ABB ACS560, Firmware Manual

Page: 295 / 514

Parameters 295
37.42 ULC underload
timer Defines the time period for which time the monitored signal
must remain continuously below the underload curve. 20.0 s
0.0…10000.0 s Time. 1 = 1 s
40
40 Process PID set 1 Parameter values for process PID control.
The drive output can be controlled by the process PID. When
the process PID control is enabled, the drive controls the
process feedback to the reference value.
Two different parameter sets can be defined for the process
PID. One parameter set is in use at a time. The first set is
made up of parameters
40.07 … 40.50 , the second set is
defined by the parameters in group 41 Process PID set 2 .
The binary source that defines which set is used is selected
by parameter
40.57 PID set1/set2 selection .
See also the control chain diagrams on pages 495 and 498 .
40.01 Process PID output
actual Displays the output of the process PID controller. See the
control chain diagram on page
498 .
This parameter is read-only.
-
-200000.00...
200000.00
Process PID controller output. 1 = 1
40.02 Process PID
feedback actual Displays the value of process feedback after source
selection, mathematical function (parameter
40.10 Set 1
feedback function ), and filtering. See the control chain
diagram on page 495 .
This parameter is read-only.
-
-200000.00…
200000.00 Process feedback. 1 = 1
40.03 Process PID
setpoint actual Displays the value of process PID setpoint after source
selection, mathematical function (
40.18 Set 1 setpoint
function ), limitation and ramping. See the control chain
diagram on page 495 .
This parameter is read-only.
-
-200000.00…
200000.00 Setpoint for process PID controller. 1 = 1
40.04 Process PID
deviation actual Displays the process PID deviation. By default, this value
equals setpoint - feedback, but deviation can be inverted by
parameter
40.31 Set 1 deviation inversion . See the control
chain diagram on page 498 .
This parameter is read-only.
-
-200000.00…
200000.00 PID deviation. 1 = 1
40.05 Process PID trim
output act Displays the trimmed reference output.
This parameter is read-only. -
-32768...32767 Trimmed reference. 1 = 1 unit
No. Name/Value Description Def/FbEq16