XARTU/5™ Manual Copyright© 2014
Eagle Research Corporation
®
REV 11.1.11 Page | 1
INTRODUCTION
OVERVIEW
The XARTU/5 Remote Terminal Unit is an intelligent, compact, rugged, and reliable
industrial microprocessor-controlled computer designed for real-time remote data
acquisition and control applications. It can execute multiple processes, including tasks
such as complex math functions, control algorithms, etc., without host intervention.
Flexibility, expandability, and reliability were the major factors in the XARTU/5 design
philosophy. It is a balanced system, featuring flexible and expandable memory, I/O,
power, and communications schemes including support for HEXASCII, MODBUS, and
various other custom protocols upon request. A harsh environment tolerance is also
one of the RTU’s strengths. The operating temperature can range from -40C to 70C,
and the RTU comes in a fiberglass NEMA 4X enclosure. This allows the RTU to exist
where the work must be done, eliminating costly signal conditioning or expensive long
sensor runs.
The operator interface is a two-line, 32-character, liquid crystal display, and 25-key
keypad with nine user-definable function keys. This allows users to examine and/or
change process data and diagnose problems at the remote site without a local host or
terminal.
The RTU, normally fed with a 9-30 VDC supply, employs a low-power CMOS design. An
optional 120/240 VAC unit includes an uninterruptible power supply. Should it lose
power, the RTU will sense the failure, automatically switch to battery power, and
continue to operate at full capacity. Other power options include solar arrays and
thermoelectric generators for sites without conventional power.
RELIABILITY
The RTU is ruggedly built to perform in a variety of industrial environments. Care is
taken to maximize reliability by applying a urethane conformal coating to all circuit
boards, utilizing a hermetically-sealed keypad and display, and providing NEMA 4X
packaging.
NOTE
All references in this manual to the XARTU/5 apply equally to the XARTU/10, except
where noted. The primary difference between the two models is size – the XARTU/10 is
larger, and typically contains the power supply and other supporting hardware for the system.
Except where noted, this manual will refer to these units as ‘RTU’ or the ‘unit’.
(40 páginas)
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