QSI offers operator interface terminal with e-stop switch

Salt Lake City, UT—QSI Corp. reports that it’s added an emergency stop (E-stop) switch option to its QTerm-G55 human-machine interface (HMI) terminal.


Salt Lake City, UT— QSI Corp. reports that it’s added an emergency stop (E-stop) switch option to its QTerm-G55 human-machine interface (HMI) terminal. QTerm-G55 with E-stop is a rugged, handheld HMI terminal that uses graphics and a keypad to interface with the user. It is the newest addition to QSI’s Qlarity graphic terminals.

QSI adds that E-stop switches are used primarily in industrial robotics and automation applications. The company says its intent is to provide fail-safe control to immediately shut down equipment operation when operator safety is threatened. The E-stop option for QTerm-G55 provides:

  • A two-pole (four-wire) normally closed switch, which meets U.S. and European requirements for machine safety;

  • Placement of the switch above the terminal display, which allows easy access without hindering normal terminal operation; and

  • A rugged switch and terminal housing, which can withstand 1-meter drops onto concrete.

The terminal’s E-stop version can be equipped with one EIA-232, -422 or -485 serial ports, Ethernet 10Base-T, or a Power-over-Ethernet (IEEE 802.3af) interface. QTerm-G55 has a 320 x 240-pixel, color LCD display measuring 96 mm (3.8 in.) diagonal. An optional grayscale display is available, and is viewable in most lighting conditions. Other industrial-grade features include 24-key or 40-key membrane/steel snap dome keypad with LEDs; 2 Mbytes flash/16 Mbytes SDRAM; programmable speaker and real-time clock.

QTerm-G55 operator interface is ruggedized for use in harsh industrial environments, and has a NEMA-12, CE-certified housing. The terminal also has an overmolded rubber boot, which provides a superior seal around an ABS polycarbonate plastic case.

QTerm-G55 operator interface uses an object-based graphic terminal programming language called Qlarity (pronounced clarity), which allows users to design a simple control panel interface or a complete stand-alone application by using pre-defined objects, edit existing objects, or author their own objects. Qlarity Foundry, a PC-based design tool, provides a Windows environment for screen creation, application simulation, debugging and downloading to QTerm-G55.

Control Engineering Daily News Desk
Jim Montague, news editor

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