Combo Output Module
Product Manual
©2017 INTERRA
50
PM131126001A
Additionally, to reduce the bus traffic after any
failure, a delay for the status feedback transmission
at startup can be parameterized. When this option
is used, the status of the outputs after a bus voltage
failure is sent once the time delay configured has
elapsed.
The delay configured only affects the
sending of the feedback. The behaviour of
the outputs has no effect and they can
even be modified during the course of the
delay.
BUS VOLTAGE FAILURE
The behaviour of the output during and after bus
voltage failure can be parameterized. The combo
is equipped with bistable relays. That is why the
reaction of the output during bus voltage failure can
be configured too.
The
combo
actuator
allows
two
different
behaviours for bus voltage failure:
No Reaction: There is no reaction; the outputs
remain the last state.
Switch Off All Outputs: Both the fan and the valve
are switched off.
AIRING
The combo actuator permits activating the fan
when the fan coil is not working. This feature allows
the ventilation of room when there is no demand of
heat or cold. This option is always available and via
the object “Airing Level” it is possible to define a
new value for the fan speed. When a new value is
defined for airing, the fan will be switched on
whenever the fan coil is off (without demand).
When a value for airing is defined, this
value is saved and restored after bus
voltage failure. It is important to set the
airing object to 0 if the ventilation option
will not be used.