ABB ACS850 Firmware Manual page 49

Each time period can be assigned to multiple timers; likewise, a timer can be
controlled by multiple time periods.
The figure below presents how different time periods are active in daily and weekly
modes.
Time period 1: Start time 00:00:00; Stop time 00:00:00 or 24:00:00; Start on Tuesday; Stop
day Sunday
Time period 2: Start time 03:00:00; Stop time 23:00:00; Start day Wednesday; Stop day
Wednesday
Time period 3: Start time 21:00:00; Stop time 03:00:00; Start day Tuesday; Stop day Saturday
Time period 4: Start time 12:00:00; Stop time 00:00:00 or 24:00:00; Start day Thursday; Stop
day Tuesday
Time period 1
(weekly)
Time period 1
(daily)
Time period 2
(weekly)
Time period 2
(daily)
Time period 3
(weekly)
Time period 3
(daily)
Time period 4
(weekly)
Time period 4
(daily)
A "boost" function is also available for the activation of the timers: a signal source can
be selected to extend the activation time for a parameter-adjustable time period.
Timer active
Timer enable signal
Boost signal
Boost time
Program features 49