The Schneider 140CFH00800 Analog Input Block is an essential component designed for use with Modicon Quantum programmable logic controller (PLC) systems. It functions as a fused analog input terminal block, providing eight input channels, each protected by a dedicated fuse. This module is tailored to ensure reliable signal transmission while safeguarding the input lines from electrical faults. Built to industrial standards, the 140CFH00800 helps maintain system integrity in demanding automation environments.

Product Specifications

Applications

The 140CFH00800 Analog Input Block is widely used in industrial automation for the following purposes:

• Signal Protection: Its fused inputs protect the PLC system from overcurrent conditions and electrical faults, reducing downtime and equipment damage risk.

• Modicon Quantum Systems: Designed specifically to interface with Quantum PLC analog input modules, it simplifies wiring and improves system reliability.

• Analog Signal Management: Supports precise and reliable measurement inputs for process control applications.

• Industrial Environments: Provides shielding options to minimize electrical noise interference, essential in factories, plants, and harsh environments.

• Field and Loop Powering: Accommodates both field-powered and loop-powered sensor configurations.

Advantages

• Integrated Fuse Protection: Each channel has its own fuse rated at 0.063 A, which isolates faults to prevent damage spreading.

• Simplified Wiring: Four terminals per channel provide organized, clear wiring paths for signal, power, and shielding.

• Robust Construction: Durable casing and reliable captive screw terminals ensure lasting mechanical and electrical stability.

• Easy Installation: DIN rail mounting allows quick and secure panel installation.

• Noise Reduction: Shielding terminals support the reduction of electromagnetic interference, improving signal quality.

• Compatibility: Designed to seamlessly work with Quantum analog input modules, enhancing system modularity.

• Support and Warranty: Comes with Schneider’s standard 18-month warranty for peace of mind.

Frequently Asked Questions (FAQ)

1. How does the 140CFH00800 improve system safety?

   By providing individual fuses for each analog input channel, it limits the impact of electrical faults, preventing a single failure from affecting the entire system.

2. Can I use this input block with any Quantum analog module?

   It is designed specifically to work with Quantum analog input modules that support fused inputs, ensuring proper compatibility and performance.

3. What types of signals does this block handle?

   It manages analog signals, typically current or voltage inputs, protecting and routing them securely into the PLC system.

4. What happens if a fuse blows on one of the channels?

   Only the affected channel is disconnected, leaving the other channels operational. This helps maintain overall system stability.

5. How does the block support noise reduction in harsh environments?

   It offers shield terminals which allow proper grounding and shielding of analog cables to minimize electromagnetic interference.

6. Is installation complicated?

   Not at all — the block mounts on a standard DIN rail and uses captive screw terminals for straightforward, secure wiring.

7. What maintenance does the 140CFH00800 require?

   Regular visual checks for blown fuses and ensuring clean, tight terminal connections usually suffice for reliable operation.

8. If the product is discontinued, what are the options for replacement or upgrades?

   While this model is no longer manufactured, Schneider Electric offers other fused input blocks or modular I/O solutions that serve similar functions.

9. Does the block support both field-powered and loop-powered sensors?

   Yes, it has terminals configured to accommodate both types of sensor powering methods.

10. How durable is the block for industrial use?

    Built with robust materials and designed for industrial environments, it withstands vibration, temperature variations, and electrical noise typical in manufacturing plants.