Allen-Bradley 1719-IJ Counter Module

Allen-Bradley 1719-IJ Ex I/O Frequency Counter is a rugged, single‑channel input module in Rockwell Automation’s 1719 Ex I/O family that counts pulse frequency and detects direction of rotation for signals from encoders or other frequency sources in hazardous locations. Designed for Zone 2/Class I, Division 2 environments, it interfaces with standard 1719 Ex I/O backplanes and ships with a 1719‑TB6 6‑pole screw‑terminal block for field wiring. This intrinsically safe counter module integrates into compact modular I/O configurations, enabling accurate speed or rate monitoring of rotating equipment in chemical plants, offshore facilities, and other installations requiring safety‑rated equipment. Being part of the 1719 Ex I/O family, it follows the same installation practices and backplane integration as other Ex I/O modules, simplifying wiring, maintenance, and module exchange in demanding environments.