ABB ACS880 - Process PID Set

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
Parameter values for process PID control.Process PID set 140
The drive contains a single active PID controller for
process use, however two separate complete set-ups
can be programmed and stored.
The first set is made up of parameters 40.07…40.56*,
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 section Process PID control (page 109), and the
control chain diagrams on pages 758 and 759.
*The remaining parameters in this group are common
for both sets.
- / real32Displays the output of the process PID controller. See
the control chain diagram on page 759.
Process PID output
actual
40.1
This parameter is read-only. The unit is selected by
parameter 40.12 Set 1 unit selection.
1 = 1 / 10 = 1Process PID controller output.-32768.0 ... 32767.0
- / real32Displays the value of process feedback after source
selection, mathematical function (parameter 40.10 Set
Process PID
feedback actual
40.2
1 feedback function), and filtering. See the control chain
diagram on page 758.
This parameter is read-only. The unit is selected by
parameter 40.12 Set 1 unit selection.
1 = 1 / 100 = 1Process feedback.-32768.00 ...
32767.00
- / real32Displays the value of process PID setpoint after source
selection, mathematical function (40.18 Set 1 setpoint
Process PID setpoint
actual
40.3
function), limitation and ramping. See the control chain
diagram on page 759.
This parameter is read-only. The unit is selected by
parameter 40.12 Set 1 unit selection.
1 = 1 / 100 = 1Setpoint for process PID controller.-32768.00 ...
32767.00
- / real32Displays the process PID deviation. By default, this
value equals setpoint - feedback, but deviation can be
Process PID
deviation actual
40.4
inverted by parameter 40.31 Set 1 deviation inversion.
See the control chain diagram on page 759.
This parameter is read-only. The unit is selected by
parameter 40.12 Set 1 unit selection.
1 = 1 / 100 = 1PID deviation.-32768.00 ...
32767.00
- / real32Displays the trimmed reference output. See the control
chain diagram on page 759.
Process PID trim
output act
40.5
This parameter is read-only. The unit is selected by
parameter 40.12 Set 1 unit selection.
1 = 1 / 1 = 1Trimmed reference.-32768...32767
- / uint16Displays status information on process PID control.
This parameter is read-only.
Process PID status
word
40.6
1 = Process PID control active.PID activeb0
420 Parameters