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Related Products |
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Literature: Products |
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b4920 Controller/ BACnet Router |
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 A Native BACnet Controller perfect for control of large air handling units
and other mechanical plant equipment.
The Continuum® b4920 is a unique, powerful system controller that also functions as a
native BACnet router for an RS-485 sub-network of up to 127 BACnet MS/TP devices, such as the
Continuum b3850 VAV controller, or third-party MS/TP devices. The b4920 is a native BACnet Advanced
Application Controller (B-AAC) that communicates directly on an Ethernet IP network as a
BACnet Master device.
Designed for control of larger Air Handling Units, chillers, boilers, and other
mechanical plant equipment, the b4920 features plenty of dynamic memory for application
programs as well as for expanded local data logging of critical data. The b4920 also features
a fast 32-bit processor, universal inputs, override switches on all outputs, two-piece connectors,
and an optional 4-line display with keypad. The b4920 also has an additional room sensor input, which
supports TAC’s Smart Sensor, or any standard room temperature sensor.
As a native BACnet controller, the b4920 series can communicate with all other BACnet devices on the
Ethernet network, and attached MS/TP sub-networks, in strict accordance with ASHRAE standard 135-2001.
The b4920 can share and gather data from the wider Ethernet/IP network of controllers. Among those Ethernet
controllers can be Continuum controllers (BACnet or Infinet) or third-party BACnet/IP devices. All
TAC
devices, both BACnet and Infinet, are fully compatible with the Continuum CyberStation front-end software,
a fully native BACnet workstation application.
Increased Reliability with Flash Memory
The b4920’s non-volatile Flash memory stores your operating system and application programs, so that in the event of a power loss, your application will be restored when power is returned. In addition, the Flash memory allows for easy upgrades of your operating system via software downloads, eliminating the need to swap out proms. The b4920 controllers include an on-board battery to safeguard your runtime data — protecting all point data and log data from being lost if power is removed.
b4920 Data Sheet
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