Batterie de six ventilateurs EC montés en mur, raccordés à une passerelle EC-MULTI : mesure de pression en bleu, signal de pilotage en jaune, bus de communication en vert
/09.05.2025

Centralised control of an EC fan wall with a Modbus TCP / BACnet IP gateway (EC-MULTI)

Controlling several EC fans individually complicates settings and wiring. Our single gateway, compatible with Modbus TCP, BACnet IP or 0: 10 V, simplifies everything by managing up to 16 fans in total (supply and extract combined).

Simplified control

Thanks to this interface, just one 0: 10 V analogue setpoint or bus command adjusts the airflow simultaneously (per air stream) for all the EC fans in the wall. No more manual adjustments and individual configurations: a single setpoint centralises your ventilation needs.

Supervision and diagnostics per fan

Each fan is equipped with:

  • A pressure sensor to measure and report the supply or suction pressure in real time.
  • 1 fault contact to instantly report any motor fault.

This information is converted into Modbus registers or BACnet points, accessible from your BMS or controller.

Guaranteed service continuity

With individual fault-status monitoring, you can:

  • Pinpoint the failed fan
  • Replace or repair the affected unit without stopping the whole system
  • Ensure continuous, safe ventilation, even in the event of an incident
  • Advanced alarms: two configurable digital outputs distinguish urgent from non-urgent alerts depending on the number of fans in fault (degraded mode).

Key benefits

  • Unified airflow setpoint (per air stream) for all fans
  • Fan-by-fan diagnostics
  • No system-wide shutdown if a single unit fails
  • Control and view your parameters (airflows, K factor, degraded mode, etc.) in real time from your smartphone, thanks to the built-in Wi-Fi access.
Schéma d'un mur de ventilateurs EC piloté par un module EC-MULTI, avec les liaisons de pression, de filtrage et de bus

The gateway used here is described on the EC-MULTI page.