![Johnson Controls CH-PCX2721-0 Expansion I/O, 8 UI 2 AO [Refurbished]](https://cdn11.bigcommerce.com/s-hdj6s/images/stencil/500x659/products/70136/144961/88992d81-a064-5be3-bb82-80a79e34d967__26505.1792719765.png?c=2 "Johnson Controls CH-PCX2721-0 Expansion I/O, 8 UI 2 AO [Refurbished]")
Description
. . . . . The Johnson Controls PCX2721-0 is a 10-point expansion input/output module for the Facility Explorer FX-PC Series. It provides eight universal inputs and two analog outputs, and is used to increase the number of field points connected to an FX-PCA, FX-PCG or FX-PCV programmable controller, or to a supervisory controller, without replacing the controller itself.
The module communicates over a single RS-485 port and operates on either BACnet MS/TP or the Johnson Controls N2 bus, acting as a BACnet Application Specific Controller (B-ASC) on the field bus. Because the eight inputs are universal, each can be configured for the signal type the application needs - resistive temperature elements, voltage or current transmitters, or dry contact status - rather than being fixed to one input type. The two analog outputs drive modulating devices such as valve and damper actuators. Supply power is 24 VAC.
Expansion modules of this kind are the standard way to handle a controller that has run out of points: the existing control logic and field wiring stay in place, and the additional inputs and outputs are added on the bus.
* Brand / Manufacturer: Johnson Controls
* Model / Part Number: CH-PCX2721-0 (Johnson Controls literature: FX-PCX2721-0)
* Series: Facility Explorer FX-PC Series expansion input/output modules
* Product Type: Expansion input/output module
* Total Points: 10
* Universal Inputs: 8
* Analog Outputs: 2
* Communication: BACnet MS/TP or N2, 1 x RS-485 port (BACnet B-ASC)
* Supply Power: 24 VAC
* Compatible Controllers: FX-PCA, FX-PCG, FX-PCV programmable controllers, or a supervisory controller
Typical applications include adding sensor and actuator points to an air handling unit, central plant or zone controller that has reached its onboard point capacity - for example extra temperature and pressure inputs plus additional modulating valve or damper outputs.. Johnson Controls. Johnson Controls. CH-PCX2721-0.
Warranty Information
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