Pid Sleep Functionality - ABB ACS150 series User Manual

164

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
PIDCtrlActive: Parameter
modulating: Drive IGBT control is operating
Example
The time scheme below visualizes the operation of the sleep function.
Appendix: Process PID control
Compare
1
NOT SEL
INTERNAL
1<2
DI1
.
.
2
.
Compare
0132
1
1>2
4025
2
9902 APPLIC MACRO = 6 (PID CONTROL).
.
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
DI 1
.
.
.
4022
1102 EXT1/EXT2 SEL.
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