Compact, High-Power, Multi-function, Programmable DC Power Supply with Superior Operability
The REK series is a line of high-power, versatile, programmable DC power supplies, delivering up to 2.5 kW in a compact 1U (1.73 inches/44 mm) form factor, up to 5.5 kW by 2U (3.5 inches/89 mm), and up to 15.3 kW by 3U (5.24 inches/133 mm).
REK series is designed to achieve an excellent power factor as good as 0.99 *1, its high efficiency helps to reduce environmental burden.
In addition, the series has a digital interface *2 such as LAN and USB as standard equipment and offers flexibility to easily support various automated measurements and large-scale system construction in production equipment.
We also have a lineup of REKJ series (0 to 650 V, 0.77 kW to 0.81 kW) in a half-rack size of 8.35 inches/212 mm wide with similar functions to the REK series. (Optional to be LXI compatible, some models to CE compatible)
In single-phase input models.
Adaptors or options will be needed additionally.
FEATURES AND BENEFITS
Compact and high power 15 kW
Low-noise switching design, ideal for demanding R&D applications.
The power factor correction (PFC) circuit and universal input allow for operation almost anywhere in the world.
Various operations by connecting multiple power supplies, such as master-slave, is possible.
REK adopts large 4-digit monitor display for both voltage and current, which contributes to precise monitoring with better recognition.
Operability and safety are improved with new features of two-mode lock function and acceleration rotary encoder, which accelerates the output ramp up with the speed of rotating the encoder.
The following output control functions A to D are provided.
A. Pulse (Step) Sequence Function
The Sequence function lets you generate complex voltage and current patterns by automatically cycling through settings stored in memories a, b, and c. You can run the sequence continuously or for a specified number of cycles. By setting the duration of any step (a, b, c, 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.
The parameters ta, tb, tc, and toff can be set to 0.0 s, or from 1.0 s to 99.9 h.
B. Ramp Function
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.
The t1 and t2 parameters can be set from 0 s to 999 s.
C. Combined Sequence and Ramp
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, and c. The entire waveform can be run continuously or for a pre-set number of cycles, making it a powerful tool for various testing scenarios.
t1 and t2 can be set from 0 s to 999 s, while ta, tb, tc, and toff can be set to 0.0 s or from 1.0 s to 99.9 h.
D. 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.
The Ramp sequence can be selected from [both set voltage and current], [only set voltage], and [only set current].
The master follow function is only available with the standard interface.
Note: 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.
This function provides reverse current protection with sink current suppression, preventing current from flowing back to the power supply from capacitive loads, such as batteries or large capacitors. This is crucial for protecting the unit when the output is turned off or the voltage is lowered.
NOTE
It is not possible to stabilize the output by controlling the back current. In case of a load that has inverse voltage or overrated voltage, such as an inductive load or a regenerative motor, protect the power supply by adding a dummy resistor or diode to prevent back current.
Multi-Setting Memory
Store and recall up to three distinct voltage and current settings. This feature streamlines repetitive testing and production inspection processes.
No need to adjust the output when different setting, and convenient function for production inspection process or testing which require frequent data taking.
Two Mode Lock Function
Function to select two different lock modes for two different purposes."Full Lock" locks all the functions on the front panel, and "Normal Lock" locks all the functions except for the ON/OFF switch. "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".
(In both modes, an emergency stop is possible with the Power Switch.)
Full LOCK
Lock all the functions other than reset lock mode. This mode is ideal for completely preventing any operational errors.
Normal LOCK
Lock voltage and current setting dial. This mode is good for purpose to avoid changing output settings by mistake or when an easy emergency stop is required.
Delay Trigger Function
In case the -LUs1, -LEt, or -LGob option is selected, only one unit of the REK/REKJ series can be used.
Function to delay the OUTPUT ON/OFF time. It is possible to use in case a single unit of the REK/REKJ series is used, and also when connecting several Matsusada Precision power supplies *1 using a master-slave connection terminal*2 and output voltage/output current are set individually, delay trigger function can be used.*3
R4K-36 series, R4K-80 series, RK-80 series, RK series, TB series and RKT series.
A detailed datasheet for each model is available. Please contact the nearby sales office.
Can be connected up to 16 pieces.
Only for slave-local. In the case of slave remote control, the 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.
* t1 to T8 can be set in the range 0.0 to 99.9 s.
Dual Tracking, Multiple Outputs
Dual tracking control, which enables both positive and negative outputs simultaneously in master-slave operation, is possible. Multiple outputs and various versatile operations are also possible by combining the above dual tracking control and the 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.
As for dual tracking control, models at output voltage exceeding 250 V are not available with the function.
Dual Tracking
Multiple Outputs
Digital Control Function
Control Function
Output ON/OFF setting
Display of various Status (fault/output/OVP/OCP/OTP/ACF/reverse sense
connection/interlock)
Digital Control Max. 16 units
(-LGob option models: Max. 32 units)
Package Control Multiple Units Hooked
Write Function
Setting Output Voltage/Setting Output Current
Percent Mode, Voltage or Current Value Mode
Setting OVP/Setting OCP
Percent Mode, Voltage or Current Value Mode
Read Function
Measured Output Voltage/Measured Output Current
Percent Mode, Voltage or Current Value Mode
Setting Output Voltage/Setting Output Current
Percent Mode, Voltage or Current Value Mode
Setting OVP/Setting OCP
Percent Mode, Voltage or Current Value Mode
Note: Minimum setting unit for each model is one count of the indicator.
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.
(A) Modular cable (CO-M cable)
As for 1U and 2U models, this function is not available when the -LGob, -LUs1, or -LEt option is chosen.
External output ON/OFF
Output can be turned ON/OFF by relay or TTL signal.
Logic of OUTPUT can be made reverse.
Remote sensing
Prevents voltage drop-down (VO-VL) due to resistance (R) or deterioration of stability by contact resistance (Max compensation 0.5 V)
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 control (Voltage, Current, Overvoltage protection, Overcurrent protection)
Output monitor (Voltage, Current)
Status output
Specifications
Input voltage
100 to 240 Vac, 50/60 Hz, Single-phase
200 to 230 Vac, 50/60 Hz, Three-phase
200 to 240 Vac, 50/60 Hz, Single-phase
200 to 240 Vac, 50/60 Hz, Three-phase
380 to 400 Vac, 50/60 Hz, Three-phase (Option)
380 to 415 Vac, 50/60 Hz, Three-phase (Option)
480 Vac, 50/60 Hz, Three-phase (Option)
Output voltage control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc or external 10kΩ potentiometer
[Digital remote] Command
Output current control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc or external 10kΩ potentiometer
[Digital remote] Command
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 an output short-circuit.
-LMi *
Multi-digital interface port
This interface comes standard 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.
-L(Mc0.5)/ -L(Mc0.15) *
Communication cable extension
The length of CO-M cable will be 0.5 meters long 0.15 meters long. (You can choose only one.)
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 parentheses option placed at the end. Example: REKJ6-130-LDeMi(Mc0.5), REK100-36-LDeGob(Fc20)(1P), REK500-11-LDeMi(400V), (Alphabetical, AC input numeral order)
Accessories
Input cable
REK series
Sold separately 1.2 kW to 2.5 kW model 2.7 kW to 3.6 kW single-phase input model
CABLE TYPE5
300 V/25 A For Japan or North America
2.5 meters
Sold separately 1.75 kW to 2.5 kW three-phase input model 2.7 kW to 5.5 kW model
CABLE TYPE6
600 V/25 A For Japan
2.5 meters
Sold separately 6.75 kW to 15.3 kW model
CABLE TYPE7
600 V/75 A For Japan
10 meters
REKJ series
Standard for 100 V input, 3-pin plug
CABLE TYPE8
125 V/125 A For Japan or North America
2.5 meters Fixed length
Sold separately for 200 V input, flying lead
CABLE TYPE3
250 V/10 A For Europe
2.5 meters Fixed length
Sold separately for 200 V input, 2-pin plug
CABLE TYPE4
250 V/10 A For Europe
2.5 meters Fixed length
Use an AC cable that is suitable for your usage environment and region.
Please note that other than AC input cables that correspond to the following are to be prepared by customers.
To order 2.5 meters or longer, add the length (meters) to the model No. <Example> 5 meters : CABLE TYPE 5 (5)
Optical isolation adapter
To use the optical interface, you need to prepare a digital 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 (Scheduled for discontinuation in December 2028)
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)
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, as well as for the endurance test, intermittent/continuous operation test, or various simulation tests for automobile electric components.
On this website, we provide only the latest versions of information and instruction manuals for our products. Therefore, the newest versions of manuals on the website may differ from those that came with products you purchased in the past.
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