Danfoss 084B7104 EKC331 Controller

The Danfoss 084B7104 EKC331 Controller is a high-performance capacity controller engineered for precise regulation of compressors and condensers in small-scale refrigeration systems. This temperature regulation controller utilizes effective step control to manage up to four relay outputs, optimizing system load by comparing a pressure transmitter signal or temperature input against your set reference points. Built for the rigors of commercial HVACR environments, the Danfoss EKC 331 features a clear front-facing display for real-time monitoring and a robust Neutral Zone (NZ) mode to prevent unnecessary short-cycling. Integrating this electronic rack controller into your pack system ensures reliable operation through advanced features like night setback and heat recovery support via digital inputs. Whether you are performing a field replacement or a new installation, this unit supports AKS 32R pressure sensors and Pt1000 temperature probes, providing a versatile solution for refrigeration capacity control. Its 230V AC supply voltage and plug-in slot for data communication modules allow for seamless integration into existing control networks.

• Efficient Load Management: Precisely controls up to four compressors or condenser fans in steps to match system demand.
• Enhanced System Protection: Includes adjustable time delays and alarm functions for high and low pressure to safeguard equipment.
• Integrated Energy Savings: Supports a digital input for night setback, allowing the suction pressure to be raised during lower-load periods.
• Manual Override Capability: Features a dedicated manual control menu that allows technicians to force relays for troubleshooting and commissioning.
• Compact Design: Standard 230V 50/60Hz operation with a streamlined interface designed for quick DIN-rail mounting and setup.

How many relay outputs does the EKC 331 support for capacity steps?
The unit is equipped with four relay outputs, allowing it to control up to four compressors or five fans depending on the configuration and step-control logic selected.

Can I use this controller with both pressure and temperature sensors?
Yes, the 084B7104 is versatile and can be configured for capacity control based on either pressure transmitter signals (like the AKS series) or temperature sensor inputs.

What happens if the sensor signal is lost?
The controller features diagnostic codes (such as E1 and E2) to alert technicians when the regulation is out of range or if the control signal is defective, ensuring fast-fault detection.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.