ABB ACS880 Firmware Manual page 226

226 Parameters
No. Name / Range /
Selection
12.11 AI1 actual value
-22.000 ... 22.000 mA
or V
12.12 AI1 scaled value
-32768.000 ...
32767.000
12.15 AI1 unit selection
V
mA
12.16 AI1 filter time
0.000 ... 30.000 s
Description
Displays the value of analog input AI1 in mA or V
(depending on whether the input is set to current or
voltage by a hardware setting).
This parameter is read-only.
Value of analog input AI1.
Displays the value of analog input AI1 after scaling. See
parameters 12.19 AI1 scaled at AI1 min
scaled at AI1 max.
This parameter is read-only.
Scaled value of analog input AI1.
Selects the unit for readings and settings related to
analog input AI1.
Note: This setting must match the corresponding
hardware setting on the drive control unit (see the
hardware manual of the drive). Control board reboot
(either by cycling the power or through parameter
Control board boot) is required to validate any changes
in the hardware settings.
Volts.
Milliamperes.
Defines the filter time constant for analog input AI1.
%
100
63
T
- t /T
O = I × (1 - e )
I = filter input (step)
O = filter output
t = time
T = filter time constant
Note: The signal is also filtered due to the signal
interface hardware (approximately 0.25 ms time
constant). This cannot be changed by any parameter.
Filter time constant.
and 12.20 AI1
Unfiltered signal
Filtered signal
Def / Type
FbEq 16b / 32b
- / real32
1000 = 1 mA or V /
1000 = 1 mA or V
- / real32
1 = 1 / 1000 = 1
V / uint16
96.8
2
10
0.100 s / real32
t
1000 = 1 s / 1000 = 1
s