Art. No. SC 1000 KNX
Random function
A switching time can be triggered offset in a set random period. The random function can be
activated separately for each switching time.
Each day at 00:00, the device calculates a time offset individually and randomly for each
switching time, by which a switching time is brought forward minute-by-minute (-) or is set back
(+). The maximum time offset between the set switching time and actual time of execution is
unalterably set to +/- 15 minutes. This allows time offsets of between 1 and 15 minutes. The
device randomly determines a time from the time window of the maximum time offset and adds
this time either to the set switching time or, alternatively, subtracts it from the switching time.
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It is not possible to transfer the switching times into the previous or next day using the time
offset, i.e. the random function does not extended beyond the ends of days. If a randomly
calculated time offset of a switching time go beyond the end of a day, then the random
function for the affected switching time is not executed.
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Several switching times can be allocated to a KNX channel. The device does not intercept
any switching times that overlap due to the random time offset. When using the random
function to specify the switching times that refer to the same KNX channel, care should be
taken to ensure that the individual switching times are apart by at least +/- the maximum
time offset.
Example: maximum time offset = +/- 15 minutes, one switching time set to 11:00, random
function active -> other switching times of the channel may be between 00:00 ... 10:45 and
11:15 ... 23:59. The same applies to additional switching times with a random function.
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If, in addition to the random function, an astro function is also activated, then the following
prioritisation applies to the calculation of the switching time:
1. Calculation of the astro time
2. The random time is added or subtracted to the astro time calculated.
Page 230 of 347
Software "Smart Control 501511"
Functional description
