ABB ACS860, Firmware Manual

Page: 126 / 438

126 Parameters
12.15 AI1 unit selection 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
96.08 Control board boot ) is required to
validate any changes in the hardware settings.
V
V Volts. 2
mA Milliamperes. 10
12.16 AI1 filter time Defines the filter time constant for analog input AI1.
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.
0.100 s
0.000 … 30.000 s Filter time constant. 1000 = 1 s
12.17 AI1 min Defines the minimum site value for analog input AI1.
Set the value actually sent to the drive when the analog signal
from plant is wound to its minimum setting.
See also parameter
12.01 AI tune .
0.000 mA or
V
-22.000 … 22.000
mA or V Minimum value of AI1. 1000 = 1 mA
or V
12.18 AI1 max Defines the maximum site value for analog input AI1.
Set the value actually sent to the drive when the analog signal
from plant is wound to its maximum setting.
See also parameter
12.01 AI tune .
20.000 mA or
10.000 V
-22.000 … 22.000
mA or V Maximum value of AI1. 1000 = 1 mA
or V
No. Name/Value Description Def / FbEq16
63
%
100
T
t
O = I × (1 - e
-t /T
)
I = filter input (step)
O = filter output
t = time
T = filter time constant
Unfiltered signal
Filtered signal