The Emerson P155.R2 (also designated as P155.R2 Design PCB S600 Power Plane Board) is a specialized signal connector and power distribution board manufactured by Emerson Process Management. It is primarily integrated into the Emerson FloBoss S600 / Spectra S600 flow computer and power distribution rack platforms.
This board serves as a centralized terminal plane, providing 24V DC power routing, high-density signal distribution, and noise-isolated connections between field I/O devices and the main S600 controller backplane.
Technical Specifications
| Parameter | Specification |
| Manufacturer | Emerson Process Management |
| Product Series | FloBoss S600 / Spectra 600 Series |
| Model / Part Number | P155.R2 (P155 R2) |
| Board Type | Connector Board / S600 Power Plane PCB Assembly |
| Operating Supply Voltage | 24 V DC Nominal |
| Form Factor | Eurocard Plug-In Print Card (~100 mm × 160 mm) |
| Interface / Terminations | High-Density Multi-Channel Terminal Headers / S600 Backplane Edge Connectors |
| EMC Immunity Compliance | IEC 61000 Industrial Standard |
| Operating Temperature | -20°C to +70°C (-4°F to +158°F) |
| Approximate Weight | ~0.50 kg to 1.0 kg |
Core Features & Operating Capabilities
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S600 Backplane Signal Marshalling: Connects multi-channel analog and discrete signal loops directly into the S600 processor rack, reducing panel clutter in field marshalling cabinets.
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Integrated Power Plane: Distributes regulated 24V DC power to onboard module slots, sensor excitation loops, and adjacent communication boards.
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High EMC Noise Suppression: Designed in accordance with IEC 61000 standards to suppress electromagnetic interference (EMI) caused by nearby variable frequency drives (VFDs) and power switching equipment.
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Compact Eurocard Form Factor: Slides into standard S600 card cages or DIN/panel-mounted subracks for rapid installation and maintenance.
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Circuit Protection & Isolation: Incorporates onboard voltage regulation, current limiting, and pass-through signal filtering to protect central processing electronics against field transients.
Related Emerson FloBoss / Spectra S600 Components
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P188.R2 — Emerson Spectra 600 12-Channel HART Communication Circuit Board.
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FloBoss S600 / S600+ — High-accuracy flow computers for oil & gas custody transfer measurement.
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DL8000 — Emerson Preset Controller / Distributed Automation Manager.
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ROC800 Series — Emerson Remote Automation Controllers.
