Danfoss – AK‑PC 840 (080Z0111) – Pack Controller for Refrigeration

The Danfoss AK‑PC 840 (ordered as 080Z0111) is a high-performance gathering (“pack”) controller designed for regulating capacity in medium to large-scale refrigeration and evaporator/condenser systems. It supports up to 12 compressors and 3 unloaders per compressor, and enables variable-speed control of one compressor via an AKD drive. The controller’s design integrates energy efficiency and flexible communication features, making it suitable for commercial cold storage, supermarket, and industrial cooling applications.

Key Features:

• Manufacturer: Danfoss Refrigeration

• MPN: 080Z0111 (AK‑PC 840 UK‑D‑F‑NL‑I)  

• Function: Compressor and condenser capacity control

• Max Compressors Controlled: 12 units + up to 3 unloaders each  

• Supported Drives: Variable-speed control via AKD drive on lead compressor  

• Controls & Outputs: 11 analog inputs, 8 digital outputs  

• Supply Voltage: 24 V AC/DC  

• Communication Interfaces: Built-in RS‑232 and RS‑485 (LON)  

• Approvals: CE, C‑UR‑US, C‑Tick, EAC  

• Power Consumption: ~8 VA

• Operating Frequency: 50/60 Hz  

• Weight: Approx. 0.645 kg