ADAM-4021 – 1-ch Analog Output Module with Modbus by Advantech

The ADAM-4021 from Advantech is a robust 1-channel analog output module designed for industrial automation and process control applications requiring precise analog signal generation over RS-485 networks. This versatile module supports both ASCII command and Modbus/RTU protocols, ensuring seamless integration with a wide range of industrial control systems and PLCs. The ADAM-4021 features exceptional 16-bit resolution with compatibility for 12-bit systems, delivering highly accurate analog outputs with ±0.2% accuracy for current output and ±0.1% accuracy for voltage output. Users can select from multiple output ranges including 0-20 mA, 4-20 mA for current outputs, and 0-10 V for voltage outputs, providing flexibility for various control scenarios. The programmable output slope feature allows controlled ramping between 0.125-128 mA/sec for current and 0.0625-64.0 V/sec for voltage, enabling smooth transitions critical in process control applications. Industrial-grade reliability is ensured through 3,000 VDC isolation voltage protection, a 1.6-second system watchdog timer, and robust operation across -10 to 70°C temperature range. The module accepts unregulated 10-30 VDC power input with efficient 1.4 W consumption at 24 VDC. With its compact design featuring plug-in terminal blocks supporting 14-22 AWG wiring, the ADAM-4021 is well-suited for factory automation, building management systems, HVAC control, and industrial process monitoring where reliable analog output control is essential. RoHS compliant construction ensures environmental compliance for modern installations. Available from Recab, your Nordic partner for Advantech industrial I/O solutions.