1719 Ex I/O Repair

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The Allen-Bradley 1719 Ex I/O series is one of the most recent product series from Allen-Bradley that are designed to operate in hazardous areas in industries where flammable gases or vapors may be present. This intrinsically safe distributed I/O system is fully modular and in the basic version of the chassis, it can accommodate 22 I/O modules, and there is a special version for smaller applications that can accommodate 8 I/O modules. To these basic chassis, the users can add another extension chassis that receives up to 24 I/O modules. All 1719 Ex I/O series modules are built to support Zone 2 or Class I, Division 2 environment installations and to integrate with devices in hazardous areas via the EtherNet/IP network. Not only did Allen-Bradley increase the safety and reliability of these devices, but the manufacturer also reduced the overall dimensions of the systems compared to the previous series of Ex I/O devices like the FLEX Ex I/O devices. The width of the 22-slot chassis is only 605 millimeters.

Mounting power modules on the chassis of the Allen-Bradley 1719 Ex I/O series modules and N+1 redundant power supply configurations are possible too. The HART 7 protocol has been introduced as standard features on all the analog modules installed in 1719 Ex I/O chassis. The 1794 Ex I/O modules have add-on profile support in the Allen-Bradley/Rockwell Automation RSLogix 5000 software, and they can house the following type of I/O modules: 4-channel HART analog configurable/input/input wide modules, RTD input modules, thermocouple input modules, 8-point DI NAMUR modules, 8-point DI NAMUR wide modules, 2-point DO 23V modules, 2-point DO 16.5V modules, and frequency counter modules. Accessories available for these modules are DC power supplies, screw and spring terminals, chassis extension cables, and empty slot covers.