ABB ACS880 Series, Firmware Manual

Page: 428 / 764

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
0.0 s / real32 Defines 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 s Filter time constant. 0.0 ... 10.0 s
0.0 / real32 Defines 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 min 40.36
1 = 1 / 10 = 1 Minimum 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 max 40.37
1 = 1 / 10 = 1 Maximum limit for process PID controller output. -32768.0 ... 32767.0
Not selected / uint32 Freezes (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
0 Process PID controller output not frozen. Not selected
1 Process PID controller output frozen. Selected
2 Digital input DI1 ( 10.2 DI delayed status , bit 0). DI1
3 Digital input DI2 ( 10.2 DI delayed status , bit 1). DI2
4 Digital input DI3 ( 10.2 DI delayed status , bit 2). DI3
5 Digital input DI4 ( 10.2 DI delayed status , bit 3). DI4
6 Digital input DI5 ( 10.2 DI delayed status , bit 4). DI5
7 Digital input DI6 ( 10.2 DI delayed status , bit 5). DI6
428 Parameters