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
(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, programmable desktop 400 Watt, 800 Watt, 1200 Watt 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.
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.
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 mis-operation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid mis-operation 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 mis-operation when controlled
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.
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
- Can be connected up to 16 pieces.
- 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.
- Only for slave-local. In case of slave remote control, exact same model of power supply need to be used. Also, in 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
Multiple Outputs
Models
: 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 | |
||
| 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 | |
||
| 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 | |
||
| 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 | |
||
| 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 | ||
- At 10% to 100% of rated output voltage and rated output current.
- 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.
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].
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.
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.
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
| 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
| 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
| Vout, Iout | Control Voltage | R * |
|---|---|---|
| 0 to Max |
|
0 to approx. 10 kΩ |
* Possible to change 10 kW to 0 W for fail safe
| Vout, Iout | Control Voltage |
|---|---|
| Max x5 to 110% |
|
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
- 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
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 USB: CO-U32m
Total 16 units can be connected to one CO-U32m.
USB cable is not provided.
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 GPIB: CO-G32m
Total 16 units can be connected to one CO-G32m.
GPIB cable is not provided.
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 |
|
|
|---|---|---|
| Write function | Output voltage setting/Output current setting |
|
| OVP setting/OCP setting |
|
|
| Reading function | Output voltage reading/Output current reading |
|
| Output voltage setting/Output current setting |
|
|
| OVP setting/OCP setting |
|
|
* Minimum value of each model is same as minimum display of 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
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
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
Possible to output on positive (+) or negative (-)
Specifications
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 unit can be controllable. Please refer to CC-Link association web for CC-Link detail.
-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 advance prevention of erroneous operation 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 an 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 USB: USB-OPT
Total 32 units can be connected to one USB-OPT.
USB cable is not provided.
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 GPIB: CO-G32
Total 32 units can be connected to one CO-G32.
GPIB cable is not provided.
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.
- 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.
- These options cannot be selected together. Only one of each can be selected.
- Please see the CO series datasheet for detail of digital interface function.
- 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 |  |
 |
125 V / 10 A | 2.5 meters Fixed length |
|---|---|---|---|---|---|
| [Standard] RK800 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] RK400 W and 800 W Models |
CABLE TYPE3 | |
 |
250 V / 10 A | 2.5 meters Fixed length |
| [Sold separately] RK400 W and 800 W Models |
CABLE TYPE4 | |
 |
250 V / 10 A | 2.5 meters Fixed length |
Dimensions
Download
-
RK series Datasheet
Date: 2022-3-15 rev.19
PDF (8,293 KB)
-
How to Use DC Power Supplies
Date: 2022-03-18 rev. 04
PDF (1,487 KB)
-
RK/REK/REKJ series Basic Instruction Manual
Date: 2021-11-24 rev. 0.4
PDF (419 KB)
-
RK/REK/REKJ series Instruction Manual
Date: 2020-05-08 rev 1.4
PDF (2,942 KB)
-
RK/REK/REKJ series Interface Manual
Date: 2020-01-17 rev.0.5
PDF (819 KB)
-
RK series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 KB)
-
RK/REK/R4G series USB Driver (LMi option guide)
Date: 2020-07-02 rev0.0
PDF (152 KB)
The account registration is necessary for downloading
-
RK series Datasheet
Date: 2022-3-15 rev.19
PDF (8,293 KB)
-
How to Use DC Power Supplies
Date: 2022-03-18 rev. 04
PDF (1,487 KB)
-
RK/REK/REKJ series Basic Instruction Manual
Date: 2021-11-24 rev. 0.4
PDF (419 KB)
-
RK/REK/REKJ series Instruction Manual
Date: 2020-05-08 rev 1.4
PDF (2,942 KB)
-
RK/REK/REKJ series Interface Manual
Date: 2020-01-17 rev.0.5
PDF (819 KB)
-
RK series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 KB)
-
RK/REK/R4G series USB Driver (LMi option guide)
Date: 2020-07-02 rev0.0
PDF (152 KB)
In this website, we provide only the latest version of information including instruction manuals as of our products. Therefore, the newest versions of manuals on the website might be not same as the ones of products you purchased in the past.
