KaCool D
02.02.2017
44
Installation and Connection
Control overview
EC fans, KaControl
Overview: PCB
The KaControl control variant offers the option of controlling
the cassette using an operating unit supplied separately or
an on-site building control system. A variety of settings and
con
fi
gurations are possible using DIP switches on the PCB as
well as parameters that can be set via the operating unit.
These instructions only provide a brief overview, please refer
to the separate KaControl operating instructions for further
setting options (I 492).
The KaControl system offers the option of group formation. An
expansion PCB (CAN bus) is available as an accessory for this,
where applicable.
Con
fi
guration
DIP
Function
Position
Description
1
---
OFF
By changing to ON, the cassette is no longer
controlled via the KaControl operating unit, but instead
via a 0-10 V signal on input AI2/GND and AI3/GND
(see separate KaControl instructions).
External
control 0-10V
ON
2
---
OFF
By changing to ON, the cassette is no longer
controlled via the KaControl operating unit, but instead
via an external potentiometer 0-100 kOhm signal on
input AI2/GND and AI3/GND (see separate KaControl
instructions).
Control via a
potentiometer
0-100 kOhm
ON
3
Clip-on sensor
fi
tted
ON
The clip-on sensor is available as an accessory and can be
used, for example, as a changeover sensor. If it is used,
the DIP switch must be set to ON.
No clip-on sensor
fi
tted
OFF
4
Changeover from
heating/
cooling/external
ON
If the function is enabled, the cassette can be changed
over in operating mode via an external potential-free
contact. The contact affects input DI2/GND.
---
OFF
5
4-pipe
ON
The cassette is con
fi
gured as a 2-pipe heating or cooling
system or a 4-pipe heating and cooling system depending
on the setting.
2-pipe
OFF
6
Temperature
detection on the
cassette
OFF
The cassettes have an air intake temperature sensor
for room temperature detection. Set the DIP switch to
ON if the temperature is to be detected on the operating
unit. If several cassettes are integrated in a group, set the
DIP switch to ON.
Temperature
detection on the
operating unit
ON
Potentiometer
The maximum fan speed can be predetermined via the potentiometer.
The maximum speed and therefore also the air volume and sound pressure level can be
reduced so that a maximum sound emission, for example, is not exceeded. The maximum
achievable cooling or heat output reduces accordingly.
