Net
User Manual 7.1 (2019-04) 9
Subject to change
Wildeboer-Net
Functions (2)
Fan enabling
The fan enabling function can be used to cause a fan to be shut off automatically. The enabling signal for a fan can be
deactivated via an output of the I/O module as soon as an OPEN limit switch on a group of fire dampers is no longer
active. This mechanism can optionally be overridden so that it is possible to close a selected fire damper even with
an activated fan. The fan enabling signal can also be deactivated as soon as a functional check is active. Ideally the
deactivation of the fan enabling signal causes a controlled shut-off of the fan. If this is not possible, and if there is a
risk of damage to the duct network due to the fan running down and the fire dampers closing, on-site measures must
be taken to prevent it. The fan-enabling signal is restricted to field level below a subnet controller. If it is necessary to
integrate fire dampers which are arranged in the field level of another subnet controller, this can be achieved using
further I/O modules.
Group 1
Subnet controller 1
Group 1
Subnet controller 2
Output
Output
Fan enabling
Fan enabling
Input
Input
&
Building control system
Fan enabling
All fire dampers
open?
Manual bypass of
the non-opened fire
dampers activated?
No functional
check active?
Manual operation
of the non-opened
fire dampers acti-
vated?
Fan enabling
ON
YES
YES
NO
NO
NO
YES
Fan enabling
OFF
YES
NO
