Schneider Electric

140CPS12420

Modicon Quantum – 5.1 VDC Backplane Power Supply

1. General Information

• Manufacturer: Schneider Electric

• Part Number: 140CPS12420

• Series: Modicon Quantum PLC

• Type: Rack‑mount backplane power supply (standalone & redundant capable)

• Output: 5.1 VDC (logic power for Quantum backplane)

• Application: Supplies 5.1 VDC to CPU, I/O, and backplane logic; can run single unit or 1+1 redundant pair.

• Coating: Non‑coated (standard)

2. Electrical Specifications

Input

• Voltage: 115 / 230 VAC (dual range)

  • 93–138 VAC (115 V range)

  • 170–276 VAC (230 V range)

• Frequency: 47–63 Hz

• Input Current:

  • 115 VAC: 1.1 A typical

  • 230 VAC: 0.6 A typical

• Inrush Current:

  • 115 VAC: 38 A

  • 230 VAC: 19 A

• Fuse: 2 A slow‑blow (external)

• Rated Power: 130 VA

Output

• Voltage: 5.1 VDC ±1% (regulated)

• Current (@60°C):

  • Standalone: 11 A continuous

  • Redundant pair (2 units): 10 A continuous per unit (20 A total)

• Power Dissipation: 6 + (1.5 × Iout) W (Iout in A)

• Ripple & Noise: < 50 mV typical

• Harmonic Distortion: ≤ 10% of fundamental RMS

Protection & Signaling

• Overvoltage (OVP) – internal

• Overload (OLP) – internal

• Short‑circuit (SCP)

• Overcurrent (OCP)

• Thermal shutdown

• Alarm Output: 1 × NC contact, 6 A / 220 V (power fail)

• Local Indication: Green “PWR OK” LED

3. Environmental & Mechanical

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −40 °C to +85 °C

• Relative Humidity: 95% RH max, non‑condensing

• Altitude: Up to 5,000 m

• Protection Class: IP20 (indoor use)

• Mounting: 1 slot in Modicon Quantum backplane

• Weight: Approx. 0.65 kg

4. Key Features

1. High‑current 5.1 VDC supply: 11 A standalone / 10 A redundant per unit.

2. Universal 115/230 VAC input for global use.

3. Dual‑mode operation: works as single supply or 1+1 redundant pair.

4. Green “PWR OK” LED + NC alarm contact for status monitoring.

5. Built‑in fault protection: OVP / OLP / SCP / thermal shutdown.

6. High efficiency: ≥ 90% typical.

5. Certifications

• CE

• UL 508

• CUL / CSA C22.2 No 142

• FM Class 1 Div 2

• RoHS compliant

6. Ordering Notes

• 140CPS12420: 5.1 VDC, 11 A standalone / 10 A redundant, non‑coated

• Difference from 140CPS12400: This is higher current model (11 A vs 8 A), supports standalone use.