140CPS11420 Schneider Quantum Power Supply | 115/230V AC

Global PLC Spare HUB Insight

The 140CPS11420 by Schneider Electric is a high-performance powerhouse within the Modicon Quantum architecture. This module offers dual operational flexibility: it can function as a standalone unit for localized racks or in a summable configuration to support high-density, multi-rack processing needs. We emphasize the 140CPS11420 for large-scale automation where total current requirements exceed 11A. Its built-in alarm output (NC contact) is a critical diagnostic feature, providing immediate relay-based feedback to the system if a power fault occurs, thus enhancing the overall availability of your safety and control loops.

Engineering Specifications

• Manufacturer: Schneider Electric
• Model: 140CPS11420
• Series: Modicon Quantum Automation Platform
• Input Voltage: 115V AC / 230V AC (Auto-ranging)
• Output Voltage: 5.1V DC
• Peak Output Current: 11 A (Standalone) / 20 A (Summable)
• Alarm Output: 1 NC contact (6 A @ 220 V) for fault detection
• Power Dissipation: 6 + (1.5 × Iout) Watts
• Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)

Diagnostic Capability & Application Utility

• Dynamic Capacity: Automatically scales current delivery based on load requirements when configured in summable mode.
• Fault Relay: Features a dedicated alarm contact that allows your supervisory system to detect power supply integrity issues before they lead to system downtime.
• Resilience: Built to withstand harsh electromagnetic interference (tested at 10 V/m) and high-altitude operation (up to 5000m).
• Application Suitability: Ideal for power-intensive PLC racks, large-scale distributed I/O systems, and critical infrastructure projects.

Shipping & Quality Assurance

• Global Logistics: Reliable worldwide transit through FedEx, UPS, or DHL.
• Lead Time: Orders are processed and dispatched within 24 to 48 hours.
• Performance Warranty: Every 140CPS11420 module includes a 12-month full-performance guarantee.
• Package Contents: 1x 140CPS11420 power module and documentation.

Professional FAQ

Question: Can I mix standalone and summable modules in the same backplane?

Answer: No, the configuration must be consistent across the backplane to ensure proper load sharing and electrical stability.

Question: How does the alarm output (NC contact) interact with the PLC logic?

Answer: The 6 A NC contact should be wired to a discrete input module; when the power supply fails, the circuit opens, allowing the PLC to execute a controlled shutdown.

Question: Why is the inrush current so high (38 A) at 115 V?

Answer: This is standard for high-capacity industrial supplies; ensure your upstream breaker is rated for this instantaneous current to prevent nuisance tripping.

Question: Does the module require derating at higher temperatures?

Answer: The unit is rated for full load output up to 60 °C (140 °F). If ambient temperatures exceed this, external cabinet ventilation is mandatory.

Question: When should I choose the "summable" mode over "standalone"?

Answer: Select "summable" mode only when you are connecting multiple power supplies in parallel to meet high current demands.

Procurement Advisory

• Cable Selection: Due to the 20 A peak output capacity, ensure that your internal bus cabling is adequately sized to prevent voltage drops.
• Integration Tip: Always verify the "Power OK" LED before finalizing your system commissioning; a dark LED combined with a closed NC alarm contact indicates a critical failure.
• Protection: Pair this module with a 2 A slow-blow fuse on the AC line to protect the primary side from grid-borne surges.

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