ABB ACS150 - Page 16

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