Siemens 7LF4 542-0 Instrucciones De Operación página 37

Required inputs, depending on the program type and menu options.
Charac-
Program type Execution
teristics
INDI-VIDUAL
EXCEPTION ONCE
Select the option PROGRAM / WEEK for a program which is to be executed a on specific days of the week and is to be repeated weekly.
Select the option PROGRAM / YEAR for a program which is to be executed each year or only in a specific year. The execution period within the year can be defined by
entering start and end dates.
Select the option PROGRAM / EXCEPTION for a program which is to completely replace existing weekly or annual programs during a specified period.
Priorities of the various program types within the same channel:
WEEK program
YEAR program
EXCEPTION program
Operating principle: Type 1.B. S. T.
Montage: in distribution panel,
Rated impulse voltage: 4 kV
ON/OFF Weekday
times assignments
MON
TO P P
SUN
P P
PROG ON P P
PROG OFF P P
WEEK program
The various weekly programs
are ORed together
The various weekly and annual
programs are ORed together
The exception program is over-
riding within its defined period of
activity.
IEC/EN 60730-1, IEC/EN 60730-2-7
Degree of contamination: 2
Active Active
period
period
START date
END date
On each day during a specific period of a
specified year, an exception program is to
Day,
Day,
completely replace any existing weekly or annual
month,
month,
program.
year
year
Example: during the Christmas holidays of the
from
to
year 2012, the heating in an apartment is to be
0:00:00
24:00:00
switched each day from 7:00:00 to 23:00:00,
hours
hours
instead of in the normal cycle. This exception
period is to begin on 24 December 2012 and end
on 06 January 2013.
On certain weekdays during a specific period of a
specific year, an exception program is to
Day, Day,
completely replace any existing weekly or annual
month, month,
program.
year year
Example: in December 2012, the heating system
from to
of a department store is to be switched on from
0:00:00 24:00:00
8:00:00 to 18:00:00 each Sunday, because the
hours hours
store opens on Sundays in the period 4 December
2012 to 18 December 2012.
A channel is to be switched on continuously from
the ON time on the START date to the OFF time
Day, Day, on the END date of a specific year. This exception
month, month,
program is to completely replace any existing
year year
weekly or annual program for this channel.
from to
Example: the alarm system of an office building is
ON time OFF time
to be switched on continuously during the
vacation period 19:00:00 on 15 July 2012 to
06:00:00 on 7 August 2012.
A channel is to be switched off continuously from
the ON time on the START date to the OFF time
Day, Day,
on the END date of a specific year. This exception
month, month,
program is to completely replace any existing
year year
weekly or annual program for this channel.
from to
Example: in 2012, the normal recess gong in a
ON time OFF time
school is to be switched off during the summer
holidays 00:00:00 on 28 July 2012 to 24:00:00
on 10 September 2012.
YEAR program
The various weekly programs
are ORed together
The various annual programs
are ORed together
The exception program is over-
riding within its defined period of
activity.
Operation in a normal environment.
Switch output, potential-free
Application, objectives, examples
EXCEPTION program
The exception program is over-
riding within its defined period of
activity
The exception program is over-
riding within its defined period of
activity.
The various exception programs
are ORed together
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