Introduction

The Schneider Electric 140CPS12420 is a high-performance power supply module. It belongs to the Modicon Quantum automation platform. This module provides reliable power for PLC racks in redundant configurations. The 140CPS12420 ensures continuous operation even if one power source fails.

Technical Specifications

Input Characteristics

This power supply module accepts dual voltage ranges. Input voltage is 115 V (93-138 V) AC at 47-63 Hz . It also accepts 230 V (170-276 V) AC . Input current draws 1100 mA at 115V. At 230V, input current draws 600 mA . Inrush current reaches 38 A at 115V. At 230V, inrush current reaches 19 A . The associated fuse rating is 2 A, slow-blow . Harmonic distortion stays below 10 % of fundamental rms value .

Output Characteristics

The 140CPS12420 provides a stable 5.1 V DC output voltage. Power supply output current reaches 11 A at 60°C in standalone mode. In redundant mode, output current reaches 10 A at 60°C. Rated power in VA is 130 VA . Output overvoltage protection is internal. Output overload protection is also internal.

Power Dissipation and Alarms

Power dissipation follows the formula 6 + (1.5 x Iout) where Iout is in amps. The 140CPS12420 includes one alarm output. This output is a normally closed (NC) contact rated 6 A at 220 V for power supply faults.

Local Signaling and Markings

Local signaling includes one green LED. This LED shows power OK (PWR OK) status. The module carries CE marking as a key certification.

Environmental and Physical Data

Bus current requirement is not applicable for this power module. Module format is standard for the Quantum backplane. Net weight of the 140CPS12420 is 0.65 kg (1.43 lb) .

Ambient air temperature for operation is 32…140 °F (0…60 °C) . Storage temperature ranges from -40…185 °F (-40…85 °C) . Relative humidity reaches 95 % without condensation. Operating altitude goes up to 5000 m (16404 ft) .

Certifications and Standards

The 140CPS12420 complies with UL 508 and CSA C22.2 No 142 standards. Product certifications include cUL . Resistance to electrostatic discharge reaches 4 kV contact and 8 kV on air per IEC 801-2. Resistance to electromagnetic fields reaches 9.1 V/m (10 V/m) from 80 to 2000 MHz per IEC 801-3.

Installation Guidelines

Install the 140CPS12420 in the leftmost slot of the Quantum rack. Always power down the system before inserting or removing the module. Use a 2 A slow-blow fuse on the input line for protection. For redundant operation, install two power supplies on the same rack. Connect the alarm output to a monitoring system for fault detection. Verify the green PWR OK LED is steady after power-up.

Package Contents

• 140CPS12420 Power Supply Module (1 unit)

• Product documentation sheet

• Fuse replacement label

Frequently Asked Questions (FAQ)

1. Can the 140CPS12420 work with both 115V and 230V systems?
Yes, the 140CPS12420 automatically accepts both 115V AC and 230V AC inputs. No manual switching is required for voltage selection.

2. What is the difference between standalone and redundant output current?
In standalone mode, the 140CPS12420 provides 11A at 60°C. In redundant mode with two supplies, each provides 10A at 60°C for load sharing.

3. Does the 140CPS12420 have built-in overload protection?
Yes, this module includes internal output overload protection. It also has internal output overvoltage protection for safe operation.

4. How do I know if the 140CPS12420 is working correctly?
Look for the green PWR OK LED on the module's front panel. A steady green light means the power supply is functioning normally.

5. What is the maximum operating temperature for this power supply?
The 140CPS12420 operates safely between 32°F and 140°F (0°C to 60°C). Storage temperature ranges from -40°F to 185°F (-40°C to 85°C).