Program features 155
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.
1) 1 = Activate sleeping
0 = Deactivate sleeping
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.
Select
Compare
1<2
Or
<1
Delay
t
1
2
NOT SEL
DI1
And
&
%refActive
PIDCtrlActive
modulating
NOT SEL
INTERNAL
DI1
Delay
t
Or
<1
StartRq
INTERNAL
Select
.
.
.
.
.
.
Compare
1>2
1
2
Set/Reset
S
R
S/R
1)
(B1)
(B2)
Switch
Output
frequency
Motor
speed
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...