Product Description
. . . . . Johnson Controls FX-PCA4911-0 28-Point PCA with Integral Real-Time Clock and 24 VAC Supply Power - PCA Series controllers are programmable controllers that can communicate through BACnet Secure Connect (BACnet/SC), BACnet/IP, MS/ TP, or N2 communications protocols, depending on the model. The PCA4911 Series controller communicates through BACnet/IP or BACnet/SC communications protocols. All other PCA Series controllers, except the PCA4911, can switch between MS/TP and N2 communications protocols. PCA series controllers in BACnet/IP, BACnet/SC, or BACnet MS/TP communication mode are BACnet network-compliant devices. PCA Series controllers feature an integral real-time clock and support time-based tasks, which means these field controllers can monitor and control schedules, calendars, alarms, and trends. PCAs can continue time-based control and monitoring when offline for extended periods of time from a system network. The PCAs include RS-485 field bus networking with BACnet MS/TP protocols. You can combine PCA controllers with PCX Expansion I/O modules to gain more I/O interfaces. You can use PCAs and their advanced features to monitor and control a wider range of more complex equipment, such as air handlers and central plants. PCA Series controllers can also operate as standalone controllers in applications that do not require a networked supervisory device or for network applications where you perform scheduling, alarming, or trending performed locally in the field controllers.. Johnson Controls. Johnson Controls. FX-PCA4911-0.