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INTER 2V4SA
High-Low temperature output
Humidity compensation:
The stage 1 minimum speed can be adjusted
automatically as a function of relative hu-
midity. As humidity increases, the minimum
speed of stage 1 fans increases proportionally
to compensate for the change.
Full speed fan start-up:
In order to overcome the inertia of the ven-
tilation system components and de-ice the
fan blades in cold weather conditions, the
controller supplies maximum voltage to the
variable speed fans during the 2 seconds im-
mediately following each start-up.
De-icing cycle:
A de-icing cycle is provided for de-icing
stage 2 variable-speed fans in cold weather
conditions.
Four independent temperature probe in-
puts:
Up to four temperature probes can be con-
nected to the controller in order to obtain a
more accurate reading of the average room
temperature and a faster reaction time.
Overload and overvoltage protection:
Fuses are installed at the input and outputs
of the controller to protect its circuitry in the
case of an overload or overvoltage.
Computer control:
The controller can be connected to a com-
puter, thus making it possible to centralize
the management of information and diversify
control strategies.
Control of air inlet movement:
If the INTER 2V4SA is used in combination
with a PF-6 controller, the movement of the
air inlets can be coordinated with the opera-
tion of the fans using a potentiometer located
on the panel drive. This allows the air inlets to
be adjusted correctly, without the influence
of uncontrollable factors such as wind or air
from adjoining rooms.
Test mode:
A test mode allows you to simulate tem-
perature changes and verify controller per-
formance.
INTER 2V4SA, rev.02
5
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