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- Foxboro
- FBM203d P0924EX
- Compression Screw Termination Assembly
- USA
- 128 × 79 × 112 mm
- 0.245 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Foxboro FBM203d P0924EX is a Compression Screw Termination Assembly used with the I/A Series 200 FBM203d RTD input module. Its job is to provide the field wiring termination point between RTD instruments and the FBM signal-processing module.
The P0924EX is specifically associated with the FBM203d, which handles eight RTD input channels with a 0–320 ohm input range and channel isolation. The termination assembly uses compression-screw connections, allowing field conductors to be landed directly at the termination point instead of being wired individually into the FBM itself.
In a plant environment, an FBM203d may be installed in a control cabinet while RTDs are distributed around pumps, heat exchangers, vessels, compressors, or process piping. The P0924EX provides the cabinet-side termination point for those instrument cables. A separate termination cable connects the termination assembly to the FBM baseplate, keeping field wiring organized and making module replacement easier.
The P0924EX is particularly useful in applications where multiple RTD signals have to be brought into an I/A Series 200 control system. For example, eight temperature measurements from bearings, process lines, tanks, or rotating equipment can be terminated at the assembly and passed to the corresponding FBM203d channels.
Because the termination assembly and FBM perform different functions, replacing a P0924EX should not be treated as the same task as replacing an FBM203d module. The correct termination assembly, cable type, FBM version, and field wiring arrangement should all be checked against the existing installation.
Technical Specifications
| ParameterSpecification | |
|---|---|
| Manufacturer | Foxboro |
| Model | P0924EX |
| Associated FBM | FBM203d |
| Product Family | I/A Series 200 |
| Product Type | Compression Screw Termination Assembly |
| Termination Type | Compression Screw |
| Associated Signal Type | RTD |
| Number of Channels | 8 |
| Associated Input Range | 0–320 ohm |
| Signal Function | Passive feedthrough with FBM203d channel isolation |
| Termination Assembly Material | Polyamide |
| Mounting | DIN Rail |
| Associated Termination Cable Type | Type 4 |
| FBM Baseplate Connection | 37-pin D-subminiature |
| Termination Assembly Connection | 37-pin D-subminiature |
| Accepted Solid Wire Size | 0.2 to 1.5 mm² |
| Accepted Stranded Wire Size | 0.2 to 1.5 mm² |
| Accepted AWG Range | 24 to 16 AWG |
| Stranded Wire with Ferrules | 0.25 to 0.75 mm² with plastic collar; 0.25 to 1.5 mm² without plastic collar |
| Associated Cable Length | Up to 30 m |
| Dimensions | 128 × 79 × 112 mm |
| Weight | 0.245 kg |
Product Features
- I/A Series 200 Compression Screw Termination Assembly
- Model P0924EX
- Associated with the FBM203d RTD input module
- Provides field termination for eight RTD input channels
- Compression-screw field wiring connections
- Polyamide construction
- DIN rail mounting
- Supports solid and stranded field conductors
- Passive signal feedthrough arrangement
- Works with the FBM203d channel-isolated RTD input architecture
- Uses a dedicated termination cable between the termination assembly and FBM baseplate
- Suitable for cabinet-based process instrumentation
- Helps separate field wiring from the electronic FBM module
Working Principle
The P0924EX does not perform the RTD measurement conversion itself. It acts as the physical field termination interface for the FBM203d.
A typical signal path is:
RTD Sensor → Field Wiring → P0924EX → Termination Cable → FBM203d → I/A Series 200 Control System
An RTD changes its electrical resistance according to temperature. The field conductors from the RTD are landed on the P0924EX compression terminals. From there, the signal is routed through the associated termination cable to the FBM203d.
The FBM203d handles the actual RTD signal acquisition and provides channel isolation. The P0924EX therefore remains a passive wiring interface rather than an independent temperature transmitter or signal-conditioning module.
This arrangement is useful during maintenance because the field wiring remains terminated at the assembly while the associated FBM can be serviced separately. In a cabinet containing many temperature measurement points, this also creates a more structured transition between field cables and the I/O electronics.
The FBM203d/P0924EX combination supports RTD applications covering the specified resistance range. Correct RTD wiring and channel configuration remain important because the termination assembly itself does not determine the sensor type or engineering temperature range used by the control application.
Role in an I/A Series 200 Control Architecture
The P0924EX sits at the field wiring interface of an I/A Series 200 RTD input channel group.
RTD Sensors → P0924EX → Termination Cable → FBM203d → I/A Series 200 System
| System Element | Function |
|---|---|
| RTD Sensor | Measures process or equipment temperature |
| P0924EX | Provides compression-screw field termination for FBM203d RTD channels |
| Termination Cable | Carries the field signals between the termination assembly and FBM baseplate |
| FBM203d | Acquires eight isolated RTD input signals |
| FBM Baseplate | Provides the physical and electrical interface for the fieldbus module |
| I/A Series 200 System | Processes the acquired temperature information |
| Control Application | Uses temperature values for monitoring, alarms, interlocks, calculations, or control |
The P0924EX is therefore a wiring-side component of the I/O architecture. It should be matched to the FBM203d rather than selected solely by physical appearance or terminal arrangement.
Industrial Applications
| Application | Typical Use |
|---|---|
| Process Plants | Connecting distributed RTDs to the control system |
| Pump Stations | Monitoring bearing, casing, or process temperatures |
| Compressor Systems | Bringing equipment temperature signals into the DCS |
| Heat Exchanger Systems | Monitoring inlet, outlet, and equipment temperatures |
| Chemical Processing | Collecting temperature measurements from vessels and piping |
| Oil and Gas Equipment | Connecting field RTDs associated with process equipment |
| Power Generation | Monitoring temperatures around auxiliary and process equipment |
| Water Treatment | Monitoring process and equipment temperature points |
| Manufacturing Lines | Collecting temperature feedback from production equipment |
| Utility Systems | Terminating multiple RTD signals within a control cabinet |
Installation and Maintenance
- Confirm that the existing I/O configuration uses an FBM203d before installing the P0924EX.
- Verify that the replacement part is the correct P0924EX Compression Screw Termination Assembly rather than an assembly intended for another FBM version.
- Identify each field RTD cable and record its corresponding channel before disconnecting the existing assembly.
- Check the RTD wiring arrangement and verify that the conductors are landed on the correct termination points.
- Use compatible solid or stranded conductors within the specified termination range.
- Inspect the compression screws and terminal points for loose connections, damaged conductors, or signs of overheating.
- Verify the termination cable between the P0924EX and FBM baseplate before returning the system to service.
- Check the D-subminiature connections for proper seating and mechanical security.
- Confirm that the FBM203d channel configuration corresponds to the connected RTD instruments.
- After installation, compare the displayed temperature values with known process conditions or a suitable reference measurement.
- If one channel reads incorrectly, check the individual RTD, field wiring, termination point, cable, and FBM channel before replacing the termination assembly.
- Keep the final channel-to-instrument wiring record with the cabinet documentation so future maintenance personnel can identify each temperature input quickly.
When troubleshooting an RTD channel, resistance measurement at the appropriate point in the signal path can help distinguish a sensor or field-wiring problem from an issue farther downstream in the termination or FBM circuitry.
Related Components
| Component | Function |
|---|---|
| Foxboro FBM203d | Eight-channel isolated RTD input module associated with P0924EX |
| P0924EX | Compression screw termination assembly for FBM203d |
| FBM203d Termination Cable | Connects the termination assembly with the FBM baseplate |
| FBM Baseplate | Provides the mounting and module interface |
| I/A Series 200 FBM System | Control-system platform for distributed field I/O |
| RTD Sensor | Provides resistance-based temperature measurement |
| DIN Rail | Mounting structure for the termination assembly |
| Field Wiring | Carries RTD signals from process equipment to the termination assembly |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Foxboro FBM203d | 8-Channel RTD Input Module | Platinum, nickel, or copper RTD signal acquisition within the supported range |
| Foxboro RH927AM | FBM203d Module | Associated FBM203d hardware reference for current-generation replacements |
| Foxboro P0924EX | Compression Screw Termination Assembly | Field termination for FBM203d RTD inputs |
| Foxboro P0917JM | Ring Lug Termination Assembly | Alternative termination arrangement for compatible RTD applications |
| Foxboro FBM203 | 8-Channel RTD Input Module | Standard RTD input applications with the corresponding termination arrangement |
| Foxboro FBM203c | 8-Channel RTD Input Module | Copper RTD applications with a lower resistance range |
| Foxboro I/A Series 200 | Distributed I/O Platform | Process control and field signal acquisition |
Key Advantages
- Provides a dedicated field termination point for the FBM203d.
- Supports eight RTD input channels through the associated FBM.
- Uses compression-screw connections for field wiring.
- Separates field termination from the electronic I/O module.
- DIN rail mounting suits conventional control cabinet installations.
- Supports organized RTD wiring in multi-channel process applications.
- Works with the dedicated FBM203d termination cable arrangement.
- Suitable for maintenance and replacement work on existing I/A Series 200 installations.
Technical FAQs
Is the P0924EX an RTD input module?
No. The P0924EX is a Compression Screw Termination Assembly. The actual RTD signal acquisition is performed by the associated FBM203d module. The P0924EX provides the field wiring interface between the RTD circuits and the FBM.
Which Foxboro module is the P0924EX intended for?
The P0924EX is specifically associated with the FBM203d, an eight-channel RTD input module. The termination assembly and FBM version should be matched when replacing components in an existing I/A Series 200 installation.
What type of field wiring can be connected to the P0924EX?
The P0924EX uses compression-screw terminals and accepts solid and stranded conductors within its specified wiring range. For stranded conductors with ferrules, the allowable range depends on whether a plastic collar is used.
What should be checked if an FBM203d temperature channel has no reading?
Start at the field side by checking the RTD sensor, conductor continuity, wiring arrangement, and P0924EX terminal connection. Then check the termination cable and the corresponding FBM203d channel. Comparing the measured RTD resistance with the expected sensor condition can help identify whether the fault is in the sensor circuit or farther into the I/O system.