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4  Advanced  Operation 

4-1 

4

 

  Advanced Operation 

 

4-1 Series/Parallel Operation 

Output current of the REH power supply units can be increased by connecting the output of 

the same model in parallel. 

 
    4-1-1 Parallel Operation 

Connect units of identical rated output voltage and current 

as per diagram right. The same voltage should  be set for all. 

Output current is the total of the individual  current. 

Set the OVP level of all power supply units to maximum to avoid 
damage. 

 
 

4-2 OVP Program Setting with External Voltage 

1.

 

Input the OVP program voltage between the PINS 5 and 18 for remote control. 

2.

 

Turn the OUTPUT switch ON and adjust the output voltage to the desired OVP voltage 

(110 % of the rated output for 10 V). 

3.

 

Reduce the OVP program voltage gradually until the FLT (fault) indication is illuminated 

and the power is shut down. 

4.

 

Turn the OUTPUT switch OFF and turn the voltage knob to 0. 

5.

 

Turn the OUTPUT switch back ON, increase the output voltage gradually and make sure 

that the output is shut down at the set OVP voltage. 

 

 

 

 

 

 

 

 

 

 

 

 

 

+ 

 

+ 

PS1 

+ 
+ 

- 
+ 

PS2 

+ 
+ 

- 
+ 

 

TB1 

0-10Vdc 

 

 

18 

+ 

 

19 

-S 

(Common) 

Power supply unit 

Internal circuit 

User connection 

CAUTION 

Summary of Contents for REH Series

Page 1: ...MODEL REH series Instruction Manual Rev 0 4 B N 105 9 306 105 9 306 ...

Page 2: ...the symbols and observe each item Depending on the product some symbols may not used 禁止 Indicates content that could cause death or serious injury Indicates content that could cause injury or damage to property Indicates danger warning caution Refer to the instruction manual when using the part with this symbol Indicates where high voltage is handled Touching it may cause electric shock and result...

Page 3: ...inal or GND terminal connect it to the ground If the input terminal of the product is an inlet type connect to the power outlet with the ground using the supplied power cable or a power cable suitable for the area to be used If it is not connected to the ground there is a risk of electric shock and fire which is extremely dangerous About power supply cable If there is a power supply cable attached...

Page 4: ...ght hand In case of electric shock when manipulating the product in order to reduce the risk of current flowing through important organs of the body Keep your left hand off from the product and operate with your right hand Do not touch the wiring or load connected to the output terminal or output terminal during operation or immediately after output stop Very high voltage is applied to the termina...

Page 5: ... and exhaust port are blocked the specified performance of the product cannot be demonstrated and parts are deteriorate which may cause smoke and fire When work such as welding is conducted near the product disconnect all the wires from the product Do not wipe with chemicals thinner etc or wet cloth There is a danger of electric shock electric leakage burnout from chemicals or water entering the i...

Page 6: ...v ...

Page 7: ...nd 3kW Type 2 4 2 4 3 Front panel 6 4kW to 15kW Type 2 5 2 4 4 Rear panel 6 4kW to 15kW Type 2 5 2 4 5 Dimensions 1 1kW and 3kw Type 2 6 2 4 6 Dimensions 6 4kW to 15kW Type 2 6 2 5 TB1 Connector for Remote Control 2 7 2 5 1 Instruction on the Connection of TB1 Connector for Remote Control 2 8 2 6 Connection 2 9 2 6 1 Attaching the Output Cable 1 1kW and 3kW Type 2 9 2 6 2 Attaching the Output Cabl...

Page 8: ...rature Protection 3 7 4 Advanced Operation 4 1 4 1 Series Parallel Operation 4 1 4 1 1 Parallel Operation 4 1 4 2 OVP Program Setting with External Voltage 4 1 4 3 Turning Output ON OFF with the Remote Switch 4 2 4 4 Remote Programming 4 3 4 4 1 Setting the Voltage Program with External Voltage 4 3 4 4 2 Setting the Voltage Program with External Resistance 4 3 4 4 3 Setting the Current Program wit...

Page 9: ... constant current modes Compact size and light weight achieved by the unique high frequency switching technology Output enable disable with an external signal Remote control of output voltage and current Status signals CV CC FLT Output monitor Read output voltage and output current 1 3 Operation Modes The REH Series units operate in two basic modes constant voltage and constant current mode In the...

Page 10: ...here is no foreign object such as liquid or metal piece from the air vent because such could cause failure of unit electrical shock or fire This power supply is designed for the size of 19 inch rack When you install to the rack hold the chassis with the guide Do not hold the power supply with only fixing holes on front panel Front panel handle is strictly for the purpose of changing the direction ...

Page 11: ... 60Hz phase INPUT CURRENT Typ 750V 20A 15kW 220V 3φ 68A 900 V 16A 14 4kW 220V 3φ 65A 1000 V 1 1A 1 1kW 230V 1φ 3φ 11A 7A 3A 3kW 220V 3φ 14A 6 4A 6 4kW 220V 3φ 30A 15A 15kW 220V 3φ 68A 1200 V 10A 12kW 220V 3φ 54A L 115V Input current is about 200 of Input current 1 1kW models only L 400V Input current is about 55 of Input current 6 4kW to 15kW models only 1 Input current are at rated input voltage ...

Page 12: ... In case of 1 1kW model and single phase input fix L1 on L Line L2 on N Neutral and on GND of input terminal board with screw GND Be sure to connect the GND For safety be sure to attach the covers provided 1 1kW Input phase 1φ type 1 1kW Input phase 1φ L 115V type MUST PUT ON PLASTIC COVER BLACK WHITE GREEN I N P U T AC 230V 1φ L1 L2 L3 I N P U T AC 115V 1φ N L NC PUT ON PLASTIC COVER BLACK WHITE ...

Page 13: ...etting switch OVP setting volume Output voltage setting volume potentiometer dial Output current setting volume potentiometer dial Vent holes POWER ON OFF switch OUTPUT ON OFF switch OUTPUT ON indicator LED Fault indicator External switch OFF indicator Remote programming indicator Volt meter Current meter Remote enable indicator for GP IB Input voltage AC230V 1 1kW Type AC220V 3kW Type 115V for L ...

Page 14: ...R ON OFF switch OUTPUT ON OFF switch OUTPUT ON indicator LED Fault indicator External switch OFF indicator Remote programming indicator Volt meter Current meter Remote enable indicator for GP IB Input voltage AC220V 400V for L 400V Input phase 3φ Input frequency 50 60Hz Function setting switch Connector for remote control D sub 25 pin Connector terminals for options GND terminal Output Connector E...

Page 15: ...2 Installation and Operation 2 6 2 4 5 Dimensions 1 1kW and 3kW Type 2 4 6 Dimensions 6 4kW to 15kW ...

Page 16: ... common PIN 5 Program monitor reference voltage return PIN 4 Remote switch input PIN 3 Output current monitor output PIN 2 Current mode program input PIN 1 Voltage mode program input OVP local remote switch PIN25 NC PIN24 NC PIN23 Voltage mode local remote switch PIN22 Remote switch input PIN21 Local remote switch PIN20 PIN14 10 24V output reference voltage 4 2mA max PIN15 Output voltage monitor o...

Page 17: ...n couples of meters TB1 PIN1 2 3 5 7 9 10 14 15 17 18 20 21 22 25 The longer the wiring become it will be more influenced from the outside noise and kept away from Large noise source It might cause malfunction or failure NOTE In case above condition can not be obtained combination of LGob GP IB RS232C Interface board is recommended Do not connect PIN 5 or 10 of TB1 to output If minas output wire i...

Page 18: ...ct connection or grounding Make sure to connect the Output Cable to the Output Connector Make sure to connect the GROUND of the Output Cable to the negative Pole of the Load and the GROUND of the power supply 2 6 1 Attaching the Output Cable 1 1kW and 3kW Type Make sure to connect the Output Cable to the Output Connector MUST Make sure to connect the GROUND of the Output Cable to the GROUND of the...

Page 19: ...Operation 2 10 2 6 2 Attaching the Output Cable 6 4kW to 15kW Type Make sure to connect the GROUND of Output Cable to the GROUND of the power supply MUST Make sure to connect the Output Cable to the Output Connector MUST ...

Page 20: ...nt on the ground Make sure to connect and wiring the Output Cable output cable ground terminal ground Load Frame Load Wires should be more than AWG10 less than about 5m not bared rack mount case MUST Ground at one point MUST MUST CAUTION Make sure to connect the negative Pole of the Load and the Output Connector and GROUND terminal MUST ...

Page 21: ...load insert a diode whose output voltage and current is higher than those of the power supply to protect the power supply from the kickback of the load L o a d 1 L o a d 2 L o a d 3 P S Improper connection L o a d 1 L o a d 2 L o a d 3 Proper connection P S P S Di Dielectric load Transformer motor etc ...

Page 22: ...b clockwise all the way to the maximum or ensure that it is set to the required current which allows setting to the desired voltage 3 1 2 Constant Current Mode The power supply unit operates in the constant current mode when the load resistance is low enough to make the load current IL more than the current setting IL Iset In the constant current mode the current is constant at the set value Iset ...

Page 23: ...oltage Output Current 1 Turn counterclockwise the output voltage output current setting dial on the front panel all the way 2 Turn the power switch ON 3 Pressing the output voltage output current preset switch and keeping it pressed shows the voltage and current settings on the display Turn the output voltage dial to adjust the voltage as desired Then turn the output current setting dial to adjust...

Page 24: ...ing the OVP setting switch and keeping it pressed indicates the OVP set voltage on the voltmeter of the display Turn the OVP setting volume to adjust the voltage to the desired value 3 Turn the output voltage setting dial counterclockwise all the way minimum 4 Turn the OUTPUT switch back ON increase the output voltage gradually and make sure that the output is shut down at the set OVP voltage ...

Page 25: ...ase of high voltage floating Although the unit integrates full protection circuits there might be the possibility of failure when operated with excessive voltage or energy 3 4 1 Setting Current Voltage and OVP No 1 The current voltage and OVP are all set in the remote mode set externally There shall be no output without inputting Voltage program and Current program When OVP voltage is not programm...

Page 26: ...cal mode Or External relay CLOSED Voltage Current or OVP setting remote mode External relay OPEN Voltage Current or OVP setting local mode Voltage set in the remote mode Current set in the remote mode TB1 TTL signal 10 22 21 External relay 5kΩ 100Ω 9 8 S Common S Common Power supply unit Internal circuit Remote mode User connection TB1 TTL signal 10 External relay 5kΩ 100Ω 9 S Common S Common Powe...

Page 27: ...tput if the power is recovered while in operation To reset turn the OUTPUT ON OFF switch to OFF and then back ON When the blackout protection function is not to be used turn SW1 8 ON In this case output for the set value is generated when the power is recovered TB1 TTL signal 13 12 11 25 External relay 5kΩ 100Ω 10 24 23 S Common S Common Power supply unit Internal circuit User connection SW1 ON 1 ...

Page 28: ...put OUTPUT ON OFF switch shall be ON In this case the unit output the set output value after recovery For manual recovery set the 7 pin of SW1 to ON see below In this case unit shall not recover from over temperature protection even when the internal temperature gets down to normal temperature Once turn Power switch off and back on to resume the output Then turn off Output ON OFF switch and back i...

Page 29: ...e 4 2 OVP Program Setting with External Voltage 1 Input the OVP program voltage between the PINS 5 and 18 for remote control 2 Turn the OUTPUT switch ON and adjust the output voltage to the desired OVP voltage 110 of the rated output for 10 V 3 Reduce the OVP program voltage gradually until the FLT fault indication is illuminated and the power is shut down 4 Turn the OUTPUT switch OFF and turn the...

Page 30: ... of the external relay available for the individual units TTL LOW OUTPUT ON TTL HIGH OUTPUT OFF Or External relay CLOSED OUTPUT ON External relay OPEN OUTPUT OFF Turning ON OFF with power supply units serially connected PINs 4 and 8 can be used floating S common to 100 V 5Vdc ON OUTPUT OFF 5Vdc OFF OUTPUT ON To make ON OFF of and to OFF ON to reverse the logic To make OFF ON apply 5 V between PINs...

Page 31: ...ram with External Voltage External voltage can control the output voltage 4 4 2 Setting the Voltage Program with External Resistance External resistance can control the output voltage Turn SW1 1 ON CAUTION TB1 0 10VDC 5 1 S Common User connection Power supply unit Internal circuit ON SW1 1 8 0 10kΩ TB1 6 5 1 S Common 0 1mA Power supply unit Internal circuit User connection ON SW1 1 8 ...

Page 32: ...ut current Turn SW1 2 ON 4 5 Monitor Status Output 4 5 1 Monitor Output TB1 0 10VDC 5 2 S Common User connection Power supply unit Internal circuit ON SW1 1 8 TB1 0 10kΩ 5 2 S Common 0 1mA Power supply unit Internal circuit User connection ON SW1 1 8 5 1 Output current monitor 0 10VDC 15 3 0 10VDC 1kΩ 14 18 0 10VDC 1kΩ S Common Power supply unit Internal circuit User connection V Output voltage mo...

Page 33: ...the following conditions Resistance to voltage 30V Sink current 50mA or less CV 13 6 CC 12 FLT OVP OTP over temperature protection AC fault AC voltage drop 11 TB1 13 12 11 20Ω 20Ω 10 9 8 7 6 25 24 23 22 21 20 19 20Ω User connection 5mA or less R 4 7kΩ at Vcc 24V Vcc R PIN6 PIN11or12or13 Power supply unit Internal circuit Example CAUTION ...

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