Product details
Danfoss AK-PC 551 Pack Controller | Compressor & Condenser Management
Product Description:
The Danfoss AK-PC 551 is an advanced system manager within the ADAP-KOOL range, specifically tailored for the regulation of up to 8 compressors and their associated condensers. In the UAE, where refrigeration systems face extreme thermal loads, the AK-PC 551 excels by providing smooth capacity control and suction pressure optimization, which directly translates to lower electricity bills. It features intelligent logic for compressor cycling, ensuring even wear and tear across the rack, while its built-in safety functions protect against high discharge temperatures and oil failures. Its versatile design supports various configurations, making it the standard choice for reliable cooling in Middle Eastern commercial and industrial facilities.
Key Features & Benefits:
- Comprehensive Rack Control: Manages both compressors and condensers in a single unit for a synchronized cooling strategy.
- Energy-Saving Algorithms: Integrated suction and condensing pressure optimization tailored for high-ambient UAE environments.
- Intelligent Cycling: Automatically balances running hours across compressors to extend equipment lifespan.
- Flexible Configuration: Supports various compressor types, including fixed speed, variable speed (VFD), and digital scrolls.
- Robust Safety Monitoring: Built-in protection for high pressure, low pressure, and oil level to prevent costly system downtime.
Technical Specifications :
| Specifications | Value |
| Manufacturer | Danfoss |
| Product Model | AK-PC 551 |
| Code Number | 080G0281 |
| Application | Compressor Pack & Condenser Control |
| Max. Compressors | Up to 8 Units |
| Supply Voltage | 24V AC / DC |
| Mounting | DIN Rail (Standard 10-module width) |
| Communication | MODBUS RTU / LON (via module) |
| Protection Class | IP 20 |
FAQs:
- Q: Can the AK-PC 551 manage variable speed condensers?
- A: Yes, it features dedicated analog outputs to provide speed reference signals to VFDs for condenser fans.
- Q: Is it suitable for CO2 (R744) systems?
- A: While primarily used for HFCs, it can be configured for certain subcritical CO2 applications. For transcritical CO2, the AK-PC 700 series is usually preferred in the UAE.
- Q: Does it have a built-in display?
- A: This version is typically used with an external plug-in display or configured via the Danfoss Service Tool for fast commissioning.






