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Grässlin

 (UK) Ltd

  

 
 
TOPICA 500 (STA500S) - Description & Programming instructions 

 
The timeswitch has a total of 20 storage spaces for switching operations. Each space can be programmed as either an 
ON or OFF instruction, and can be applied to any one day or four day combinations. Taking the maximum programme 
capacity, applying each space to an operation applicable on every day, the unit will carry out a total of 140 switching 
operations. Rated at 13 Amps AT 240 Volt ac resistive. 

 
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efore programming 

Press the reset button, using a pencil or similar instrument. This clears the memory of unwanted information in readiness 
for programming. The reset button should be used in the event of local interference causing the timeswitch to appear to 
malfunction. Local interference, dependent on location, may be present from time to time. 

 
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et current time and day

 

1.  Press and hold the ‘  ‘ clock symbol button during operations 2 to 5 below. 
2.  Press the ‘day’ button to select the current weekday (1 = Monday) 
3.  Press the ‘h’ button to select the correct hour. 
4.  If setting in Summertime, press the +/-1h button once. 
5.  Press the ‘m’ button to select the correct minute. 
6.  Now release the ‘ ’ button - the colon between hours and minutes will flash to indicate that the clock is running. 

 
Entering switching times 
 

1.  Press the ‘Prog.’ button to select the first free memory location. 
2.  Press the ‘day’ button to select the day or days required for the switching to occur. You have a choice of day groups: 

1 - 7 (Mon - Sun), 1 - 6 (Mon - Sat),    1 - 5 (Mon - Fri), 6 - 7 (Sat & Sun), or any individual day. Each programme 
space automatically starts with the day selection 1 - 7. You can change this with the day button. 

3.  Press the ‘h’ button to select the hour the switching is to occur. 
4.  Press the ‘m’ button to select the minute the switching is to occur. 
5.  Press the ‘

‘ button once to select an ON   instruction, or twice to select an OFF   instruction. 

6.  Press the ‘Prog.’ button to store your programmed information, and select the next free programme space. Or store 

your programme with the ‘ ’ button if you have finished programming. 

7.  Programme further switching instructions as above. 
8.  Pressing the ‘Prog.’ button one additional time after you have finished programming displays the remaining number of 

programme spaces e.g. ‘Fr 18’. If all programme spaces are full, ‘Fr 00’ will appear.   

 
Important Note: After programming is completed, and you return the timeswitch to the current time display with 
the ‘ ’ button, the timeswitch will not activate any switching instruction required for the current time.  You may 
need to manually select the desired switching state with the ‘

‘ button. Thereafter, as the unit encounters 

further switching instructions in the memory in real time, it will correctly activate all subsequent switching 
instructions.

 

 
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anual override 

With the ‘

‘ button you can manually operate the switch to switch ON or OFF outside the programmed times, or you can 

put the switch into a permanent ON or OFF condition.  
The first press of the ‘ 

 ‘ button advances the output to ON or OFF, without disrupting the programme sequence. The 

second press fixes the output in the continuously ON 

 condition. The third press fixes the output in the continuously 

OFF 

 condition. In either fixed condition, the timeswitch will only revert to the timed condition if you press the ‘ 

 ‘ 

button once more. 

 
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ead or change programmed information 

Press the ‘Prog.’ button repeatedly to view each of your programmed instructions in the order in which they were 
programmed. You can stop to alter any of the instructions using the buttons as described in  “Entering switching times’ 
above. 
 

 

Grasslin

 (UK) Ltd Tower House Vale Rise Tonbridge Kent  Tel 01732 359888   Fax 01732 354445

 

 

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