6. Function blocks
6.1 Manufacturer function blocks
6.1.1.2 HY - Year time switch (Hora Year)
easyE4 devices feature a real-time clock with a date and time functionality.
When combined with the HW, HY or WT, YT function blocks, this real-time clock
makes it possible to implement the functionality of a weekly timer and year time
switch.
→ Section "Time and Date setting", page 644
The AC manufacturer function block, Astronomic clock, can be used to program
switching operations based on sunrise and sunset times. In order for this to work
properly, the settings for the device clock and the device location's time zone and
geographic coordinates must be correctly selected in this tab.
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 imple-
mented easily with the year time switch.
The channels are set via the PARAMETER menu or via easySoft 8.
The year time switch can:
l
Switch at recurring intervals by switching on and off for individual days, months,
or years.
l
Switch for continuous periods of time by remaining continuously switched on
from the start of any user-defined day until the end of any user-defined day,
month, or year.
The parameters for the switch-on and switch-off times for recurring inter-
vals are configured in one single channel for each.
The parameters for the switch-on and switch-off times for a continuous
period of time are configured in two neighbouring channels. If you enter
the ON information on channel A, the OFF information must be entered
on channel B; likewise, if the ON information is on channel B, the OFF
information must be on channel C.
General
easyE4 base devices provide 32 year time switches
HY01…HY32 (Hour Year). Accordingly, 128 switching times are
available.
Each time switch is provided with four channels A, B, C and D.
You can choose an on and off switching time for every channel.
These channels all act jointly on function block output Q1 of the
year time switch.
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easyE402/24 MN050009ENEaton.com
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