1-102 ACH550-UH User’s Manual
Parameters
Group 13: ANALOG INPUTS
This group defines the limits and the filtering for analog inputs.
Group 13: Analog Inputs
Code Description Range Resolution Default S
1301 MINIMUM AI1 0.0…100.0% 0.1% 20.0%
Defines the minimum value of the analog input.
• Define value as a percent of the full analog signal range. See example below.
• The minimum analog input signal corresponds to 1104
REF1 MIN or 1107 REF2 MIN.
•
MINIMUM AI cannot be greater than MAXIMUM AI.
• These parameters (reference and analog min. and max. settings) provide scale and offset adjustment for the
reference.
• See the figure at parameter 1104.
Example: To set the minimum analog input value to 4 mA:
• Configure the analog input for 0…20 mA current signal.
• Calculate the minimum (4 mA) as a percent of full range (20 mA) = 4 mA / 20 mA · 100% = 20%
1302 MAXIMUM AI1 0.0…100.0% 0.1% 100.0%
Defines the maximum value of the analog input.
• Define value as a percent of the full analog signal range.
• The maximum analog input signal corresponds to 1105
REF1 MAX or 1108 REF2 MAX.
• See the figure at parameter 1104.
1303 FILTER AI1 0.0…10.0 s 0.1 s 0.1 s
Defines the filter time constant for analog input 1 (
AI1).
• The filtered signal reaches 63% of a step change within the time
specified.
1304 MINIMUM AI2 0.0…100.0% 0.1% 20.0%
Defines the minimum value of the analog input.
•See
MINIMUM AI1 above.
1305 MAXIMUM AI2 0.0…100.0% 0.1% 100.0%
Defines the maximum value of the analog input.
•See
MAXIMUM AI1 above.
1306 FILTER AI2 0.0…10.0 s 0.1 s 0.1 s
Defines the filter time constant for analog input 2 (
AI2).
•See
FILTER AI1 above.
100
63
%
Unfiltered signal
Filtered signal
Time constant
t
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