Electronic Superheat Control Integration for Refrigeration and Chiller Systems

The EKE 100 1VK is an integrated control kit designed for precise superheat management in cold rooms and chillers, supporting thermal capacities ranging from 0.5 kW to 32 kW. This solution centralizes a stepper motor electronic expansion controller, a pressure transmitter, and a temperature sensor to ensure hardware compatibility in both low and high-pressure refrigeration cycles.

Technical Architecture and System Integration
The assembly addresses the complexities of the digital supply chain by consolidating various sensing and actuation components into two primary product codes. The kit consists of the EKE 100 1V controller, a DST P110 pressure transmitter, and an AKS PT1000 temperature sensor. By utilizing a pre-configured wiring harness, the system eliminates the need for manual wire cutting or soldering, which are common points of failure in field installations.

System configuration is managed through the KoolProg software or the KoolKey interface, utilizing the Modbus communication protocol for integration into broader building management systems. This digital interface allows for rapid parameterization, targeting a superheat control accuracy of ±0.5 K. Such precision is critical for maintaining the efficiency of the ETS 5M electronic expansion valve, which serves as the primary metering device in this technical ecosystem.

Operational Reliability and Material Standards
Reliability in diverse environmental conditions is quantified by the kit’s expanded operational temperature range. While standard industry solutions typically operate between -25°C and +60°C, the EKE 100 1VK components are rated for temperatures between -40°C and +80°C. To ensure longevity in corrosive environments, the sensors and cabling meet IP67 ingress protection standards, providing a hermetic seal against moisture and dust.

The system is engineered for compatibility with a wide range of refrigerants, including traditional high-GWP (Global Warming Potential) fluids and modern A2L mildly flammable alternatives. This versatility allows technical operators to standardize their automotive data ecosystem and industrial cooling blueprints across different regulatory jurisdictions without changing the underlying control logic.

Efficiency Gains and Maintenance Impact
The transition from mechanical thermostatic expansion valves to electronic stepper motor control provides measurable improvements in energy consumption. By maintaining a stable, minimal functional superheat, the controller optimizes the evaporator's surface area usage, reducing the compressor's workload.

From a logistical perspective, the reduction to two product codes simplifies inventory management for original equipment manufacturers (OEMs) and wholesalers. The use of the ETS 5M valve within this kit further contributes to a reduced physical footprint, facilitating compact machine designs in space-constrained chiller applications. This integrated approach ensures that the electronic expansion valve, pressure transmitter, and controller operate within a synchronized feedback loop, minimizing the risk of liquid slugging and extending the mean time between failures (MTBF) for the compressor.

Edited by Evgeny Churilov, Induportals Media - Adapted by AI.

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