Schneider 140CPS21400C Quantum 24V DC Power Supply Module

Product Description

The 140CPS21400C from Schneider Electric is a DC-input power supply module developed for the Modicon Quantum PLC platform. It converts a 24 V DC input into a regulated 5.1 V DC output to power the Quantum backplane and installed modules.

This unit features a summable architecture, allowing multiple power supplies to operate in parallel and share load demand. This design is particularly useful in systems requiring higher current capacity or enhanced redundancy without replacing the existing rack infrastructure.

Engineered for continuous-duty industrial environments, the module integrates electrical protection, stable output regulation, and compliance with industrial EMC and safety standards.

Key Features

• 24 V DC input designed for industrial DC power systems
• Summable capability for load sharing across multiple modules
• Regulated 5.1 V DC output for PLC backplane power
• Built-in overvoltage and overload protection
• Power status indication via front-panel LED
• Compatible with Modicon Quantum automation systems

Technical Specifications

Electrical Input

• Input Voltage: 24 V DC (20–30 V DC range)
• Input Current: Approx. 3.8 A at nominal load
• Input Power Ride-through: ≥ 100 ms
• Reverse Polarity Protection: Not specified (external protection recommended)

Electrical Output

• Output Voltage: 5.1 V DC
• Output Current:
  • 8 A (summable configuration)
• Load Sharing: Supported via summable design

Protection & Diagnostics

• Overvoltage Protection: Internal
• Overload Protection: Internal
• Status Indicator: Green LED (PWR OK)

Environmental Conditions

• Operating Temperature: 0 °C to 60 °C
• Storage Temperature: –40 °C to 85 °C
• Humidity: Up to 95% (non-condensing)
• Maximum Altitude: 5000 m
• ESD Immunity: 4 kV contact / 8 kV air
• EMC Immunity: 10 V/m (80–2000 MHz)

Mechanical & Compliance

• Module Type: Standard Quantum form factor
• Approximate Weight: 0.65–0.9 kg (varies by source)
• Certifications: UL, CSA, FM Class 1 Division 2

Applications

The 140CPS21400C is suited for:

• PLC-based control systems requiring DC input power
• Redundant or load-sharing power architectures
• Process industries such as oil & gas, chemicals, and power generation
• Legacy Modicon Quantum installations requiring expansion or maintenance

FAQ

Q: What does “summable” mean for this power supply? A: It allows multiple units to be connected in parallel so their output currents combine, increasing total available power for the rack.

Q: Can this module replace AC-input Quantum power supplies? A: Only if the system provides a suitable 24 V DC input source. It is not a direct replacement for AC-input models without system redesign.

Q: Is this module still in production? A: It has been discontinued in many regions. Availability is typically through surplus or third-party inventory.