ECPro – Electronic Controller for Condensers, Dry Coolers and Gas Coolers

ECPro is SELPRO's electronic controller designed to regulate and manage EC fans in condensers, dry coolers, gas coolers and industrial cooling systems.

Unlike a general-purpose control platform, ECPro features built-in application-specific control logic for fan systems. OEM manufacturers can select the configuration that best suits their equipment and adjust the operating parameters without developing application software from scratch.

The controller manages varying load conditions, seasonal operating modes, night-time speed limitation, multiple fan banks and Wet & Dry applications. Its integrated functions include Low Capacity, Floating Setpoint, Digital Scroll, Auto Clean and configurable Fail Safe strategies.

ECPro provides three options for managing EC fans: analogue 0–10 V control, digital Modbus communication or individual fan connections via optional MFan modules.

Modbus communication provides access to operating and diagnostic data from compatible fans, while separate communication ports keep motor communication traffic independent from the Building Management System (BMS).

Thanks to its configurable inputs and outputs, integrated control functions and expansion capabilities, ECPro can be adapted to different system architectures.

Parameter configuration, operating checks and diagnostic activities are supported by SELPRO software tools, including browser-based access via the optional KLNK accessory.

A dedicated fan control platform, from equipment regulation to digital communication with individual EC fans.

Control and Regulation

• Built-in application-specific control logic and configurable parameters.

• Proportional and PID regulation.

• Management of multiple fan groups and control circuits.

• Low Capacity, Floating Setpoint and Digital Scroll functions.

• Night Mode, Winter Mode and Heat Pump operating modes.

• Wet & Dry and adiabatic cooling system management via dedicated expansion modules.

• Auto Clean and fan reverse rotation functions, where supported.

Inputs and Outputs

• 6 configurable analogue inputs: 0–5 V, 0–10 V, 0–20 mA, 4–20 mA, NTC, PTC and PT1000.

• 6 digital On/Off inputs.

• 3 independent 0–10 V analogue outputs.

• 4 relay outputs.

• 5 separate RS485 Modbus RTU communication ports.

Communication and Integration

• Analogue 0–10 V control and digital EC fan management.

• Modbus RTU communication for control, supervision and diagnostics.

• Compatibility with communication protocols from different EC fan manufacturers.

• Dedicated BMS port, separate from motor communication.

• Individual Modbus fan connections via optional MFan modules.

• Expansion modules available for additional I/O and adiabatic cooling management.

Protection and Diagnostics

• Configurable Fail Safe strategies.

• Separate handling of BMS and fan communication faults.

• Safe Guard, Cable Break and Thermal Stop functions.

• Access to operating data, status information and alarms from compatible fans.

• Individual fan diagnostics in supported system architectures.

Configuration and Installation

• Parameter configuration via local interfaces and SELPRO software tools.

• Browser-based access via the optional KLNK Wi-Fi accessory.

• Configuration storage and replication via KMEM.

• DIN rail mounting.

• Power supply: 24 Vac.

• Dimensions: 213 × 90 × 32.2 mm.

ECPro is designed for OEM manufacturers, system integrators and installers developing commercial and industrial refrigeration systems equipped with EC fans.

Main applications include:

• Remote condensers: Fan speed regulation according to condensing pressure and operating conditions.

• Dry coolers: Fan management according to temperature, cooling demand and ambient conditions.

• Gas coolers: Control of fan groups in refrigeration applications requiring dedicated regulation.

• Chillers and refrigeration units: EC fan management in systems operating under varying load conditions and different operating modes.

• Wet & Dry systems: Integrated fan control and adiabatic cooling management via dedicated expansion modules.

• Multi-bank and multi-coil systems: Coordinated control of multiple fan groups and regulation circuits.

• Industrial cooling systems: Fan regulation, BMS communication and access to diagnostic data for supervision and maintenance activities.