Eaton PROFIBUS-DP EZ204-DP User Manual Page 173

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Year time switch
For more information visit: www.EatonElectrical.comMN05013003E 169
Year time switch EZ500 and EZ700 devices with the type designation
EZ...-..-.C. are equipped with an integrated real-time clock
that you can use as a 7-day time switch and year time switch.
If you have to implement special on and off switching
functions on public holidays, vacations, company holidays,
school holidays and special events, these can be
implemented easily with the year time switch.
EZ offers eight year time switches Y1 to Y8 for up to 32 switch
times.
Each time switch has four channels which you can use to set
four different on and off times. The channels are set via the
parameter display.
The time and date are backed up in the event of a power
supply failure and continue to run. This means that it will
continue to run in the event of a power failure, although the
time switch relays will not switch. When EZ is in a de-
energized state, the timer contacts remain open. Refer to
section “Technical Data”, page 260 for information on the
buffer time.
Wiring of a year time switch
A year time switch can be integrated into your circuit in the
form of a contact.
The coils and contacts have the following meanings:
J
The procedure for setting the time is described under
section “Setting date, time and daylight saving time”,
page 209.
J
The clock module integrated in EZ works within the date
range 01.01.2000 to 31.12.2099.
Y1u------ÄQ1
Y2k
Ö1-Y3----ÄQ2
Contact Coil
Y1 to Y8 Contact of the year time
switch
EZ500_700.book Page 169 Tuesday, May 3, 2005 5:15 PM
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