Schneider A020/ERW/24V Programmable Controller for Compact Automation

The Schneider A020/ERW/24V serves as a compact programmable controller for small automation tasks. You can mount this unit directly onto a DIN rail inside the control cabinet. It executes user logic and manages local I/O points efficiently. This controller suits machine control and simple process automation applications.

Technical Specifications and Hardware Layout

The Schneider A020/ERW/24V measures 90 mm in height. Its width reaches 60 mm, and the depth equals 55 mm. The Schneider A020/ERW/24V weighs approximately 0.25 kilograms. A single internal PCB holds the processor, memory, and power circuits. The unit contains no energy storage capacitors or batteries. One 9-pin D-sub port provides a programming and debug connection. One 16-pin terminal block handles built-in I/O wiring. Three status LEDs display power, run, and fault conditions.

Memory Capacity and I/O Specifications

The Schneider A020/ERW/24V provides 16 KB of user program memory. It handles up to 500 ladder logic instructions comfortably. This controller includes eight 24 V DC digital input channels. It also delivers six relay output channels for actuator control. Each relay output switches 2 A at 250 V AC or 30 V DC. Consequently, this unit controls small machines and conveyors effectively. The controller supports standalone operation without additional expansion modules.

Installation and Programming Features

You must mount the Schneider A020/ERW/24V on a DIN rail using the integral clips. Transitioning to programming, use Zelio Soft software via the serial port. The controller includes a built-in real-time clock for time-based functions. Three front LEDs show power, run, and fault status clearly. A built-in watchdog timer resets the processor on software hangs. The operating temperature range spans from 0°C to 55°C reliably.