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LD Language Elements
SR2MAN01 11/2007 141
Change to Summer / Winter Time
Description The output of this function is in an OFF state over the entire duration of winter time,
and switches to ON for the entire duration of summer time.
By default, there is no change in winter / summer time. This function must be activated,
either from the programming software, or from the front panel of the smart relay.
To activate this function, from the programming software, proceed as follows:
z
display the
Program configuration
window:
:Edit
→
Program Configuration
menu,
z Select the Date format tab,
z Check the Activate Summer/Winter Time Change box,
z Define the time change dates:
z Either using one of the predefined geographic zones,
z Or by manually configuring the date (month/Sunday).
To activate this function from the front panel of the smart relay, proceed as
described in chapter CHANGE SUMMER/WINTER Menu, p. 99.
Access
This function is accessible from the LD function bar.
Use as a Contact When used as a contact, this element indicates the current season.
It may be used as many times as necessary in the program. It may be used
according to 2 modes: normally open or normally closed, described below.
Normally open mode:
Symbol of the normally open contact associated with a Change summer / winter time
function block:
The contact is active for the entire duration of summer time.
Normally closed mode:
Symbol of the normally closed contact associated with a Change summer/winter
time function block
The contact is active for the entire duration of winter time.
Note:
This function is only available for smart modules that contain a real-time clock.
W 1
w 1