Operating Algorithm

The device supports two control modes, which can be switched using a toggle switch on the front panel:

1. Manual Mode
   • Operational control is performed directly from the front panel of the cabinet. The Start/Stop buttons are used to start and stop the fan. The current system status is displayed via LED indicators.
2. Automatic Mode
   • Fan operation is controlled by external signals coming from:
   • The fan can be activated in automatic mode in two ways:
   • Fire control panel (FCP);
   • Fire alarm control panel (FACP) of any modification;
   • Remote start devices (RSD).
3. Via an external power source. A control voltage of 24 VDC is supplied to the cabinet terminal block — For example, from the potential output of the control panel or fire alarm control panel.
4. Using the built-in power supply. 24 V is supplied after closing an external dry contact – for example, through the potential-free output of the control panel/fire alarm control panel or the contacts of the fire alarm control panel.

Motor Stop

The electric motor is switched off in the following situations:

• when the control voltage is removed from the cabinet terminal block;
• when the mode switch is moved to the "Lock" position.