Schneider 140ERT85420 Multifunction Input Module

Schneider Electric 140ERT85420 Multifunction Input Module

The 140ERT85420 belongs to Schneider Electric’s well-known Modicon Quantum series. This multifunction input module handles up to 32 inputs through 40 terminals. Its design focuses on reliable performance in industrial control systems.

Key Technical Specifications

The 140ERT85420 uses optocoupler insulation for better circuit protection. Maximum power consumption is only 7.5 W, which helps keep energy costs low. Operating temperature ranges from 0°C to 40°C. Storage temperature goes up to 50°C.

Additionally, this module supports a maximum operating humidity of 80% RH without condensation. Storage humidity also reaches 80% RH under the same conditions. The device works best in a clean indoor environment. Avoid exposing it to corrosive chemicals.

Moreover, the 140ERT85420 functions properly at altitudes up to 1000 meters above sea level without derating. Storage altitude remains the same at 1000 meters. A screw terminal block is supported for easy wiring connections.

Mechanical and Environmental Parameters

For mechanical reliability, the module uses robust components. Its housing protects internal circuits from dust and light vibration. However, this device is not rated for outdoor or harsh chemical environments.

Furthermore, the operating altitude limit of 1000 meters ensures stable input signal reading. Above this level, performance may degrade. Therefore, always check your installation height before mounting.

Installation Guidelines

First, ensure the power supply is turned off before handling the 140ERT85420. Next, mount the module securely inside a clean control cabinet. Use the screw terminal block to connect field devices to the 40 terminals.

Then, verify that each of the 32 inputs receives the correct signal type. The module accepts various input sources thanks to its multifunction design. Finally, power on the system and test each input channel individually.

For instance, you can connect sensors, switches, or push buttons directly to the terminals. The optocoupler insulation prevents electrical noise from affecting the backplane. Therefore, signal integrity stays high even in industrial settings.

Packaging List

• 140ERT85420 multifunction input module (1 unit)

• Screw terminal block (pre-installed)

• Product label with EAN 3595864146225

• Quick start guide (printed)

Note: No certificates or warranty documents are included in the package.

Shipping Information

All orders ship via Fedex, UPS, or DHL. Delivery times depend on your location. Tracking numbers are provided after dispatch.

Frequently Asked Questions (FAQ)

1. What is the main function of the 140ERT85420?
This module captures 32 input signals from field devices. It then sends these signals to the Modicon Quantum backplane for processing.

2. Can I use the 140ERT85420 outdoors?
No. The operating environment must be clean and indoor. Avoid corrosive chemicals and direct sunlight.

3. How do I connect wires to the 40 terminals?
Use the integrated screw terminal block. Each terminal accepts solid or stranded wire up to 1.5 mm².

4. Does the module work above 1000 meters altitude?
Operation above 1000 meters requires derating. Schneider Electric recommends staying at or below 1000 meters for full performance.

5. What happens if humidity exceeds 80% RH?
Condensation may form inside the module. This can cause short circuits or signal errors. Always control humidity levels.