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AS-UNT1126-0

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The Johnson Controls AS-UNT1126-0 Controller is a digital unit that is part of the company's UNT1100 Series. It is used to manage single-zone HVAC systems that have a single terminal unit, such as air handlers, packaged rooftop units, unit ventilators, fan coils, and heat pumps. The HVAC systems in commercial and industrial buildings may be controlled and monitored with the help of this controller. The AS-UNT1126-0 controller has six analog inputs for precise measurement and monitoring of temperature, pressure, or other analog parameters through 1K ohm RTD, 0-10 VDC, or 0-2 VDC signals. It also accepts six binary inputs from external devices or sensors through 24 VAC dry contact signals through its six available inputs. The controller has two analog outputs that can supply 0-10 VDC signals at 10 mA each, allowing for the regulation of devices like variable speed drives and dampers that use such inputs. It also has six binary outputs in the form of 24 VAC Class 2 2A relays, making it easy to toggle loads or trigger other devices. The Class 2 transformer that powers the AS-UNT1126-0 accepts an input voltage between 20 and 30 VAC at either 50 or 60 Hz. Excluding the power needed for relays and valves, its maximum consumption is 7 VA. Environments with temperatures between -40 and 60 degrees Celsius (-40 and 140 degrees Fahrenheit) are supported. The controller is compatible with the Metasys® N2 communications bus, allowing for simple two-wire plus reference connection with network supervisory controllers. In addition, 1/4" spade lugs are used for terminations, and screw terminals that may be plugged over the spade lugs are provided as an alternative for various wiring arrangements. There are two choices for installing the AS-UNT1126-0 controller: screwing it to a surface or mounting it on a DIN rail.

Technical Specifications for AS-UNT1126-0

Manufacturer:Johnson Controls
Analog Inputs:6 (1K ohm RTD, 0-10 VDC, 0-2 VDC)
Binary Inputs:6 (24 VAC Dry Contact)
Analog Outputs:2 (0-10 VDC @ 10 mA)
Binary Outputs:6 (Class 2 -- 2A relay @ 24 VAC)
Supply Voltage:20-30 VAC at 50 or 60 Hz Class 2 transformer
Power Consumption:7 VA maximum (relay and valve requirements not included)
Ambient Operating Conditions:-40 to 60°C (-40 to 140°F)
Ambient Storage Conditions:-40 to 70°C (-40 to 158°F)
Terminations:1/4 in spade lugs (except communications: screw terminals)
Optional Terminations:2 or 3 position removable screw terminals that plug over spade lugs
Controller Addressing:DIP Switch (N2 only) use Addresses 1-253. Addresses 0, 254, 255 reserved.
Mounting:Surface mount using screws or DIN rail

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Rockwell Disclaimer: The product is used surplus. PDF Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because PDF Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, PDF Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. PDF Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. PDF Supply also makes no representations as to your right to install any such firmware on the product. PDF Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.