ABB ACS355 - Page 269

Actual signals and parameters 269
4023 PID SLEEP
LEVEL
Defines the start limit for the sleep function. If the motor
speed is below a set level (4023) longer than the sleep
delay (4024), the drive shifts to the sleeping mode: The
motor is stopped and the control panel shows alarm
message PID SLEEP (2018).
Parameter 4022 SLEEP SELECTION must be set to
INTERNAL.
0.0 Hz /
0rpm
0.0…500.0 Hz /
0…30000 rpm
Sleep start level 1 = 0.1 Hz
1rpm
4024 PID SLEEP
DELAY
Defines the delay for the sleep start function. See parameter
4023 PID SLEEP LEVEL. When the motor speed falls below
the sleep level, the counter starts. When the motor speed
exceeds the sleep level, the counter is reset.
60.0 s
0.0…3600.0 s Sleep start delay 1 = 0.1 s
All parameters
No. Name/Value Description Def/FbEq
Wake-up level
deviation (4025)
t < t
sd
PID output level
PID process feedback
Stop
t
sd
= Sleep delay
(4024)
Sleep level
(4023)
Start
Wake-up delay
(4026)
t
sd
t
Control
panel:
PID SLEEP
t
t
PID ref