Matsusada Precision RK Series User manual

Instruction Manual
MODEL RK/REK/REKJseries
B/N 167.9.102 *167.9.102*Rev. 2.0

Note
All rights reserved.

No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form, or by any means, mechanical, electronic, photocopying,
recording, or otherwise, without the prior written permission of Matsusada Precision.

No patent liability is assumed with respect to the use of the information contained
herein. Moreover, because Matsusada Precision is constantly striving to improve its
high-quality products, the information contained in this manual is subject to change
without notice. Every precaution has been taken in the preparation of this manual.
Nevertheless, Matsusada Precision assumes no responsibility for errors or omissions.
Neither is any liability assumed for damages resulting from the use of the information
contained in this publication.
Trademarks
Company names and product names in this document are the trademarks or registered
trademarks of their respective companies.
Warranty
For details, refer to the following website.
https://www.matsusada.com/support/manufacturer_warranty.html

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RK/REK/REKJ series
For Safe Use of the Product
◆Introduction
The product generates high-voltage and high-energy.
Therefore, wrongly handling or operating the product may result in death or serious injury and maybe
property damage as well. In order to use the product safely, read the instruction manual thoroughly before
use to understand how to use and operate it properly.
Please note that we will not be held responsible for any damage or loss caused by not following the
warnings, cautions, and procedures described in the manual.
Keep the manual with you so that you can read it whenever you want.
◆Symbols
Symbols are used in the manual and product, which indicate precautions to be observed for safe use.
Understand these symbols first and then read the manual thoroughly.
Some symbols below are not used in products.
Indicates a potentially hazardous situation, which, if not avoided, may
result in serious injury or death.
Indicates a potentially hazardous situation, which, if not avoided, may
result in minor or moderate injury or in property damage.
Indicates danger/warning/caution. Refer to
the instruction manual when this symbol
appears on the unit.
Frame or chassis terminal
Indicates the possible danger of electric
shock under specific conditions, which
may result in serious injury or death.
Ground terminal
High Temperature Caution:
Indicates the possible danger of injury by
high temperature under specific
conditions.
Power ON
Indicates general prohibitions, including
warnings.
Power OFF
Indicates what must be followed.
Standby
Protective earth terminal (ground terminal
for preventing electric shock)
Bistable push button switch
ON
Indicates the possible danger of death if
you drink it and burns or blindness if it
attaches.
Bistable push button switch
OFF
Indicates the possible danger of exposure
to radiation.
Alternative Current

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RK/REK/REKJ series
Understand the risks.
The Product generates high-voltage and high-energy.
The product is designed for electrical engineers or the equivalents who install, wire, and operate it.
Read the instruction manual thoroughly before use and familiarize yourself with the proper use and
danger of the product.
Make sure to allow only specific people to handle the product.
Make sure to allow only the following people to handle the product:
1. who are electrical engineers or the equivalents and have already familiarized themselves with the
proper use and danger of the product, or
2. who are electrical engineers or the equivalents and have already been trained by the
above-mentioned people, or
3. who work under the supervision of the above-mentioned people.
If people other than those listed above install, wire, or operate the product, it may cause electric
shock, burnout, or injury.
Do not open or remove the case or panel of the product.
Do not disassemble, repair, or modify the product by yourself. High-voltage is applied to the inside of it.
Otherwise, it may cause electric shock, fire, or malfunction.
Moreover, if you do it, the safety and functions are not covered with the warranty.
The product does not suit to install and use in places where children may be present.
The product is designed to be installed in places such as factories or laboratories. Do not install and use it
where children may be present.
Make sure to ground it.
When the product has a protection ground terminal or GND terminal, make sure to ground it.
When the AC line input of it is an inlet type, connect the attached power cable or a power cable suitable for
your area to an outlet with the ground. Otherwise, it may result in electric shock or fire.
Regarding power cable
When a power cable is enclosed or attached to the product, do not use it for other products.
When no power cable is enclosed with the product, prepare the power cable suitable for the usage
environment and area by yourself.
Regarding the connection of power cable
Electrical engineers or the equivalents who have already been familiarized with the proper use and danger
of the product should connect the power cable to the AC input by referring to the instruction manual.
Regarding products that have acquired the safety standard, check the page describing the over-voltage
categories too.
Do not process or damage power cables
It may result in electric shock or fire.
Regarding the input voltage
Check the page describing the input terminals and input voltage in the instruction manual.
Do not provide any voltage out of the specifications.

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RK/REK/REKJ series
Regarding the fuse
The product builds in a protective fuse. In the case where a fuse holder is arranged outside of the product,
you can replace it by yourself. Refer to the instruction manual to replace it.
In the case where a fuse holder is not arranged outside of the product, you cannot replace it by yourself.
In this case, do not open the case or panel of the product and contact us.
The product is designed for indoor use.
Use the product indoors only, not outdoors. Even indoors, do not use it if there is a possibility of water
leakage, flooding, or snow covering.
Regarding operating temperature and humidity
Use the product within the range of the specifications describing in the instruction manual.
Do not use it in a place where the ambient temperature exceeds the specified range or a closed place.
Do not install the product in places where condensation may occur.
Otherwise, insulation deteriorates and it may cause electric shock, fire, or malfunction.
Do not place anything on top of the product.
Otherwise, they may fall or tumble from it.
Do not put anything into the product.
Do not put foreign objects such as metal or liquid into the product through the air inlets, air outlets, or other
openings. Otherwise, it may result in electric shock, fire, or malfunction.
Operate the product with the right hand.
Use only your right hand to operate the product and keep your left hand away from it, which can reduce
the risk of electric current flowing through the left hand to the vital organs of the body in the event of an
electric shock.
Do not touch the wiring/load connected to the output and any terminals/connectors during the operation or
just after turning output off.
Very high-voltage is on the terminals and connectors during the operation and even just after the output is
turned off. Touching them may result in serious injury or death by electric shock.
The terminals here mean all terminals like input and output terminals and terminals for communications
and remote controls.
Turn off the product before touching the wiring/load connected to the product and any
terminals/connectors on the product and cut it off from the AC input.
Before touching the terminals/connectors and wiring/load, turn off the product and unplug the AC input
cable from the outlet or turn off the AC input breaker. Then, check there is no voltage remained using a
tester.
Since the output and sense terminals are connected to condensers in it, there is high-voltage remained on
them even just after it is turned off.
In order to avoid electric shock, ground the terminals to discharge using a short-circuit grounding
apparatus and check the voltage again.
The terminals here mean all terminals like input and output terminals and terminals for communications
and remote controls.

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RK/REK/REKJ series
Level the product out to use for good heat dissipation.
Do not install the product upside down or sideways. If not, the inner heat dissipation will be insufficient.
It may result in smoke or fire due to components deterioration.
Do not install the product in a place where cold air directly blows to it.
It may result in electric leakage or burnout due to condensation.
Do not install the product in a place where it is exposed to corrosive gases or liquids.
It may result in smoke or burnout due to components deterioration.
Do not store or use the product in a place where conductive dust, such as iron powder, can enter through
the air inlet/outlet.
Doing so may cause a short circuit, resulting in electric leakage, burnout, fire, or malfunction.
Do not install the product in a dusty place.
Accumulating dust in the air inlet will make hard to cool it down it, it may result in malfunction.
In that case, remove dust immediately.
Do not block the air inlet and outlet.
Secure 30 cm space at least around the openings.
If they are blocked, the product cannot show the rated performance due to the internal temperature
increase. Moreover, components deteriorate and it may result in smoke or fire.
Remove wiring to and from the product when work like welding near it is done.
Do not wipe the equipment with a dust cloth wet with chemicals (thinner or the like) or water.
Otherwise, it may result in an electric shock, electric leakage, or burnout due to water getting inside.
Regarding fan replacement
When products equip a fan, it has a lifetime. It will be worn out and deteriorated with the time passed and
its operation may become unstable. Also, its lifetime greatly varies depending on the usage environment
such as temperature, humidity, dust. It requires to be replaced at regular intervals to extend the lifetime.
For the replacement, contact us.
(It requires a replacement charge separately. Do not replace it by yourself, as there is a risk of electric
shock.)

Table of Contents
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RK/REK/REKJ series
Table of Contents
Page
For Safe Use of the Product .............................................................................................................................ⅰ
Table of Contents ............................................................................................................................................. v
1 Features and Specifications..............................................................................................................................1
1-1 Greetings................................................................................................................................................ 1
1-2 Overview................................................................................................................................................. 1
1-3 Features ................................................................................................................................................. 2
1-4 Operation Mode...................................................................................................................................... 2
2 Before Using This Product................................................................................................................................3
2-1 General................................................................................................................................................... 3
2-2 Initial Inspection...................................................................................................................................... 3
2-3 Precautions on Handling........................................................................................................................ 3
2-4 Installation .............................................................................................................................................. 4
2-4-1 Installation Conditions.....................................................................................................................4
2-4-2 Ventilation .......................................................................................................................................4
2-4-3 Fan Replacement............................................................................................................................ 5
2-4-4 Bias.................................................................................................................................................5
3 Specifications....................................................................................................................................................6
3-1 Output Specifications ............................................................................................................................. 6
3-2 Input Specifications.............................................................................................................................. 10
3-3 Operating Conditions............................................................................................................................ 11
3-4 External Appearance............................................................................................................................ 12
3-4-1 Front Panel....................................................................................................................................12
3-4-2 RK series: Rear panel (Common interface)..................................................................................14
3-4-3 REK series: Rear panel (Common interface)............................................................................... 16
3-4-4 REKJ series: Rear panel (Common interface)............................................................................. 17
3-4-5 Rear Panel (-LGob option)............................................................................................................18
3-4-6 Rear Panel (-LUs1 option)............................................................................................................19
3-4-7 Rear Panel (-LEt option)...............................................................................................................20
3-4-8 Rear Panel (-LMi option)...............................................................................................................21
3-5 Dimensions........................................................................................................................................... 22
3-5-1 RK 400W series............................................................................................................................22
3-5-2 RK 800W series............................................................................................................................23
3-5-3 RK 1200W series..........................................................................................................................25
3-5-4 REK 1.6kW/2.5kW series .............................................................................................................26
3-5-5 REK 3.6kW/5.5kW series .............................................................................................................27
3-5-6 REK 8kW/10kW/15kW series.......................................................................................................29
3-5-7 REKJ series ..................................................................................................................................31
4 Connecting Unit...............................................................................................................................................33
4-1 About AC Input Cable........................................................................................................................... 33
4-2 Connecting AC Input cable .................................................................................................................. 33
4-2-1 Connection for Single-phase Input...............................................................................................34
4-2-2 Connection for three-phase Input.................................................................................................34

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Page
4-3 Connecting the Load............................................................................................................................ 35
4-3-1 Connection....................................................................................................................................35
4-3-2 Grounding Output Terminals ........................................................................................................38
4-3-3 Connecting Sensing Wires ...........................................................................................................38
4-3-4 When Connecting a Load with Electrical Discharge.....................................................................39
4-3-5 Connecting to a capacitive Load having Energy (with NSC Switch)............................................40
4-4 Remote Control Connector (TB1) ........................................................................................................ 41
4-4-1 Installing Remote Control Connector Cover.................................................................................41
4-4-2 TB1(Remote Control Connector) Pin Assignment........................................................................42
4-5 SW1 (Function Setting Switch) ............................................................................................................ 43
5 Starting Output................................................................................................................................................44
6 Basic Operation............................................................................................................................................... 45
6-1 Operation Modes.................................................................................................................................. 45
6-1-1 Constant Voltage Mode................................................................................................................45
6-1-2 Constant Current Mode.................................................................................................................45
6-1-3 Crossover Mode............................................................................................................................45
6-2 Output ON/OFF switch......................................................................................................................... 46
6-3 Output Voltage/Current Preset [SET] Switch....................................................................................... 47
6-3-1 FINE switch................................................................................................................................... 48
6-4 OVP(Overvoltage Protection)/ OCP(Overcurrent Protection).............................................................. 49
6-5 LOCK.................................................................................................................................................... 50
6-6 Power Failure Protection...................................................................................................................... 51
6-7 OTP (Overtemperature protection)...................................................................................................... 51
6-8 Remote Sensing................................................................................................................................... 52
6-9 LD (Interlock Switch)............................................................................................................................ 55
6-10 ACF (AC Input Voltage Abnormality) ................................................................................................. 57
6-11 Error List............................................................................................................................................. 57
7 Useful Functions..............................................................................................................................................58
7-1 Series Operation / Parallel Operation.................................................................................................. 58
7-1-1 Series Operation...........................................................................................................................58
7-1-2 Parallel Operation.........................................................................................................................58
7-2 Divided Operation................................................................................................................................. 59
7-3 Master/Slave Function.......................................................................................................................... 60
7-3-1 Overview.......................................................................................................................................60
7-3-2 Master/Slave Connection.............................................................................................................. 61
7-3-3 Master/Slave Setting.....................................................................................................................62
7-4 Multi-set Function................................................................................................................................. 63
7-5 Start Menu............................................................................................................................................ 65
7-5-1 Setting the Start menu..................................................................................................................66
7-6 Menu Modes......................................................................................................................................... 69
7-7 Start Menu List ..................................................................................................................................... 82
7-8 Trigger Delay Function......................................................................................................................... 85
7-8-1 Setting Trigger Delay....................................................................................................................85
7-8-2 Stopping Trigger Delay in Case of an Emergency.......................................................................85
7-8-3 Trigger Delay on Master/Slave Units............................................................................................86

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Page
8 Analog Control Operation............................................................................................................................... 89
8-1 LS (Remote Switch) ON/OFF............................................................................................................... 89
8-2 Local Programming Mode Operation................................................................................................... 91
8-3 Local Mode / Remote Mode (Setting Voltage/Current/OVP/OCP)...................................................... 91
8-4 Overvoltage Protection (OVP) Setting................................................................................................. 94
8-4-1 OVP Setting on the Front Panel................................................................................................... 94
8-4-2 OVP Program Setting with External Voltage ............................................................................... 94
8-5 Overcurrent Protection (OCP) Setting ................................................................................................. 95
8-5-1 OCP Setting on the Front Panel .................................................................................................. 95
8-5-2 OCP Program Setting with External Voltage............................................................................... 95
8-6 Remote Programming.......................................................................................................................... 96
8-6-1 Setting the Voltage Program with External Voltage..................................................................... 96
8-6-2 Setting the Voltage Program with External Resistance............................................................... 96
8-6-3 Setting the Current Program with External Voltage..................................................................... 97
8-6-4 Setting the Current Program with External Resistance............................................................... 97
8-7 Remote Programming Function by Fail-Safe Mode............................................................................. 98
8-7-1 Setting the Voltage Program with External Resistance............................................................... 98
8-7-2 Setting the Current Program with External Resistance............................................................... 98
8-8 Monitor/Status Output .......................................................................................................................... 99
8-8-1 Monitor Output.............................................................................................................................. 99
8-8-2 Status Output ............................................................................................................................... 99
9 Digital Control Operation.......................................................................................................................... 101
9-1 Overview............................................................................................................................................. 101
9-1-1 Notes on Digital Connection....................................................................................................... 101
9-2 Digital Connection Diagram ............................................................................................................... 102
9-2-1 RK/REK/REKJ series (Standard Digital Interface), CO-MET2-9,CO-MET2-25, CO-MET4-25 102
9-2-2 RK/REK/REKJ series (Standard Digital Interface), CO-G32m.................................................. 103
9-2-3 RK/REK/REKJ series (-LGob option), CO-OPT2-9/CO-OPT2-25/CO-OPT4-25...................... 104
9-2-4 RK/REK/REKJ series (-LGob option), CO-G32......................................................................... 105
9-2-5 RK/REK/REKJ series (-LGob option), USB-OPT...................................................................... 106
9-2-6 RK/REK/REKJ series (-LUs1 option)......................................................................................... 107
9-2-7 RK/REK/REKJ series (Standard Digital Interface), CO-U32m.................................................. 108
9-2-8 RK/REK/REKJ Series (Standard Digital Interface), CO-E32m.................................................. 109
9-2-9 RK/REK/REKJ series (-LEt option)............................................................................................ 110
9-2-10 RK/REK/REKJ series (-LGob option), CO-E32 ....................................................................... 111
9-3 CO-M cable connector interface terminal details (Standard digital interface)................................... 112
9-4 Setting UNIT Number......................................................................................................................... 113
9-5 Setting Address and Delimiter for GPIB (with CO-G32/CO-G32m) .................................................. 114
9-6 USB Setting (USB-OPT/CO-U32m/-LUs1 Option) ............................................................................ 114
9-7 LAN Setting (CO-E32/CO-E32m/-LEt Option)................................................................................... 115
9-8 Setting UNIT Number and Connected Device (-LGob Option).......................................................... 115
9-9 Setting CO-MET2-25/CO-MET2-9 (Standard Digital Interface)......................................................... 117
9-10 Setting CO-OPT2-25/CO-OPT2-9 (-LGob Option).......................................................................... 118
9-11 Setting CO-MET4-25/CO-OPT4-25................................................................................................. 119

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Page
9-12 Digital Program (Standard and -LGob/-LUs1/-LEt option)............................................................... 120
9-12-1 Summary of syntax .................................................................................................................. 120
9-12-2 Multiple Command................................................................................................................... 121
9-12-3 Character set for command...................................................................................................... 121
9-12-4 Returned Data.......................................................................................................................... 122
9-13 Checking Digital Operation (Standard Digital Interface or -LGob/-LUs1/-LEt option)..................... 123
9-13-1 CO-MET2-25/CO-MET2-9/CO-MET4-25 (Standard Digital Interface).................................... 123
9-13-2 Standard Digital Interface, CO-G32m...................................................................................... 124
9-13-3 Standard Digital Interface, CO-U32m...................................................................................... 125
9-13-4 Standard Digital Interface, CO-E32m ...................................................................................... 126
9-13-5 CO-OPT2-25/CO-OPT2-9/CO-OPT4-25, -LGob option.......................................................... 127
9-13-6 CO-G32, -LGob Option............................................................................................................ 128
9-13-7 USB-OPT, -LGob Option.......................................................................................................... 129
9-13-8 CO-E32, -LGob Option............................................................................................................. 130
9-13-9 -LUs1 Option............................................................................................................................ 131
9-13-10 -LEt Option............................................................................................................................. 132
9-14 Command......................................................................................................................................... 133
9-14-1 Command list ........................................................................................................................... 133
9-14-2 Command list (-LDe Option).................................................................................................... 134
9-14-3 Reference................................................................................................................................. 136
9-14-4 Command reference (-LDe option).......................................................................................... 147
9-15 Listing of Minimum Setting / Return Value.................................................................................. 171
10 -LDe Option................................................................................................................................................. 172
10-1 Overview........................................................................................................................................... 172
10-2 Features of Pulse Sequence Function............................................................................................. 172
10-3 Examples of using Pulse Sequence Function ................................................................................. 173
10-3-1 Using with Infinite Number Times............................................................................................ 173
10-3-2 Using with Specified Number Times........................................................................................ 174
10-3-3 Using with Multiple Setting Mode............................................................................................. 175
10-4 Features of Ramp Function.............................................................................................................. 177
10-5 Using with Ramp Function............................................................................................................... 178
10-5-1 Using with Basic Ramp Function............................................................................................. 178
10-5-2 Using Together with Pulse Sequence Function....................................................................... 179
10-5-3 Using with Both Multiple Setting and Pulse Sequence............................................................ 180
10-6 Features of Sweep Program............................................................................................................ 182
10-7 Operation Check of Sweep Program............................................................................................... 183
10-8 Features of Master following Function............................................................................................. 184
10-9 Quick settings in -LDe Option .......................................................................................................... 185
10-9-1 Pulse Sequence Operation Settings........................................................................................ 185
10-9-2 Ramp Operation Settings......................................................................................................... 186

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Page
11 -LEt Option.................................................................................................................................................. 187
11-1 Overview........................................................................................................................................... 187
11-2 LAN Connector................................................................................................................................. 187
11-3 Network Parameters......................................................................................................................... 187
11-4 Notes on Network Settings............................................................................................................... 187
11-4-1 Web Manager........................................................................................................................... 188
11-5 Connection Example of -LEt Option in RK/REK/REKJ Series......................................................... 189
11-6 Network Address Settings................................................................................................................ 190
11-7 VB Sample Program by LAN............................................................................................................ 195
11-8 VC Sample Program by LAN ........................................................................................................... 197
12 Troubleshooting.......................................................................................................................................... 199

1 Features and Specifications
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RK/REK/REKJ series
1 Features and Specifications
1-1 Greetings
Thank you for purchasing RK/REK/REKJ series product.
Matsusada Precision takes every precaution to ensure the quality of our products. Please follow the
instructions in the manual to ensure full performance and safe use of the product.
We have made every effort to provide all the necessary information in this manual. However, if you notice
any errors or omissions, please contact us.
1-2 Overview
This product generates a wide range of variable and continuous output voltage and current with high
stability, which is required for various applications such as test for components (LCD, semiconductors,
etc.) or for system power supplies.
With high frequent switching technology, the product enables high power and low noise output in such a
compact body.
Furthermore, the -LDe option adds output options including the pulse sequence programming function
that repeats on and off and the lamp/sweep*1 function that arbitrarily sets rising/falling time, allowing to
change the output state according to their own environment.
*1: As for models with -LDe option and -LCk option or -LMi option, the sweep function is not available.
t: time
Memory a (10V)
Memory b (20V)
Memory c (30V)
-LDe option operation as image

1 Features and Specifications
2
RK/REK/REKJ series
1-3 Features
・Digital displays for both voltage and current
・With setting dial, voltage and current can be set from 0 to rated output.
・Constant voltage mode and constant current mode changes with automatic crossover.
・High frequent switching technology realized compact and light weight.
・Power failure protection circuit is integrated. (factory setting is Power failure protection enable)
・Output terminals are both on front panel and rear panel. (REK/REKJ has no front monitor terminal )
・Lockable function (to keep the set value)
・With PFC with power factory 0.99 (typical)
・Worldwide input: Normal supply voltage 100V to 240V, REK 2.5kW or higher, 200V to 240V
・Output cut off with external signal
・Remote control of output voltage/current
・External output of status signal: CV/CC, FLT, OUTPUT.
・Output monitor of output voltage/current.
・Output Delay function (0.0 to 99.9 seconds)
・Voltage/Current Memory function (enabling three types of the voltage/current presettings apart from the
standard presetting)
1-4 Operation Mode
The product has two basic operation modes of constant voltage and constant current.
In the constant voltage mode, the unit maintains the set output voltage even if load is changed.
In the constant current mode, the unit maintains the set output current even if load is changed.
The unit will perform in either of the two modes, and they cannot be available together.
(See [6-1-3 Crossover Mode].)

2 Before Using This Product
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RK/REK/REKJ series
2 Before Using This Product
2-1 General
After unpacking the product and checking the power supply, make sure the following accessories are all
included. If the accessories are different, missing, or broken, please contact us.
[Accessories]
□
Basic Instruction Manual
1
□
Remote control connector cover
1
□
D-Sub 25Pin mail connector
1
*REK series in 1.6kW/2.5kW/3.6kW/5.5kW already attached.
□
AC input cable (for RK/REKJ series)
1
□
CO-M cable (When any option is installed, it is not supplied.)
1
*However, when no function setting switch is installed, it is supplied even with any
option.
□
Output terminal cover (REK J800-1)
1
□
Optical fiber cable (-LGob option)
1
□
Connector for RS-485 (-LMi option)
1
2-2 Initial Inspection
Before operating the product, thoroughly check the unit for abnormalities.
Check the front panel, rear panel, top, and the chassis if any dent or damage can be seen on the product
after transportation and delivery. If an abnormality is found, contact both Matsusada Precision and the
carriers.
2-3 Precautions on Handling
In high voltage power supply system, faults caused by high voltage might be
generated.
Although the unit has protections against instantaneous short circuits, avoid any
operation where there are repetitive short circuits that lead to discharge.
Before changing the system, first turn off power all the devices that
make up the system.

2 Before Using This Product
4
RK/REK/REKJ series
2-4 Installation
The product is designed to be built into a customer's system as well as to meet the requirements for CE
marking under conditions of mounting in a chassis, noise suppression, appropriate protections and,
isolation devices. Therefore, this product is not intended to be used alone.
2-4-1 Installation Conditions
Never place objects on top of the power supply unit.
Avoid using the unit in locations that are subject to dust and corrosive gas.
Do not install the power supply in locations that are prone to condensation.
Do not allow liquids or metals to get inside the power supply via ventilation holes or other
openings. Doing so could lead to breakdown, electric shock, or fire.
Do not store or use the product in a place where conductive dust, such as iron powder,
can enter through the air inlet/outlet.
Doing so may cause a short circuit, resulting in electric leakage, burnout, fire, or
malfunction.
The product is designed to be installed in a 19-inch rack. Use guides to support the
chassis when mounting the power supply.
Avoid supporting the unit only by the installation holes on the front panel.
The handle on the front panel is used to change the direction the power supply is facing
and to pull the unit out of rack in which it is mounted. Avoid placing the full weight on the
handle.
Install and use the unit in a horizontal orientation.
Be sure to maintain a space of at least 30 cm at the front and rear of the power supply unit,
and do not block the intake/exhaust ports.
Ensure that the external cabinet also has intake and exhaust ports that are at least the
same size as the openings on the power supply.
Do not install the power supply in a sealed cabinet or similar enclosure, and provide
ventilation to ensure that exhaust heat from the exhaust port does not return through the
intake port.
Do not take impact to protrusions on front panel or rear panel when moving the product.
Particularly, never take impact to the encoder because it could cause degrading
component life significantly.
If welding or similar work will be performed near the power supply, first disconnect all
connection wires from the power supply.
Do not install the power supply in a sealed cabinet or similar enclosure, and provide
ventilation to ensure that exhaust heat from the exhaust port does not return through the
intake port by taking measures such as forced air-cooling.
2-4-2 Ventilation
The front and rear of the power supply unit are equipped with air intake and exhaust ports for
cooling.
Provide enough space around these ports to ensure sufficient air circulation, and please use the
product in a well-ventilated area with enough space around the product.
Promptly remove any dust that accumulates in the intake port.
If dust accumulates in the intake port, it will interfere with the cooling of the unit and lead
to breakdown.

2 Before Using This Product
5
RK/REK/REKJ series
2-4-3 Fan Replacement
The fan in this power supply has a limited service life. As it becomes worn and deteriorates
with use, its operation might become unstable. Note that the service life of the fan will vary
greatly depending on the usage environment (temperature, humidity and dust). In order to
use this power supply for a long time, it is necessary to replace the fan at regular intervals.
Please contact Matsusada Precision for assistance in replacing the fan.
(A separate repair fee is required to replace the fan. Do not replace the fan by yourself as it
may cause electric shock.)
2-4-4 Bias
The maximum voltage for use with the output floating (biased) with reference to the ground is
250Vdc.
Be careful with caution as there is bias voltage on the output terminal.

3 Specifications
6
RK/REK/REKJ series
3 Specifications
3-1 Output Specifications
RK 400W series line up: RK 800W series line up:
Model
Output
voltage [V]
Output current
[A]
Output power
[W]
Model
Output
voltage [V]
Output current
[A]
Output power
[W]
RK6-65
0 to 6
0 to 65
390
RK6-130
0 to 6
0 to 130
780
RK10-40
0 to 10
0 to 40
400
RK10-80
0 to 10
0 to 80
800
RK15-26
0 to 15
0 to 26
390
RK15-54
0 to 15
0 to 54
810
RK20-20
0 to 20
0 to 20
400
RK20-40
0 to 20
0 to 40
800
RK30-13
0 to 30
0 to 13
390
RK30-27
0 to 30
0 to 27
810
RK36-11
0 to 36
0 to 11
396
RK36-22
0 to 36
0 to 22
792
RK45-9
0 to 45
0 to 9
405
RK45-18
0 to 45
0 to 18
810
RK60-6.6
0 to 60
0 to 6.6
396
RK60-13.5
0 to 60
0 to 13.5
810
RK80-5
0 to 80
0 to 5
400
RK80-10
0 to 80
0 to 10
800
RK120-3.3
0 to 120
0 to 3.3
396
RK120-6.6
0 to 120
0 to 6.6
792
RK160-2.5
0 to 160
0 to 2.5
400
RK160-5
0 to 160
0 to 5
800
RK250-1.6
0 to 250
0 to 1.6
400
RK250-3.2
0 to 250
0 to 3.2
800
RK350-1.1
0 to 350
0 to 1.1
385
RK350-1.5
0 to 350
0 to 1.5
525
RK500-0.8
0 to 500
0 to 0.8
400
RK350-2.2
0 to 350
0 to 2.2
770
RK650-0.6
0 to 650
0 to 0.6
390
RK400-2
0 to 400
0 to 2
800
RK500-0.9
0 to 500
0 to 0.9
450
RK500 to
1.6
0 to 500
0 to 1.6
800
RK650-0.8
0 to 650
0 to 0.8
520
RK650-1.2
0 to 650
0 to 1.2
780
RK 1200W series line up: REKJ series line up
Model
Output
voltage [V]
Output current
[A]
Output power
[W]
Model
Output
voltage [V]
Output current
[A]
Output power
[W]
RK6-180
0 to 6
0 to 180
1080
REKJ6-130
0 to 6
0 to 130
780
RK10-120
0 to 10
0 to 120
1200
REKJ10-80
0 to 10
0 to 80
800
RK15-80
0 to 15
0 to 80
1200
REKJ15-54
0 to 15
0 to 54
810
RK20-60
0 to 20
0 to 60
1200
REKJ20-40
0 to 20
0 to 40
800
RK30-40
0 to 30
0 to 40
1200
REKJ30-27
0 to 30
0 to 27
810
RK36-33
0 to 36
0 to 33
1188
REKJ36-22
0 to 36
0 to 22
790
RK45-27
0 to 45
0 to 27
1215
REKJ45-18
0 to 45
0 to 18
810
RK60-20
0 to 60
0 to 20
1200
REKJ60-13.5
0 to 60
0 to 13.5
810
RK80-15
0 to 80
0 to 15
1200
REKJ80-10
0 to 80
0 to 10
800
RK120-10
0 to 120
0 to 10
1200
REKJ120-6.6
0 to 120
0 to 6.6
792
RK160-7.5
0 to 160
0 to 7.5
1200
REKJ160-5
0 to 160
0 to 5
800
RK250-4.8
0 to 250
0 to 4.8
1200
REKJ250-3.2
0 to 250
0 to 3.2
800
RK350-3.2
0 to 350
0 to 3.2
1120
REKJ350-2.2
0 to 350
0 to 2.2
770
RK500-2.4
0 to 500
0 to 2.4
1200
REKJ500-1.6
0 to 500
0 to 1.6
800
RK650-1.8
0 to 650
0 to 1.8
1170
REKJ650-1.2
0 to 650
0 to 1.2
780
RK800-1
0 to 800
0 to 1
800
REKJ800-1
0 to 800
0 to 1
800
The voltage, current, and power shown in the table are output to the output
terminals of this product.
Never touch the output terminals or sense terminals during operation or immediately
after stopping.

3 Specifications
7
RK/REK/REKJ series
REK 1.6kW series line up: REK 2.5kW series line up:
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
REK6-200
0 to 6
0 to 200
1.2
REK6-310
0 to 6
0 to 310
1.9
REK6-220
0 to 6
0 to 220
1.3
REK8-300
0 to 8
0 to 300
2.4
REK8-180
0 to 8
0 to 180
1.44
REK10-200
0 to 10
0 to 200
2
REK10-150
0 to 10
0 to 150
1.5
REK10-240
0 to 10
0 to 240
2.4
REK15-100
0 to 15
0 to 100
1.5
REK15-160
0 to 15
0 to 160
2.4
REK20-80
0 to 20
0 to 80
1.6
REK20-125
0 to 20
0 to 125
2.5
REK30-53
0 to 30
0 to 53
1.6
REK30-84
0 to 30
0 to 84
2.5
REK35-45
0 to 35
0 to 45
1.6
REK35-50
0 to 35
0 to 50
1.75
REK40-40
0 to 40
0 to 40
1.6
REK35-72
0 to 35
0 to 72
2.5
REK45-35
0 to 45
0 to 35
1.6
REK40-60
0 to 40
0 to 60
2.4
REK60-26
0 to 60
0 to 26
1.6
REK45-55
0 to 45
0 to 55
2.5
REK80-20
0 to 80
0 to 20
1.6
REK60-30
0 to 60
0 to 30
1.8
REK100-16
0 to 100
0 to 16
1.6
REK60-42
0 to 60
0 to 42
2.5
REK120-13
0 to 120
0 to 13
1.56
REK70-30
0 to 70
0 to 30
2.1
REK150-10
0 to 150
0 to 10
1.5
REK80-31
0 to 80
0 to 31
2.5
REK200-8
0 to 200
0 to 8
1.6
REK90-20
0 to 90
0 to 20
1.8
REK300-5.3
0 to 300
0 to 5.3
1.6
REK100-25
0 to 100
0 to 25
2.5
REK500-3.2
0 to 500
0 to 3.2
1.6
REK110-20
0 to 110
0 to 20
2.2
REK600-2.7
0 to 600
0 to 2.7
1.62
REK150-16.6
0 to 150
0 to 16.6
2.5
REK650-2.5
0 to 650
0 to 2.5
1.63
REK200-12.5
0 to 200
0 to 12.5
2.5
REK300-8.3
0 to 300
0 to 8.3
2.5
REK400-5
0 to 400
0 to 5
2
REK500-5
0 to 500
0 to 5
2.5
REK600-4.1
0 to 600
0 to 4.1
2.5
REK650-3.8
0 to 650
0 to 3.8
2.5
The voltage, current, and power shown in the table are output to the output terminals
of this product.
Never touch the output terminals or sense terminals during operation or immediately
after stopping.

3 Specifications
8
RK/REK/REKJ series
REK 3.6kW series line up: REK 5.5kW series line up:
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
REK6-530
0 to 6
0 to 530
3.2
REK8-600
0 to 8
0 to 600
4.8
REK10-340
0 to 10
0 to 340
3.4
REK10-510
0 to 10
0 to 351
5.1
REK15-227
0 to 15
0 to 227
3.4
REK15-340
0 to 15
0 to 340
5.1
REK20-170
0 to 20
0 to 170
3.4
REK16-320
0 to 16
0 to 320
5.12
REK30-115
0 to 30
0 to 115
3.5
REK18-290
0 to 18
0 to 290
5.22
REK35-100
0 to 35
0 to 100
3.5
REK20-200
0 to 20
0 to 200
4
REK40-75
0 to 40
0 to 75
3
REK20-260
0 to 20
0 to 260
5.2
REK40-85
0 to 40
0 to 85
3.4
REK25-200
0 to 25
0 to 200
5
REK45-78
0 to 45
0 to 78
3.5
REK30-180
0 to 30
0 to 180
5.4
REK60-60
0 to 60
0 to 60
3.6
REK35-155
0 to 35
0 to 155
5.4
REK75-36
0 to 75
0 to 36
2.7
REK45-120
0 to 45
0 to 120
5.4
REK80-45
0 to 80
0 to 45
3.6
REK54-100
0 to 54
0 to 100
5.4
REK100-36
0 to 100
0 to 36
3.6
REK60-90
0 to 60
0 to 90
5.4
REK120-25
0 to 120
0 to 25
3
REK80-68
0 to 80
0 to 68
5.4
REK130-25
0 to 130
0 to 25
3.25
REK100-55
0 to 100
0 to 55
5.5
REK150-24
0 to 150
0 to 24
3.6
REK150-36
0 to 150
0 to 36
5.4
REK200-18
0 to 200
0 to 18
3.6
REK200-27
0 to 200
0 to 27
5.4
REK300-12
0 to 300
0 to 12
3.6
REK250-22
0 to 250
0 to 22
5.5
REK500-6
0 to 500
0 to 6
3
REK300-18
0 to 300
0 to 18
5.4
REK500-7
0 to 500
0 to 7
3.5
REK500-11
0 to 500
0 to 11
5.5
REK600-6
0 to 600
0 to 6
3.6
REK600-9
0 to 600
0 to 9
5.4
REK650-5.5
0 to 650
0 to 5.5
3.6
REK650-8.5
0 to 650
0 to 8.5
5.5
REK 8kW series line up: REK 10kW series line up:
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
Model
Output
voltage [V]
Output current
[A]
Output power
[kW]
REK8-1000
0 to 8
0 to 1000
8
REK10-1000
0 to 10
0 to 1000
10
REK20-420
0 to 20
0 to 420
8.4
REK20-500
0 to 20
0 to 500
10
REK30-240
0 to 30
0 to 240
7.2
REK30-333
0 to 30
0 to 333
10
REK40-210
0 to 40
0 to 210
8.4
REK40-250
0 to 40
0 to 250
10
REK60-140
0 to 60
0 to 140
8.4
REK60-170
0 to 60
0 to 170
10.2
REK80-110
0 to 80
0 to 110
8.8
REK80-130
0 to 80
0 to 130
10.4
REK100-85
0 to 100
0 to 85
8.5
REK100-100
0 to 100
0 to 100
10
REK125-65
0 to 125
0 to 65
8.1
REK125-80
0 to 125
0 to 80
10
REK150-55
0 to 150
0 to 55
8.3
REK150-70
0 to 150
0 to 70
10.5
REK200-42
0 to 200
0 to 42
8.4
REK200-52
0 to 200
0 to 52
10.4
REK250-34
0 to 250
0 to 34
8.5
REK250-42
0 to 250
0 to 42
10.5
REK270-25
0 to 270
0 to 25
6.75
REK300-35
0 to 300
0 to 35
10.5
REK300-28
0 to 300
0 to 28
8.4
REK400-26
0 to 400
0 to 26
10.4
REK400-22
0 to 400
0 to 22
8.8
REK500-20
0 to 500
0 to 20
10
REK500-17
0 to 500
0 to 17
8.5
REK600-18
0 to 600
0 to 18
10.8
REK600-14
0 to 600
0 to 14
8.4
REK650-16
0 to 650
0 to 16
10.4
REK650-13
0 to 650
0 to 13
8.5
REK850-12
0 to 850
0 to 12
10.2
REK850-10
0 to 850
0 to 10
8.5
The voltage, current, and power shown in the table are output to the output terminals
of this product.
Never touch the output terminals or sense terminals during operation or immediately
after stopping.