Schneider 140CPS42400C 8A Redundant Power Supply

Schneider 140CPS42400C 8A Redundant Power Supply

The 140CPS42400C power supply module delivers exceptional reliability for mission-critical automation systems within the Modicon Quantum series. Schneider Electric designed this unit specifically for applications where uninterrupted operation is non-negotiable. Its redundant output configuration ensures that connected I/O modules and processors receive stable power even if one supply path encounters issues.

This module accepts a wide DC input range from 48 to 60 V, matching common industrial battery banks and rectifier outputs. It produces a steady 5.1 V DC output at 8 A in a redundant arrangement, which significantly enhances system fault tolerance. The 140CPS42400C includes comprehensive internal protections against overvoltage and overload, safeguarding both the power supply itself and the downstream equipment.

Technical Specifications

The 140CPS42400C draws a maximum input current of 3.8 A under normal load conditions. During power-up, it experiences an inrush current of 14 A at 40 V, which lasts only a few milliseconds. A 2 A time-lag fuse handles these transient spikes effectively without unnecessary interruption. The hold-up time measures 13 ms at 48 V, providing a crucial buffer that prevents system resets during short voltage dips or switchovers.

On the output side, the module delivers 5.1 V DC at 8 A in a redundant configuration. This design allows two power supplies to work in parallel, each capable of taking over if the other fails. The alarm output is a normally closed (NC) contact rated for 6 A at 220 V, which you can connect to a PLC input or a central alarm panel. Furthermore, a green PWR OK LED offers clear local status indication, turning on when the output is within specification. Total power dissipation reaches 17.2 W, which supports efficient heat management inside the enclosure.

Mechanical and Environmental Parameters

The 140CPS42400C weighs approximately 0.5 kg net and fits neatly into a standard Modicon Quantum rack slot. Its compact form factor leaves ample space for adjacent I/O or communication modules. The unit carries the CE mark, affirming compliance with European safety and electromagnetic compatibility directives. Operating temperature spans 0°C to 60°C, while storage ranges from -25°C to 85°C. Relative humidity tolerance goes up to 95% non-condensing, making it suitable for both clean control rooms and semi-outdoor industrial shelters.

Installation and Wiring Guidance

Installing the 140CPS42400C follows a simple procedure. Begin by aligning the module with the chosen slot on the Quantum backplane and pushing it firmly into place. Secure it using the two retaining screws to prevent loosening from vibration. Next, connect the DC input wires to the designated terminals, ensuring correct polarity—reversed connections can permanently damage internal circuits. For the input current of 3.8 A, use cables with adequate cross-section to minimize voltage drop over longer runs.

For the alarm output, wire the NC contact to your supervisory system. This contact remains closed during normal operation and opens only when a fault condition occurs, such as output undervoltage or over-temperature. After completing all connections, apply input power and observe the green LED. If the LED fails to light, check the input fuse, input voltage level, and wiring integrity before proceeding with diagnostics.

Packaging and Shipping

Your order for the 140CPS42400C includes the power supply module and a concise installation leaflet. The package does not contain mounting hardware, external fuses, or configuration cables. We ship all orders via FedEx, UPS, or DHL, with real-time tracking available from dispatch to delivery. Each unit is packed in anti-static material and foam-padded to withstand typical shipping vibrations.

Frequently Asked Questions (FAQ)

Q1: What makes the 140CPS42400C output "redundant"?
A: The redundant design means you can connect two units in parallel. If one fails, the other continues supplying the full 8 A load without interruption.

Q2: Can I use the 140CPS42400C with a 24V DC input source?
A: No. The module strictly requires 48–60 V DC input. Operating outside this range may prevent startup or cause unstable output.

Q3: How do I test the alarm output functionality?
A: Temporarily reduce the input voltage below the minimum threshold. The NC contact should open, triggering your external alarm circuit.

Q4: Is the internal fuse replaceable by the user?
A: No. The 2 A time-lag fuse is soldered internally. Contact Schneider Electric service if the fuse blows repeatedly.

Q5: What does the green LED indicate exactly?
A: The PWR OK LED confirms that the output voltage is within tolerance and the module is operating normally. If it is off, check input power and internal protections.