Group 13: Analogue Inputs - ABB ACS 140 Programming Manual

Group 13: Analogue Inputs

Code Description
1301 MINIMUM AI1
Relative minimum value of AI1 (%). Value corresponds to minimum reference
set by parameter 1104
See Figure 3 on page 34.
1302 MAXIMUM AI1
Maximum value of AI1 (%). Value corresponds to maximum reference set by
parameter 1105
See Figure 3 on page 34.
1303 FILTER AI1
Filter time constant for analogue input AI1. As the analogue input value
changes, 63 % of the change takes place within the time specified by this
parameter.
Note! Even if you select 0 s for the filter time constant, the signal is still filtered
with a time constant of 0.1 ms due to the signal interface hardware. This cannot
be changed by any parameters.
Figure 4
1304 MINIMUM AI2
Minimum value of AI2 (%). Value corresponds to minimum reference set by
parameter 1104
1305 MAXIMUM AI2
Maximum value of AI2 (%). Value corresponds to maximum reference set by
parameter 1105
1306 FILTER AI2
Filter time constant for AI2. Refer to parameter 1303
36
EXT REF
1
EXT REF MAX
[%]
100
63
Filter time constant for analogue input AI1.
1 or 1107
EXT REF MIN
1
EXT REF MAX
1 or 1107
MIN EXT REF
or 1108 2
EXT REF
Unfiltered Signal
Filtered Signal
Time constant
2
EXT REF MIN
or 1108 2
EXT REF
2 .
MIN
.
MAX
t
.
.
MAX
1.
FILTER AI