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Siemens Building Technologies

CA2N5241E / 11.1998

Landis & Staefa Division

3/4

After start-up (or after a reset), it is also possible to set a daily switch programme with
12 switching operations (6 On and 6 Off) by setting the actual times only, without
pressing d for the day of the week.
The daily programme is indicated by the arrow above  1 –> 7 .
Since during programming no days need to be entered, programme entry starts with the
switching times.

To display the programmed ON and OFF settings, press  Prog.
Press 

  after a review of these settings.

Recall the command by pressing  Prog.  and change it by pressing  h ,  m  and, if
necessary,  d .
Alternatively, clear the displayed command by pressing  h + m  simultaneously.
Press  

  after completing the changes.

A holiday programme can be used to suspend the automatic programme for a period of
1 ... 45 days. Hold down the  h  key throughout the entry procedure. Press  
repeatedly, counting the number of holiday days individually.
After 45 (days) the display will revert to 0. The holiday programme will start at 00:00 on
the following day, and is indicated by  

OFF

.

Christmas holiday:

24 December to 2 January inclusive

Total days:

10 (Enter on 23 December)

Press  h  to display the stored or remaining number of holiday days. Simultaneously
press  h  and  

  to extend the holiday programme, or to reset it to 0 to continue with

the automatic programme sequence.
These options can be carried out before or during the holiday period.

Press  

  to toggle between ON and OFF.

This manual operation will be overridden by the next programmed switching sequence.
This facility is not available during a holiday period.

Press  

  and  m  simultaneously to set automatic operation to "Permanent ON" or

"Permanent OFF". This continuous control function is indicated by a bullet symbol above
the ON or OFF indicator in the display and may be initiated during a holiday period 1).

Note that in this case, whichever permanent state has been invoked will
remain in operation after expiry of the holiday period.

To change or exit from a permanent state hold down the m key and press  
repeatedly to toggle between the states "Permanent ON", "Permanent OFF" and "Auto"
(bullet disappears).

+ 1 hour:

press  d + h  simultaneously

– 1 hour:

press  d + m  simultaneously

+   =   Press 

simultaneously

/    =   Press 

consecutively

d + m +  

  +  

= Reset / clear

 + d / h / m

= Set clock (day and time)

 + h / m

= Set clock (time only)
= Clock operation

d + h

= + 1h (summer time)

d + m

= - 1h (winter time)

Prog / d / 

 / h / m = Programme / Correction

Prog / h + m

= Delete programme

h + 

= Holiday (max. 45 days)

m + 

= Mode selection: On / Off / Auto

Daily programme

Recall

Changing or clearing
a command

Holiday programme

Example 2

Recalling / changing /
clearing
a holiday programme

Override

Permanent control

Daylight savings
change-over

Summary

Summary of Contents for BUD 5241

Page 1: ... the programme retained for 72 hours However the relay will go to or remain in the normal position 71 72 made When placing an order please specify the quantity product description and type code Example 2 Digital time switches BUD Sheet steel housing printed circuit board with LCD display and programming buttons Mounting instructions Ref 35654 are enclosed with the digital time switch Although micr...

Page 2: ...Monday If the switch command is to be carried out on Monday enter Monday by pressing the key Other or additional weekdays can be selected by pressing d and entered by pressing If for example the command is to be carried out daily at the same time from Monday to Friday each of the numbers 1 5 should be indicated by an arrow For a switch command applying to a full week all days 1 7 should be marked ...

Page 3: ...neously press h and to extend the holiday programme or to reset it to 0 to continue with the automatic programme sequence These options can be carried out before or during the holiday period Press to toggle between ON and OFF This manual operation will be overridden by the next programmed switching sequence This facility is not available during a holiday period Press and m simultaneously to set au...

Page 4: ... W x H x D 54 x 123 x 55 mm see also drawing Dimensions Usage Built in unit for control panel mounting Ambient temperature Operation 0 50 C Storage 25 70 C Ambient humidity 10 90 rh without condensation Snap mounted on DIN rail EN50022 35 x 7 5 or screwed to a flat surface Product safety EN60730 Overvoltage category I I Contamination level 2 Electrical safety SELV E PELV to IEC364 4 1 Function Typ...

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