When a Legacy LON Segment Stalls, the 140NOL91100 Restores the Link
A plant engineer faces a familiar problem: a Modicon Quantum rack running a LonWorks segment suddenly loses communication with field devices. The cause is often a failed transceiver module. The Schneider Electric 140NOL91100 is the direct replacement that gets that segment talking again at 1.25 Mbps.
This Modicon Quantum transceiver handles Local Operating Network (LON) connectivity inside the Modicon series. It mounts directly on the Quantum rack system, so technicians can swap it without redesigning the panel layout.
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Modicon Quantum Transceiver |
| Product Line | Modicon |
| Part Number | 140NOL91100 |
| Interface | LON (Local Operating Network) |
| Data Rate | 1.25 Mbps |
| Network Protocol | LonWorks (FTT-10) |
| Power Supply | 24 VDC |
| Connector Type | Screw terminal |
| Operating Temperature | 0°C to 60°C |
| Humidity Range | 10% to 95% RH, non-condensing |
| Mounting Type | Modicon Quantum rack system |
| Weight | 0.06 lbs (0.03 kg) |
| Compliance | CE, UL, cUL |
What the Key Parameters Mean on the Plant Floor
The 1.25 Mbps data rate keeps LON traffic moving without bottlenecks on control segments. The LonWorks FTT-10 protocol provides robust communication across the network. A 24 VDC supply matches standard Quantum rack power, so no separate power conditioning is needed. The screw terminal connector gives maintenance teams a stable, serviceable wiring point.
Where the 140NOL91100 Fits
Oil and Gas Skids
Remote wellhead panels often use LON segments for valve and sensor data. This transceiver keeps that data flowing at 1.25 Mbps in ambient temperatures from 0°C to 60°C.
Water Treatment Networks
Non-condensing humidity from 10% to 95% RH is common in pump houses. The 140NOL91100 handles that environment without added enclosures.
Factory Automation Retrofits
When an existing Quantum rack needs LON connectivity restored, this module drops into the rack system and reconnects the segment. For replacement and upgrade projects, having the exact module ready-to-ship shortens downtime.
Integration and Rack Installation
Mount the module on the Modicon Quantum rack system. Wire the LON segment to the screw terminal connector and confirm the 24 VDC supply is present. Verify the LonWorks FTT-10 network settings match the rest of the segment before power-up.
Integration Note
Wiring into a LonWorks network may require an external gateway or connection module depending on the existing architecture. Confirm cables and gateways with the supplier before ordering.
Reliability and Maintenance
Inspect the screw terminal connections periodically for tightness. Keep the rack area within the 0°C to 60°C operating range and avoid condensation. Because the module weighs only 0.06 lbs (0.03 kg), handling during inspection is simple. For oil, gas and industrial automation spares, fast dispatch and worldwide delivery keep critical segments online.
Selection Checklist
Before ordering, confirm the rack series, the LON segment protocol, and the 24 VDC supply. The 140NOL91100 complies with CE, UL, and cUL standards. Contact Oil AutoTech today for pricing and availability.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
