mPower 300 DC Autoranging
Programmable Power Supply ↑

Marway’s lab quality mPower DC power supply includes many advanced capabilities usually found only in systems costing much more. A cornerstone feature is the autoranging dc output. The benefit of autoranging allows a single modestly-powered supply to cover test cases of higher voltage or current compared to conventional power supplies. Autoranging saves capital costs and rack space, and even simplifies test setup. (Learn more about autoranging.)

The 300 Series is a cost-effective power supply with core mPower autoranging and programmability. It foregoes the function generator of the 311 Series in favor of a simpler control system for CV, CC, and CP operation modes. However, like it’s bigger siblings, mPower 300 offers Modbus and SCPI command protocols which can be sent directly through USB or Ethernet.

Powerful capabilities

• A total of 10 models are available with 1.5 kW or 3 kW output in a 1U enclosure.
• Operate in constant voltage, current, or power mode.
• Autoranging power output enables the system to deliver 100% power over a wide range of voltage and current.
• Active power factor correction of input power.
• Programmable using ModBus and SCPI protocols on a variety of interfaces.
• USB for remote control through Windows®, LabView®, and your own custom scripts.
• Ethernet for remote control using your own custom scripting.
• Analog Interface for remote control and monitoring of key operational parameters of the system using a PLC or your own custom control circuitry.
• Parallel output connectivity of up to 10 units.
• Output Share Bus automates the regulation of current load sharing among parallel-connected units.
• Output Voltage Sense Bus monitors voltage at the load, instead of the output terminals, to compensate for minor losses in output cables.
• Graphical display user interface with multiple buttons, and two rotary controls (which speed up data entry) allows for complete configuration, control, and monitoring.
• Safety features including user interface lockout and discharge circuitry. Built-in alerts for over voltage, current, power, and temperature.

Parallel Setups ↑

• Up to 10 units in parallel
• Increase the total current and power
• Individual units must each be configured to the same settings
• Use the analog bus to control dc output of all units at once

The Share Bus will regulate the voltage of each unit, and balance the load sharing of current as well. One unit is selected to serve as the reference source for the control limits managed over the bus, but otherwise each unit is operated separately for management of other settings, responding to alarms, and other activities. Using the analog interface, remote parallel control of some operations, such as DC output on/off, is also possible.

Running systems in parallel requires that each unit is the same model number (same series, with the same voltage, current, and power ratings).