More Products From This Vendor
Foxboro FBMSLT Single Loop Transmitter Fieldbus Module
Foxboro FBMSLT Single Loop Transmitter Fieldbus Module. Brand New hardware with Original Stock and Global Shipping available.
Description
The Foxboro FBMSLT, also cataloged as the FBMSLT Single Loop Transmitter Fieldbus Module, operates as a dedicated hardware component for single-channel 4-20 mA current loop acquisition and signal isolation within Foxboro I/A Series platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FBMSLT |
| Brand | Foxboro |
| Origin | USA |
| Weight | 500 g |
| Dimensions | Standard Baseplate Slot Mount |
| Operating Temp | -20 to +70 deg C |
| Power Consumption | Standard Baseplate Bus Powered |
| Signal Type | Single 4-20 mA DC independent loop |
| Supported Devices | 2-wire and 4-wire transmitters |
| Input Resistance | Approx 250 ohm (precision internal resistor) |
| Accuracy | +/-0.1% of span |
| Resolution | 16-bit A/D conversion |
| Loop Power Supply | Integrated ~24 VDC output |
| System Compatibility | Foxboro I/A Series, EcoStruxure Foxboro DCS |
| Isolation Type | Galvanic channel-to-system isolation |
| Communication Interface | Redundant Foxboro Fieldbus (2 Mbps) |
Loop Isolation and Fieldbus Communications
The FBMSLT conditions individual transmitter loops by providing an integrated ~24 VDC loop power supply, eliminating external powering modules for connected 2-wire devices. High-resolution 16-bit A/D conversion maps incoming 4-20 mA signals across an internal 250 ohm precision resistor, achieving a +/-0.1% measurement accuracy. Built-in channel-to-channel isolation prevents ground loop interference across field sensors. When transmitting data over the 2 Mbps redundant Foxboro Fieldbus, the module supports 4-20 mA HART loop protocol device integration, routing digitizing measurements directly into system control logic.
Frequently Asked Questions
Q: How does the internal 24 VDC supply on the FBMSLT power field transmitters?
A: The module contains an integrated loop power supply that outputs approximately 24 VDC across the input terminals, allowing direct connection of standard 2-wire current loop transmitters without needing an external power supply brick.
Q: What mechanisms protect signal processing when field cabling experiences common-mode noise?
A: Full galvanic isolation between field terminals and the central bus network breaks ground paths, suppressing high common-mode voltages and preventing noise propagation into adjacent control channels.
Field Installation Guidelines
- Mount the FBMSLT module firmly into the assigned slot on the Foxboro baseplate, securing top and bottom retaining latches.
- Terminate 2-wire or 4-wire 4-20 mA transmitter cables at the corresponding baseplate terminal blocks.
- Keep field signal wiring physically separated from AC power lines by a minimum clearance of 200 mm inside cabinet cable raceways.
- Connect cable shield drain wires to a single instrument grounding bus point inside the enclosure to preserve noise rejection performance.
Additional information
| Weight | 0.50 kg |
|---|---|
| Dimensions | 64 × 15 × 75 mm |
0.0 Average Rating Rated (0 Reviews)