Measurement of a machine's rotational speed is often accomplished using a device that transmits high-speed pulses. The FBM206 provides the means to accept up to eight of these pulse signals, with frequencies up to 25 kHz, and deliver the corresponding values to the Foxboro™ DCS.
The FBM206b, on the other hand, accepts up to four pulse inputs and provides up to four 0 to 20 mA outputs for associated control purposes. Both modules are designed to handle pulse input signals from a variety of sensors, including vortex and turbine meters, solid-state or electromechanical contacts, and other devices that produce similar pulse outputs.
Each input channel is capable of receiving a 2-wire pulse input signal from a sensor. The modules perform the necessary signal conversion to interface the electrical input signals from the field sensors with the redundant fieldbus, ensuring seamless communication and control integration.
These modules are the workhorses for pulse inputs. They are built for Class G3 (harsh) environments, so you don't have to baby them.
The "Pure Input" Model (FBM206)
What you get: 8 Channels
The Job: Pure Pulse Input (7-27 VDC)
Best for: When you just need to capture a lot of data, fast
The "Hybrid" Model (FBM206b)
What you get: 4 Inputs + 4 Outputs
The Job: 4 Pulse Inputs (same 7-27 VDC specs) PLUS 4 Analog Output channels (0-20 mA)
Best for: When you need to monitor and control loops in the same slot
Key Engineering Advantages
Speed: They handle input rates up to 25 kHz. That is fast.
Clean Signals: Every channel is galvanically isolated. No crosstalk, no ground loop headaches.
Brains Onboard: The software handles the heavy lifting—Pulse Rate Totalization, Resolution, and Meter Scaling are all configurable right on the module.
Easy Wiring: Uses Termination Assemblies (TAs) for local or remote wiring. Supports loop-powered devices (internal or external) without a fuss.
Frequently Asked Questions
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100%. We know these parts go into harsh environments, so we test them thoroughly. We only sell what we trust.
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