RMX-4104 800 W to 864 W Programmable DC Power Supply
Земля RMX-4104 is a high-power, single-channel programmable DC power supply designed for automated validation, production testing, laboratory research and electronic-device development. Its compact 2U, one-sixth rack-width enclosure delivers between 800 W and 864 W, depending on the selected voltage and current configuration.
Four RMX-4104 versions are available: 20 V at 40 A, 36 V at 24 A, 60 V at 14 A and 100 V at 8 A. Engineers can therefore select the output range that best matches low-voltage, high-current devices or higher-voltage electronic systems. USB, Ethernet, RS232 and analog control interfaces support both interactive bench operation and remote automated testing.
Key Features of the RMX-4104
- Single-channel programmable DC power supply
- Four voltage and current configurations
- Maximum output power from 800 W to 864 W
- Maximum voltage up to 100 VDC
- Maximum current up to 40 A
- Constant-voltage and constant-current operation
- Compact 2U, one-sixth rack-width enclosure
- Front-panel buttons, control knob and display
- USB 2.0 remote-control interface
- Ethernet/LAN remote-control interface
- RS232 serial communication
- Analog programming and monitoring interface
- SCPI-compatible command control
- Master-slave configurations for multidevice operation
- LabVIEW Plug and Play instrument-driver support
- Suitable for rack-mounted automated test systems
RMX-4104 Models and Part Numbers
| Part Number | Voltage Range | Current Range | Maximum Power | Model Configuration |
|---|---|---|---|---|
| 786014-01 | 0 V to 20 V | 0 A to 40 A | 800 W | RMX20-40-LAN |
| 786015-01 | 0 V to 36 V | 0 A to 24 A | 864 W | RMX36-24-LAN |
| 786016-01 | 0 V to 60 V | 0 A to 14 A | 840 W | RMX60-14-LAN |
| 786017-01 | 0 V to 100 V | 0 A to 8 A | 800 W | RMX100-8-LAN |
The RMX-4104 model name alone does not identify the output range. Always verify the complete NI part number, required maximum voltage, continuous current and power rating before ordering.
RMX-4104 Technical Specifications
| Product Model | RMX-4104 |
|---|---|
| Product Type | Programmable rack-mount DC power supply |
| Number of Output Channels | 1 |
| Maximum Output Voltage | 20 V, 36 V, 60 V or 100 V, depending on configuration |
| Maximum Output Current | 40 A, 24 A, 14 A or 8 A, depending on configuration |
| Total Output Power | 800 W, 840 W or 864 W, depending on configuration |
| Output Operating Modes | Constant voltage and constant current |
| Rack Height | 2U |
| Rack Width | One-sixth rack width |
| Power Source | Internally powered |
| Computer Interfaces | Ethernet/LAN and USB 2.0 |
| Additional Interfaces | RS232 and analog control |
| Programming Protocol | SCPI-compatible commands |
| Local Control | Front-panel display, buttons and rotary control |
| Multidevice Operation | Master-slave configuration support |
| Поддержка программного обеспечения | NI RMX-410x Power Supplies LabVIEW Plug and Play driver |
| Recommended Calibration Interval | 2 years |
RMX-4104 Accessories
| Accessory | Part Number | Описание |
|---|---|---|
| IEC Power Cord | 763830-01 | U.S. AC power cord, 125 VAC, 15 A |
| IEC Power Cord | 784686-01 | China AC power cord, 250 V, 10 A |
| IEC Power Cord | 784685-01 | Korea 240 V, 10 A right-angle power cord |
| IEC Power Cord | 785626-01 | Brazil 250 V, 10 A power cord |
| IEC Power Cord | 786377-01 | Japan 125 VAC, 12 A power cord |
| IEC Power Cord | 787642-01 | Taiwan 125 VAC, 15 A power cord |
| IEC Power Cord | 763067-01 | European 240 V, 10 A right-angle power cord |
| IEC Power Cord | 763072-01 | India 250 V, 10 A power cord |
Verify the installation country, facility input voltage, connector type and current rating before selecting an AC power cord. Output cables, bus bars, fuses and fixture connections must also be sized for the selected RMX-4104 model’s maximum current.
Four Output Configurations
The RMX-4104 is available in four fixed output-range configurations. Each version provides approximately 800 W or more, but its voltage and current limits differ significantly.
The 20 V model is optimized for low-voltage, high-current loads. The 100 V model is intended for equipment that requires higher DC voltage with lower maximum current. The 36 V and 60 V versions provide intermediate combinations for industrial electronics, communications equipment and automotive component testing.
20 V, 40 A RMX-4104
Part number 786014-01 provides an output range of 0 V to 20 V and 0 A to 40 A, with a maximum output power of 800 W. This version is suitable for low-voltage devices that require substantial current.
Typical applications include power converters, high-current control electronics, computing hardware, telecommunications assemblies and vehicle electrical components. At 40 A, low-resistance cables and secure output connections are essential for minimizing voltage drop and heat generation.
36 V, 24 A RMX-4104
Part number 786015-01 provides 0 V to 36 V and 0 A to 24 A. Its maximum output power is 864 W, the highest total power rating among the four standard RMX-4104 configurations.
This version is suitable for 24 V and 28 V electronic systems, industrial controllers, actuators, motors and aerospace or automotive components requiring operating headroom above their nominal supply voltage.
60 V, 14 A RMX-4104
Part number 786016-01 provides 0 V to 60 V and 0 A to 14 A, with a maximum output power of 840 W. It offers a useful balance between voltage and current for general-purpose high-power testing.
Applications include DC-DC converter testing, industrial power electronics, communications equipment, battery-powered devices and electronic assemblies operating above conventional 24 V or 28 V supply levels.
100 V, 8 A RMX-4104
Part number 786017-01 provides an output range of 0 V to 100 V and 0 A to 8 A, with a maximum power rating of 800 W. This version is intended for applications requiring the widest voltage range in the RMX-4104 family.
Its 100 V capability supports higher-voltage DC subsystems, power-conversion equipment, industrial electronics and laboratory device characterization. Appropriate insulation, spacing and electrical protection must be used throughout the test fixture.
Constant-Voltage Operation
In constant-voltage mode, the RMX-4104 regulates the programmed voltage while allowing the load to draw current up to the configured current limit. This mode is used when the device under test requires a stable DC supply voltage.
If the load attempts to draw more than the programmed limit, the power supply transitions to constant-current operation. This protects the DUT and power supply while allowing engineers to observe overload or startup behavior.
Constant-Current Operation
In constant-current mode, the RMX-4104 regulates the output current while allowing the output voltage to vary according to the connected load. The configured voltage limit prevents the output from rising beyond the required level.
Constant-current operation is useful for component conditioning, LED testing, battery-related applications and circuits requiring a controlled current stimulus.
Compact 2U Rack-Mount Design
The RMX-4104 occupies 2U of vertical rack space and only one-sixth of the rack width. Multiple supplies can therefore be installed in a relatively small area when a test system requires several independent high-power rails.
Its compact mechanical design is particularly useful in production racks, validation laboratories and automated test systems where instrument density is important. Adequate ventilation and rack clearances must be maintained for reliable high-power operation.
Front-Panel Control
The front-panel interface includes a display, buttons and rotary control for configuring voltage, current, protection settings and communication parameters. Engineers can use the supply interactively during system development without first creating an automated program.
Local operation is also useful for fixture verification, maintenance and troubleshooting. Once the required operating values are confirmed, the same supply can be controlled remotely as part of an automated test sequence.
USB 2.0 Connectivity
The USB interface provides a straightforward connection between the RMX-4104 and a nearby computer. It is suitable for benchtop development, instrument setup and automated systems where the power supply is located close to the controller.
Before connecting through USB, install the appropriate NI software and confirm that the instrument is recognized by the operating system and VISA communication layer.
Ethernet and LAN Control
Ethernet connectivity allows the RMX-4104 to be controlled over a laboratory or production network. Users can configure network parameters such as the IP address and communicate with the instrument using supported SCPI commands.
LAN control is useful when the supply is located away from the computer, when several instruments share a network or when a centralized controller operates multiple test stations.
RS232 Serial Interface
The RS232 interface supports integration with industrial computers, embedded controllers and established test systems that use serial instrument communication.
When configuring the connection, verify the serial-port parameters and command termination settings. Communication settings on the computer must match those configured on the RMX-4104.
Analog Programming and Monitoring
The analog interface allows external signals to control or monitor power-supply operation. This is useful when the output must follow another system variable or when the test architecture uses a real-time controller rather than message-based commands.
External analog wiring should use suitable shielding and grounding. Review the applicable interface scaling and electrical limits before applying signals to the analog control connector.
SCPI Command Support
The RMX-4104 supports SCPI-compatible commands for remote configuration and measurement. SCPI control allows software to set voltage and current, enable or disable the output, query operating status and monitor supply values.
Command-based control makes the instrument suitable for integration with LabVIEW, TestStand and other programming environments capable of communicating through VISA, TCP/IP, USB or serial connections.
Master-Slave Multidevice Operation
The RMX-410x driver supports master-slave configurations for applications requiring coordinated operation across multiple power supplies. This can simplify systems containing several independent rails or power requirements exceeding the capabilities of one instrument.
Before creating a multidevice configuration, verify that the selected operating method is supported for the specific models and that the complete wiring arrangement follows the applicable power, grounding and safety requirements.
Typical RMX-4104 Applications
- Automated production testing
- Electronic device validation
- Power converter testing
- DC-DC converter development
- Automotive electronics testing
- Aerospace component testing
- Industrial controller validation
- Telecommunications equipment testing
- Battery-powered device simulation
- High-current component testing
- Power sequencing
- Research and laboratory automation
- Burn-in and reliability testing
- Rack-mounted ATE systems
Automated Production Testing
The RMX-4104 can provide controlled power to products during functional and end-of-line testing. Automated software can configure different operating voltages, apply current limits and record the power supply’s operating state for each test step.
LAN and USB connectivity allow the instrument to be integrated with measurement hardware, switching systems and test executives. Protection settings should be configured before the output is enabled to reduce the risk of damage to the DUT.
Power Converter Testing
The supply can provide input power for DC-DC converters, inverters and other power-electronic assemblies. Engineers can sweep the input voltage and monitor how the converter responds under different loads and operating conditions.
A compatible electronic load can be connected to the converter output to create a complete automated source-and-load test system. Select an RMX-4104 voltage configuration that provides sufficient headroom above the maximum intended converter input.
Automotive Electronics Testing
The 20 V and 36 V versions are suitable for many automotive electronic modules, while other configurations can support higher-voltage subsystems. Test software can reproduce supply-voltage changes, startup conditions and controlled current limits.
Applications involving fast vehicle-supply transients may require separate transient-generation equipment. The required waveform speed and voltage should be compared with the RMX-4104’s dynamic capabilities before system design.
Burn-In and Reliability Testing
The RMX-4104 can continuously power electronic assemblies during environmental, reliability and burn-in tests. Remote interfaces allow voltage, current and status information to be integrated into long-duration monitoring software.
For continuous high-power operation, verify rack airflow, ambient temperature, facility AC power and output-cable ratings. Test systems should include appropriate emergency shutdown and DUT protection.
LabVIEW Driver Support
The NI RMX-410x Power Supplies instrument driver provides functions for configuring output voltage and current, controlling output state, monitoring operating values and setting up multidevice configurations.
The LabVIEW Plug and Play driver communicates through Ethernet, USB or serial interfaces. GPIB communication is not supported by the RMX-410x LabVIEW driver.
NI-VISA Integration
NI-VISA provides the communication layer used to connect the RMX-4104 to test software through its supported computer interfaces. VISA resource names allow applications to address the instrument without implementing low-level interface communication.
Engineers can test communication using an interactive VISA utility before developing the complete application. Successful identification and a valid response to a basic query help confirm the interface configuration.
TestStand Integration
The RMX-4104 can be called from LabVIEW code modules or other supported programs within an NI TestStand sequence. This allows power-supply configuration to become part of a controlled production or validation workflow.
A test sequence can configure safe initial limits, enable the output, perform measurements, evaluate results and disable the output at the end of the test or when an error occurs.
RMX-4104 Troubleshooting
The RMX-4104 does not power on
Confirm that the facility AC source matches the instrument requirements and that the correct regional power cord is fully connected. Inspect the supply circuit, rack power distribution and applicable protective devices.
The output voltage is lower than programmed
Check whether the supply has entered constant-current mode. The connected load may be drawing more current than the configured limit. Also inspect output cables and connectors for excessive resistance or voltage drop.
The power supply enters constant-current mode unexpectedly
Verify the DUT resistance, startup current and programmed current limit. Capacitive loads and motors may draw substantial inrush current even when their steady-state current is within the expected range.
The computer cannot detect the USB connection
Check the USB cable, computer port, NI-VISA installation and RMX-410x driver. Try a direct USB connection rather than an unpowered hub and verify that the instrument interface is enabled.
The LAN connection does not work
Confirm the instrument’s IP address, subnet mask and network configuration. Verify that the computer and RMX-4104 are reachable on compatible networks and that required TCP/IP communication is not blocked.
RS232 commands receive no response
Check the serial cable type, COM port, baud rate, data format and command termination. The computer and instrument must use matching communication parameters.
The output becomes unstable
Inspect the load type, cable length, wiring inductance and external capacitance. Keep high-current wiring short and use appropriate conductor size. Confirm that the DUT is not rapidly switching between operating states.
The output cables become hot
Stop the test and verify the cable gauge, connector rating, terminal tightness and current level. High-current versions, particularly the 40 A model, require low-resistance connections designed for continuous operation at the expected load.
The instrument shuts down during high-power testing
Check rack airflow, fan operation, ambient temperature, AC input and output load. Ensure that ventilation openings are not blocked and that surrounding equipment does not recirculate hot exhaust air.
RMX-4104 Comparison with Similar Programmable Power Supplies
| Модель | Maximum Power Class | Available Voltage and Current Range | Best Suited For |
|---|---|---|---|
| RMX-4101 | Up to approximately 216 W | Up to 100 V or 10 A, depending on version | Lower-power devices and compact multirail systems |
| RMX-4102 | Up to approximately 432 W | Up to 100 V or 20 A, depending on version | Medium-power validation and production testing |
| RMX-4104 | 800 W to 864 W | Up to 100 V or 40 A, depending on version | High-power devices and rack-mounted automated testing |
| ПXI-4110 | Low-power modular supply | Multiple programmable outputs | PXI systems requiring several lower-power supply rails |
| PXI-4130 | 40 W SMU | ±20 V and ±2 A | Four-quadrant sourcing and precision current measurement |
RMX-4104 vs RMX-4102
The RMX-4104 provides approximately twice the output power of the RMX-4102. Corresponding RMX-4104 versions also provide roughly twice the maximum current at the same nominal voltage range.
Select the RMX-4104 when the DUT requires up to 40 A or more than approximately 400 W. Select the RMX-4102 when lower power is sufficient and minimizing system cost or AC power consumption is more important.
RMX-4104 vs RMX-4101
The RMX-4101 is the lowest-power member of the corresponding rack-mount supply family, while the RMX-4104 is designed for applications requiring hundreds of watts and substantially higher current.
The RMX-4101 can be more appropriate for control circuits, sensors and lower-power assemblies. The RMX-4104 is better suited to power converters, computing hardware, industrial devices and other high-power loads.
RMX-4104 vs PXI-4130
Земля PXI-4130 source measure unit combines precision sourcing, current measurement and four-quadrant operation at up to 40 W. The RMX-4104 is a unipolar programmable DC power supply providing up to 864 W.
Select the PXI-4130 when measurement sensitivity, source-and-sink operation and PXI synchronization are required. Select the RMX-4104 when the primary requirement is supplying substantially more DC power to the DUT.
Recommended Related Products
- RMX-4101 Programmable DC Power Supply
- RMX-4102 Programmable DC Power Supply
- PXI-4110 Programmable Power Supply
- PXI-4130 40 W Source Measure Unit
- PXIe-4138 Precision System SMU
- View More NI PXI and PXI Express Modules
Selecting the Correct RMX-4104 Configuration
Select part number 786014-01 when the application requires up to 40 A but no more than 20 V. Choose 786015-01 for 24 V and 28 V systems requiring up to 24 A.
Select 786016-01 when a wider 60 V range and up to 14 A are required. Choose 786017-01 for applications requiring voltage up to 100 V and current up to 8 A.
Allow sufficient voltage and current headroom for startup conditions, line variation and future test requirements. Do not select a configuration based only on total wattage because each model has a fixed maximum voltage and current.
Why Choose the RMX-4104?
- Provides as much as 864 W from one programmable output
- Offers four voltage and current configurations
- Supports current up to 40 A
- Supports voltage up to 100 VDC
- Occupies only 2U and one-sixth rack width
- Supports local and remote operation
- Includes Ethernet, USB, RS232 and analog control
- Supports SCPI-compatible automation
- Integrates with LabVIEW and NI-VISA
- Supports multidevice power-system configurations
Frequently Asked Questions
What is the RMX-4104?
The RMX-4104 is a single-channel, 2U rack-mount programmable DC power supply available in four output configurations from 20 V at 40 A to 100 V at 8 A.
What is the maximum output power?
The maximum output power depends on the version. Available ratings are 800 W, 840 W and 864 W.
What is the highest-current RMX-4104 version?
Part number 786014-01 supplies up to 40 A over an output range of 0 V to 20 V, with a maximum output power of 800 W.
What is the highest-voltage RMX-4104 version?
Part number 786017-01 supplies up to 100 V and 8 A, with a maximum output power of 800 W.
How many output channels does the RMX-4104 have?
The RMX-4104 provides one programmable DC output channel.
Which interfaces are available?
The RMX-4104 supports Ethernet/LAN, USB 2.0, RS232 and analog control interfaces.
Does the RMX-4104 support GPIB?
The NI RMX-410x LabVIEW Plug and Play driver supports Ethernet, USB and serial communication. It does not support controlling the instrument through GPIB.
Can the RMX-4104 be controlled through LabVIEW?
Yes. NI provides an RMX-410x LabVIEW Plug and Play instrument driver for configuring and monitoring supported RMX power supplies.
Can multiple RMX-4104 supplies be used together?
The RMX-410x driver supports master-slave configurations for multidevice operation. Verify the permitted electrical configuration and wiring requirements before combining supplies.
What are the RMX-4104 part numbers?
The four standard part numbers are 786014-01, 786015-01, 786016-01 и 786017-01.
Which RMX-4104 model should I order?
Select the model according to the required maximum voltage and current, not only total power. Confirm whether the application requires 20 V/40 A, 36 V/24 A, 60 V/14 A or 100 V/8 A before ordering.
Request a Quote for the RMX-4104
Contact us for current availability, lead time and project pricing for the RMX-4104 Programmable DC Power Supply. Please include the required voltage, current and NI part number in your inquiry so we can quote the correct 20 V, 36 V, 60 V or 100 V configuration.
