ABB ACS880 - Page 428

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
0.0 s / real32Defines the time constant of the 1-pole filter used to
smooth the derivative component of the process PID
controller.
Unfiltered signal
Filtered signal
Time
T
100
63
%
O = I × (1 - e
- t /T
)
I = filter input (step)
O = filter output
t = time
T = filter time constant
Set 1 derivation filter
time
40.35
10 = 1 s / 10 = 1 sFilter time constant.0.0 ... 10.0 s
0.0 / real32Defines the minimum limit for the process PID
controller output. Using the minimum and maximum
limits, it is possible to restrict the operation range.
Set 1 output min40.36
1 = 1 / 10 = 1Minimum limit for process PID controller output.-32768.0 ... 32767.0
1500.0; 1800.0 (95.20
b0) / real32
Defines the maximum limit for the process PID
controller output. See parameter 40.36 Set 1 output
min.
Set 1 output max40.37
1 = 1 / 10 = 1Maximum limit for process PID controller output.-32768.0 ... 32767.0
Not selected / uint32Freezes (or defines a source that can be used to freeze)
the output of the process PID controller, keeping the
output at the value it was before freeze was enabled.
This feature can be used when, for example, a sensor
providing process feedback must to be serviced
without stopping the process.
1 = Process PID controller output frozen
See also parameter 40.30 Set 1 setpoint freeze enable.
Set 1 output freeze
enable
40.38
0Process PID controller output not frozen.Not selected
1Process PID controller output frozen.Selected
2Digital input DI1 (10.2 DI delayed status, bit 0).DI1
3Digital input DI2 (10.2 DI delayed status, bit 1).DI2
4Digital input DI3 (10.2 DI delayed status, bit 2).DI3
5Digital input DI4 (10.2 DI delayed status, bit 3).DI4
6Digital input DI5 (10.2 DI delayed status, bit 4).DI5
7Digital input DI6 (10.2 DI delayed status, bit 5).DI6
428 Parameters