Benchtop DC Power Supplies RK series

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.

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.

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

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.

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

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.

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".

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.

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.

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.

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”.

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

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.

-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 RK series and your computer when control multiple RK via LAN.

If this option is taken, CE certification becomes void.

-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 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.

Accessories

Ac Input Cables

[Standard] 400 W Models	CABLE TYPE1			125 V / 10 A	2.5 meters Fixed length
[Standard] 800 W Models	CABLE TYPE8			125 V / 125 A	2.5 meters Fixed length
[Standard] RK1200 W Models	CABLE TYPE5			300 V / 25 A	2.5 meters
[Sold separately] 400 W and 800 W Models	CABLE TYPE3			250 V / 10 A	2.5 meters Fixed length
[Sold separately] 400 W and 800 W Models	CABLE TYPE4			250 V / 10 A	2.5 meters Fixed length
[Sold separately] 400 W and 800 W Models	CABLE TYPE13			250 V / 15 A	2.5 meters

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

RK series Datasheet

Date: 2024-07-12 rev.22
PDF (2,040 KB)

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DC POWER SUPPLIES SELECTION GUIDE

Date: 2023-12-06 rev.00
PDF (1,202 KB)

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How to Use DC Power Supplies

Date: 2024-03-05 rev. 08
PDF (1,467 KB)

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RK/REK/REKJ series Basic Instruction Manual

Date: 2022-7-8 rev.0.5
PDF (445 KB)

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RK/REK/REKJ series Instruction Manual

Date: 2022-6-22 rev.2.0
PDF (2,942 KB)

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RK series USB Driver

Date: 2023-08-23 rev1.7.5
ZIP (6,617 KB)

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RK/REK/R4G series USB Driver (LMi option guide)

Date: 2020-07-02 rev0.0
PDF (152 KB)

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RK series Outline Drawing (DXF, PDF)

Date: 2024-07-24
ZIP (546 KB)

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