ABB DWA Series User Manual page 28

Programs types
• Program ON/OFF: is composed of a switching of the ON relay and of a subsequent switching of the OFF relay. It can have a daily period
(everyday with the same modes), weekly (every week with the same modes)*.
• PULSE ON Program: is an ON relay switching for a maximum duration of 59 seconds. It can have a daily period (everyday with the same
modes), weekly (every week with the same modes)*.
• PULSE OFF program: is a relay switching OFF for a maximum duration of 59 seconds. It can have daily period (everyday with the same
modes), weekly (every week with the same modes)*.
• HOLIDAY program: is a period of time defined by a start time and an end time within which all programmed switchings (of that channel)
are disabled. The relay is in OFF position (OFF holiday) or in ON position (ON holiday).
Channel types
• TIME channel: carries out programs of time type: ON / OFF, ON pulse, OFF pulse, holiday
• ASTRO channel: carries out programs of astronomical type, i.e. in the interval delimited by sunrise and sunset*: ON/OFF, ON pulse, OFF pulse,
holiday, night programs (see pages 34-35). ON switchings set before sunset are carried out at sunset, OFF switchings set after sunrise are
carried out at sunrise (except for some night programs that can have switching on or switching off during the day. See on page 34).
* times of sunrise and sunset are automatically calculated by DWA according to geographic coordinates set during installation. In place of
sunrise and sunset times it's possible to use the times of civil twilight (see page 18).
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User manual DWA