140EHC20800SC Counter Module | 500 kHz Schneider Electric

The Schneider Electric 140EHC20800SC is a high-speed counter module for the Modicon Quantum platform. It delivers precise counting for fast-moving industrial processes. This module handles complex counting tasks with exceptional speed and accuracy.

Core Technical Specifications

• Brand & Model: Schneider Electric 140EHC20800SC
• Product Type: High-Speed Counter Module
• Counting Frequency: Up to 500,000 Hz for ultra-fast signals.
• Input Types: Accepts incremental or quadrature encoder inputs.
• Discrete Outputs: 4 outputs using FET technology.
• Output Current: 0.5 A per output for driving external devices.

Electrical & Protection Features

• Power Supply: Requires 19.2 to 30 V DC external power.
• Input Resistance: 10 kOhm for discrete input signals.
• Leakage Current: Low 0.4 mA maximum in the OFF state.
• Short-Circuit Protection: 2.5 A blown fuse protects outputs.
• Overvoltage Protection: 36 V transorb protection on outputs.

Environmental & Operational Ratings

• EMC Resistance: 9.1 V/m resistance to electromagnetic fields.
• Operating Altitude: Suitable for installations up to 5000 meters.
• Designed for reliable performance in industrial environments.
• Robust construction ensures stable counting in electrical noise.

Integration & Application

• Platform: Part of the proven Modicon Quantum automation series.
• Primary Use: High-speed counting, position tracking, and speed measurement.
• Ideal for applications with rotary encoders and pulse generators.
• Enables precise monitoring in manufacturing, packaging, and material handling.

Frequently Asked Questions (FAQ)

What is the main function of the 140EHC20800SC module?

This module provides high-speed counting for fast digital signals. It is perfect for monitoring encoder outputs, counting pulses, and measuring rotational speed.

What is the difference between incremental and quadrature input?

Incremental input counts simple pulses. Quadrature input reads two-phase signals from encoders to determine both count and direction of rotation.

How fast can this counter module operate?

The 140EHC20800SC can count signals at an extremely high frequency of 500,000 cycles per second (500 kHz).

What external power supply do I need?

You need a 24V DC power source, but the module accepts a range from 19.2V to 30V DC for flexibility and stability.

What can the 4 discrete outputs control?

The outputs can control small relays, indicator lights, or send signals to other devices. Each output can handle a load current of 0.5 Amps.

Is this module suitable for noisy factory environments?

Yes, it has strong resistance to electromagnetic interference (9.1 V/m), making it reliable for use near motors and heavy machinery.

Can I use this for simple on/off counting, or is it only for complex tasks?

You can use it for both. It handles simple total counts and complex directional/speed measurements from quadrature encoders with equal precision.