ABB ACS560 Firmware Manual page 53

Sleep and boost function - Timing diagram
Setpoint
Sleep boost step (40.46)
Actual value
Non-inverted
(40.31 = Not inverted (Ref -
Wake-up level
(Setpoint - Wake-up deviation [40.47])
Actual value
Wake-up level
(Setpoint + Wake-up deviation [40.47])
Inverted (40.31
Motor speed
Sleep level
(40.43)
Tracking
In tracking mode, the PID block output is set directly to the value of parameter
(or 41.50) Set 1 tracking ref
so that no transient is allowed to pass on to the output, so when the tracking mode is
left, normal process control operation can be resumed without a significant bump.
Fbk))
= Inverted (Fbk - Ref))
t = Sleep delay (40.44)
sd
t < t t
sd sd
selection. The internal I term of the PID controller is set
Sleep boost time (40.45)
Wake-up delay
(40.48)
Sleep mode
STOP
Program features 53
Time
Time
Time
Time
START
40.50