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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 include several features such as Delay trigger, Memory function, and Two-mode lock function to prevent operator mistake. 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
  • 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, is 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 Two-mode lock function and acceleration rotary encoder, which accelerate the output ramp up with the speed of rotating the encoder.

Sink Current Suppression

RK series featured function to sink current, and enable to decrease the voltage quickly when turning off the output or when control the voltage down, which increase the safety of operation. In case that continuous aging test in short interval, quick voltage fall time increase the efficiency of 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 load to power supply when turning off the power supply or when decrease the output voltage.

Note: It is not possible to stabilize the output by controlling 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 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 standard preset function. No need to adjust the output when different setting, 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 purpose. "Full Lock" locks all the functions on front panel, and "Normal Lock" locks all the functions except for ON/OFF. "Full Lock" mode shall be good in case misoperation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid misoperation but secure the way for emergency stop of 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 function other than reset lock mode, and effective for purpose to avoid misoperation when controlled

Two Mode Lock Function
Normal LOCK

Lock voltage and current setting dial, and effective for purpose to avoid changing output setting by mistake or when 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 power supply to set to delay the output trigger timing. Either in case of 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 nearby sales office.
  3. Only for slave-local. In 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 case of slave-remote, output voltage and current can be set with one-control function 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

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 front panel. Contact us when you need them.

Functions

Two Features in -LDe Option

(1) Function for Pulse & Ramp and Master Follow

Output control as Next A to D are 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 rise (reduce) voltage or current slowly.
It helps sensitive electrical load not to get damaged by overshoot.

* As for ramp operation, you can select "Doth 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

It is also possible to use pulse combined with ramp action.
If a multi-set function is combined with the too, it is able to make pulse 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 values.

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)

With the function, the slave units follow the output signals at pulse and ramp actions in master/slave mode. It is useful for the slave units to output with different conditions from the master unit.

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

D. Master Follow

(2) Sweep Control Programming

Easy programming of sweep operation!

With -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

Enable digit control via LAN/USB/RS-232C/RS-485/GPIB as well as one control with Master/Slave.
To use the digital interface, you need to prepare an digital interface adapter separately. For details, click here.

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

Master/Slave

Master unit can control multiple units connected as slave. Please refer to page 05 as for “D. Master Follow”, page 04 as for “Delayed Trigger Function” and “Dual Tracking, Multiple Outputs”.

Master/slave | Benchtop DC Power Supplies | Matsusada Precision

Example of Connection and Operation

Using the same multiple units of 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 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, split operation is not available.

Specifications

For details, download the datasheet below.

Options

-LCe

Corresponding to CE marking *1

Object: Models with CE mark on Lineup.

-LCk

CC-Link interface board *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, maximum 32 units can be controllable. Please refer to CC-Link association web for CC-Link detail.

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 board *1 *2 *3

Enable digital control via LAN
HUB shall be required between RK series and your computer when control multiple RK via LAN.

If this option is taken, CE certification becomes void.

LGob

Optical interface board *2 *3

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

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

  • -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).
-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 which stop the output can be set preliminarily, it is very suitable to the application such as controlling plating solution.

-LUs1

USB interface board *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 rises 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 detail 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

Adapter for digital interface (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 | Benchtop DC Power Supplies | 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 | Benchtop DC Power Supplies | 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 | Benchtop DC Power Supplies | 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 | Benchtop DC Power Supplies | 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.

Optical isolation adapter (separately sold)

To use the digital interface, you need to prepare a digital 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 | Benchtop DC Power Supplies | 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 | Benchtop DC Power Supplies | 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

Total 32 units can be connected.

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

(B) Optical fiber cable
As of models with -LGob option, a two-meter cable is provided in each unit.
If you need a longer cable, please consult with our sales staff.

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 use environment and the area. CABLE TYPE3 and 4 correspond to CE marking.

Dimensions

For details, download the datasheet below.

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