AMETEK ReFlex Fault Protection Groups User Manual

Reflex power™ fault protection groups

Technical Note

ReFlex Power™ Fault Protection Groups

Document No. M380595-TN Rev A • 01/08/09

9250 Brown Deer Road, San Diego CA 92121 • Tel: 858-450-0085 • Fax: 858-458-0267 • email:

[email protected]

• Web:

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PURPOSE

Establish and configure Fault Protection Groups for the Elgar
ReFlex Power™ system. Fault Protection Groups are
presently available for DC Power Modules with Firmware
Version 2.000.018xi or higher, with Controller Module

Firmware Version 2.001.029xf or higher. Fault Protection
Group functionality will be added to future releases of firmware
for AC and Load Modules.

BACKGROUND

The ReFlex Power

system presently includes fault

monitoring and shutdown at the individual power module level,
and through the ReFlex Power

Controller module to inhibit

the outputs (Remote Inhibit) of all power modules contained
within a system. All ReFlex Power

power modules include a

Module Enable (ENA) signal that allows the user to enable or
disable each power module individually with an external signal
or relay contact closure.

Each DC power module also includes a Trigger Input (TRIG-
IN) and Trigger Output (TRIG-OUT) signal on the front panel
Interface connector for implementing precise timing functions
based upon internal and/or external events. List mode
sequences may be preprogrammed to execute upon receipt of
trigger signals. The Controller module also includes four bi-
directional Digital Input/Output signals (DIG0-I/O through
DIG3-I/O) that are passed through the Controller module to the
ReFlex Power

mainframe backplane for processing by DC

power modules.

FAULT PROTECTION GROUPS

Fault Protection Groups provide additional capability to group
and to shutdown DC power modules through the power
module Enable Input and Trigger Output signals. The ability to

create fault groups through these signals provides increased
flexibility and reconfigurability to meet various user
requirements.

TERMS AND DEFINITIONS

ENA

Enable

The Enable signal is an input on ReFlex Power

power modules

Interface connector (ENA = Pin 1, ENA-RTN = Pin 6) that enables o
disables the power module outputs. The Enable signal is internall
pulled up to +5VDC with a 10K ohm resistor. To enable the module
the signal is pulled low (<= 0.5VDC) with respect to ENA RTN signa
this may also be accomplished by shorting Pins 1 and 6.

TRIG-OUT Trigger Output

Signal output on ReFlex Power

power modules’ Interface connecto

(TRIG-OUT = Pin 2, TRIG-OUT-RTN = Pin 7) that produce a
external trigger signal. The Trigger output signal is TTL compatible
Vol <= 0.3VDC @ 1mA, Voh >= 4.13VDC @ 1mA. Trigger latency i
<= 5uS. Trigger outputs may be positive leading edge asserted o
negative leading edge asserted.

MODF

Module Fault Output

The Trigger Output (TRIG-OUT) signals on the power modul
Interface connector may be reconfigured via a software command a
a Module Fault (MODF) output signal (MODF-OUT = Pin 2, MODF
OUT-RTN = Pin 7) to assert a latched output upon detection of a
internal fault condition.

SCPI Standard

Commands

for

Programmable Instruments

Developed by the SCPI Consortium as a standard set of command
to control test and measurement devices in instrumentation systems.