ABB DriveIT ACH550-01 User Manual page 129

ACH550 User's Manual
5. Go to parameters 3614 to 3617 and set the start time to 8
PM and stop time to 10 PM. Then set the start and stop
days to Saturday and Sunday. Now time period 4 is set.
6. Create the timer by going to parameter 3626 Timer 1 Src
and select all the created time periods (P1+P2+P3+P4).
7. Go to group 12, Constant Speed Sel and select Timer 1 in
parameter 1201 Constant Speed. Now timer 1 acts as the
source of constant speed selection.
8. Set the drive to AUTO mode for the timer to function.
Note! For more information about the Timed functions, see
group 36 Timed Functions in section "Parameter listing and
descriptions".
Boost
The boost function operates the drive for a certain
predetermined time. The time is defined with parameters and
activated with a selected digital input. The boost time starts
running after the digital input has been activated momentarily.
Boost must be connected to the timers and selected when a
timer is created. Boost is typically used for amplified air
ventilation.
input activated
DI active
Boost active
Real-time clock and timer functions
input deactivated
Boost time
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