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  • R4GT series | DC power supply Benchtop | Matsusada Precision
  • R4GT series | DC power supply Benchtop | Matsusada Precision

Ultra-low Noise Programmable DC Power Supply

Optimal for microcurrent loads with high-resolution current settings

  • Voltage range: 6V to 36V
  • Current: 0.01A to 0.3A
  • Power: 0.1W to 7.2W
  • CC-Link interface option

Precise Setting of Current and Output with High Resolution D/A and A/D Converter

The R4GT series is an ultra-low noise, high-resolution programmable DC power supply engineered for demanding applications such as precision plating. Building on the proven platform of our renowned R4G series, the R4GT offers exceptionally precise current control with a resolution down to 10 μA. Its superior stability and performance also make it the ideal choice for testing current-sensitive components, including LEDs and a wide variety of electronic sensors.
Superior usability is achieved with the FINE function, which allows for quick voltage and current setting.
Moreover, offer digital communication options, making them suitable for a wide range of applications, from experiments to automated production lines.

FEATURES AND BENEFITS

  • Function for Pulse and Ramp Action (option)
    Sequential operation is provided by using pulse combined with ramp action without external programming devices or computers.
  • Four-Digit Output Voltage and Current Meters
    Output displays of the voltage and current are 4-digit meter, and units in the setting are selectable in "1 mV, 10 mV" and "0.01 mA, 0.1 mA" (varies by the models), enabling minute setting and output control without a multimeter.
  • Current Integration and Auto-Stop Function (Optional)
    This function integrates the total output current over time and can automatically stop the output at a preset value. This is invaluable for precise control of plating thickness and managing plating solutions.
  • High-Speed Response
    High-speed response with ultra-low ripple and noise is applied to enhance electroplating performance with high precision
  • Standard Analog and Optional Digital Interfaces
    Analog remote control comes standard. For integration into automated systems, a wide array of optional digital interfaces are available, including CC-Link, USB, LAN, GPIB, and RS-232C/485.
  • Fanless Cooling Design
    It is quiet since it uses natural convection air cooling without a fan. In addition, it is a safe design in which the heat sink is not exposed from the case.
  • Suitable for precise current load by setting output current in minimum span 10μA.
  • Automatic stop function at a preset value of the current integration

APPLICATIONS

  • Electroplating
  • Evaluation of plating solution
  • Hull cell testing
  • Various sensors
  • Electrochemical experiments
  • Electronic devices
  • Tests for luminous elements, LED, Organic Electroluminescence (OEL), etc. to handle minute current

Models

  • Please avoid utilizing them under corrosive gas or plentiful moisture environment.
  • All the models in the below table are positive common power supply. Please contact our sales office for negative common models.
Model Output
Voltage Current Power
R4GT6-0.3 0 to 6 V 0 to 0.3 A 1.8 W
R4GT10-0.01 0 to 10 V 0 to 0.01 A 0.1 W
R4GT18-0.1 0 to 18 V 0 to 0.1 A 1.8 W
R4GT18-0.2 0 to 18 V 0 to 0.2 A 3.6 W
R4GT36-0.1 0 to 36 V 0 to 0.1 A 3.6 W
R4GT36-0.2 0 to 36 V 0 to 0.2 A 7.2 W

* Values are ones at local control. It is possible to set finer (or higher-resolution) values by digital communication. Refer to page 4 “Digital Control Function”.

Discontinued models

The following model is no longer available as we have stopped production and sales.

Model Output
Voltage Current Power
R4GT18-2 0 to 18 V 0 to 2 A 36 W
R4GT36-1 0 to 36 V 1 A 36 W

Functions

Pulse/Ramp (Option)

Following output controls of A to E are applicable.

A. Pulse (Step) Sequence Function

A. Pulse sequence
The parameters ta, tb, tc, through tt and toff can be set to 0.0 s to 9999 h 59 m 59.9 s.

The Sequence function lets you generate complex voltage and current patterns by automatically cycling through settings stored in memories a, b, c, through t. You can run the sequence continuously or for a specified number of cycles. By setting the duration of any step (a, b, c, through t or off) to 0.0, you can easily skip steps to create custom test patterns. This flexibility is ideal for product evaluation and reliability testing.

B. Ramp Function

B. Ramp operation
The t1 and t2 parameters can be set from 0.0 s to 9999 h 59 m 59.9 s.

The Ramp function provides linear control to gradually increase the output to a set voltage/current, or decrease it to zero. This feature is useful for applications that require a slow power-up or power-down. *The ramp operation can be applied to: Voltage and Current, Voltage Only, or Current Only.

C. Combined Sequence and Ramp

C. Pulse & Ramp
t1 to t21, ta to tt and toff can be set from 0.0 to 9999 h 59 m 59.9 s.

For advanced control, the Sequence and Ramp functions can be used together. This allows you to create complex profiles by smoothly ramping the voltage and/or current between the discrete steps defined in memories a, b, c, through t. The unit can run the entire waveform continuously or for a pre-defined number of cycles, and allows you to set up to 20 voltage and current values, making it a powerful tool for a variety of test scenarios.

D. Delayed trigger ramp

Delayed trigger ramp
* t1 and t2 can be set respectively in 0.0 to 99.9 s.
* ton can be set in 0.1 s to 9999 h 59 m 59.9 s and toff can be set in 0.0 to 9999 h 59 m 59.9 s

This is one of the combinations with delayed trigger function and ramp function, after OUTPUT is made ON, ramp output is started in time delayed.

E. Master Follow

E. Master Follow

Master-follow is a function that allows a slave equipment to follow the output status of the master equipment in a master/slave connection. The output status of the master equipment is transmitted to the slave equipment to enable interlocked operation. The master and slave can be set to different modes of operation, allowing for complex testing.

External Analog Remote Control

External Output ON/OFF
Output can be turned ON/OFF by relay or TTL signal.
Logic of OUTPUT can be made reverse.
Output Control (Voltage, Current)
Use control voltage as floating but not grounding.
Potential on COMMON is the same as one of the positive output terminal. If COMMON in the customer's equipment is grounded, not only power supply can not be controlled, but also damage to equipment may be caused. And if a multi-channel and non-isolated Programmable Logic Controller (PLC) is utilized, please take care that the ground of other equipment is connected through the PLC in a certain case.
Output Monitor (Voltage, Current)
Output of Status
COMMON is floating with the output of the open collector for each COMMON.
Voltage resistance 30 Vdc, Sink current ≤ 5 mA
Remote Sensing
Prevent degrade stability due to voltage drop (Vo-VL) by resistance (R) in output wiring or contact resistance. (up to max. 0.5 V)

Parallel Operation by One Control

Parallel Operation by One Control | R4GT series | DC power supply Benchtop | Matsusada Precision

One master unit can control several slave units that are parallel connected. It is possible to increase output current by connecting two units of the same model power supply in parallel.

Digital Control Function (at selected various optional digital interfaces)

Control Function
  • Output ON/OFF setting
  • Display of various Status (Output/Operation/OVP/OCP/Interlock)
  • Digital Control Maximum 16 units (-LGob option models: 32units)
  • Package Control Multiple Units Hooked
Write Function Setting Output Voltage Percent Mode *1, Voltage or Current Value Mode, *2
Setting Output Current
Setting OVP Percent Mode *1, Voltage or Current Value Mode, *2
Setting OCP
Read Function Measured Output Voltage Percent Mode *1, Voltage or Current Value Mode, *2
Measured Output Current
Setting Output Voltage Percent Mode *1, Voltage or Current Value Mode, *2
Setting Output Current
Setting OVP Percent Mode *1, Voltage or Current Value Mode, *2
Setting OCP
  1. Minimum setting unit for each model is one ten-thousandth (100.00%).
  2. Minimum setting unit for each model is one count of the indicator.

Specifications

Input voltage
120 Vac ±10%, 50/60 Hz, Single-phase
Output voltage control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc
[Digital remote] Command (option)
Output current control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc
[Digital remote] Command (option)

For details, download the datasheet below.

Options

-LCk *1 NEW

CC-Link Interface Port

A CC-link master unit such as a PLC can control power supplies with a CC-link compatible with CC-link ver1.10, which is possible to operate as a CC-link device station. One unit occupies two stations, and a maximum of 32 units can be controllable. Please refer to the CC-link association web for CC-link details.
Multiple units can be simultaneously controllable by direct, Hub, or daisy chain connection.

CC-link interface port | R4GT series | DC power supply Benchtop | Matsusada Precision
-LDe

Pulse/Ramp Sequence
For details ”Functions”.

-LGmb *1 *2

Digital Interface Port
This is Matsusada Precision's proprietary digital communication port. This interface has modular type IN and OUT ports to allow daisy-chain connection. Combined with an adapter (sold separately). Multiple power supplies can be controlled at once. Adapters for LAN, USB, RS-232C, RS-485, and GPIB are available so that you can choose a suitable communication interface. One-control operation by master/slave connection is also possible.

  • -LGmb: Digital Interface port + CO-M cable 2 meters
  • -LGmb (Mc0.15): Digital Interface port + CO-M cable 0.15 meters
  • -LGmb (Mc0.5): Digital Interface port + CO-M cable 0.5 meters
Master/Slave
Master/slave | R4GT series | DC power supply Benchtop | Matsusada Precision

If a noisy environment is expected, the -LGob optical interface port option is required.

LGob *1 *2

Optical Interface Port
This option changes the standard interfaces to a built-in optical interface port. By combining this option with an adapter for optical connection (sold separately), communication between the control device and the power supply can be controlled in an isolated state. Be sure to select this option when using the product in the following environments.

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

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

  • Noisy environments such as factories (example: when motors or coils are used near loads or power sources).
  • If this power supply and your controller (PC or PLC) cannot be installed within 2 meters.
  • When there is a possibility of arcing or output short-circuit.

To use the optical interface, you need to prepare an optical interface adapter separately.
For details, click here.

-LH

High Isolation Voltage
With an isolation voltage of ±500 Vdc, more R4GT series power supplies are available in series connection.

-LIc

Output Current Integration Function
This option provides a current integration function that displays the total charge delivered in Ampere-hours (up to 100 Ah). The integrated value is retained even when the output is off. This feature is extremely useful for managing the chemistry of plating solutions and ensuring repeatable results, as the output can be automatically shut off once a preset total charge has been supplied.

-LMi *1

Multi Digital Interface
This interface comes with LAN, USB*, and RS-485 (Multi-drop) interfaces, providing flexible connectivity for various communication environments. (Simultaneous use of interfaces is not supported.) Furthermore, an SCPI-compliant IVI driver is available for download from our website.
This driver simplifies the development of control programs using a wide variety of languages such as LabVIEW, MATLAB, Python, C#, and Visual Basic.
*The USB port conforms to the USB Test and Measurement Class (USBTMC) protocol. If your application requires compatibility with the USB Communications Device Class (USB CDC), the RS-485 port can be used as a virtual COM port by using a third-party USB to RS-485 adapter.

-LUs1 *1 *2

USB Interface Port
Digital Control via USB is enabled.

It is possible to hook 1 unit per 1 USB port equipped on your computer. If a number of USB ports equipped on the computer to be used is in lacking, use a USB hub. But there is a case that the hub is not operated correctly.

-LUs1 USB Interface port
-LZ

Handle for Carrying
It is available for all the models (getting higher by 8 mm).

-L(200V), -L(220V), -L(240V)

It is applicable to other input voltage than 120 Vac.

Note: Accuracy of the timer during sequence operation ±0.1%. Please take care of usage at long-running operations.

  1. Either one of these options is selectable
  2. For the detailed function of an optical interface, USB interface, RS-232C interface, and digital interface, please refer to the datasheet of digital controller CO/USB series.

How to Order

When placing an order, please add the option code(s) after the model name. If adding two or more options, omit the “-L” from the second and subsequent option codes, and list them in alphabetical order, with the input voltage option placed at the end.
Example: R4GT18-0.2-LDeGob(Fc10)(200V)

Accessories

Adapters for various digital interfaces

To use Matsusada Precision's digital interface, you need to prepare a digital interface adapter separately.
The following interface adapters are available according to your controller port.

  • CO-E32m: LAN Adapter
  • CO-U32m: USB Adapter
  • CO-MET2-9: RS-232C (9 pin) Adapter
  • CO-MET2-25: RS-232C (25 pin) Adapter
  • CO-MET4-25: RS-485 (25 pin) Adapter
    CO-MET2-9/CO-MET2-25/CO-MET4-25: The connector is D-sub type.
  • CO-G32m: GPIB Adapter (Scheduled for discontinuation in December 2028)
Example of communication with a digital adapter
Example of communication with a digital adapter | R4GT series | Benchtop DC Power supply | Matsusada Precision
Optical isolation adapter

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

  • CO-E32: LAN Adapter
  • USB-OPT: USB Adapter
  • CO-OPT2-9: RS-232C (9 pin) Adapter
  • CO-OPT2-25: RS-232C (25 pin) Adapter
  • CO-OPT4-25: RS-485 (25 pin) Adapter
  • CO-G32: GPIB Adapter
Example of communication with optical fiber
Example of communication with optical fiber | R4GT series | Benchtop DC Power supply | Matsusada Precision

For details, refer to CO/USB series

AC Input Cable

The R4GT series comes with one AC power cord.

Standard CABLE TYPE1 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 125 V/10 A 2.5 meters

Fixed length
-L(200V), -L(220V),
-L(240V) options		 CABLE TYPE3 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V/10 A 2.5 meters

Fixed length
Sold separately CABLE TYPE4 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V/10 A 2.5 meters

Fixed length
Application software

PSS2en series: Remote control, Test workflow design, and Data logging

PSS2en is the dedicated software that can actuate various power supplies, electronic loads, and digital controllers for power supplies manufactured by Matsusada Precision Inc. with a simple setup.
It is perfect for the aging test, the burn-in test and the withstand voltage test for electronic parts, and for the endurance test, intermittent/continuous operation test, or various simulation tests for electric components of automobiles.
For details, refer to PSS2en page.

PSS2en | Application software for power supplies and electronic loads | Matsusada Precision

Dimensions

For details, download the datasheet below.

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