8’ - 24’ POWERFOIL® X
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8’ - 24’ POWERFOIL® X
Basic Distributed I/O Interface; EXTERNAL Control
(RA to Digital Input #1 jumper removed)
The Powerfoil® X fan is also programmed to be controlled by an Energy Management System or Building Automation System. Starting,
stopping, and speed control duties are handled by the distributed I/O (2 N.O. contacts, 1 analog) provided by the installer. The wall
control unit remains active as a display so that fault messages can still be viewed and toggling between output frequency and fan RPM
displays can still be performed.
*For distributed I/O to be active, the EXT indicator light must be illuminated by pressing the PU button as shown above.
This mode of operation is commonly referred to as “External Control.”
About I/O Mode Selection:
Big Ass Fans factory defaults for analog and digital inputs are ACI (4-20 mA) and NPN (inputs pulled down
to DC Common). If required, the installer may switch these to AVI (0-10 VDC as shown above) and PNP (inputs pulled up to 24 VDC)
via the dip switches shown above. A diagram can be provided to reflect these alternate connection schemes (if required).
Содержание 8'-24' Powerfoil X
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