Name: P0973LQ Foxboro A4‑Series Modular Managed Copper Ethernet Switch Card, I/A DCS Control Network Communication Module - MASSIVE
Brand: FOXBORO

Description

P0973LQ Foxboro A4‑Series Modular Managed Copper Ethernet Switch Card, I/A DCS Control Network Communication Module

Product Application

P0973LQ belongs to Foxboro A4‑Series switch family, hot‑swap plug‑in module, same hardware platform as P0973JQ (P0973JQ = mixed copper/fiber; P0973LQ = copper RJ45 only). It is used inside A4 modular switch chassis to build I/A & Evo DCS control LAN backbone. It exchanges real‑time process data between ACP / FCP controllers, FBM communication modules, H90 operator and engineering workstations. Widely used in petrochemical, refining, chemical and thermal power control cabinets. It supports VLAN, RSTP rapid spanning tree, SNMP remote monitoring and port mirroring for network troubleshooting. Hot‑swap design minimizes downtime during network maintenance.

P0973LQ

Product Specifications

Part Number: P0973LQ
Manufacturer: Foxboro (Schneider Electric, Invensys legacy)
Product Type: A4‑Series Modular Managed Copper Ethernet Switch Card
Installation: Plug into dedicated A4 switch chassis backplane
Port Composition: Multiple 10/100Base‑TX RJ45 copper ports + Gigabit SFP uplink slots
Switch Fabric: CoreFlow2 high performance switching chip
Management: Local Console port, Web, SNMP / RMON remote monitoring
Supported Protocol: IEEE802.1Q VLAN, QoS, LACP link aggregation, Rapid Spanning Tree, Port Mirroring
Power Supply: Powered by A4 chassis backplane; chassis supports dual redundant AC power modules
Operating Temperature: -40 ℃ ~ +70 ℃ industrial wide temperature
Humidity: 5% ~ 95% RH, non‑condensing
Vibration & Shock: IEC 68‑2‑6 / IEC 68‑2‑29 industrial standard
Certification: CE, UL, FCC, RoHS
Product Status: Spare replacement modular copper switch card for legacy I/A DCS projects
Approx. Weight: 0.7 kg

Core Technical Parameters

Hot‑swap module: Can be replaced online without powering down the whole A4 switch chassis
Full‑duplex wire‑speed forwarding, low latency for DCS real‑time control traffic
Port mirroring for packet capture and network fault diagnosis
Native Foxboro DCS network management compatibility; port / module fault alarms upload to DCS HMI
All copper RJ45 ports for short‑range cabinet local wiring; SFP uplink slots for fiber long‑distance interconnection

Recommended Matching Spare Parts & Accessories (8 Items)

A4 series modular switch chassis & backplane
Hot‑swap redundant AC power supply module for A4 chassis
Gigabit SFP fiber transceiver module (Multi‑mode / Single‑mode)
Console serial configuration cable
Shielded CAT6 Ethernet cable for DCS control network
OM3 multi‑mode fiber patch cord
UPS uninterruptible power supply for switch cabinet
Foxboro DCS network management configuration tool

P0973LQ

Product Features

✅ Modular Hot‑Swap Card Design Plug‑in A4 chassis architecture. Defective P0973LQ card can be pulled out and replaced online, no full chassis power cut required.

✅ RJ45 Copper Ports + SFP Gigabit Uplink Copper ports for nearby DCS nodes inside same cabinet; SFP slots support fiber uplink to connect other remote control cabinets.

✅ Complete Layer‑2 Management Functions VLAN partition, QoS priority scheduling, rapid spanning‑tree anti‑loop, link aggregation, port mirroring, SNMP remote monitoring for convenient DCS network O&M.

✅ Industrial Wide Temperature Grade -40~+70℃ working range, strong EMC and anti‑vibration performance, adapts to harsh control cabinet environment.

✅ Foxboro DCS Validated Hardware Officially validated for I/A & Evo control network, ensures stable low‑latency transmission of DCS control messages.

✅ Network Fault Alarm Upload Port link failure and module fault alarms can be sent to DCS operator HMI for real‑time network health monitoring.

✅ Flexible Network Topology Expansion Mix P0973LQ (copper card) and P0973JQ (copper+fiber card) inside same A4 chassis to build hybrid copper/fiber DCS network.

Installation Guidelines

Power down the target slot of A4 switch chassis, insert module into backplane slot and lock front fastening handle.
Power on chassis, confirm module running indicator light normal.
Connect ACP controllers, H90 workstations and FBM communication modules to RJ45 ports using shielded CAT6 cable.
Insert SFP transceiver module if gigabit fiber uplink to remote cabinet is needed.
Connect console cable to notebook PC to complete initial IP, VLAN and spanning‑tree parameter configuration.
Enable SNMP function to upload network status alarm to DCS HMI.
Test port communication and network redundancy topology.
Mark each port wiring label for easy later maintenance.

Maintenance Instructions

Daily Maintenance Check module running indicator and port link LED on site. Monitor network fault alarm on DCS HMI. Inspect cabinet ventilation and temperature.

Periodic Maintenance (Every 6–12 months) Clean dust on module ventilation hole. Check Ethernet cable connection tightness. Backup switch module configuration file. Upgrade firmware if Foxboro official recommendation issued.

Fault Maintenance

Module fault alarm: Replace hot‑swap spare card, restore network communication.
Port link down: Check shielded CAT6 cable, swap to spare port and modify network configuration.
Network communication delay / storm: Enable port mirroring to capture packets and locate abnormal DCS node.
Do not modify VLAN and spanning‑tree parameters arbitrarily without DCS network engineer authorization.

Long‑Term Operation Tips Maintain cabinet temperature within operating range. Backup module configuration file off‑site. Stock spare module and SFP transceivers for emergency replacement.