Schneider Electric 140CRA21220C DIO Drop Interface
Product Introduction
The 140CRA21220C is a robust DIO drop interface. It belongs to the Modicon Quantum product line. This module connects distributed I/O drops to the main controller. Two redundant ports improve system availability significantly.
You can power this device with a 24 VDC supply. The acceptable voltage range runs from 20 to 30 V. Therefore, it tolerates minor fluctuations in industrial settings. Inrush current can reach 30 A without damaging the module.
Moreover, the 140CRA21220C provides a 5.1 V output at 3 A. This powers connected field devices reliably. Short-circuit and overvoltage protections are built directly into the hardware. Consequently, you get safer and more durable operations.
Technical Specifications
Specifically, the two redundant ports support fiber or copper connections. If one link fails, the other takes over immediately. The buffer time of 1 ms prevents data loss during switchover.
Additionally, the 140CRA21220C includes a conformal coating. This protects the PCB from moisture and dust. You can use it in harsh environments with confidence.
Protection and Environmental Parameters
The module offers both short-circuit and overvoltage protection. These features activate automatically when faults occur. Power dissipation stays at 11 W under normal load.
For altitude, this interface works up to 5000 meters. That is higher than many industrial modules. Humidity tolerance reaches 95% without condensation. Thus, it suits tropical or humid climates.
Furthermore, the protective treatment extends product lifespan. It resists corrosion from airborne contaminants. The operating temperature range follows standard Quantum specifications.
Frequently Asked Questions (FAQ)
1. What is the main function of the 140CRA21220C?
This module acts as a DIO drop interface for Modicon Quantum. It links remote I/O drops to the main controller using redundant ports.
2. Can I use this module without the redundant ports connected?
Yes, you can use only one port for basic operation. However, you lose the automatic failover benefit provided by the second port.
3. How does the overvoltage protection work on the 140CRA21220C?
The protection circuit clamps voltage spikes above 30 V. It then disconnects the input temporarily to prevent damage.
4. What happens if the inrush current exceeds 30 A briefly?
The internal fuse rated at 2.5 A may blow. Always use a proper external power supply with current limiting.
5. Is the conformal coating necessary for indoor use?
It is not strictly required but highly recommended. The coating prevents failure from accidental spills or high humidity.
