FOXBORO FBM219 RH916RH Industrial Control Module

FOXBORO FBM219 RH916RH Discrete Input Module

This workhorse handles dry contact inputs in harsh industrial settings—think emergency stops, valve positions, or pump statuses across chemical plants and refineries. It’s the module you’ll find tucked into I/A Series racks keeping processes humming when vibration and electrical noise would trip lesser gear. Honestly, if your plant runs Foxboro, you’ve probably tripped over one of these in a control room cabinet.

Where you’ll actually use this thing

Saw one last month on a Texas refinery’s flare stack control system—replaced a failing FBM203 after lightning took out half the rack. These handle gritty environments where analog signals would drift: conveyor belt emergency stops in cement plants, tank level switches in wastewater treatment, or burner management interlocks in boilers. We keep RH916RH modules in stock for I/A Series retrofits, especially when clients are tired of fighting ground loops with older FBM211s. Oh, and that paper mill in Maine? They’ve got 37 of these running their steam turbine trips—zero failures since 2018.

Why it won’t quit on you mid-shift

The RH916RH’s secret’s in the terminal block—it snaps in solid so vibration won’t loosen connections like those flimsy European clones. Each channel’s isolated to 500V, so when that 480V motor starter kicks off next to your sensor wiring, the module doesn’t freak out. Compatibility’s dead simple: plugs straight into FCM10E or FCM20E chassis alongside FBM204s or FBM237s. Personally, I’d avoid using these above 60°C ambient (saw one cook in a compressor skid once), but below that? They’ll outlive the PLC it’s talking to. Oh, and the LED indicators—bright red for active channels—save hours during troubleshooting. One plant manager told me, “If it’s blinking, it’s breathing.” Solid advice.