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

COMPACT/HIGH POWER PROGRAMMABLE DC POWER SUPPLY

  • Voltage range: 6V to 800V
  • Current: 0.6A to 180A
  • Power: 385 to 1200W
  • Multiple functions
    • CE marking

A 2.76 inches (70 mm) wide, this 400 W compact size

Low noise, multiple functions, and digital communication are highlights of supply which can be used from R&D to a variety of applications. All this convenience in a small DC power supply.

RK series is a small, programmable desktop 400 W, 800 W, 1200 W high output power supply.
Our low noise switching method includes several features such as a Delay trigger, Memory function, and Two-mode lock function to prevent operator mistakes. All this enables the user to operate the supply for a wide range of applications.
Moreover, the sequence function enables the user to control the supply without a laptop.
The digital interface is also standard, with LAN, USB, RS-232C, RS-485, or GPIB control, allowing the operator to use the system in many different production environments.*

(Only for some models with option are applied to CE.)
* Adaptors or options will be needed additionally.

Features and Benefits

  • Compact and high power 400 W, 800 W, 1200 W
  • The optional sequence movement is available without a PC
  • Batch control up to 32-unit is possible via optical communication
  • Ideal for research and development with low noise switching method.
  • PFC circuit and universal input would not select the place of operation.
  • Various operations by connecting multiple power supplies, such as master/slave, are possible.
  • 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.
  • Operability and safety are improved with new features of the Two-mode lock function and acceleration rotary encoder, which accelerate the output ramp-up with the speed of rotating the encoder.

Models

CE mark: They are the models which can correspond to CE marking with -LCe option.

Model Output Ripple (rms) Safety standards
Voltage [V] Current [A] Power [W] Voltage Current *1
RK6-65 0 to 6 V 0 to 65 A 390 W 8 mV 130 mA
RK6-130 0 to 130 A 780 W 8 mV 260 mA
RK6-180 0 to 180 A 1080 W 15 mV 360 mA
RK10-40 0 to 10 V 0 to 40 A 400 W 10 mV 80 mA
RK10-80 0 to 80 A 800 W 10 mV 160 mA
RK10-120 0 to 120 A 1200 W 15 mV 240 mA
RK15-26 0 to 15 V 0 to 26 A 390 W 10 mV 60 mA
RK15-54 0 to 54 A 810 W 10 mV 110 mA
RK15-80 0 to 80 A 1200 W 15 mV 160 mA
RK20-20 0 to 20 V 0 to 20 A 400 W 8 mV 32 mA
RK20-40 0 to 40 A 800 W 8 mV 70 mA
RK20-60 0 to 60 A 1200 W 15 mV 96 mA
RK30-13 0 to 30 V 0 to 13 A 390 W 4 mV 10 mA
RK30-27 0 to 27 A 810 W 6 mV 25 mA CE mark
RK30-40 0 to 40 A 1200 W 15 mV 30 mA
RK36-11 0 to 36 V 0 to 11 A 396 W 4 mV 10 mA
RK36-22 0 to 22 A 792 W 6 mV 20 mA CE mark
RK36-33 0 to 33 A 1188 W 15 mV 30 mA
RK45-9 0 to 45 V 0 to 9 A 405 W 4 mV 8 mA
RK45-18 0 to 18 A 810 W 8 mV 15 mA CE mark
RK45-27 0 to 27 A 1215 W 18 mV 20 mA
RK60-6.6 0 to 60 V 0 to 6.6 A 396 W 10 mV 15 mA
RK60-13.5 0 to 13.5 A 810 W 12 mV 25 mA CE mark
RK60-20 0 to 20 A 1200 W 18 mV 20 mA
RK80-5 0 to 80 V 0 to 5 A 400 W 10 mV 8 mA
RK80-10 0 to 10 A 800 W 15 mV 10 mA
RK80-15 0 to 15 A 1200 W 30 mV 20 mA
RK120-3.3 0 to 120 V 0 to 3.3 A 396 W 15 mV 6 mA
RK120-6.6 0 to 6.6 A 792 W 20 mV 5 mA
RK120-10 0 to 10 A 1200 W 20 mV 8 mA
RK160-2.5 0 to 160 V 0 to 2.5 A 400 W 20 mV 4 mA
RK160-5 0 to 5 A 800 W 30 mV 10 mA
RK160-7.5 0 to 7.5 A 1200 W 30 mV 20 mA
RK250-1.6 0 to 250 V 0 to 1.6 A 400 W 25 mV 3 mA
RK250-3.2 0 to 3.2 A 800 W 38 mV 5 mA
RK250-4.8 0 to 4.8 A 1200 W 27 mV 5 mA
RK350-1.1 0 to 350 V*2 0 to 1.1 A 385 W 24 mV 2 mA
RK350-1.5 0 to 1.5 A 525 W 35 mV 5 mA
RK350-2.2 0 to 2.2 A 770 W 40 mV 5 mA
RK350-3.2 0 to 3.2 A 1120 W 48 mV 5 mA
RK400-2 0 to 400 V*2 0 to 2 A 800 W 40 mV 5 mA
RK500-0.8 0 to 500 V*2 0 to 0.8 A 400 W 20 mV 3 mA
RK500-0.9 0 to 0.9 A 450 W 20 mV 5 mA
RK500-1.6 0 to 1.6 A 800 W 30 mV 5 mV
RK500-2.4 0 to 2.4 A 1200 W 40 mV 10 mA
RK650-0.6 0 to 650 V*2 0 to 0.6 A 390 W 22 mV 5 mA
RK650-0.8 0 to 0.8 A 520 W 30 mV 4 mA
RK650-1.2 0 to 1.2 A 780 W 80 mV 4 mA
RK650-1.8 0 to 1.8 A 1170 W 100 mV 5 mA
RK800-1 0 to 800 V*2 0 to 1 A 800 W 100 mV 5 mA
  1. At 10% to 100% of rated output voltage and rated output current.
  2. Models of 350 V and more have no output monitor terminals on the front panel. Contact us when you need them.

Functions

Sink Current Suppression

RK series featured function to sink current, and enables to decrease the voltage quickly when turning off the output or when controlling the voltage down, which increases the safety of operation. In the case of continuous aging tests in short intervals, quick voltage fall time increases the efficiency of the process. On the contrary by using sink current prevention function, it is possible to prevent voltage drop on the load by decreasing the current flow from the load to the power supply when turning off the power supply or when decreasing the output voltage.

Note: It is not possible to stabilize the output by controlling the back current. In case of load which has inverse voltage or over rated voltage, such as inductive load or regenerative motor, protect the power supply by adding a dummy resister or diode to prevent back current.

Sink Current Suppression | RK series | DC power supply Benchtop | Matsusada Precision

Multi Setting Function

Function to memorize three different voltage and current settings in addition to the standard preset function. No need to adjust the output when different settings, and convenient function for production inspection process or testing which require frequent data taking.

Multi Setting Function | RK series | DC power supply Benchtop | Matsusada Precision

Two-mode Lock Function

Function to select two different lock functions for two different purposes. "Full Lock" locks all the functions on the front panel, and "Normal Lock" locks all the functions except for ON/OFF. "Full Lock" mode shall be good in case misoperation has to be completely avoided, and "Normal Lock" mode shall be good in case to avoid misoperation but secure the way for emergency stop of the power supply. You can select the best mode according to your level of "Security".

(Each modes, emergency stop is possible with power switch.)

Full LOCK

Lock all the functions other than reset lock mode, and effective for the purpose to avoid misoperation when controlled

Two-Mode Lock Function
Normal LOCK

Lock voltage and current setting dial, and effective for the purpose to avoid changing output setting by mistake or when an easy emergency stop is required.

Normal LOCK

Delay Trigger Function

Delay Trigger Function

* t1 to t 8 can be set in the range 0.0 s to 99.9 s.

This function enables the power supply to be set to delay the output trigger timing. Either in the case of a single unit of RK series power supply or in case of multiple power supplies in Master/slave connection *1, it is possible to use this feature among multiple DC power supplies *2 having individually different output voltage/current setting *3

  1. Can be connected up to 16 pieces.
  2. R4K-36 series, R4K-80 series, RK-80 series, RKT series, TB series and REK series. Detail datasheet for each model is available. Please contact the nearby sales office.
  3. Only for slave-local. In the case of slave remote control, exact same model of power supply needs to be used. Also, in the case of slave-local, each output voltage and current can be set individually. In the case of slave-remote, output voltage, and current can be set with a one-control function in which each slave unit follows the master unit setting.

Dual Tracking, Multiple Outputs

Dual tracking control, which enables both positive and negative outputs simultaneously in master-slave operation, is possible. Multi outputs and various versatile operations are also possible by combining above dual tracking control and slave local mode. Positive and negative output (+V, -V) of dual tracking control and set output voltage of slave local mode can be output simultaneously by turning on the master unit.

Dual tracking
Dual Tracking
Multiple outputs
Multiple Outputs

Two Features in -LDe Option

(1) Function for Pulse & Ramp and Master Follow

Output control as Next A to D is possible.

A. Pulse

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 best fit to evaluation tests for products as various operations, like a repeat of a and b only or a 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 respectively in 0.0s, 1.0s to 99.9h.

B. Ramp

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

* As for ramp operation, you can select "Both of set voltage and current", "Voltage setting only", or "current setting only".

B. Ramp

t1 and t2 can be set respectively in 0.0s, 0.1s to 999s.

C. Pulse + Ramp

Pulse and ramp controls can also be combined. In addition, it can be combined with the multi-set function. Therefore, Sequence operation is possible using the voltage and current values set in the "a", "b", and "c" memories. Repeated and continuous operation, as well as the number of times, can be set. The power supply itself alone can be used to slowly and repeatedly increase or decrease voltage and current values up to three set values, making it useful in a variety of applications.

C. Pulse Sequence + Ramp

Range of 0.0s, 0.1s to 999s for t1 to t4 and range of 0.0s, 1.0s to 99.9h for ta to tc and toff can be set respectively.

D. Master Follow (Tracking)

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 equipments to enable interlocked operation. The master and slave can be set to different modes of operation, allowing for complex testing.

* The master follow function is only available with the standard interface.

D. Master Follow

Note: (1) This function cannot be used in conjunction with the delay trigger function. (2) Time accuracy in sequence operation is ±0.5%. Take care when using the product in long-term running operations.

(2) Sweep Control Programming

Easy programming of sweep operation!

With the -LDe option, the available sweep commands are adapted by setting the arrival time and arrival conditions (voltage/current). Since there is no need to set commands that are repeated step by step, it is easier to create new programs and change conditions, saving a great deal of operation time. It also contributes to securing time for development, research, etc.

For details, download the datasheet below.

Sink Current Suppression | RK series | DC power supply Benchtop | Matsusada Precision

External Analog Control

External output ON/OFF
Output can be turned ON/OFF by relay or TTL signal. Logic of OUTPUT can be made reverse.
Remote/Local change
As for the output voltage control, output current control, overvoltage protection, and overcurrent protection, the remote/local mode can be individually switched by relay or TTL signal.
Output monitor
(Voltage, Current)
Output control
(Voltage, Current, Overvoltage protection, Overcurrent protection)
Status output

Digital Interface

This interface is Matsusada Precision's proprietary dedicated 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.

Master/Slave

Master unit can control multiple units connected as slaves. Please click “D. Master Follow”, “Delayed Trigger Function”, “Dual Tracking, Multiple Outputs”.

Master/slave | Benchtop DC Power Supplies | Matsusada Precision

It has to hook with each same model in the same series in master/slave. Master/slave function can only be effective with a standard digital interface.

When noisy environment is presumed, the following -LGob option (optical interface port) is required.

Example of Connection and Operation

Using the same multiple units of the RK series, the output voltage and output current can be increased by connecting the outputs in series or parallel.
Control must be set on each individual unit. Do not connect together COMMON of 2 units or more as the COMMON of connector for external input and output control (TB1) is connected with output.

Series operation

Series operation

The total output voltage is up to 250 V. The output voltage exceeding 250 V is unavailable in a series connection. The output current will be the smallest value.

Parallel operation

Parallel operation

Use the same value for voltage setting in parallel connection. The output current is the sum of each current. In order to prevent damage, set the OVP level of all the power supplies to the maximum.

Split operation

Split operation

+output and –output are available. With the output voltage exceeding 250 V, the split operation is not available.

Specifications

For details, download the datasheet below.

Options

-LCe

Corresponding to CE marking *1
Object: Models with CE mark "MODELS".

-LCk

CC-Link interface port *1 NEW
CC-Link master unit such as PLC can control power supplies with CC-Link compatible with CC-Link ver1.10, possible to operate as CC-Link device station. One unit occupies 2 stations, 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.
-LDe

Pulse/Ramp sequence, Master follow function
go to Pulse/Ramp sequence, Master follow function (-LDe option)

-LEt

LAN interface port *1 *2 *3
Enable digital control via LAN
HUB shall be required between the RK series and your computer when controlling multiple RK via LAN.

If this option is taken, CE certification becomes void.

LGob

Optical interface port *2 *3
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 port (-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.
-LIc

Output current accumulation function *4
Accumulate the output current and display its value (up to 100 Ah). The accumulated value is stored even when output is off. Because the accumulated value that stops the output can be set preliminarily, it is very suitable for the application, such as controlling the plating solution.

-LUs1

USB interface port *2 *3
Enable digital control via USB

When controlling several RK series DC power supplies via USB, a USB hub will be required between the computer and DC power supplies.

Corresponding OS: Microsoft Windows XP/Vista/7/8/8.1/10
All can correspond to both the 32-bit version and the 64-bit version.

(Microsoft and Windows are registered trademarks of Microsoft Corporation.)

-LZ

The handle for carrying *1
It can attach with all the models. (Height will increase by 8 mm.)
If this option is taken, CE certification becomes void.

-L(Mc0.5), -L(Mc0.15)

Communication cable extension *2
The length of CO-M cable will be 0.5-meter long 0.15-meter long. (You can choose only either.)

-L(SCPI)

SCPI command
Enable control via SCPI command.

  1. Please ask to our sales office about the update status of the CE marking acquisition. -LCe option can not be selected with -LCk, -LMi, -LEt or -LZ option.
  2. These options cannot be selected together. Only one of each can be selected.
  3. Please see the CO series datasheet for details of digital interface function.
  4. Please consider the location of usage. Environment humid and corrosive gas occurs typified by plating line can cause failure.

How to Order

When ordering, add Option No to Model No.
Example:RK30-27-LCeDeGob(Fc5)(SCPI), RK650-1.8-LDeZ(Mc0.5)(SCPI)

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 (Discontinued in December 2028)
Example of communication with a digital adapter
Example of communication with a digital adapter | RK series | Benchtop DC Power supply | Matsusada Precision
For details, refer to CO/USB series.
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 to optical interface adapter
  • USB-OPT: USB to optical interface adapter
  • CO-OPT2-9: RS-232C (9 pin) to optical interface adapter
  • CO-OPT2-25: RS-232C (25 pin) to optical interface adapter
  • CO-OPT4-25: RS-485 (25 pin) to optical interface adapter
  • CO-G32: GPIB to optical interface adapter
Example of communication with optical fiber
Example of communication with optical fiber | RK series | Benchtop DC Power supply | Matsusada Precision
For details, refer to CO/USB series.
Ac Input Cables
Standard
400 W Models		 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
Standard
800 W Models		 CABLE TYPE8 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 125 V/125 A 2.5 meters
Fixed length
Standard
RK1200 W Models		 CABLE TYPE5 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 300 V/25 A 2.5 meters
Sold separately
400 W and 800 W Models		 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
400 W and 800 W Models		 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
Sold separately
400 W and 800 W Models		 CABLE TYPE13 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V/15 A 2.5 meters

Please use the AC cable suitable for the environment and the area. CABLE TYPE 3 and 4 correspond to CE marking.

Dimensions

For details, download the datasheet below.

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