Palmtop size Variable DC Power Supply
- Voltage range: 2V to 40V
- Current: 0.1A to 4A
- Power: 0.2W to 36W
- Excellent quietness
Ultra Compact, programmable DC Power Supply
R4K-36 series are ultra-compact, high-performance DC power supplies which achieve sufficient output of 36 W in the "palm-sized".
As the models can set and output the current at the 0.1 mA increment, the power supply is best for applications which require precise control of current such as evaluation testing of LED or OLED light.
All models include the four-digit output voltage/current meter and digital interfaces as standard. These strong points allow you to use R4K-36 for the usage such as various quality tests and the production line of electronic components.
We pursue usability !
- Compact and light-weight space saving design
- Unique low noise power conversion technology for research application
- Multiple units operation with master/slave and digital interface
- Very quiet due to the adopting natural air-cooling system without cooling fan
Suitable for applications requiring the quietness - Four-digit meter
- High resolution D/A, A/D converter integrated
- Digital Interface is also available.
- Programmable waveform with pulse and ramp sequence function without external signal
- Output voltage and output current can be set speedily.
When setting output voltage and output current by rotary encoder on front panel, every time fine switch is pressed, setting digit on digital display will be switched. In case, setting small output value or change setting value widely, setting can be done speedily. (Fine switch cannot be used when output value is set by remote controlling.)
Ultra compact !
Models
| Model | Output | Ripple *1(rms) | Minimum setting unit *2 | AC input | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | Current | Power | Voltage | Current | Voltage | Current | Voltage | Current [typ.] | ||
| 115 V | 230 V *3 | |||||||||
| R4K2-0.1 | 0 to 2 V | 0 to 0.1 A | 0.2 W | 1 mV | 1 mA | 1 mV | 0.1 mA | 115 V ±10% *2 230 V ±10% 50/60 Hz single phase |
0.1 A | 0.05 A |
| R4K36-0.1 | 0 to 36 V | 0 to 0.1 A | 3.6 W | 2 mV | 1 mA | 10 mV | 0.1 mA | 0.5 A | 0.25 A | |
| R4K8-3 | 0 to 8 V | 0 to 3 A | 24 W | 4 mV | 4 mA | 1 mV | 1 mA | 1 A | 0.5 A | |
| R4K6-4 | 0 to 6 V | 0 to 4 A | 24 W | 5 mV | 8 mA | 1 mV | 1 mA | 1 A | 0.5 A | |
| R4K40-0.6 | 0 to 40 V | 0 to 0.6 A | 24 W | 3 mV | 1 mA | 10 mV | 0.1 mA | 1 A | 0.5 A | |
| R4K36-1 | 0 to 36 V | 0 to 1 A | 36 W | 5 mV | 5 mA | 10 mV | 1 mA | 1 A | 0.5 A | |
| R4K18-2 | 0 to 18 V | 0 to 2 A | 36 W | 5 mV | 5 mA | 10 mV | 1 mA | 1 A | 0.5 A | |
- The ripple applies from 10% to 100% of the rated output.
- The minimum setting unit of the instrument panel. With remote controlling, more detailed settings are available. Go to "Various Digital Control Functions".
- -L(230V) option
Functions
Multi Setting Function
Sink Current Suppression
- Note
- IReverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)
Delay Trigger Function
(When -LUs1 or -LRmf option is selected, only one unit of R4K-36 series can be used.)
Two Mode Lock Function
Function to select two different lock functions for two different purposes. "Full Lock" locks all the function on front panel, and "Normal Lock" locks all the function 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".
(In both 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.
Remote Control Functions
Remote switch ON/OFF
* +S is common. So external control voltage shall be input with +S as reference. Otherwise it can cause failure.
Remote sensing
Compensate the voltage drop (V0-VL) due to resistance of output lead or drop of stability by contact resistance.
(maximum 0.5 V)
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 |
Output ON/OFF setting | |
|---|---|---|
| Status output (fault/output/OVP/OCP/OT/ACF/reversible sense connection) |
||
| Maximum 16 units digital control | ||
| Collective control function for multiple units | ||
| 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.
Dual Tracking, Multiple Outputs
Dual tracking control enables both positive and negative outputs simultaneously in master/slave operation.
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 for connection details.
Dual Tracking
Multiple Outputs
Operations
In R4K-36 series, the output voltage and current can be increased by connecting the same models in series or parallel operation.
As to the control, the use of local control or digital master/slave control is recommended.
The common of the external input control connector is connected to +output of the power supply.
So, do not connect it to any common of other power supplies.
Series operation
The total output voltage can be up to 250 V. Series operation is not available for the total output voltage exceeding 250 V. In that case, the output current comes to the one of the smallest power supply.
Parallel operation
Please use the same voltage setting for parallel operation. The output current comes to the sum of each current. In order to prevent damages, please ensure to have the maximum level of OVP of the power supply.
Split operation
Positive and negative outputs are available respectively.
Specifications
Options
-LDe: Pulse/Ramp sequence, Master follow function
above output control, between A to D is available.
A. Pulse Sequence
According to the combination with Multi Setting Function, the sequence operation is available by using the voltage and current settings stored respectively in Memory a, b, and c. Also, setting the number of operations is provided, let alone continuous operation. As the set time of Memory a, b, c or off is set to 0.0, the output control has a great variety of operations such as continuous operation in both of Memory a and b or among Memory b, c, and off. Thus, the function is ideal especially for product evaluation tests.
ta, tb, tc, and toff can be set respectively with the range of 0.0 second, 1.0 seconds to 99.9 hours.
B. Ramp
In this function, the ramp operation is available within the voltage and current settings (or up to 0 V/0 A starting the said values). It is excellent for increasing or decreasing the voltage and current values gradually. The function can also effectively reduce the load damage caused by overshooting.
* As for the lamp operation, you can select "Both setting voltage and current", "voltage setting only", or "current setting only".
t1 and t2 can be set range of 0.0 second to 999 seconds.
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 for various scenes.
t1 to t4 can be set range of 0 to 999 seconds.
ta, tb, tc and toff can be set range of 0.0 second to 99.9 hours.
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. (Master follow function cannot be used with -LUs1 option.)
* The master follow function is only available with the standard interface.
Note: The operation accuracy of the timer when sequencing is 0.5%. Be careful when you use it by the long-term running operation.
-LH: Higher isolation voltage
This option make the isolation voltage to be ±1 kV, which enable extended capability of series operation.
-LIc: Output current accumulation function
Accumulate the output current and display its value (up to 100 Ah). Accumulated value is stored even when output is off. Also, accumulated value which stop the output can be set preliminarily, it is very suitable to the application such as controlling plating solution.
* Please consider the location of usage. High humidity environment can be the cause of failure and corrosion.
-LRmf: Remote multi function *1 *3
It is possible to control output voltage and output current by external voltage or external resistance.
+S is common. So external control voltage shall be input with +S as reference.
-LRmf option
| Vout, Iout | Vcon, Icon | R |
|---|---|---|
| 0 to MAX | 0 to approx. 10 Vdc | 0 to approx. 10 kΩ |
-LUs1: USB interface board *1 *2 *3
Enable digital control with USB. One power supply can be connected per one USB port which computer equipped. In case the number of USB port of the computer is not enough, use USB HUB. However, it may not work correctly, depending on USB HUB.
OS: Microsoft Windows XP/Vista/7/8/10 (Both 32-bit version and 64-bit version are available.)
Microsoft Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
-L(Mc0.5): Communication cable length 0.5-meter *3
Change the length of communication cable 2-meter to 0.5-meter.
-L(Mc0.15): Communication cable length 0.15-meter *3
Change the length of communication cable 2-meter to 0.15-meter.
-L(200V): 200 Vac ±10% input
-L(230V): 230 Vac ±10% input
Refer Lineup for input current.
- When these options are selected, standard digital interface will not be equipped. Also, these options cannot be equipped together.
- For detailed specification of USB and digital interface, please refer data sheet of CO/USB series.
- -LUs1 or -LRmf option cannot be equipped together with -L(Mc0.15) and -L(Mc0.5) option.
How to Order
- When ordering, add Option No. to Model No. in alphabetical order followed by numerical order.
-
- Example:
- R4K36-1-LDcHIcUs1(200V)
- R4K18-2LDeH(Mc0.5)(200V)
Accessories
AC Input Cable
| [Standard] | CABLE TYPE1 |  |
 |
125 V / 10 A |
|---|---|---|---|---|
| [Standard] For -L(200V) option |
CABLE TYPE3 | |
 |
250 V / 10 A |
| [Sold separately] | CABLE TYPE4 | |
 |
250 V / 10 A |
Dimensions
Download
-
R4K-36 series Datasheet
Date: 2022-3-4 rev.15
PDF (5,981 KB)
-
How to Use DC Power Supplies
Date: 2022-03-18 rev. 04
PDF (1,487 KB)
-
R4K-36 series Instruction Manual
PDF(3,351KB)
-
R4K-36 series Basic Instruction Manual
Last updated: February 13, 2020 rev.0.0
PDF (247 KB)
-
R4K-36 series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 KB)
The account registration is necessary for downloading
-
R4K-36 series Datasheet
Date: 2022-3-4 rev.15
PDF (5,981 KB)
-
How to Use DC Power Supplies
Date: 2022-03-18 rev. 04
PDF (1,487 KB)
-
R4K-36 series Instruction Manual
PDF(3,351KB)
-
R4K-36 series Basic Instruction Manual
Last updated: February 13, 2020 rev.0.0
PDF (247 KB)
-
R4K-36 series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 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.
