Sleep Function For The Process Pid (Pid1) Control - ABB ACS355 series User Manual

Sleep function for the process PID (PID1) control

The sleep function operates on a 2 ms time level.
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.
Switch
Output
frequency
Motor
speed
9904
MOTOR CTRL
MODE
Compare
0132
1
1>2
4025
2
Motor speed: Actual speed of the motor
%refActive: The % reference (EXT REF2) is in use. See parameter
PIDCtrlActive: Parameter
modulating: Drive IGBT control is operating.
Compare
NOT SEL
1
INTERNAL
1<2
4023
2
Select
NOT SEL
INTERNAL
DI1
.
.
.
4022
9902 APPLIC MACRO
Select
And
DI1
.
.
4022
.
&
%refActive
PIDCtrlActive
modulating
Or
5320 (B1)
<1
5320 (B2)
Delay
StartRq
t
4026
1) 1 = Activate sleeping
0 = Deactivate sleeping
= PID CONTROL.
Program features 155
Delay
t
Set/Reset
S
4024
S/R
R
Or
<1
1102 EXT1/EXT2 SEL.
1)