Heating Timer - Gira 5142 00 Product Documentation

4.2.4.2.9 Heating timer

The heating timer integrated into the device allows requirements-oriented switch-over of the
controller operating mode depending on the time of day and the day of the week. For this
purpose, the device provides up to 28 separate switching times that can be preconfigured
individually in the ETS, and can be modified subsequently via the settings menu while the push
button sensor is in operation (see page 26).
The push-button sensor has an internal clock that has to be set at least once an hour via the
bus using a communication object, in order to keep the deviation as low as possible. The
internal clock controls the execution of the switching times of the heating timer.
The heating timer executes the switching times at the 00 second mark of each new minute. If a
switching time is edited and accepted in the menu or programmed into the device using the ETS
and its timestamp corresponds to the current time, then the push-button sensor only executes
the switching time on the next day if the following day of the week is taken into account in the
configuration.
Example 1:
Current time 8:30 a.m. -> A switching time is edited to 8:30 a.m. and accepted. -> The push-
button sensor executes the switching time only on the next day at the specified time so long as
the day of the week corresponds to the switching time specifications.
When a time telegram is received via the bus, the push-button sensor evaluates its switching
times again. If the new time deviates from the old one in hours or minutes, the heating timer
executes switching times as long as the time corresponds to the current, newly specified time.
Example 2:
Current time 7:59 a.m. -> New time telegram 8:00 a.m. -> A switching time is defined for 8:00
a.m. The push-button sensor executes the switching time immediately after the new time
specification.
Example 3:
Current time 8:01 a.m. -> New time telegram 8:00 a.m. -> A switching time is defined for 8:00
a.m. The push-button sensor executes the switching time immediately after the new time
specification.
If the new time in minutes and hours is the same as the old one, the push-button sensor does
not execute any switching times, because the switching time has already been executed before
the time specification and the time deviation is less than 60 seconds.
Example 4:
Current time 8:00 a.m. -> New time telegram 8:00 a.m. -> No response when switching times
are processed.
Before the push-button sensor is commissioned, switching times can be defined using the ETS.
In order to be able to use the heating timer in general, this function must first be enabled in the
parameter branch "Room temperature control -> Heating timer". After that it is possible to edit
the up to 28 switching times individually.
In the ETS, a switching time is divided into 5 parameters. In order to use a switching time, the
corresponding parameter "Use switching time X?" must be parameterised to "Yes" (default for
switching time 1). In this case it is possible to use further parameters directly to set the time
(in hours [0...23] and minutes [0...59]), the desired day of the week for execution and the
required controller operating mode. Under day of the week you have the option of selecting
individual days ("Monday", "Tuesday", ..., "Saturday", "Sunday"), selecting only workdays
(Monday - Friday), selecting the weekend (Saturday - Sunday), or selecting the entire week
(Monday - Sunday). Under controller operating mode you can set the modes "Comfort mode",
"Standby mode", "Night mode" or "Frost/heat protection mode".
i It has to be pointed out that an operating mode set via the heating timer is on equal terms
with a local control on the push-button sensor or via the switchover objects (4 x 1-bit,
1-byte KNX switchover object) and can be changed at any time. Functions that control the
operating mode of the controller with a higher priority (e.g. window status, presence
detector) are not affected by the heating timer.
Order No. 5142 00
Order No. 5145 00
Software "Push button sensor 3 plus"
Functional description
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