R4K-80 series is a high-performance programmable DC power supply. The 4-digit digital meter and high-resolution D/A, and A/D converters are added newly for more precise settings and reading. Needless to say, the innovative compact size, variable range feature, and high operability are remaining the same as the conventional RK-80 series.
The series is the best DC power supply for a variety of applications from laboratory experiments to automated line productions.
Features and Benefits
Compact and light-weight space-saving design
Very quiet due to the adopting naturally-cooled system without a cooling fan
Wide output range R4K-80L:16 V/10 A, R4K-80: 36 V/5 A , R4K-80M: 110 V/1.3 A, R4K-80H: 320 V/0.5 A
Unique low noise power conversion technology for research application
Power factor correction and universal input
Multiple units operation with master/slave and digital interface
Useful New Five Additional Functions
4-digit digital meter (output voltage and current)
High-resolution D/A, A/D converter integrated
As one click of the rotary encoder is one count, the fine setting is possible.
Digital interface as standard function
The digital interface shall make data logging and automatic measurement easier.
* Conversion adapters suitable for RS-232C, RS-485 or GPIB is separately required.
Various waveforms with pulse and ramp sequence function at will
With pulse/ramp sequence function (optional), various test patterns can be set without a computer.
Output voltage and output current can be set speedily.
When setting output voltage and output current by the rotary encoder on the front panel, every time a fine switch is pressed, the setting digit on the digital display will be switched. In the case, of setting a small output value or changing the setting value widely, the setting can be done speedily. (Fine switch cannot be used when output value is set remotely.)
New user-friendly functions
Useful new feature of variable setting range
Set voltage/current value within 80 W, then turn on output
* Not automatic range change which can output 80 W all the time. Resetting is required.
New and useful functions and stylish front panel design!
Quick access to functions needed
No.1Preset setting is automatically displayed when output is off.
No.2 OCP is added for more safety operation.
No.3 Quick lock with one touch action. Two selectable lock options.
Memorize three voltage and current settings in addition to the standard preset values. There is no need to adjust the output when different settings, and convenient function for production inspection process or testing which require frequent data taking.
Memory (a)Memory (b)Memory (c)
Sink Current Suppression
When supplying power to loads with capacities like batteries and capacitors, 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.
Note:
Reverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when the load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)
Delay Trigger Function
Only one R4K-80 is available when -LUs1, -LGob, or -LEt option is selected.
When turning OUTPUT ON/OFF, you can start or stop the output operation with some delay. The function is available not only for a single power supply but also for multiple units of Matsusada Precision DC power supplies in the digital interface *1 which are individually set values of output voltage/current in addition to a single power supply. *2
R4K-36 series, RK-80 series, RK series, and REK series For details, contact our sales office. They can be connected to up to 16 units.
Can be connected to up to 16 units.
Only for slave-local
In the case of the 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.
* +1 and +8 can be set respectively in 0.0 s to 99.9 s.
Two-level Lock Function
Two-level lock is selectable: "Full Lock" for locking all the switch operations and "Standard lock" for locking except for the output ON/OFF.
"Full lock" is used to prevent all erroneous operations, and "Standard lock" is for readily applying the emergency
stop along with misoperation prevention, which can ensure a "safe" operation.
(An emergency stop by the power switch is available in both types of lockings. )
Full LOCK
Locks all the switch operations except canceling the lock function.
It is especially suited to prevent misoperations in the remote control.
Standard LOCK
Locks the voltage/current setting switches.
It can prevent mistakenly changing the output setting in local control and immediately applying an emergency stop.
Remote Function
External output ON/OFF
Sink current 1 mA
* +S is common. So, the external control voltage shall be inputted with +S as a reference. Otherwise, it can cause failure.
Remote sensing
The function ensures the prevention of stability deterioration, which could be caused by the voltage drop (V0-VL) due to the resistance (R) of the output wire or contact resistance.
Digital Interface Port (sold separately)
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.
Status output Fault/Output/OVP/OCP/OT/ACF/reversible sense connection/Interlock
Maximum 16 units digital control (-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 (100.0%)
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 (100.0%)
voltage current value mode (maximum overvoltage/overcurrent protection value)
* Minimum value of each model is the same as the minimum display of the front panel meter.
Dual Tracking, Multiple Outputs
Dual tracking control enables both positive and negative outputs simultaneously in master/slave control. In addition, using the slave local mode, the dual tracking operation can consist of multiple outputs. The positive and negative output voltages (+V and -V) in dual output will output in synchronization with turning on the power of the master machine.
* The function is unavailable for -LUs1 and -LEt options.
Dual trackingMultiple outputs
Example of Connection and Operation
Using the same multiple units of the R4K-80 series, the output voltage and output current can be increased by connecting the outputs in series or parallel.
Local control or digital master/slave control is recommended for control.
The external output ON/OFF terminal LS- is connected to the + output, so do not connect it to the commons of other power supplies.
Series operation
The total output voltage is up to 250 V. The output voltage exceeding 250 V is unavailable in a series connection. The output current will be the smallest value.
Parallel operation
Use the same value for voltage setting in parallel connection. The output current is the sum of each current. In order to prevent damage, set the OVP level of all the power supplies to the maximum.
Split operation
+output and -output are available.
Two Features in -LDe Option
(1) Function for Pulse/Ramp and Master Follow
A. Pulse
Sequential operation is possible by using voltage and current set on each memory a, b, and c in combination with a multi-set function. Not only continuous operation, but also it is possible to specify the times. It is best to fit 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 the time of memory a, b, c, and off to 0.0.
ta, tb, tc, and toff can be set to 0.0 s, 1.0 s to 99.9 h, respectively
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.
* 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 to 0 to 999 s, respectively
C. Pulse + Ramp
It is also possible to use pulse combined with ramp action. If the multi-set function is combined with the too, it is able to make pulse action by using voltage or current set on memory a, b, and c. Not only continuous operation, but also it is possible to specify the times. It is useful in various aspects as it is possible to increase/decrease voltage or current slowly up to 3 set values.
Range of 0 to 999 s for t1 to t4 and range of 0.0 s, 1.0 s to 99.9 h for ta to tc and toff can be set respectively.
D. Master Follow
Pulse sequence actions at master/slave and output signal to slave units at ramp action are transmitted. By this function, it is possible to make slave units output on different output conditions from the master unit.
* The master follow function is only available with the standard interface.
Note; Accuracy of the timer at sequence action ±0.5%. Please take care usage at long-running.
(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.
Example of usage that sweeps from constant value to undo it after attainment
LAN Interface port
Enable digital control via LAN.
HUB shall be required between R4K-80 and the computer when controlling multiple R4K-80.
This option, digital interface is not attached. For more information on the digital interface, refer to the CO/USB series datasheet.
Master/Slave function is unavailable.
-LGob *
Optical Interface port
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 output short-circuit.
-LH
High isolation voltage
With an isolation voltage by ±1kV, more R4K-80 series power supplies are available in series connection.
-LIc
Output current accumulation function
This option accumulates the output current and displays the value (up to 100 Ah). The accumulated value is stored even when the output is off. You can set the maximum accumulated output current in advance to stop the output. It is very suitable for applications such as controlling Electroplating solutions.
• Please consider the location of usage. High humidity environment can be the cause of failure and corrosion.
-LUs1 *
USB Interface port
Enable digital control via USB.
This option, digital interface is not attached. For more information on the digital interface, refer to the CO/USB series datasheet.
Master/Slave function is unavailable.
-L(Mc0.5), -L(Mc0.15) *
Changing of communications cable
The CO-M cable length can be selected from 0.15 meters or 0.5 meters. Select one of the two types above.
* Selecting each individual option simultaneously in -LEt, -LGob, -LUs1, and -L(Mc0.5) or -L(Mc0.15)
How to Order
When ordering, add Option No. to Model No. in alphabetical order followed by the input voltage. <Example> R4K-80-LDeGobHIc, R4K-80L-LDeHIcUs1
Accessory
Adapter for digital interface
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.
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-G32m: GPIB adapter (Discontinued in December 2028)
To use the optical interface, you need to prepare an optical interface adapter separately. The following interface adapters are available according to the communication method of 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 (Discontinued in December 2028)
Select an appropriate AC input cable according to your operating environment and region. If you use the R4K-80 series in Europe, please be sure to contact our sales representatives.
Accessory Kit
Various accessories are available for convenient use of the unit.
Stand
The stand is useful to use as a single unit.
Binder
For the applications which require two to six units combination. Dual, triple, and quad-multiple operations are possible.
* A Cooling fan is needed for more than three units combination.
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.
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