage to the internal circuitry. Do not wire the sensing terminals while the
POWER switch is turned on.
• If the remote sensing cables come loose while remote sensing is in use, the PLZ-5W SR
and EUT may be damaged. Be sure to connect the cables securely.
• If you are not using remote sensing, remove the sensing cables, and be sure to attach the
two short bars to the sensing terminals.
Sensing cables: Use cables whose cross sectional area is at least 0.5 mm2
and twist them together.
Connect the sensing cables.
Screw (M4)
Short bars
Run the cables through.Run the cables through.

PLZ-5W SR Series Setup Guide 17
2.Connecting the EUT Connecting the Sensing Cables
5Connect the sensing cables to the EUT.
Connect the cables as shown in the figure.
Connect the cables as close to the EUT as possible.
For details on enabling the remote sensing function, see the PLZ-5W user's manual.
EUT PLZ-5W SR
+S
–S
Sensing terminal
++
––
Red
White
Twist

18 PLZ-5W SR Series Setup Guide
3Other Connections
This chapter explains how to connect the PLZ-5W SR to other devices when performing syn-
chronized operation, external control, and remote control.
Connection for Synchronized Operation
You can use the synchronization feature simply by connecting several PLZ-5W SRs or PLZ-
5W series with LAN cables. For details on the synchronization feature, see the PLZ-5W
Series User’s Manual.
You can connect a mixture of various PLZ-5W SR and PLZ-5W series models (for example,
PLZ15005W SR and PLZ1205W). Typical LAN cables (straight) up to 30 m long can be used.
To use LAN cables more than 30 m long, please contact your Kikusui agent or distributor.
1Turn the POWER switches of all the PLZ-5W SRs and PLZ-5W series
units that you will connect.
2Open the load input terminal cover (p.10).
3Connect a LAN cable to the OUT connector of EXT SYNC.
4Adjust the positions of the lock plates for the load input terminal cover
(p.12).
5Close the load input terminal cover (p.11).
6Connect a LAN cable to the IN connector of EXT SYNC on another
device that you want to synchronize with.
For details on connecting to the PLZ-5W series, see the PLZ-5W Series User’s Manual.
For your safety, be sure to attach the SYNC/PARALLEL terminal cover.
WARNING
Risk of electric shock.
• Do not touch the IN/OUT connectors of EXT SYNC while the power is turned ON.
• Do not leave one end of the LAN cable unconnected while the other end is con-
nected to the EXT SYNC connector.
Run the cables
through.

PLZ-5W SR Series Setup Guide 19
3.Other Connections Connection for Synchronized Operation
7Connect all PLZ-5W SR and PLZ-5W series units with LAN cables.
Connection example (when connecting the PLZ15005W SR, PLZ205W, PLZ1205W)
This completes the connections.
EXT SYNC OUT
EXT SYNC IN
LAN cable
EXT SYNC IN

20 PLZ-5W SR Series Setup Guide
Connecting the External Control Device
By connecting the rear-panel EXT CONT connector, front-panel BNC connectors (I MON
OUT connector, TRIG OUT connector) to an external device with signal cables, you can con-
trol and monitor the PLZ-5W SR from the external device (external control).
The BNC connectors are isolated from the chassis and load input terminals.
For details on external control and how to use it, see the PLZ-5W Series User’s Manual.
External control connector kit
To connect the signal cable to the EXT CONT connector, use the included external control
connector kit. For information about how to use this kit, see the TE Connectivity (formerly
AMP) catalog. For information about how to obtain these tools or replacement parts, contact
your Kikusui agent or distributor.
Connecting to the EXT CONT connector
1Open the load input terminal cover (p.10).
2Connect the signal cable to the EXT CONT connector.
3Adjust the positions of the lock plates for the load input terminal cover
(p.12).
4Close the load input terminal cover (p.11).
5Connect the signal cable to the external controller.
This completes the external control connection procedure.
Connector model
(on the PLZ-5W SR)
5747461-3 [made by TE Connectivity]
Plug model 745211-7 [made by TE Connectivity]
Wire diameter AWG26 to AWG22
Manual pressure welding
tool
Handle assembly 58074-1 [made by TE Connectivity]
Head assembly 58063-2 [made by TE Connectivity]
Insertion/extraction tool 91232-1 [made by TE Connectivity] or equivalent
Run the signal
cable through.