• RK-80 series | DC power supply Benchtop | Matsusada Precision
  • RK-80 series | DC power supply Benchtop | Matsusada Precision

Ultra compact DC programmable power supply

  • Max Voltage: 16V to 320V
  • Max Current: 0.5A to 10A
  • Max Power: 80 W
  • Slim 1.4-inch body

Overwhelming Compact Size and Light Weight Design

RK-80 series is a high performance DC programmable power supply. The 3-digit digital meter is added newly. Needless to say, the innovative compact size, variable range feature and high operability are realized. RK-80 series is the suitable DC power supply for a variety of applications from laboratory experiment to line productions.

Features and Benefits

  • Compact and light-weight space-saving design
  • Very quiet due to the adopting naturally-cooled system without cooling fan
  • Wide output range
    RK-80L: 16 V/10 A, RK-80: 36 V/5 A, RK-80M: 110 V/1.3 A, RK-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 (option)

New user-friendly functions

New and useful functions and stylish front panel design!

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.

graph

Useful NEW 3 Additional Functions

1. Output voltage and output current can be set speedily. NEW
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 remotely.)
2. When output is OFF, the preset value can be displayed automatically by operating rotary encoder on the front panel.
3. Various protections such as over voltage/current protection (OVP, OCP) are equipped as standard.

Models

Model Output Ripple *1 Minimum setting unit *2 AC input
voltage [V] current [A] Power [W] [mVrms] [mArms] Output voltage Output current Voltage Current [typ.] Power factor
[typ.]
100 V 240 V
RK-80L 0 to 16 0 to 10 80 5 10 0.1 V 0.01 A 85 Vac to 264 Vac
50/60 Hz
single phase
1.1 A 0.5 A 0.99 *3
RK-80 0 to 36 0 to 5 80 5 4 0.1 V 0.01 A 1.1 A 0.5 A 0.99 *3
RK-80M 0 to 110 0 to 1.3 80 10 2 1 V 0.01 A 1.1 A 0.5 A 0.99 *3
RK-80H 0 to 320 0 to 0.5 80 20 1 1 V 1 mA 1.1 A 0.5 A 0.99 *3
  1. The ripple applies from 10% to 100% of the rated output.
  2. The value at local control
  3. Maximum output @115 Vac input

Functions

Multi Setting Function

Memorize three voltage and current settings in addition to the standard preset values.

There is no need to adjust the output when different setting, and convenient function for production inspection process or testing which require frequent data taking.

Multi Setting Function
Memory (a)
Multi Setting Function memory (a)
Memory (b)
Multi Setting Function memory (b)
Memory (c)
Multi Setting Function memory (c)

Delay Trigger Function

(Only one RK80 is available when -LUs1, -LGob, or -LRmf 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 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

Master/slave is available only for the models with -LGmb option.

  1. R4K-36 series, R4K-80 series, RK series and REK series
    For details, contact our sales office. They can be connected up to 16 units.
  2. 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.
Delay Trigger Function

* +1 and +8 can be set respectively in 0.0 s to 99.9 s

Two Mode Lock Function

Two modes can be selected; "Full Lock" which locks all front panel operations, "Standard Lock" which locks all operation except for OUTPUT ON/OFF.

"Full Lock" mode shall be good in case mis-operation have to be completely avoided, and "Standard 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.

Full LOCK

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.

Normal LOCK

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 load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)
Sink Current/Sink Current Prevention Function

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 as for connection details.

Dual Tracking

Dual Tracking

Multiple Outputs

Multiple Outputs

Remote Function

Remote switch ON/OFF

Remote switch ON/OFF
Output Relay Open collector
ON SHORT VCE ≤ 0.4 V
OFF OPEN VCE ≥ 2 V

Sink current 1 mA

* +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)

Remote sensing

Appearance

function
  1. Output voltage and OVP setting display
  2. Output current and OCP setting display
    (RK-80H: mA display)
  3. Remote programming display:
    ON: Remote controlling voltage/current
  4. Output display:
    Light up when output is on.
  5. OUTPUT ON/OFF switch:
    Using OUTPUT ON/OFF and resetting the protection functions
  6. FINE switch:
    To shift the digit of a setting value of output voltage/current.
  7. Monitor terminal
  8. Constant voltage operation mode display
  9. Constant current operation mode display
  10. PRESET switch
  11. OVP/OCP switch
  12. LOCK switch
  13. Output voltage and OVP setting dial
  14. Output current and OCP setting dial
  15. Power ON/OFF switch:
    This has priority over all operations for safety reason.
  16. LS switch (remote switch)
  17. +Sense
  18. Output terminal
  19. -Sense
  20. AC input terminal

Specifications

For details, download the datasheet below.

Options

-LGmb: Digital interface board *1 *2

Enable digit control via LAN/USB/RS-232C/RS-485/GPIB as well as one control with Master/Slave.

  • -LGmb: Digital interface + modular cable 2 meters length
  • -LGmb (Mc0.15): Digital interface + modular cable 0.15 meters length
  • -LGmb (Mc0.5): Digital interface + modular cable 0.5 meters length

Adapters for connecting digital interface board (sold separately)

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.

CO-E32m: Adapter for LAN
Total 16 units can be connected to one CO-E32m.
LAN cable is not provided.
CO-E32
CO-U32m: Adapter for USB
Total 16 units can be connected to one CO-U32m.
USB cable is not provided.
CO-U32m
CO-MET2-9: Adapter for RS-232C (9 pin)
Total 16 units can be connected to each CO-MET2-9.
CO-MET2-9
CO-MET2-25: Adapter for RS-232C (25 pin)
Total 16 units can be connected to each CO-MET2-25.
CO-MET2-25
CO-MET4-25: Adapter for RS-485 (25 pin)
Total 16 units can be connected to each CO-MET4-25.
CO-MET4-25
CO-G32m: Adapter for GPIB
Total 16 units can be connected to one CO-G32m.
GPIB cable is not provided.
CO-G32

For details, refer to CO/USB series datasheet.

-LGmb Digital interface board
(A) CO-M cable
A two-meter cable is provided in each unit without interface option. If you need a longer cable, please consult with our sales staff.

Master/slave *3

up to 16 units operation with master/slave...up to 16 units
When noisy environment is presumed, the following -LGob option (optical interface) is required.

-LGob: Optical Interface Board *1 *2

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 for connecting optical interface board (sold separately)

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: Adapter for LAN
Total 32 units can be connected to one CO-E32.
LAN cable is not provided.
CO-E32
USB-OPT: Adapter for USB
Total 32 units can be connected to one USB-OPT.
USB cable is not provided.
CO-U32
CO-OPT2-9: Adapter for RS-232C (9 pin)
Total 32 units can be connected to each CO-OPT2-9.
CO-OPT2-9
CO-OPT2-25: Adapter for RS-232C (25 pin)
Total 32 units can be connected to each CO-OPT2-25.
CO-OPT2-25
CO-OPT4-25: Adapter for RS-485 (25 pin)
Total 32 units can be connected to each CO-OPT4-25.
CO-OPT4-25
CO-G32: Adapter for GPIB
Total 32 units can be connected to one CO-G32. GPIB cable is not provided.
CO-G32

For details, refer to CO/USB series datasheet.

-LGob  Optical Interface Board

(B) Optical fiber cable

-LRmf: Remote multi function *1 *5

Output control
-LRmf  Remote multi function
Vout, Iout Vcon, Icon R
0 to MAX 0 Vdc to approx. 10 Vdc 0 kΩ to approx. 10 kΩ

At the time of the remote control, it performs "operation to change three ranges" as follows.

Model Switch
number
Range Rated output voltage Rated output current
RK-80L 1 High 16 V 5 A
2 Middle 10 V 8 V
3 Low 8 V 10 A
RK-80 1 High 36 V 2.2 A
2 Middle 27 V 3 A
3 Low 16 V 5 A
RK-80M 1 High 110 V 0.7 A
2 Middle 80 V 1 A
3 Low 60 V 1.3 A
RK-80H 1 High 320 V 200 mA
2 Middle 250 V 300 mA
3 Low 160 V 500 mA

-LUs1: USB Interface Board *1 *2 *5

When controlling several RK-80 power supplies via USB, a USB hub will be required between the computer and RK-80 power supplies.

-LUs1  USB Interface Board
  1. These options can be chosen only one either.
  2. For detailed specification of USB and digital interface, please refer date sheet of CO series.
  3. Delay trigger function can be set individually at the time of master-slave.
    Furthermore, all functions (except for OUTPUT) of master-slave can be also canceled by the change of Remote/Local, and the preset value of output voltage/current can be set individually.
  4. +S is common. So external control voltage shall be input with +S as reference. Otherwise it can cause failure.
  5. The master/slave function is not provided.

How to Order

When ordering, add Option No. to Model No. in alphabetical order followed by the input voltage.
Example:
RK-80-LGmb (Mc0.5)
RK-80L-LGob (Fc20)

Accessories

Accessory Kit

Various accessories are available for convenient use of the unit.

Stand

For one unit operation...

Stand
Stand

Binder

For the applications which require two to six units combination. Dual, triple and quad multiple operation is possible.

* Cooling fan is needed for more than three units combination

Binder
Binder

Rack mount holder [RMO series]

  • 10 Units/one rack holder, and can be placed in a cabinet. Easy to take one unit out.
  • Best suitable for a system operation.
  • With fan unit.
Rack mount holder

* Power supply is not included in the accessories.

Cable

AC Input Cable

Standard
CABLE TYPE 1
125 V/10 A
  • CABLE TYPE 1
  • CABLE TYPE 1
Sold separately
CABLE TYPE 3
250 V/10 A
  • CABLE TYPE 3
  • CABLE TYPE 3
Sold separately
CABLE TYPE 4
250 V/10 A
  • CABLE TYPE 4
  • CABLE TYPE 4

Dimensions

For details, download the datasheet below.

Series Operation and Parallel Operation

RK-80 power supply of same model number can be connected in series or parallel to increase output voltage or current. In that case, local control or the control in the digital master/slave is recommended.

Because the common of the outside input/output control connector (TB1) is connected to the positive output, please do not connect common more than two.

Series operation

Total output voltage is to be up to 250 V. Therefore for models with output voltage of over 250 V, series operation cannot be conducted. Output current is to be the smallest current of those.

Series operation

Parallel operation

Please keep all the settings of voltage the same. Output current will be the summation of each current. Please keep OVP level of power supply maximum to prevent any damage.

Parallel operation

Split operation

+output and –output are available.

Split operation

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