10 0-10V Inputs - Zehnder Option Box Manuel De L'installateur

10 0-10V inputs

The device is equipped with four optional
0-10V inputs to control the airflow of the
ventilation unit. Any sensor or switch
within the 0-10V range can be connected
to one of the inputs.
Installation
The complete ComfoNet system is limited to deliver a
maximum of 150mA. If all connected devices need more
the 150mA you need to install a powered ComfoSplitter.
1. Install the first desired sensor or switch to connector
9 (see the wiring diagram).
2. Install the second desired sensor or switch to
connector 11 (see the wiring diagram).
3. Install the third desired sensor or switch to connector
8 (see the wiring diagram).
4. Install the forth desired sensor or switch to connector
10 (see the wiring diagram).
5. If mentioned in the sensor/switch manual: Install the
separate power supply of the sensor/switch.
Example Wiring diagram CO
Commissioning
After installation, commission the connected sensor(s)
and/or switch(es) in the ventilation unit OPTION BOX
SETTINGS menu. Enable the connected input.
You can set the response to the input and the method
of interaction for each 0-10V input independently. This
way you can combine different types of sensors in one
system.
You can set the 0-10V function and the priority for all
0-10V inputs.
It should be considered, that the range of interaction is
always between the selected preset and the maximum
allowable volume. For optimal control, therefore preset
1 should always be selected. Basic ventilation is
guaranteed; request for more is delivered by the 0-10V
inputs.
sensor
2
The following menus must be set for each connected
0-10V input:
Menu item Function
INPUT AT 0% The required input signal to get 0% output
signal from the ventilation unit.
If the connected ancillaries need negative
control, set this value higher than the value
at INPUT at 100%.
INPUT AT 100% The required input signal to get 100%
output signal from the ventilation unit.
If the connected ancillaries need positive
control, set this value higher than the value
at INPUT at 0%.
METHOD ■ STEER: the input signal will result in a
rectilinear proportional output signal;
■ CONTROL: the ventilation unit will
control the output signal to a setpoint.
(When the input signal is different from
the setpoint the output signal will be
adjusted to try to reach the setpoint.)
CONTROL SETTINGS
■ SETPOINT: the setpoint, which the
ventilation unit must try to maintain;
(Only relevant if ■ PROPORTIONAL BAND: the
METHOD CONTROL is
proportional band value, which
selected)
the ventilation unit must use in its
calculations for the output signal;
■ INTEGRAL TIME: the integral time value,
which the ventilation unit must use in its
calculations for the output signal.
In chapter "Control method" you can find more
information on the difference between steer and control.
In chapter "Proportional Integral Differential (PID)
controller" you can find more information on the
proportional band and integral timer.
The following menus must be set for all connected
0-10V input:
■ 0-10V FUNCTION
Menu item Function
FLOW- the ventilation unit will translate the
PROPORTIONAL incoming signal from a 0-10V sensor into a
t corresponding airflow request between the
minimal and maximal set airflow.
FLOW_PRESET the ventilation unit will translate the
t incoming signal from a 0-10V sensor into
one of the airflow presets
0-10V PRIORITY
■
Menu item Function
ON The ventilation unit will respond to the
0-10V signal in AUTO and MANUAL mode.
AUTO ONLY The ventilation unit will only respond to the
0-10V signal in AUTO mode.
OFF The ventilation unit will ignore the 0-10V
signal.
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