Description
Product Introduction & Engineering Value
Centralized controllers create single points of failure and long I/O cable runs. The FCP270 P0917YZ moves control execution into the field. It performs regulatory, logic, timing, and sequential control while communicating directly with connected Fieldbus Modules over the 2 Mbps Module Fieldbus.
The processor links to the plant control network via standard 100 Mbps fiber-optic Ethernet. A single module supports up to 32 of the 200 Series FBMs (or more when paired with a Fieldbus Expansion Module). The fault-tolerant version uses two processor modules on a dedicated baseplate with a high-speed interconnect so that control continues without interruption if one module fails. No separate Fieldbus Communications Module is required for basic 200 Series FBM support.
Technical Specifications
| Parameter | Value |
|---|---|
| Processor Type | Field Control Processor 270 |
| Configuration | Single or fault-tolerant pair |
| FBM Support | Up to 32 200 Series FBMs (more with FEM100); up to 64 of 100 Series FBMs |
| Control Network | 100 Mbps fiber-optic Ethernet |
| Module Fieldbus | 2 Mbps HDLC (direct to FBMs) |
| Memory | 16 MB SDRAM + 32 MB Flash (typical) |
| Power Supply | 24 V DC (redundant capable) |
| Power Consumption | Approx. 8.5 W maximum per non-fault-tolerant module |
| Operating Temperature | 0 to +60 °C (+32 to +140 °F) typical |
| Mounting | Dedicated 2-position or compatible baseplate |
| Dimensions (approx.) | 103–114 mm H × 51.5 mm W × 147 mm D |
| Weight | Approx. 0.6 kg per module |
Field Application & The “Trench” Experience
A Gulf Coast chemical plant needed to expand control capacity on a remote reactor train without running hundreds of additional I/O cables back to the central equipment room. An FCP270 P0917YZ was installed in a field cabinet with a mix of 200 Series FBMs. The processor executed the regulatory and sequential control strategies locally while communicating process data and alarms over the plant fiber Ethernet network. When a later fault-tolerant pair was added, switchover testing confirmed continuous control with no process disruption.
Typical niche applications:
- Field-mounted regulatory and sequential control for remote process units where cable runs to a central controller are impractical
- Fault-tolerant control of critical continuous processes that cannot tolerate controller failure
- Migration or expansion of existing I/A Series systems that need additional FBM capacity closer to the process
FCP270 P0917YZ
FCP270 P0917YZ
Transparency SOP: QA & Testing
- Visual inspection of housing, connectors, fiber interfaces, and original P0917YZ labeling.
- Power-up on dual 24 V supplies with Module Fieldbus and Ethernet link verification.
- Basic control strategy load and execution test with attached FBM simulation or known good modules.
- Fault-tolerant pair (when applicable) switchover test under controlled conditions.
- Network communication and alarm handling verification.
- Extended burn-in while monitoring continuous operation and thermal stability.
The Veteran’s Tech Trap Guide
⚠️ Baseplate compatibility is critical. The FCP270 requires a specific baseplate that supports the processor module(s) and the high-speed interconnect for fault-tolerant pairs. Installing it on a standard FBM-only baseplate will prevent proper operation.
PRO TIP: When configuring a fault-tolerant pair, both modules must be the same hardware and software revision. Mixing revisions can prevent successful synchronization or cause unexpected switchover behavior.
⚠️ Fiber Ethernet and Module Fieldbus are separate. The 100 Mbps fiber connection goes to the plant control network. The 2 Mbps Module Fieldbus connects to the local FBMs. Incorrect cabling or missing terminators on either network will produce communication faults that are easy to misdiagnose.
Dynamic FAQ
Q: What is the main role of the FCP270 P0917YZ? A: It is a field-mounted controller that executes process control strategies and communicates directly with Fieldbus Modules while linking to the plant control network over 100 Mbps fiber Ethernet.
Q: Does the FCP270 support fault tolerance? A: Yes. A single module can be used, or a fault-tolerant pair can be installed on a compatible baseplate for automatic switchover.
Q: How many Fieldbus Modules can one FCP270 support? A: Up to 32 of the 200 Series FBMs directly. Capacity increases with a Fieldbus Expansion Module (FEM100). It can also support up to 64 of the older 100 Series FBMs.
Q: Is a separate Fieldbus Communications Module required? A: No. The communicates directly with 200 Series FBMs over the 2 Mbps Module Fieldbus.
Q: Are New Surplus P0917YZ units original Foxboro product? A: Yes. Units are original OEM material that have passed full functional, communication, and (where applicable) fault-tolerant switchover testing.
Q: What warranty is provided? A: 12-month warranty against defects in materials and workmanship from the date of shipment for both New Surplus and fully tested refurbished units.
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