Product Overview
Downtime on a Modicon Quantum rack rarely waits for a purchase order. The 140CPS11100C is the Schneider Electric power supply module that keeps that rack alive, converting a wide AC input into a stable 5.1 V DC rail for the backplane and its I/O. It belongs to the Modicon Quantum series and slots directly into the chassis, so a failed supply can be swapped without redesigning the panel.
For oil, gas and industrial automation sites, that matters. A single power module failure can idle an entire control cabinet, and the practical fix is a ready-to-ship spare rather than a long lead-time order.
Key Parameters at a Glance
The module accepts 120–230 V AC nominal input with a broad 100–276 V AC range, so it tolerates the voltage sag and swell common on plant distribution. Rated power is 50 VA, and harmonic distortion stays at or below 10%, which keeps the supply friendly to shared AC circuits.
Input current draws 400 mA at 115 V and 200 mA at 230 V. Inrush current reaches 20 A at 115 V and 10 A at 230 V, a level the internal circuitry is built to absorb at startup. On the output side, the module delivers 5.1 V DC at up to 3 A, enough to feed a populated Quantum backplane.
Protection is internal: both overload and overvoltage protection sit inside the unit, and a 1.5 A slow-blow fuse backs the input. A single green LED confirms PWR OK status at a glance during commissioning and routine rounds.
Where It Fits in the Field
Process control cabinets
A 3 A output at 5.1 V DC suits Quantum racks carrying mixed analog and digital I/O. The wide input range means the same module works on 120 V and 230 V feeds, simplifying spares strategy across plants with different distribution voltages.
Remote and unstable supply points
Wellhead sites and remote compressor stations often see poor power quality. The 100–276 V AC input range and 47–63 Hz frequency window let the 140CPS11100C ride through conditions that would trip a narrower supply.
Replacement and upgrade planning
When a legacy Quantum supply fails, matching the exact part number avoids backplane compatibility surprises. Keep one spare per critical rack and the swap becomes a scheduled task instead of an emergency.
Installation and Setup Notes
Mount the module in its Quantum backplane slot and confirm the AC feed matches the 120–230 V AC nominal rating before energizing. Check that the input fuse is the specified 1.5 A slow-blow type. After power-up, verify the green PWR OK LED before bringing I/O online. Wiring and configuration should follow the manufacturer’s documentation for this model.
Maintenance and Reliability
Inspect the module periodically for the green PWR OK indication and for signs of excess heat. Power dissipation follows 2 + (3 × Iout) W, so loading near 3 A raises cabinet temperature; keep ventilation paths clear. Because overload and overvoltage protection are internal, a tripped condition usually points to a supply or load problem rather than the module itself. Please verify current lifecycle status and availability with Oil AutoTech before ordering.
Sourcing the Right Spare
Confirm the part number, the Modicon Quantum product line and the 5.1 V DC output rating before you buy. Oil AutoTech offers hands-on technical selection help and fast dispatch, worldwide, for oil, gas and industrial automation spares. Contact Oil AutoTech today for pricing and availability.
