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ABB i-bus KNX
© 2010 ABB STOTZ-KONTAKT GmbH
Commissioning
Minimum dwell period in fan speed
in s [0...65,535]
Options:
0...30...65,535
This parameter defines the dwell time for a fan speed of the fan until
it switches to the next higher or lower fan speed.
The input is made in seconds.
A setting of 0 means non-delayed switching. The minimum switch times
of the relay can be found in the
The dwell time in a fan speed is only considered in automatic mode.
Enable limitations
Option:
no
yes
yes: Further parameters become visible.
At the same time, four communication objects for limitation of the fan speed
are enabled:
Limitation 1, e.g. for frost/heat protection
Limitation 2, e.g. for comfort operation
Limitation 3, e.g. for night shutdown
Limitation 4, e.g. for standby operation
Speed ranges (limitations) are defined for the fan with the speed limitation
function that may not be exceeded or undershot.
Four limitations are available. This can be used for example for the control of
various operating modes, e.g. frost/heat protection, comfort, night shut down
and standby. In normal cases the thermostat takes these operating modes
into account in its control variable for the actuator.
Important
The parameterised starting behaviour which is a technical characteristic
of the fan has a higher priority than a limitation or forced operation,
i.e. if a limitation is activated in fan speed 2 and a start-up behaviour is
parameterised via fan speed 3, the following behaviour will result: The fan
is in the OFF state and receives a control signal for fan speed 1. Initially
the fan operates at fan speed 3 (start-up speed) and then proceeds to fan
speed 2 which is defined by the limitation. The actual required fan speed 1
will not be achieved due to the limitation.
Technical
data, on page 9.
49
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