080G0284 Danfoss
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The Danfoss 080G0284 is part of the MCX Programmable Controllers series and features 14 analog inputs, 6 analog outputs, 18 digital inputs, and 15 digital outputs. It uses a 24 V AC power supply, includes two RS485 ports, and offers an LCD display with a resolution of 128 x 64 dots. The controller supports Ethernet via RJ45 port and has front protection rated at IP40.
Internal Product Review
The 080G0284 is a Danfoss MCX programmable controller with 18 digital inputs and 15 digital outputs. An RJ45 Ethernet port and 2 RS485 ports support efficient integration into distributed control architectures. High I/O density makes this controller an excellent choice for flexible automation and HVAC applications.
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Product Description:
The 080G0284 is a programmable controller produced by Danfoss for the MCX Programmable Controllers series. It serves as the central logic unit in chillers, heat pumps, and other HVAC assemblies where coordinated management of compressors, fans, and expansion valves is required. Through its onboard I/O, communication ports, and graphic LCD, the unit receives field signals, executes control algorithms, and issues commands to actuators. These capabilities allow an automation system to run duty cycles, monitor temperatures, and maintain energy efficiency.
The controller offers 14 analog inputs that accept sensors up to a 15 V limit, so transducers such as pressure transmitters or NTC probes can be wired directly without external scaling. For discrete sensing, it provides 18 digital inputs, enabling status feedback from safety interlocks and float switches. Command signals are returned to the plant through 6 analog outputs for modulating devices and 15 digital outputs for contactors or alarms. Two isolated RS-485 channels permit Modbus networking, and 2 EXV drivers support stepper-controlled electronic expansion valves. The apparent power requirement is 47 VA, which helps with transformer sizing, while an RJ45 Ethernet port is available for TCP/IP diagnostics or building management system integration. The SD/MMC card slot allows parameter backup, and the NTC reference is fixed at 10 kΩ at 25 °C for consistent temperature scaling.
The unit is powered by a 24 V AC supply, and its maximum power consumption remains within 30 W, so cabinet heat buildup remains low. A monochrome LCD with a resolution of 128 × 64 dots presents setpoints and fault codes. Front protection rated at IP40 shields the keypad from dust infiltration. Two RJ45 connectors share the enclosure face, with one used for Ethernet and the other used for service access. This arrangement keeps the remaining wiring area clear. The housing depth accommodates DIN rail mounting beside relays without congesting panel layouts.
