MPE XR III series, Руководство оператора

Страница: 14 / 129

XR Series power supplies have three levels of over voltage/current protection: shutdown of
controlling insulated gate bipolar transistors (IGBT’s), disconnect of main power, and input
fuses. After an over voltage/current trip condition, the supply must be reset.
XR Series power supplies have push button start/stop controls. These controls are tied to a
mechanical contactor which operates with the electronic switches to break the ac mains when
stop is commanded. Unlike competing products, an off means both an electrical and mechanical
break in the power circuit — not a break in an electronic switch. Safety comes first at Magna-
Power Electronics.
XR Series power supplies are available with two alternative front panels: XR Version for
analog/digital control and C Version for computer or programmable logic control. All XR Series
power supplies employ the same power processing engine. Table 1.1 shows a comparison
between the different models.
XR Series models utilizing the XR Version front panel provide stepless analog control from
front panel potentiometers. With simple configuration changes, voltage, current, over voltage
trip, and over current trip may be programmed from the rear connector or with RS232, optional
IEEE-488, or optional Ethernet communications. XR Series power supplies with XR Version
front panels are well suited for industrial and laboratory applications.
XR Series power supplies with XR Version front panels offer an analog input to modulate the
voltage or current setting using piecewise linear approximation. This feature enables the voltage
or current setting to be adjusted by a sensor input, such as a thermistor, or by monitoring its own
voltage or current. Modulation allows the output to be tailored for advanced process control
applications, battery charging, and source emulation.
XR Series models utilizing the C Version front panel only allow control from the rear connector
or with RS232, optional IEEE-488, or optional Ethernet communications. These models are
intended for process control applications where front panel controls and displays are not required
or desired.
Remote Interface Software is included to provide sophisticated computer control. This software
provides a virtual control panel to emulate the power supply’s front panel, a command panel to
send and monitor SCPI commands, a register panel to monitor registers, a calibration panel to
provide easy access to calibrate digital potentiometers, a firmware panel to upgrade the control
microprocessor, and a modulation panel to easily program modulation parameters.
2