ABB ACQ580 - Process PID Set 1

Parameters 213
37.41 ULC overload timer Defines the time for which the monitored signal must
continuously stay above the overload curve before the drive
takes the action selected by 37.03 ULC overload actions.
20.0 s
0.0…10000.0 s Overload timer. 1 = 1 s
37.42 ULC underload
timer
Defines the time for which the monitored signal must
continuously stay below the underload curve before the drive
takes the action selected by 37.04 ULC underload actions.
20.0 s
0.0…10000.0 s Underload timer 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 413 and 414.
To set the PID customer unit, select Menu - Primary settings
- PID - Unit on the panel.
40.01 Process PID output
actual
Displays the output of the process PID controller. See the
control chain diagram on page 414.
This parameter is read-only.
-
-200000.00…
200000.00 PID
customer units
Process PID controller output. 1 = 1 PID
customer unit
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 413.
This parameter is read-only.
-
-200000.00…
200000.00 PID
customer units
Process feedback. 1 = 1 PID
customer unit
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 413.
This parameter is read-only.
-
-200000…200000
PID customer units
Setpoint for process PID controller. 1 = 1 PID
customer unit
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 414.
This parameter is read-only.
-
-200000.00…
200000.00 PID
customer units
PID deviation. 1 = 1 PID
customer unit
No. Name/Value Description Def/FbEq16