6. Function blocks6.1 Manufacturer function blocks6.1.1.2 HY - Year time switch (Hora Year)easyE4 devices feature a real-time clock with a date and time functionality.When combined with the WT, YT or HW, HY function blocks, this real-time clock makesit possible to implement the functionality of a time switch.If you have to implement special on and off switching functions on public holidays, vaca-tions, company holidays, school holidays and special events, these can be implementedeasily with the year time switch.The channels are set via the PARAMETER menu or via easySoft 7.The year time switch can:l Switch at recurring intervals by switching on and off for individual days, months, oryears.l Switch for continuous periods of time by remaining continuously switched on fromthe start of any user-defined day until the end of any user-defined day, month, oryear.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 continuousperiod of time are configured in two neighbouring channels. If you enterthe ON information on channel A, the OFF information must be entered onchannel B; likewise, if the ON information is on channel B, the OFF inform-ation must be on channel C.GeneraleasyE4 base devices provide 32 year time switchesHY01…HY32 (Hour Year). Accordingly, 128 switching times areavailable.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 theyear time switch.178 easyE4 11/18 MN050009 EN www.eaton.com
