ABB i-bus KNX FCA/S 1.1M Product Manual page 52

ABB i-bus KNX
© 2010 ABB STOTZ-KONTAKT GmbH
Commissioning
The sequence of the displayed parameters corresponds with their priorities,
i.e. the parameters with the highest priority has limitation 1 followed by
limitation 2, 3 and 4.
Note
The fault operation, e.g. as with a malfunction of the thermostat has a
lower priority than the fan limitation, i.e. by a limitation of the fan speed
during a thermostat malfunction only the upper or the lower limit of the fan
limitation can be set at best.
When automatic mode is exited, e.g. by a manual action, the limitations
become inactive.
The set limitations are reactivated after automatic operation is reactivated.
The following points apply for limitations:
The fan speed and valve position can be parameterised independently.
The limitation need not necessarily apply to one fan speed only.
It can also encompass another range of the fan speeds, i.e. only certain
fan speeds can be set if the limitation is active. In this way a limited
control is also possible.
The limitation is activated if a telegram with the value 1 is received on
the limitation object. The limitation is deactivated if a telegram with the
value 0 is received on the limitation object. A manual action ends
automatic mode.
If a limitation is activated, the Fan Coil Actuator switches to the
parameterised fan speed regardless of the control value. If during the
activation of the limitation another fan speed or a fan speed outside the
range of the "limitation range" is set, the required fan speed or the limit
fan speed of the range is set.
After switch off of the limitations, the fan speed and the communication
objects for valve control are recalculated and executed, This means that
during limitation the actuator operates normally in the background, the
outputs are not changed and implementation only occurs after the end of
limitation.
There are the same parameters for each of the individual four limitations
used to limit the fan speeds.
Important
The priority is according to the listed sequence. The highest priority
is assigned to limitation 1, e.g. Frost/Heat protection; the lowest priority
is assigned to limitation 4, e.g. standby operation.
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