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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 51
1302 MAXIMUM AI1
Maximum value of AI1 (%). Value corresponds to maximum reference set by
parameter 1105
See Figure 3 on page 51.
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 25 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
Example: To set the minimum allowed analogue input value to 4 mA,
value for parameter 1301
as follows:
Value (%) = Desired minimum value / Full range of the analogue
input * 100%
= 4 mA / 20 mA * 100%
= 20%.
Note! In addition to this parameter setting, the analogue input must be
configured for 0-20 mA current signal. Refer to section L, Connection
Examples "Frequency Reference from a Current Source".
1
EXT REF
1
or 1108
EXT REF
MAX
[%]
100
63
Filter time constant for analogue input AI1.
1
or 1107
EXT REF
MIN
1
or 1108
EXT REF
MAX
MINIMUM AI
ac.maher.co.ir
or 1107
MIN
EXT REF
2
EXT REF
MAX
Unfiltered Signal
Filtered Signal
Time constant
2
.
EXT REF
MIN
2
EXT REF
MAX
1 (1304
MINIMUM AI
2
.
MIN
.
t
.
1.
FILTER AI
2) is calculated
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