Here is an expanded introduction for the MELSEC Q Series Input Module QX21L:

Product Name: MELSEC Q Series High-Performance AC Input Module (Model: QX21L)

Description:

The QX21L is a high-density AC input module designed as a direct replacement for the legacy A Series large-type module (Model: AX21). It is part of the Mitsubishi Electric MELSEC Q Series, offering enhanced reliability, compact design, and improved system integration for industrial automation applications.

Key Specifications:

●Input Points: 32 points

●Rated Input Voltage: AC 200–240V

●Rated Input Current: 10 mA (at AC 100V, 60 Hz)

●Response Time: 25 ms or less (typical)

●Common Configuration: 32 points per common terminal

●Terminal Block: 38-point terminal block for easy wiring

Features & Benefits:

●Wide Voltage Range: Supports AC 200–240V input, making it suitable for global industrial power systems.

●High Noise Immunity: Designed for stable operation in electrically noisy environments.

●Fast and Reliable Response: With a response time of 25 ms or less, it ensures timely signal detection for process control.

●Easy Replacement: Pin-to-pin compatible with the A Series AX21 module, simplifying upgrades without major rewiring.

●Space-Saving Design: High-density 32-point input in a compact module reduces cabinet space.

●Robust Construction: Built for long-term durability in demanding factory floor conditions.

Typical Applications:

●AC voltage sensing in manufacturing lines

●Monitoring of motor starters, contactors, and solenoid valves

●Replacement and upgrade of legacy A Series systems

●General-purpose AC input interfacing for PLC-based automation

This module is ideal for users seeking to modernize their control systems while maintaining compatibility with existing wiring and field devices.