X20CM2821
The B & R Automation X20CM2821 module is a robust member of the X20 Fieldbus Input Output Modules series, delivering reliable switching performance for demanding industrial automation tasks. Designed and manufactured by B & R Automation, this X20CM2821 unit features 8 outputs with relay-based Output Type switching, each channel rated at Nominal Output Voltage of 24 VDC. The module supports a dual-purpose maximum switching voltage of 30 VDC/250 VAC, enabling versatile interfacing with both DC and AC loads. With a compact Module Width of 37.5 mm and Mounting via standard DIN rail, this device integrates seamlessly into existing control cabinets.
Equipped for high-speed performance, the X20CM2821 achieves a typical Response Time (typ.) of 5 ms, ensuring prompt actuation in closed-loop control systems. Each of the Number Of Outputs channels can handle an Output Current Per Channel of 2 A, delivering a combined Switching Power (max) of 480 VA (AC) or 60 W (DC). The On-state Resistance is maintained at ≤ 100 mΩ, minimizing voltage drop across energized loads. Connection is facilitated via secure Connection Type of spring terminals, providing both reliable electrical contact and quick tool-free installation. These specifications ensure that the module can process real-time signals with precision and maintain stable operation under fluctuating load conditions.
Operationally, the module’s relay architecture offers complete electrical isolation between the control logic and load circuits, promoting safety and signal integrity in industrial environments. It operates reliably across an Operating Temperature Range of -25 °C to +60 °C, accommodating installations in both chilled and high-temperature zones. The compact 37.5 mm footprint helps conserve DIN rail space, while the module’s robust construction withstands typical industrial vibrations and electrical noise. Maintenance is simplified by the spring terminal design, which allows rapid wiring changes without specialized tools, reducing downtime during system upgrades or expansions.
Integration into fieldbus networks is streamlined through the X20 system’s flexible I/O architecture, enabling straightforward configuration alongside digital and analog modules. The module’s support for mixed-voltage applications—handling up to 250 VAC loads—makes it an ideal choice for controlling motors, lighting systems, heaters, pumps, and other actuators from a single platform. Engineers can leverage the X20CM2821’s compact form factor and DIN rail compatibility to optimize control cabinet layouts and streamline wiring harnesses. Its combination of fast response, high switching capacity, and electrical isolation ensures that the X20CM2821 excels in automated manufacturing cells, process control installations, and packaging machinery where precision and reliability are paramount.
