Bidirectional High-Capacity
DC power supplies

For progressive

PXB Series

electric applications

Our goal was to create a bidirectional power supply
that could meet “X” various requirements.

Ultra-compact: 20 kW in a single 3U size frame.
It can handle not only high voltages of 1500V but also has both power and regenerative modes.
Guarantees optimal operation at any stage of research, development, and manufacturing.

Bidirectional High-Capacity DC Power SupplyPXB Series

Condenses a 20 kW large-capacity output into a 3U-size chassis. Not only handling high voltages of 1500V, but also capable of both power and regeneration in both directions in a single unit.

We provide a new power supply test environment for electrical and electronic equipment that is becoming increasingly high-powered. In addition, a variety of analog, digital, and communication interfaces are provided for optimal operation at any stage of research, development, and manufacturing! A new generation of bidirectional DC power supplies that support the progression of advanced technologies.

High power density

high-power & compact
Condenses a 20 kW large-capacity output into a 3U-size chassis.

Bidirectional output

A single unit handles both power and regeneration.
For test applications such as inverters with increasing capacity.

1500V

Maximum voltage: 1500V high voltage compatible.

Selectable power input

Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Features

Output power range 2.25 to 3 times mains-powered operation

Output power range 2.25 to 3 times mains-powered operation Mains-powered power supply with a wide range of operating ranges and combinations of voltage and current settings. If the voltage of the connected DUT is lower than the voltage setting of the PXB series, current flows from the PXB series to the DUT. If the voltage of the connected DUT is higher than the voltage setting of the PXB series, current flows from the DUT to the PXB series.

Achieves high-speed rise and fall times

Achieves high-speed rise and fall times Achieves a rise/fall time of 10 ms, which is several tens of times faster than conventional switching power supplies. Enabling high-speed power fluctuation testing that cannot be handled by ordinary DC power supplies.

Highly stable operation with high resistance to capacitive loads

Highly stable operation with high resistance to capacitive loads Designed for highly stable operation, without oscillation or overshoot even when a load with a large capacitive component is connected.
Slew rate and response can be varied to match the characteristics of the connected load, suppressing oscillation and overshoot.

Optimized for different purposes and applications, with selectable response speeds

Optimized for different purposes and applications, with selectable response speeds The required power supply response time varies depending on the test conditions and load specifications. The response speed of the PXB Series power supply can be changed to suit different applications.

Up to 10 units can be operated in parallel, achieving 200 kW^※

Up to 10 units can be operated in parallel, achieving 200 kW Including master machine, up to 10 units (200 kW) can be operated in parallel. Connection is with one-control parallel operation, and the panel of the master machine can control and display the entire system. With the automatic recognition function, the need for complicated settings is eliminated, allowing the construction of high-capacity systems.
* Parallel operation is possible between models with different input rated voltages. Please contact us if you wish to operate more than 10 units in parallel.

Sequence function

Preset operations can be run continuously. Total of 30 programs, and up to 10,000 steps can be created for all programs. Programs stored in the unit’s memory, and data can be exported to a USB memory stick from the front panel.

Pulse function / Sign function

“Pulse” operation can be set, which repeatedly executes a binary setting, or “sine” operation, changing the current in a sinusoidal manner.

Regenerative function (on-site regeneration)

When power is regenerated to the main unit from an inverter or battery, the load power is converted to reusable power and regenerated to the AC LINE. This can contribute to reducing the amount of heat exhaust and saving energy.

Selectable power input

Full output at rated power regardless of input voltage. Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Equipped with touch panel display

By pressing or swiping a finger on the display, on-screen items can be selected, or numerical values set. The display is pressure-sensitive and can be operated even with gloves.

Output power range 2.25 to 3 times mains-powered operation

Mains-powered power supply with a wide range of operating ranges and combinations of voltage and current settings. If the voltage of the connected DUT is lower than the voltage setting of the PXB series, current flows from the PXB series to the DUT. If the voltage of the connected DUT is higher than the voltage setting of the PXB series, current flows from the DUT to the PXB series.

Achieves high-speed rise and fall times

Achieves a rise/fall time of 10 ms, which is several tens of times faster than conventional switching power supplies. Enabling high-speed power fluctuation testing that cannot be handled by ordinary DC power supplies.

Highly stable operation with high resistance to capacitive loads

Designed for highly stable operation, without oscillation or overshoot even when a load with a large capacitive component is connected.
Slew rate and response can be varied to match the characteristics of the connected load, suppressing oscillation and overshoot.

Optimized for different purposes and applications, with selectable response speeds

The required power supply response time varies depending on the test conditions and load specifications. The response speed of the PXB Series power supply can be changed to suit different applications.

Up to 10 units can be operated in parallel, achieving 200 kW^※

Including master machine, up to 10 units (200 kW) can be operated in parallel. Connection is with one-control parallel operation, and the panel of the master machine can control and display the entire system. With the automatic recognition function, the need for complicated settings is eliminated, allowing the construction of high-capacity systems.
* Parallel operation is possible between models with different input rated voltages.Please contact us if you wish to operate more than 10 units in parallel.

Sequence function

Pulse function / Sign function

“Pulse” operation can be set, which repeatedly executes a binary setting, or “sine” operation, changing the current in a sinusoidal manner.

Regenerative function (on-site regeneration)

Selectable power input

Full output at rated power regardless of input voltage. Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Touch panel display

By pressing or swiping a finger on the display, on-screen items can be selected, or numerical values set. The display is pressure-sensitive and can be operated even with gloves.

SEAM mode

Equipped with SEAM mode allowing current to flow in both directions without changing voltage values. Suitable for charging and discharging storage batteries. Can suppress current overshoots and undershoots which may often occur during operation mode switching after charge/ discharge.

Variable internal resistance function

Function can change the output voltage value in constant voltage operation, according to the output current value based on the set resistance value. Simple simulation of Internal resistance of rechargeable batteries and wire harnesses etc.

Range of settings	PXB20K-500	0 Ω〜 5250m Ω
	PXB20K-1000	0 Ω〜 21000m Ω
	PXB20K-1500	0 Ω〜 63000m Ω

I-V characteristic function

By registering multiple arbitrary points on the I-V characteristics, arbitrary I-V characteristics can be set for each CC and CV operation mode. Arbitrary points can be registered from 3 to 100, making it possible to simulate the I-V characteristics of rechargeable batteries and other devices.

Reliable and solid performance even under high temperatures

Solid performance under operating temperatures of 0°C to 50°C. Exhibits full performance even in environments with severe ambient temperatures, such as when installed in equipment.

Safety Protection Function

OVP (Over voltage protection)
UVP (Under voltage protection)
WDOG (Communication error protection)
OPP (Over power protection)
OCP (Over current protection)
EXT LOW (External input alarm detection)

Priority operation mode

Mode of operation can be set, as constant voltage (CV), constant current (CC), or constant power (CP), when output is turned on. Overshoot can be prevented by setting CC mode priority when batteries, power supplies, etc. are connected.

External control function

The EXT CONT connector on the rear panel can be used to control the PXB series with external devices. The general-purpose digital input and output terminals can be assigned any function, facilitating system construction in combination with other measurement devices.
Digital I/O standard for both NPN and PNP type PLCs. Analog I/O is isolated from output terminals as standard, allowing safe analog control from PLC.

Terminal No.	Method	I/O	Name	Description
1	Digital	O	OUT Ch.1	General-purpose output terminal
2	Digital	O	OUT Ch.2	General-purpose output terminal
3	Digital	O	OUT Ch.3	General-purpose output terminal
4	-	-	DO COM	Digital output common
5	-	-	DI COM	Digital input common
6	Digital	I	IN Ch.1	General-purpose input terminal
7	Digital	I	IN Ch.2	General-purpose input terminal
8	Digital	I	IN Ch.3	General-purpose input terminal
9	-	O	+12 V OUT	12 V reference voltage available for digital input
10	-	-	-	Not used
11	-	-	A COM	Analog signal common
12	Analog	O	VMON	Voltage monitor
13	Analog	O	IMON	Current monitor
14	Digital	O	OUT Ch.4	General-purpose output terminal
15	Digital	O	OUT Ch.5	General-purpose output terminal
16	Digital	O	OUT Ch.6	General-purpose output terminal
17	-	-	DO COM	Digital output common
18	-	-	DI COM	Digital input common
19	Digital	I	IN Ch.4	General-purpose input terminal
20	Digital	I	IN Ch.5	General-purpose input terminal
21	Digital	I	H ALARM IN	HIGH alarm EXT HIGH occurrence
22	-	-	12 V COM	12 V reference voltage common
23	-	-	A COM	Analog signal common
24	Analog	I	EXT CV	Voltage control in the constant voltage mode
25	Analog	I	EXT CC/CP	Current control in the constant current / power modes

Method	Function
Analog input	Setting of voltage and current values
Analog output	Monitoring of voltage and current values
General-purpose isolated digital input (Ch.1 to ch.5) *Photocoupler isolated input (Supports both current sink and source)	Output ON/OFF from DC OUTPUT terminal LOW alarm generation / deactivation Start / Stop totalizer measurement Reset totalized value Measurement trigger input Preset memory recall
Digital input (Ch.6)	HIGH alarm generation (Fixed)
General-purpose isolated digital output (Ch.1 to ch.6) *Semiconductor relay output	Monitor output status of DC OUTPUT terminal Power-on monitor Alarm monitoring Operating mode monitoring Preset memory monitoring

General-purpose isolated digital input terminals are available from Ch.1 to Ch.5. Any setting value from the items listed on the right can be selected.

General-purpose isolated digital output terminals are available from Ch.1 to Ch.6. Any setting value from the items listed on the right can be selected.