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FBM242 P0916NG
FBM242 P0916NG
FBM242 P0916NG

Foxboro FBM242 P0916NG Relay Output Terminal Assembly

  • Model: FBM242 P0916NG
  • Brand: Foxboro (Invensys / Schneider Electric)
  • Series: Foxboro I/A Series DCS
  • Core Function: 16-channel discrete relay output interface
  • Product Type: Termination Assembly / Discrete Output Interface Component
  • Key Specs: 16 SPDT relay outputs, external source switching, up to 250 V AC / 5 A capability
  • Condition: New Original / New Surplus (availability varies)
  • ⚠️ Status: Obsolete Model – Limited Stock Available
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Description

Key Technical Specifications

Parameter Value
Manufacturer Foxboro
Model FBM242
Part Number P0916NG
Product Category Discrete Output Termination Assembly
Control System Foxboro I/A Series
Output Channels 16 channels
Output Type SPDT (Form C) relay outputs
External Source Voltage Up to 250 V AC / 125 V DC (application dependent)
Relay Contact Rating Up to 5 A at 250 V AC
DC Switching Capability <30 V DC at 5 A maximum
Isolation Channel isolation provided by termination assembly relays
Field Connection Compression terminal interface
Mounting Method DIN rail mounted termination assembly
Communication Interface Via FBM242 module through redundant 2 Mbps Fieldbus
Environmental Rating Suitable for Class G3 harsh environments
Operating Temperature FBM242 system: approximately -20 to +70 °C
Module Power Supply 24 V DC redundant supply system
Calibration No calibration required

 

Product Introduction

The Foxboro FBM242 P0916NG is a termination assembly used with the FBM242 externally sourced discrete output interface module in Foxboro I/A Series DCS installations. It provides 16 relay output channels for controlling external field loads such as motor starters, solenoid valves, alarms, and other discrete devices.

The P0916NG termination assembly handles field-side switching through SPDT relay contacts while maintaining electrical separation between control electronics and external circuits. It is commonly retained by plants operating legacy I/A Series systems where replacing the complete DCS platform is not practical.

 

Installation & Configuration Guide

 

Stage 1: Pre-Installation Preparation (Estimated Time: 10 minutes)

⚠️ Safety First

Before replacing the FBM242 P0916NG:

  1. Notify operations and obtain shutdown approval.
  2. Place controlled equipment into a safe state.
  3. Apply lockout/tagout procedures.
  4. Verify field power isolation with a multimeter.

Tools Required

  • ESD wrist strap
  • Digital multimeter
  • PH1 screwdriver
  • Wire labels
  • Smartphone/camera for documentation

Data Backup

Before removal:

  • Record the module slot location.
  • Photograph all relay wiring.
  • Document terminal numbering.
  • Record field device assignments.
  • Verify I/A Series configuration database mapping.

 

Stage 2: Removing the Existing Assembly (Estimated Time: 15 minutes)

  1. Remove cabinet access covers.
  2. Identify the P0916NG termination assembly.
  3. Label all field wiring before disconnecting.
  4. Loosen compression terminals carefully.
  5. Disconnect field wiring.
  6. Remove termination assembly mounting hardware.
  7. Inspect DIN rail mounting area.

⚠️ Important:
Do not rely on memory for relay terminal wiring. A single misplaced common contact can reverse equipment operation.

 

Stage 3: Installing the New P0916NG (Estimated Time: 15 minutes)

  1. Confirm the replacement part:

    Foxboro →

  2. Verify compatibility with the existing module.
  3. Mount the termination assembly on the DIN rail.
  4. Reconnect wiring according to the original documentation.
  5. Check relay common, normally open (NO), and normally closed (NC) terminals.
  6. Tighten terminals to the recommended torque.

Installation Checklist

☐ Correct TA model installed
☐ Relay wiring verified
☐ Field voltage confirmed
☐ Ground connections checked
☐ Terminal screws secured

 

Stage 4: Power-On & Functional Testing

  1. Restore control cabinet power.
  2. Verify communication status.
  3. Confirm module recognition in the Foxboro I/A Series system.
  4. Test individual output channels.

Recommended checks:

  • Command output ON/OFF from control system.
  • Verify relay contact changeover.
  • Confirm field device response.
  • Check abnormal alarms.

⚠️ Troubleshooting Note

If output commands appear correct but equipment does not respond:

  • Check external field power.
  • Verify relay common and NO/NC wiring.
  • Confirm the correct termination assembly model.
  • Check whether the field load exceeds relay ratings.
FBM242 P0916NG
FBM242 P0916NG

 

Frequently Asked Questions (FAQ)

Q1: Is Foxboro a complete I/O module?

No. The is the termination assembly used with the discrete output interface module. The electronics and the termination assembly work together as an I/O channel system.

Q2: What type of signals does the handle?

The system handles discrete output signals. The termination assembly provides SPDT relay contacts for externally sourced field loads.

Q3: Can the replace other termination assemblies?

Not always. Foxboro provides multiple termination assemblies with different protection, relay, and power distribution arrangements. Verify the exact TA part number before ordering.

Q4: Is obsolete?

The Foxboro I/A Series FBM family is a legacy control platform. Many plants still operate these systems, so replacement parts are commonly sourced through industrial automation inventory suppliers. Confirm availability and condition before purchase.

Q5: Does replacing require software changes?

Usually, no major software modification is required if the replacement uses the same termination assembly type and wiring arrangement. However, verify the configuration and channel assignments before returning the system to service.

Q6: Why is this part available below original OEM pricing?

Legacy Foxboro components are often supplied from:

  • New surplus inventory
  • Factory spare stock
  • Tested refurbished inventory

Always confirm:

  • Physical condition
  • Test documentation
  • Warranty coverage
  • Packaging status

Q7: What should be checked before ordering ?

Confirm:

  • Existing module:
  • Termination assembly:
  • Relay output requirements
  • Field voltage level
  • Terminal wiring arrangement
  • Existing Foxboro I/A Series hardware revision

Incorrect termination assembly selection can result in wiring changes and commissioning delays.

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