Product Overview
Industrial control has evolved from relay logic to sophisticated PLC architectures, and the Schneider Electric 140ERT85420 reflects that journey. As a multifunction input module in the Modicon Quantum line, it delivers 32 inputs across 40 terminals, giving integrators a practical way to consolidate field signals into a single, well-organized interface. The 140ERT85420 is built for clean indoor environments where reliability and straightforward connectivity matter most.
Technical Specifications
The table below summarizes the key parameters for this module.
| Specification | Value |
|---|---|
| Product | Multifunction input module |
| Product Line | Modicon Quantum |
| Part Number | 140ERT85420 |
| EAN | 3595864146225 |
| Number of Inputs | 32 inputs |
| Number of Terminals | 40 terminals |
| Maximum Power Consumption | 7.5 W |
| Insulation | Optocoupler insulation |
| Operating Temperature | 0 to 40 degrees Celsius |
| Storage Temperature | 0 to 50 degrees Celsius |
| Maximum Operating Humidity | 80% RH without condensation |
| Maximum Storage Humidity | 80% RH without condensation |
| Maximum Operating Altitude | 1000 meters above sea level without derating |
| Maximum Storage Altitude | 1000 meters above sea level |
| Terminal Block | Screw terminal block supported |
| Environment | Clean indoor environment with no corrosive chemicals |
Practical Spec Analysis
The 32-input count is the headline feature. In a Modicon Quantum rack, that density reduces the number of cards needed per cabinet, which saves panel space and simplifies wiring schedules. The 40 terminals give each input a dedicated landing point, so technicians can trace and terminate field wiring without ambiguity.
Optocoupler insulation is equally important. It isolates the module’s internal circuitry from field-side transients, protecting sensitive logic from voltage spikes that commonly appear in industrial settings. With a maximum power consumption of 7.5 W, the module adds minimal load to the backplane power budget.
Where It Fits
This module suits clean indoor control rooms and electrical enclosures. Typical scenarios include:
- Process skids: Gathering discrete status signals from pumps, valves, and level switches.
- Manufacturing cells: Monitoring machine states and interlock feedback on a Quantum platform.
- Upgrade projects: Replacing aging input cards while keeping the existing Quantum rack and wiring philosophy.
Because the module operates from 0 to 40 degrees Celsius and tolerates up to 80% RH without condensation, it performs well in climate-controlled cabinets. Installations above 1000 meters require attention to the altitude limit.
Integration and Setup
The screw terminal block simplifies field connections and supports standard wiring practices. When integrating into a Modicon Quantum system, verify that the rack slot assignment and backplane power budget align with your existing configuration. If your network architecture includes fieldbus segments, confirm cable and gateway requirements with your supplier before commissioning.
Maintenance and Reliability
Optocoupler insulation reduces wear on internal components by buffering field transients. Schedule periodic inspections of terminal tightness and cabinet cleanliness, since the module is rated for clean indoor environments free of corrosive chemicals. Keeping the enclosure sealed and filtered protects the 7.5 W power stage and extends service life.
Selection Checklist
Before ordering, confirm your input voltage compatibility, rack slot availability, and terminal count requirements. The 140ERT85420 pairs with standard Modicon Quantum hardware. For hands-on technical selection help and fast dispatch, worldwide, contact Oil AutoTech today for pricing and availability.
