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

Compact and High Power Programmable DC Power Supply

  • Max Voltage: 6V to 800V
  • Max Current: 0.6A to 180A
  • Max Power: 385W to 1200W
  • Multiple functions
  • CE marking
    (For some models with option)

A 2.76-inch (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 benchtop, 400 Watt, 800 Watt, 1200 Watt high power output programmable dc 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/Sink Current Prevention Function

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 Multi Setting Function

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.
go to Operations

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

New useful functions

In addition to standard functions, these features offer many different usage and use in wide variety of applications.

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

above output control, between A to D is available.

A. Pulse Sequence

Using the stored voltage and current setting in each memory of a, b and c and multi set function, sequence operation is possible. The setting of repetition to say nothing of a continuous driving can be set. Various different operations, such as repetition of memory a and b or b ,c and off, are possible by setting the set time of memory a, b, c, and/or off to be 0.0. Thus, it makes this model suitable for evaluation test or other applications.

A. Pulse Sequence

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

B. Ramp

This function controls the ramping up and down the voltage and current to the set value (or from set voltage and current value to 0V/0A). It is convenient to increase (decrease) the voltage and current value slowly.

Note: The Ramp sequence can be selected from [both set voltage and current], [only set voltage], and [only set current].

B. Ramp

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

C. Combination of Pulse and Ramp Sequence

Features of pulse sequence operation and ramp sequence operation can be combined for more convenient operation. In addition, by adding multi set function, sequence operation can be operated using stored voltage and current settings in each memory. The setting of repetition to say nothing of a continuous driving can be set. For example it is possible to slowly ramp up and down the voltage and current to the three different settings, and so, it is useful on various scenes.

C. Combination of Pulse and Ramp Sequence

t1, t2, t3 and t4 can be set with range 0 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

When the pulse sequence operation and the ramp work master-slave, the output signal to the slave unit is transmitted. The slave unit can be output in an output status different from the master unit.

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.

Standard functions

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
  • Logic of output can be reversed.

Remote Control

Remote/Local change
Remote/Local change
Mode External relay TTL
Remote Short Low
Local Open High

Each mode of voltage, current, OVP, OCP can be switched by relay or TTL signal.

Output control
Output control CV,CC
Vout, Iout Control Voltage R *
0 to Max
  • 0 to approx. 10 Vdc
  • Input imp. 500 kΩ
 0 to approx. 10 kΩ

* Possible to change 10 kW to 0 W for fail safe

Output control OVP, OCP
Vout, Iout Control Voltage
Max
x5 to 110%
  • 0 to approx. 10 Vdc
  • Input imp. 20 kΩ
Output Monitor
Output Monitor
Output
0 to Max		 0 to approx. 10 Vdc
Output imp. 1 kΩ		 0 to approx. 10 Vdc
Output imp. 1 kΩ
Status Output
Status Output
  • OUTPUT: ON at OUTPUT status
  • FLT: ON when fault *
  • CV, CC: ON at CV or CC status

* On when OVP, OCP, OTP, ACF, reverse connection of sensing or interlock (LD) status.

Common is floating in open collector output of common. Withstand voltage 30 Vdc, sink current 5 mA or less.

Please have the remote connector (TB1) isolated in order to prevent the damages to power supply in case it is connected to an electrical load which gives out high energy pulse output.

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 | Benchtop DC Power Supplies | 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 | 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
For details, refer to CO/USB series datasheet.
(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/ACF/reversible sense connection/interlock)
  • Maximum 16 units(-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 (100.00%)
  • voltage current value mode (maximum overvoltage/overcurrent 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 (100.00%)
  • voltage current value mode (maximum overvoltage/overcurrent protection value)

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

Operation example

With RK series of the same model, output voltage and current can be increased by connecting power supplies 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

Sum of output is up to 250 V.
It is impossible to series operation for one exceeds 250 V in output volt.
Output current is of the min, one of power supply among them.

Parallel operation

Parallel operation

Make all setting voltage same value. Output current is sum of each current. In addition, make OVP level for all power supplies maximum to prevent damage.

Split operation

Split operation

Possible to output on positive (+) or negative (-)

Specifications

For details, download the datasheet below.

Options

-LCe: Corresponding to CE marking *1

Object: Models with CE mark on Lineup.

NEW -LCk: CC-Link Interface Board *1

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.

  • -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 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
For details, refer to CO/USB series datasheet.
(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.

-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)

CABLE

[Standard]
RK400 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]
RK800 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]
RK400 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]
RK400 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

Dimensions

For details, download the datasheet below.

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