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ABB i-bus KNX
© 2010 ABB STOTZ-KONTAKT GmbH
Commissioning
Hysteresis threshold
value in % +/- [0...20 %]
Options:
0...5...20
Here a hysteresis is set at which switchover to the next fan speed occurs.
The hysteresis applies for all three threshold values.
The setting 0 causes immediate switching without hysteresis.
The entered percentage value is directly added to or subtracted from the
percentage value of the Fan speed x threshold value. The result equals the
new upper or lower threshold.
Example, a three speed fan, hysteresis with fan control
Using hysteresis a continuous switching between the fan speeds around the
threshold value with deviating input signals can be avoided.
Enable limitations
Option:
no
yes
yes: Other parameters appear.
At the same time, 4 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.
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