Matsusada Precision DOSF Series User manual

Instruction manual
F-RA-001-2R3
Model DOSF series
B/N: 103.9.222 *103.9.222*Rev.1.0

Trademarks
◆Company names and product names in this document are the trademarks or registered
trademarks of their respective companies.
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 Inc. 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 Inc. 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.
Warranty
◆For details, refer to the following website.
https://www.matsusada.com/support/manufacturer_warranty.html

For Safe Use of the Product
i
DOSF 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: Voltage is being
applied to the inside of the
product.
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

For Safe Use of the Product
ii
DOSF 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.

For Safe Use of the Product
iii
DOSF 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.

For Safe Use of the Product
iv
DOSF 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 power, 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
vi
DOSF series
Table of Contents
Page
For Safety Use of the Product .................................................................................................................................... i
Table of Contents ....................................................................................................................................................... v
1 Introduction··································································································································· 1
1-1 Introduction ····························································································································· 1
1-2 Unpacking······························································································································· 1
1-3 Transportation·························································································································· 1
1-4 Installation Conditions················································································································ 2
1-5 Precautions on Handling ············································································································ 2
1-6 Before Considering it as a Malfunction ·························································································· 3
1-7 Response Speed······················································································································ 3
2 External View ································································································································ 5
2-1 Models ··································································································································· 5
2-2 External View··························································································································· 6
2-2-1 External View A (Height: 133mm)··························································································· 6
2-2-2 External View B (Height: 177mm)··························································································· 7
2-2-3 External View A (w/Communication Option)·············································································· 8
2-2-4 External View B (w/Communication Option)·············································································· 8
2-2-5 External View C (Height: 233mm)··························································································· 9
2-2-6 External View D (Hight: 233mm)····························································································10
2-3 External Dimensions ················································································································11
2-3-1 External Dimensions A········································································································11
2-3-2 External Dimensions B········································································································12
2-3-3 External Dimensions C········································································································13
2-3-4 External Dimensions D········································································································14
3 Operation ····································································································································15
3-1 Overview ·······························································································································15
3-2 Connecting the Load ················································································································15
3-3 Connecting AC Input Power Cable ······························································································16
3-4 Remote sensing (Only for DC operation)·······················································································16
3-5 Other functions························································································································17
3-6 Overcurrent Protection··············································································································17
3-7 Output Range ·························································································································17
3-8 Operation·······························································································································18
3-8-1 Basic Operation·················································································································19
3-8-2 Setting Sequence Operation·································································································37
4 Options ·······································································································································79
4-1 Remote Switch Function (-LS)····································································································79
4-2 Interlock Function (-LD)·············································································································80
4-3 Master/Slave Opetion (-LMs)······································································································81
4-4 Floating ground (-LF)················································································································81
5 -LMs Option ·································································································································83
5-1 Connecting Master and Slave Units ·····························································································83
5-2 Operation Procedures···············································································································84
5-3 Usage Notes···························································································································84
5-4 Settings·································································································································85
5-5 Monitor··································································································································86
6 Troubleshooting····························································································································87

1 Introduction
1 1 DOSF series
1 Introduction
1-1 Introduction
Thank you very much for purchasing our DOSF series, Ultra-High-Speed Bipolar Power Supply.
We have taken all possible measures to ensure the quality control of our products. Please follow the
instructions in this manual to ensure full performance and safe use of the product.。
We have applied our best to prepare this instruction manual, but if you find any unclear points, errors, and
missing contents, please contact us.
1-2 Unpacking
After unpacking the box, check that the following accessories are supplied with the product.
If the accessories are different, missing, or broken, please contact us immediately.
<Accessories>
□
AC input cable
1 pc
□
Instruction manual
1 ㍶
□
Instruction manual for option
1 ㍶
(with option)
□
CO-OPT cable
1 pc
(for -LGob option)
Check the front panel, rear panel, and chassis for scratches, dents, or other signs of shock from
transportation or handling.
If you find any abnormalities, please contact the carrier and us.
1-3 Transportation
When carrying the unit, hold the bottom of the front panel side and the bottom of the rear side, and carry it
with two or more people.
When placing it, be careful not to get your fingers caught in the bottom of it.
or

1 Introduction
2 2 DOSF series
1-4 Installation Conditions
When installing the unit, observe the following items.
Set the unit on a level place to use.
Do not place anything on top of the unit.
Do not expose the unit for overly aggressive environments such as salt mist, corrosive or explosive
gases, steam, or dust.
Do not install the unit in a place where condensation may occur.
Prevent liquids or metals from entering the unit through the air inlet and outlet.
It may result in malfunction, electric shock, or fire.
The unit is designed for a 19-inch rack. Support the chassis with the guide rails of a rack when
installing the unit.
Never support the unit only with the mounting holes on the front panel.
The handles on the front panel are used to change the direction of the unit or pull out the unit
mounted in a rack. Avoid any application that the entire weight of the unit is applied to the handles
on the front panel.
Secure a space at least 30 cm and more around the unit not to block air inlet and outlet.
Secure air inlet and outlet on the external cabinet as the same size as the air inlet and outlet of the
unit.
When installing the unit in a closed cabinet, mount forced exhaust to prevent exhaust heat from
returning to the air inlet.
If dust collects in the air inlet, remove it immediately.
it prevents the unit from cooling.
When doing something such as welding near the unit, detach all connections between the unit and
the load.
This unit falls under "Equipment Utilizing High Frequency Current".
The DOSF series falls under the category of "Equipment Utilizing High Frequency Current" that requires
permission for use from the Minister of Internal Affairs and Communications in accordance with the provision of
Article 100 of the Radio Law.
(Required when using output power exceeding 50 W at 10kHz.)
For details of the application for permission, please contact your Regional Bureau of Telecommunications.
1-5 Precautions on Handling
When touching the load after the output is turned off.
1. Set the output voltage to "0V".
2. Turn the [POWER ON/OFF] switch off.
3. Ground the output for at least 10 seconds or more and measure the output voltage with another
voltmeter to confirm that it indicates zero.
It is especially DANGEROUS if the load is capacitive or the cable to the load is long.
4. Make sure to touch the load with your right hand.
Grounding
1．For safety, groundthe GND on the input terminal. D classgrounding (100 ohms or below) or
more.
2．Make the grounding wire shorter and thicker if a short circuit or electric discharge of the load is
expected.
3．Improper grounding may cause electric shock or damage to the unit.
AC input terminal

1 Introduction
3 3 DOSF series
Using the unit more safely
1. We recommend that the floor on which a person operating the product stands be covered with an
insulating plate that can withstand the voltage to be used.
2. When touching or operating the unit or load, use the right hand only and keep the left hand in a
pocket to avoid touching other objects.
3. When touching the output terminals or the load immediately after the output is turned off or even a
long time has passed, make sure that there is no voltage remaining there with a voltmeter. If any
voltage remains, ground the output to discharge it and then check again with a voltmeter to avoid
electric shock.
1-6 Before Considering it as a Malfunction
1. Check whether or not the input voltage is within the specifications.
Input voltage: 100 to 120Vac or 200 to 240Vac±10％, single phase, 50/60Hz
2. Check whether or not the input/output and signal lines are correctly wired.
1-7 Response Speed
If an accurate output waveform is required, select a bipolar power supply unit with a frequency band that
is sufficiently wider than the operating frequency.
Generally, using a sine wave requires three to five times wider frequency band and using a square
wave 10 times or wider frequency band. If the frequency band is narrow, the input/output phase
difference will become wider as well as the output amplitude will decrease.
In this case, operate the unit while monitoring the output waveform.
Attenuation of output amplitude with frequency
Frequency ratio to fc →
Output amplitude
[Vpp]
100%
DC
0dB
3dB
f [Hz]
70%
92%
20

2 External View
5 DOSF series
2 External View
2-1 Models
Correspondence table for the model and external view
Model
Output
power
[W]
Weight
[kg]
External view and dimensions
External view *1
Output terminals
No.
External
view
description
External
dimensions
page
Height
H [mm]
Depth
D [mm]
DOSF20-7.5
150
11
A
p.6, 8
p.11
133
482
Terminal block
DOSF20-15
300
17
A
p. 6, 8
p.11
133
550
Terminal block
DOSF20-30
600
23
B
p.7, 8
p.12
177
610
Terminal block
DOSF20-60
1200
40
C
p.9
p.13
233
610
Terminal block
DOSF20-100
2000
47
D
p.10
p.14
233
610
Bus bar
DOSF25-6
150
11
A
p.6, 8
p.11
133
482
Terminal block
DOSF25-12
300
17
A
p.6, 8
p.11
133
550
Terminal block
DOSF25-24
600
23
B
p.7, 8
p.12
177
610
Terminal block
DOSF25-48
1200
40
C
p.9
p.13
233
610
Terminal block
DOSF25-80
2000
47
D
p.10
p.14
233
610
Bus bar
DOSF45-3.3
150
12
A
p.6, 8
p.11
133
482
Terminal block
DOSF45-6.6
300
17
A
p.6, 8
p.11
133
550
Terminal block
DOSF45-13.3
600
23
B
p.7, 8
p.12
177
610
Terminal block
DOSF45-16
720
23
B
p.7, 8
p.12
177
610
Terminal block
DOSF45-26.7
1200
40
C
p.9
p.13
266
610
Terminal block
DOSF45-44.4
2000
47
C
p.9
p.13
266
610
Terminal block
DOSF60-2.5
150
12
A
p.6, 8
p.11
133
482
Terminal block
DOSF60-5
300
17
A
p.6, 8
p.11
133
550
Terminal block
DOSF60-10
600
23
B
p.7, 8
p.12
177
610
Terminal block
DOSF60-20
1200
40
C
p.9
p.13
266
610
Terminal block
DOSF60-33.3
2000
47
C
p.9
p.13
266
610
Terminal block
※The width (W) is 483 [mm] for all models.

2 External View
6 DOSF series
2-2 External View
2-2-1 External View A (Height: 133mm)
Model: DOSF20-7.5、20-15、25-6、25-12、60-2.5、60-5
(1)
POWER ON/OFF switch
(14)
Freq/Duty selector switch
(2)
VOLT/CURR setting encoder
(15)
Freq//Duty setting encoder
(3)
VOLT/CURR selector switch
(16)
Ext. control signal (Vcon) LED
(4)
OUTPUT LED
(17)
Ext. control signal (Vcon) switch
(5)
OUTPUT ON/OFF switch
(18)
Ext. control signal (Vcon) terminal
(6)
LCD display
(19)
Master/Slave connector (option)
(7)
Memory switch
(20)
Output terminal
(8)
OVP setting switch
(21)
Voltage monitor terminal
(9)
LOCK LED
(22)
Current monitor terminal
(10)
LOCK switch
(23)
AC input terminal
(11)
WAVE switch
(24)
Remote switch (option)
(12)
CV/CC switch
(25)
Interlock (option)
(13)
DISP switch
（１） （２） （３） (4) (5) (6) (9) (10) (8) (7) (11) (12) (13) (14) (15) (16) (17) (18)
REMOTE
ON/OFF
INTERLOCK
(25) (24)
(20) (19) (21) (22) (23)
[Front panel]
[Rear panel]

2 External View
7 DOSF series
2-2-2 External View B (Height: 177mm)
Model: DOSF20-30、25-24、45-13.3、45-16、60-10
(1)
POWER ON/OFF switch
(14)
Freq/Duty selector switch
(2)
VOLT/CURR setting encoder
(15)
Freq//Duty setting encoder
(3)
VOLT/CURR selector switch
(16)
Ext. control signal (Vcon) LED
(4)
OUTPUT LED
(17)
Ext. control signal (Vcon) switch
(5)
OUTPUT ON/OFF switch
(18)
Ext. control signal (Vcon) terminal
(6)
LCD display
(19)
Master/Slave connector (option)
(7)
Memory switch
(20)
Output terminal
(8)
OVP setting switch
(21)
Voltage monitor terminal
(9)
LOCK LED
(22)
Current monitor terminal
(10)
LOCK switch
(23)
AC input terminal
(11)
WAVE switch
(24)
Remote switch (option)
⑫
CV/CC switch
(25)
Interlock (option)
⑬
DISP switch
(1) (2) (3) (4) (5) (6) (9) (10) (8) (7) (11) (12) (13) (14) (15) (16) (17) (18)
INTERLOCK
REMOTE
ON/OFF
(25) (24)
(20) (19) (21) (22) (23)
[Front panel]
[Rear panel]

2 External View
8 DOSF series
2-2-3 External View A (w/Communication Option)
Model: DOSF20-7.5、20-15、25-6、25-12、60-2.5、60-5
2-2-4 External View B (w/Communication Option)
Model: DOSF20-30、25-24、45-13.3、45-16、60-10
(1)
Master/Slave connector (option)
(5)
AC input terminal
(2)
Output terminal
(6)
Remote switch (option)
(3)
Voltage monitor terminal
(7)
Interlock (option)
(4)
Current monitor terminal
(8)
Communication connector (option)
(8) (7) (6)
(2) (1) (3) (4) (5)
(8) (7) (6)
(2) (1) (3) (4) (5)
[Rear panel]
[Rear panel]

2 External View
9 DOSF series
2-2-5 External View C (Height: 233mm)
Model: DOSF20-60、25-48、45-26.7、45-44.4、60-20、60-33.3
(1)
POWER ON/OFF switch
(10)
LOCK switch
(19)
Master/Slave connector (option)
(2)
VOLT/CURR setting encoder
(11)
WAVE switch
(20)
Output terminal
(3)
VOLT/CURR selector switch
(12)
CV/CC switch
(21)
Voltage monitor terminal
(4)
OUTPUT LED
(13)
DISP switch
(22)
Current monitor terminal
(5)
OUTPUT ON/OFF switch
(14)
Freq/Duty selector switch
(23)
AC input terminal
(6)
LCD display
(15)
Freq//Duty setting encoder
(24)
Remote switch (option)
(7)
Memory switch
(16)
Ext. control signal (Vcon) LED
(25)
Interlock (option)
(8)
OVP setting switch
(17)
Ext. control signal (Vcon) switch
(26)
Communication connector (option)
(9)
LOCK LED
(18)
Ext. control signal (Vcon) terminal
(2) (3) (4) (5) (6) (9) (10) (8) (7) (11) (12) (13) (14) (15) (16) (17) (18)
(1)
(20)
(21)
(22)
(25) (24) (19) (26) (23)
[Rear panel]
[Front panel]

2 External View
10 DOSF series
2-2-6 External View D (Hight: 233mm)
Model: DOSF25-80
(1)
POWER ON/OFF switch
(10)
LOCK switch
(19)
Master/Slave connector (option)
(2)
VOLT/CURR setting encoder
(11)
WAVE switch
(20)
Output terminal
(3)
VOLT/CURR selector switch
(12)
CV/CC switch
(21)
Voltage monitor terminal
(4)
OUTPUT LED
(13)
DISP switch
(22)
Current monitor terminal
(5)
OUTPUT ON/OFF switch
(14)
Freq/Duty selector switch
(23)
AC input terminal
(6)
LCD display
(15)
Freq//Duty setting encoder
(24)
Remote switch (option)
(7)
Memory switch
(16)
Ext. control signal (Vcon) LED
(25)
Interlock (option)
(8)
OVP setting switch
(17)
Ext. control signal (Vcon) switch
(26)
Communication connector (option)
(9)
LOCK LED
(18)
Ext. control signal (Vcon) terminal
(2) (3) (4) (5) (6) (9) (10) (8) (7) (11) (12) (13) (14) (15) (16) (17) (18)
(1)
(25) (24) (19) (26) (23)
(20)
(21)
(22)
[Front panel]
[Rear panel]