• R4K-80 series | DC power supply Benchtop | Matsusada Precision
  • R4K-80 series | DC power supply Benchtop | Matsusada Precision

Ultra Slim programmable DC Power Supply

Width: Only 1.38-inch / Output Power: 80W

  • Max. Voltage: 16V to 320V
  • Max. Current: 0.5A to 10A
  • Max. Power: 80W
  • Only 1.38-inch wide

Ultra Slim Sophisticated Benchtop Power Supply

R4K-80 series is a higher performance DC variable power supply. The 4-digit digital meter and high resolution D/A, A/D converters are added newly for more precise setting and reading. Needless to say, the innovative compact size, variable range feature, and high operability are remaining same as conventional RK-80 series.

The series is the best DC power supply for a variety of applications from laboratory experiments to automated line productions.

New user-friendly functions

New and useful functions and stylish front panel design!

Useful new feature of variable setting range

New user-friendly functions

Set voltage/current value within 80 W, then turn on output

* Not automatic range change which can output 80 W all the time. Resetting is required.

Quick access to functions needed

  • No.1Preset setting is automatically displayed when output is off.
  • No.2 OCP is added for more safety operation.
  • No.3 Quick lock with one touch action. Two selectable lock options.

More useful!

  • Compact and light-weight space saving design
  • Very quiet due to the adopting naturally-cooled system without cooling fan
  • Wide output range
    R4K-80L:16 V/10 A, R4K-80: 36 V/5 A , R4K-80M: 110 V/1.3 A, R4K-80H: 320 V/0.5 A
  • Unique low noise power conversion technology for research application
  • Power factor correction and universal input
  • Multiple units operation with master/slave and digital interface (option)

Useful NEW Five Additional Functions

4-digit digital meter (output voltage and current)
High resolution D/A, A/D converter integrated
As one click of rotary encoder is one count, fine setting is possible.
Digital interface as standard function
Digital interface shall make the data logging and automatic measurement easier.

* Conversion adapters suitable for RS-232C, RS-485 or GPIB is separately required.

Various waveform with pulse and ramp sequence function at will
With pulse/ramp sequence function (optional), various test pattern can be set without computer.
Output voltage and output current can be set speedily.
When setting output voltage and output current by rotary encoder on front panel, every time fine switch is pressed, setting digit on digital display will be switched. In case, setting small output value or change setting value widely, setting can be done speedily. (Fine switch cannot be used when output value is set by remotely.)

Models

Model Output Ripple *1 (rms) Minimum setting unit *2 AC input
Voltage [V] Current [A] Power [W] Voltage Current Voltage Current Input Voltage Input Current (typ.) Power factor
(typ.)
100 V 240 V
R4K-80L 0 to 16 V 0 to 10 A 80 W 5 mV 10 mA 10 mV 10 mA 85 to 264 Vac
47 to 63 Hz
single phase
1.1 A 0.5 A 0.99 *3
R4K-80 0 to 36 V 0 to 5 A 5 mV 4 mA 10 mV 1 mA 1.1 A 0.5 A 0.99 *3
R4K-80M 0 to 110 V 0 to 1.3 A 10 mV 2 mA 100 mV 1 mA 1.1 A 0.5 A 0.99 *3
R4K-80H 0 to 320 V 0 to 0.5 A 20 mV 1 mA 100 mV 0.1 mA 1.1 A 0.5 A 0.99 *3
  1. The ripple applies from 10% to 100% of the rated output.
  2. The value at local control. More precise setting can be available with remote digital control. Please see "Various Digital Control Functions".
  3. Maximum output @115 Vac input

Functions

Three position preset memory function

Memorize three voltage and current settings in addition to the standard preset values.

There is no need to adjust the output when different setting, and convenient function for production inspection process or testing which require frequent data taking.

Memory (A)
Multi Setting Function memory a
Memory (B)
Multi Setting Function memory b
Memory (C)
Multi Setting Function memory c
Multi Setting Function

Sink Current Suppression

When supplying power to loads with capacities like batteries and capacitors, the sink current suppression is used to reduce the reverse current flowing from the load to the unit in order to prevent a voltage drop on the load as the output is OFF or the set voltage is lowered.

Note:
Reverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)
Prevention of reverse current

Delay Trigger Function

Only one R4K-80 is available when -LUs1, -LGob, or -LEt option is selected.

When turning OUTPUT ON/OFF, you can start or stop the output operation with some delay. The function is available not only for a single power supply but also for multiple units of Matsusada DC power supplies in the digital interface *1 which are individually set values of output voltage/current in addition to a single power supply. *2

  1. R4K-36 series, RK-80 series, RK series and REK series
    For details, contact our sales office. They can be connected up to 16 units.
  2. Can be connected up to 16 units.
  3. Only for slave-local
    In case of slave remote control, exact same model of power supply need to be used. Also, in case of slave-local, each output voltage and current can be set individually. In case of slave-remote, output voltage and current can be set with one-control function which each slave unit follows the master unit setting.
Delay Trigger Function

* +1 and +8 can be set respectively in 0.0 s to 99.9 s.

Two-level Lock Function

Two-level lock is selectable: "Full Lock" for locking all the switch operations and "Standard lock" for locking except for the output ON/OFF.
"Full lock" is used to prevent all errorneous operations, and "Standard lock" is for readily applying the emergency
stop along with the misoperation prevention, which can ensure "safe" operation.
(Emergency stop by the power switch is available in both the two lockings. )

Full LOCK

Locks all the switch operations except canceling the lock function.
It is especially suited to prevent misoperations in remote control.

Full LOCK function image

Standard LOCK

Locks the voltage/current setting switches.
It can prevent mistakenly changing the output setting in local control, and immediately apply emergency stop.

Standard LOCK function image

Remote Function

Remote switch ON/OFF

Remote switch ON/OFF
Output Relay Open collector
ON SHORT VCE ≤ 0.4 V
OFF OPEN VCE ≥ 2 V

Sink current 1 mA

* +S is common. So external control voltage shall be input with +S as reference. Otherwise it can cause failure.

Remote sensing

The function ensures the prevention of stability deterioration which could be caused by the voltage drop (V0-VL) due to resistance (R) of the output wire or contact resistance.

Remote sensing

Digital Interface

Enable digit control via LAN/USB/RS-232C/RS-485/GPIB as well as one control with Master/Slave. When noisy environment is presumed, the following -LGob option (optical interface) is required.
Master/slave | DC power supply Benchtop | Matsusada Precision

Adapters (separately sold)

To use the digital interface, you need to prepare an digital interface adapter separately.
The following interface adapters are available according to the communication method of your controller port.

Adapter for LAN: CO-E32m

Total 16 units can be connected to one CO-E32m.
LAN cable is not provided.

Adapter for LAN: CO-E32m | DC power supply Benchtop | Matsusada Precision

Adapter for USB: CO-U32m

Total 16 units can be connected to one CO-U32m.
USB cable is not provided.

Adapter for USB: CO-U32m | DC power supply Benchtop | Matsusada Precision

Adapter for RS-232C (9 pin): CO-MET2-9
Adapter for RS-232C (25 pin): CO-MET2-25
Adapter for RS-485 (25 pin): CO-MET4-25

[Dsub⇔Modular jack] Total 16 units can be connected.

Adapter for RS-232C: CO-MET2-9< | DC power supply Benchtop | Matsusada Precision

Adapter for GPIB: CO-G32m

Total 16 units can be connected to one CO-G32m.
GPIB cable is not provided.

Adapter for GPIB: CO-G32m | DC power supply Benchtop | Matsusada Precision

(A) CO-M cable
A two-meter cable is provided in each unit without interface option.
If you need a longer cable, please consult with our sales staff.

Various Digital Control Functions

Control
function
  • Output ON/OFF setting
  • Status output
    Fault/Output/OVP/OCP/OT/ACF/reversible sense connection
  • Maximum 16 units digital control (-LGob option models: 32 units) digital control
  • One control function for multiple units
Write function
Output voltage setting/Output current setting
Percent mode (100.00%)
* voltage current value mode (maximum rated voltage and current value)
OVP setting/OCP setting
Percent mode (100.0%)
voltage current value mode (maximum over voltage/over current protection value)
Reading function
Output voltage reading/Output current reading
Percent mode (100.00%)
* voltage current value mode (maximum rated voltage and current value)
Output voltage setting/Output current setting
Percent mode (100.00%)
* voltage current value mode (maximum rated voltage and current value)
OVP setting/OCP setting
Percent mode (100.0%)
voltage current value mode (maximum over voltage/over current protection value)

* Minimum value of each model is same as minimum display of front panel meter.

Dual Tracking, Multiple Outputs

Dual tracking control enables both positive and negative outputs simultaneously in master/slave control. In addition, using the slave local mode, the dual tracking operation can consist of multiple outputs. The positive and negative output voltages (+V and -V) in dual output will output in synchronization with turning on the power of the master machine.

Please refer to Operations.

Dual Tracking

Dual Tracking

Multiple Outputs

Multiple Outputs

Operation example

R4K-80 series, the output voltage and the output current can be increased by connecting the same models in series or parallel operation. As to the control, the use of local control or digital master/slave control is recommended.

External I/O control connector (LS- in the remote switch and Ground (GND) in the remote multifunction) is connected to +output, so do not share the other commons.

Series operation

The total output voltage between the models with -LH option is up to 1 kV and, other models offer the output voltage up to 250 V. As of models exceeding the above the maximum voltages, exceeding 1kV or 250 V, the series operation is not allowed. The output current comes with the minimum value to the voltages.

Series operation

Parallel operation

Please use the same voltage for parallel operation. The output current comes to the sum of each current. In order to prevent damages, please ensure to have the maximum level of OVP of the power supply.

Parallel operation

Split operation

+output and -output are available.

Split operation

Specifications

For details, download the datasheet below.

Options

-LDe: Pulse Ramp Sequence

Below output control, between A to D are available.

A. PULSE SEQUENCE

Sequential operation is possible by using voltage and current set on each memory a, b and c in combination with multi-set function. Not only continuous operation, but also it is possible to specify the times. It is suitable to evaluation tests for products as various operations, like as repeat of a and b only or repeat of b, c and off only, are enabled by setting time of memory a, b, c and off to 0.0.

A. PULSE SEQUENCE

ta, tb, tc and toff can be set with range 0.0 s, 1.0 s to 99.9 h respectively.

B. RAMP SEQUENCE

It enables to make ramp action up to set voltage or current (or from the set voltage or current to 0 V or 0 A). It is useful to like to rise (reduce) voltage or current slowly. It helps sensitive electrical load not to get damaged by overshoot.

* For ramp action, it is possible to select "both of set voltage and current", "only set voltage", or "only set current".

B. RAMP SEQUENCE

t1 and t2 can be set with range 0 to 999 s respectively.

C. COMBINATION of PULSE and RAMP SEQUENCE

It is also possible to use pulse sequence combined with ramp action. If multi-set function is combined with the too, it is able to make sequence action by using voltage or current set on memory a, b, and c.

Not only continuous operation, but also it is possible to specify the times. It is useful in various aspects as it is possible to rise (reduce) voltage or current slowly up to three set value.

C. COMBINATION of PULSE and RAMP SEQUENCE

t1, t2, t3 and t4 can be set with range 0 s to 999 s respectively.
ta, tb, tc and toff can be set with range 0.0 s, 1.0 s to 99.9 h respectively.

D. MASTER FOLLOW

Pulse sequence actions at master-slave and output signal to slave units at ramp action are transmitted. By this function, it is possible to make slave units to output on different output condition from the master unit.

* The master follow function is unavailable with -LEt or -LUs1 option.

D. MASTER FOLLOW
Note: The operation accuracy of the timer when sequencing is ±0.5%. Be careful when you use it by the long-term running operation.

-LEt: LAN Interface Board *1 *2 *4

Enable digital control via LAN.

HUB shall be required between R4K-80 and computer when control multiple R4K-80.

LAN Interface Board

-LGob: Optical Interface Board *1 *2

With optical communication, isolation control is performed. As complete isolation is performed by means of optical fiber, this enables advance prevention of erroneous operation involved with transient phenomenon caused by surges, inductive lightning, external noise, etc.

  • -LGob: Optical interface board + optical cable 2 meters
  • -LGob(Fc5): Optical interface board + optical cable 5 meters
  • -LGob(Fc10): Optical interface board + optical cable 10 meters
  • -LGob(Fc20): Optical interface board + optical cable 20 meters
  • -LGob(Fc40): Optical interface board + optical cable 40 meters

Select the optional optical interface board (-LGob) when using this DC power supply under the following conditions.

  • Noisy environment including factories (Example: Motors or coils are used near power supplies and loads).
  • Using with high voltage floating (more than 250 V)
  • Installation distance of 2 meters or more between the DC power supply and a controller such as a computer, laptop, or Programmable Logic Controller (PLC).

Adapters (separately sold)

To use the optical interface, you need to prepare an optical interface adapter separately.
The following interface adapters are available according to the communication method of your controller port.

Adapter for LAN: CO-E32

Total 32 units can be connected to one CO-E32.
LAN cable is not provided.

Adapter for LAN: CO-E32m | DC power supply Benchtop | Matsusada Precision

Adapter for USB: USB-OPT

Total 32 units can be connected to one USB-OPT.
USB cable is not provided.

Adapter for USB: CO-U32m | DC power supply Benchtop | Matsusada Precision

Adapter for RS-232C (9 pin): CO-OPT2-9
Adapter for RS-232C (25 pin): CO-OPT2-25
Adapter for RS-485 (25 pin): CO-OPT4-25

[Dsub⇔Modular jack] Total 32 units can be connected.

Adapter for RS-232C: CO-MET2-9 | DC power supply Benchtop | Matsusada Precision

Adapter for GPIB: CO-G32

Total 32 units can be connected to one CO-G32.
GPIB cable is not provided.

Adapter for GPIB: CO-G32m | DC power supply Benchtop | Matsusada Precision

-LH: Higher isolation voltage

This option make the isolation voltage to be ±1 kV, which enable extended capability of series operation capability.

-LIc: Output current accumulation function *3

This option accumulates the output current and display the value (up to 100 Ah). The accumulated value is stored even when output is off. You can set in advance the maximum accumulated output current to stop the output. It is very suitable for applications such as controlling plating solution.

-LUs1: USB Interface Board *1 *2 *4

Enable digital control via USB.

When controlling several R4K-80 power supplies via USB, a USB HUB will be required between the computer and R4K-80 power supplies.

USB Interface Board

-L(Mc0.5), -L(Mc0.15): Changing of communications cable*1

The CO-M cable length can be selected from 0.15 meters or 0.5 meters. Select one of the two types above.

  1. Selecting each individual option simultaneously in -LEt, -LGob, -LUs1, and -L(Mc0.5) or -L(Mc0.15)
  2. As for the option, digital interface is not attached. For more information on the digital interface, refer to CO/USB series datasheet.
  3. Please consider the location of usage. High humidity environment can be the cause of failure and corrosion.
  4. Master/slave function is unavailable.

How to Order

When ordering, add Option No. to Model No. in alphabetical order followed by the input voltage.
Example:R4K-80-LDeGobHIc, R4K-80L-LDeHIcUs1

Accessory

AC Input Cable

Standard
CABLE TYPE 1
125 V/10 A
  • CABLE TYPE 1 Power Input End
  • CABLE TYPE 1 Input Plug
Sold separately
CABLE TYPE 3
250 V/10 A
  • CABLE TYPE 3 Power Input End
  • CABLE TYPE 3 Input Plug
Sold separately
CABLE TYPE 4
250 V/10 A
  • CABLE TYPE 4 Power Input End
  • CABLE TYPE 4 Input Plug

Accessory Kit

Various accessories are available for convenient use of the unit.

Stand

The stand is useful to use as single unit.

Stand
Stand
Binder

For the applications which require two to six units combination. Dual, triple and quad multiple operation is possible.

* Cooling fan is needed for more than three units combination.

Binder
Binder
Rack mount holder (RMO series)

  • 10 Units/1 rack holder, and can be placed in a cabinet. Easy to take one unit out.
  • Best suitable for a system operation
  • With fan unit (100 Vac) * Contact our sales representatives.
  • The rack holder enable consolidate to one.
Rack mount holder

* Power supply is not included in the accessories.

Dimensions

For details, download the datasheet below.

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