MPE XR III series, Руководство оператора

Страница: 13 / 129

1.0 GENERAL INFORMATION
1.1 Description
This manual contains operation and maintenance instructions for Magna-Power Electronics' XR
Series, current fed power supplies. These power supplies are constant voltage/constant current
sources suitable for a wide range of applications.
1.2 Features
Magna-Power Electronics’ XR Series combines the best of dc power processing with
multiprocessor embedded control. Magna-Power Electronics’ innovative power processing
technology improves response, shrinks package size, and reduces cost. XR Series power
supplies are current fed and are more tolerant to abusive loads than conventional switching
power supplies.
XR Series power supplies can operate as a voltage source or a current source depending on the
control settings and load conditions. If the power supply is operating as a voltage source and the
load increases to a point beyond the current command setting, the power supply automatically
crosses over to current mode control and operates as a current source at that setting.
XR Series power supplies incorporate an optically isolated feedback system. The result is that
all user interface circuitry is referenced to earth ground -- not the negative terminal of the power
supply. This enables users to connect external circuitry without concern of ground loops or
voltage breakdown.
XR Series power supplies offer both master/slave parallel and series operation. This enables two
or more power supplies to be placed in parallel for increased output current or in series for
increased output voltage. With master/slave operation, power supplies operate at near equal
voltage and current.
XR Series power supplies can be configured through the front panel for different applications.
The power supply can be programmed to have its control functions accessible from the front
panel, rear connector, or with RS232, optional IEEE-488, or optional Ethernet communications.
External RS485 to RS232 and external USB to RS232 converters are also available to echo
commands over the communications network. Communication options must be specified at time
of order. XR Series power supplies support a full set of SCPI commands. Drivers are available
for LabWindows/CVI, LabVIEW, and IVI.
Sensing can be established at the output terminal of the power supply or through a rear terminal
block for sensing at the load. A smart remote sense detector checks whether or not sense leads
are present eliminating the potential of uncontrolled operation. An external interlock can be set
to enable operation only when an external connection is made. Even calibration has been
simplified with front panel access to calibration digital potentiometers.
1