ABB ACS150 User Manual page 16

14
PID sleep functionality
The block diagram below illustrates the sleep function enable/disable logic. The
sleep function can be put into use only when the PID control is active.
output
frequency
4023
%refActive: The % reference (EXT REF2) is in use. See parameter 1102 EXT1/EXT2 SEL in ACS150 user's manual
(3AFE68576032 [EN]).
PIDCtrlActive: Parameter
modulating: Drive IGBT control is operating.
Example
The time scheme below visualizes the operation of the sleep function.
Sleep function for a PID controlled pressure boost pump (when parameter
SLEEP SELECTION is set to INTERVAL): The water consumption falls at night. As a
Update notice
Compare
1 NOT SEL
INTERNAL
1<2
DI1
.
.
2
.
Compare
0132
1
1>2
4025
2
9902 APPLIC MACRO = PID CONTROL. See ACS150 user's manual (3AFE68576032 [EN]).
Motor speed
t = Sleep delay (4024)
d
t<t
d
Sleep
level
(4023
)
Actual value
Wake-up deviation
(4025)
Select
And
4022
&
%refActive
PIDCtrlActive
modulating
Select
NOT SEL
INTERNAL
DI1
.
.
.
4022
t
d
Control panel
display:
PID
SLEEP
Stop Start
Wake-up delay
(4026)
Delay
t
4024
Delay
t
4026
1) 1 = Activate sleeping
0 = Deactivate sleeping
t
t
Set/Reset
S
1)
S/R
R
4022