Siemens RMB795B Basic Documentation page 66

Annual holidays or
special days
Priority
Note on optimum
start control
Control input
"Holidays / special
days"
Configuration
Notes
Holiday input
Special day input
Priorities
Note
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Siemens
Building Technologies
Annually reoccurring holidays or special days can be entered by setting an asterisk
"*" for the annual setting. Otherwise, the entries will automatically be deleted after
the relevant days have been handled.
If 2 entries overlap, following applies:
Special days have priority over holidays. Example of a special day during the
holiday period: Stage play in the school building.
At the end of the holiday period or special day, the room operating mode resumes
as per the normal 7-day program.
During this transition period, it can occur that optimum start control (e.g. boost
heating for a plant) cannot be started in due time.
We thus recommend moving up the end of the holidays to give the plant sufficient
time to adapt to the respective setpoints.
The holidays and special days can also be activated via digital inputs. For that
purpose, they must be assigned.
Main menu > Commissioning > Extra configuration > Room group 1..10 > Room operating
mode
Operating line
Holiday input
Special day input
These inputs have an effect only if holidays / special day is set to "Autonomous" or
"Master".
Activation of a special day or holiday period via the digital inputs will not be entered
in the holiday / special day program, so that there will be no annual reoccurrence.
The digital input enables the plant to be constantly switched to "Holiday" mode
without necessitating interventions on the central control unit RMB795B.
If a permanent signal is applied to the configured input, the plant changes to
"Holiday" mode. This operating mode is maintained as long as the signal is
present. Only then does the normal 7-day program resume operation.
The digital input enables the plant to constantly use the special day program
contained in the 7-day program without necessitating interventions on the
RMB795B central control unit.
If a continuous signal is fed to the configured input, the special day program is
activated. This operating mode is maintained as long as the signal is present. Only
then does the normal 7-day program resume operation.
If a special day or holidays are activated simultaneously via control switches and
entry in the calendar, the following priority list applies:
Control switch "Special day".
Control switch "Holidays".
"Special day" entry in the calendar.
"Holidays" entry in the calendar.
If other devices are configured as slaves in the same holidays / special day zone,
the digital inputs also act on these devices.
Central control unit RMB795B
Function block: "Room group"
Adjustable values / remarks
---, N.X1, N.X2, ... (digital inputs only).
---, N.X1, N.X2, ... (digital inputs only).
CE1P3122en
18.01.2012