X20CM0985-1
The B & R Automation X20CM0985-1 module is a key component in the X20 Fieldbus Input Output Modules series, designed for precise energy measurement and synchronization in industrial automation systems. It features 5 digital outputs with a nominal voltage of 24 VDC and 0.5 A total output current, as well as 8 analog inputs supporting a voltage range of ~480 V / 120 V at 16‑bit resolution. Additionally, the module offers 3 AC current inputs rated for 1 A / 5 A transformers and a 16‑bit resolution, enabling accurate monitoring of phase currents. Its primary function is the simultaneous measurement of two AC mains and two auxiliary networks, making it ideal for demanding industrial energy monitoring applications.
In terms of technical specifications, the X20CM0985-1 employs a unified 16‑bit converter resolution for both voltage and current channels, ensuring high fidelity measurement data. The module also includes one relay output (changeover contact) rated at 1 A with switching capacities ranging from 10 mA at 5 VDC up to 30 W at 240 VAC. Its digital outputs feature built‑in thermal shutdown protection against overcurrent and short circuits. The bus power consumption is 1.05 W, with an additional 4 W for internal I/O, optimizing energy efficiency. Special features include advanced software functions for data processing and the ability to utilize a digital output as a pulse encoder for external energy meters.
Additional features of the X20CM0985-1 include compatibility with both 3‑wire and 4‑wire AC systems and support for Aron measuring circuits, broadening its application scope. The module stores peak voltage and energy values in non‑volatile memory, ensuring data retention in power interruptions. Required terminal blocks include 0TB3102-7011, 0TB3104-7011, 0TB3102-7012, 0TB3104-7012, and 2x X20TB12, facilitating straightforward installation. Compact and robust, it withstands rigorous industrial environments while maintaining high accuracy and reliability. Employing this module enhances process transparency, reduces downtime, and delivers long‑term operational benefits in industrial applications.
