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3 Operation   

 

 

4

 

EJ series

 

Matsusada Precision

 

 

3-1 

Overview

 

 
This unit, which is compact and handy, is a polarity switchable bipolar high voltage power supply with 
two output channels 

 

3-2 

How to Operate

 

 
1.  Before operating the unit, check that the input and output are properly connected as shown in 

[1-4 How to Ground]. For safety, be sure to connect the ground terminal on the rear panel to the 

ground at one point. 

2.  Plug the end of the enclosed AC input cord to the AC input connector on the rear panel and then 

plug another end to an electric outlet. 

For safety, be sure to fix the cord with a plastic clamp for securing cables.) 

3.  Connect the interlock. Refer to [3-3 e. Interlock]. 

4.  Turn on the POWER Switch. The unit will be in stand-by mode. 

In this mode, no high-voltage has been applied to the output terminal. 

5.  When the HV ON/OFF switch is turned on, the HV lamp will be on in red, the unit will turn on its 

output. (In the case of local mode) 

6.  Turn the output voltage setting dial to set your desired value. 

7.  When  you  want  to  lock  the  output  at  a  set  voltage,  turn  the  locking  lever 

clockwise as shown in the diagram to the left 

8.  The  output  voltage  and  current  are  displayed  on  the  front  panel  digital 

meter. 

9.  When the output polarity switching switch is set to 

“NEG”, the output polarity will be negative and 

set to 

“POS” be positive. When it is set to “0”, the output voltage will be “0”. 

10.  In order to end the operation, set the setting dial for the output voltage to 

“0” or leave it when the 

same value is used again, turn off the HV ON/OFF switch and POWER ON/OFF switch in order. 

 

3-3 

Other Function 

 

a.  Overvoltage protection (O.V.P) 

This unit has overvoltage protection. In case of an abnormal state, the unit will limits the output 
voltage at approx. 110% of the maximum rated voltage to protect the unit and the load. 

 
b.  Overcurrent protection (O.C.P)

 

This unit has overcurrent protection. In case of an overcurrent state, the unit droops the otuput 
voltage to limit its output current.   

 

 

 

3 Operation 

Locking 
lever

 

OUTPUT 

VOLTAGE 

Summary of Contents for EJ Series

Page 1: ...Instruction Manual F RA 001 3R3 MODEL EJ series B N 208 9 001 208 9 001 Rev 0 2 ...

Page 2: ...prove 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 ...

Page 3: ...ducts 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 elec...

Page 4: ...y 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 att...

Page 5: ...on 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 outpu...

Page 6: ...cure 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 i...

Page 7: ...cking 1 1 3 Installation conditions 1 1 4 Precautions for Handling 2 1 5 Troubleshooting 2 2 External View 3 2 1 Front Panel 3 2 2 Rear Panel 3 3 Operation 4 3 1 Overview 4 3 2 How to Operate 4 3 3 Other Function 4 4 Option 8 4 1 Current Range Change LCr 8 4 2 Cancel Power Outage Protection LN 8 4 3 Carrying Handle LZ 8 4 4 Digital Control LG 8 ...

Page 8: ......

Page 9: ...ar points or any omission please contact us immediately 1 2 Unpacking When unpacking check the following accessories are enclosed with the unit If the accessories are different missing or broken contact us immediately Accessories AC input cord 1 pc Instruction manual 1 pc Output cable 1 pc D Sub connector 1 pc Cover for D Sub connector 1 pc 1 3 Installation conditions Install the unit horizontally...

Page 10: ...he load is expected make the ground wire shorter and thicker 1 It would be rather safe if the unit is operated on an insulation board which is withstand the voltage used 2 Try to handle the power supply or load with your right hand and try to keep the left hand for example putting it pocket 3 Ground the output more than 10 seconds before touching the load after turning off the power supply even lo...

Page 11: ...t range change switch option 3 Output voltage setting dial 7 Output connector 4 Output polarity switching switch 8 Output voltage current meter 2 2 Rear Panel 1 Control connector 4 FUSE 5A 2 Output connector 5 INPUT AC connector 3 GROUND terminal Dimension WxHxD 8 35 212 x 5 51 140 x 16 93 430 inch mm 2 External View 1 2 3 4 5 7 6 8 1 2 3 4 5 ...

Page 12: ...output In the case of local mode 6 Turn the output voltage setting dial to set your desired value 7 When you want to lock the output at a set voltage turn the locking lever clockwise as shown in the diagram to the left 8 The output voltage and current are displayed on the front panel digital meter 9 When the output polarity switching switch is set to NEG the output polarity will be negative and se...

Page 13: ...oltage input Polarity change PIN25 Spare PIN24 Spare PIN23 Spare PIN22 Remote switch ON OFF PIN21 Local remote change PIN20 PIN14 Spare PIN15 Output voltage monitor PIN16 Spare PIN17 COM 7 20 21 25pin PIN18 Spare PIN19 Spare 13 1 25 14 D Sub connector M2 6 fixing screw D Sub connector M2 6 fixing screw Local remote change by a switch S H O RT O P E N Remote Local Local remote change Local remote c...

Page 14: ... external voltage from 0 to 10V g Output current monitor A voltage of 10V will be output at the maximum rating current The output impedance is 1kΩ The polarity of the monitor output follows that of high voltage output h Output voltage monitor A voltage of 10V will be output at the maximum rating voltage The output impedance is 1kΩ The polarity of the monitor output follows that of high voltage out...

Page 15: ... polarity can be also switched with an external switch Requirements for open collector Output Switch Open collector ON Short VCE 0 4V or lower 10mA OFF Open VCE 2V or higher Open 5V Switch 17 25 COM Polarity change by a switch S H O R T O P E N Output ON Output OFF Polarity change Polarity change by an open collector 1 E C Instead of a switch an open collector is also available 5V ...

Page 16: ...witch on the front panel 100 10 F S 4 2 Cancel Power Outage Protection LN The power outage protection is a standard built in function but using this option the protection can be canceled That means that the high voltage output follows the AC input 4 3 Carrying Handle LZ Handle for carrying the unit can be installed on the top of the unit 4 4 Digital Control LG By connecting the unit to GP HV with ...

Page 17: ...Revision History Rev No Rev Date Revision Contents 0 0 2009 09 First edition 0 1 2010 11 Reformatted 0 2 2020 10 Applied new format ...

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