Danfoss – AK‑CC 550A (084B8030) – 230 V Case/Room Controller with MODBUS

The Danfoss AK‑CC 550A (part number 084B8030) is a high-performance case/room controller designed for industrial refrigeration applications. It features adaptive superheat and defrost control, designed to optimize energy usage for single or multiple evaporator setups, including CO₂ systems. Equipped with five configurable relay outputs and support for up to six RTD sensors, it offers full HVAC control including fans, lights, defrost, alarms, electronic valves, and cleaning cycles, with an integrated 4-digit display and MODBUS communication.

Key Features:

• Model / P/N: AK‑CC 550A (084B8030)  

• Supply Voltage: 230 V AC, 50/60 Hz, ≈5 VA consumption  

• Control Outputs: 5 relay outputs & electronic expansion valve (AKV) control  

• Sensor Inputs: Supports 1–6 Pt1000/PTC temperature sensors, ±0.5 K accuracy in –35 … +25 °C range  

• Key Functions:

  • Temperature control (thermostat & alarm)

  • Adaptive superheat (ALC/CALM) and defrost management

  • Fan, light, alarm, door and cleaning cycle control  

• Communications: RTU MODBUS, optional Danfoss DanBUS or LON integration  

• Interface: Built-in digital display with front‑panel buttons for setup

• Construction: DIN‑rail or wall mount; screw‑terminal connectors; IP20 enclosure; ~530 g