01/02 AWB8230-1415GB
Analog inputs,
terminals O, O2 and OI
63
Analog setpoint value matching
The external setpoint signal can be specifically matched with
parametersPNU A011 to A016 and A101 to A114, which are
described below. A configurable voltage or current setpoint range
can be assigned to a configurable frequency range.
Furthermore, analog setpoint signal filtering can be adjusted using
PNU A016.
Matching analog input O
Figure 50 shows how to match the analog signal (0 to +10 V).
With PNU A013 and A014, you specify the active voltage range. In
PNU A011, you can set the starting point, and in PNU A012 the
end point for the output frequency. If the line does not start at the
origin, (PNU A011 and A013 > 0), specify the starting frequency
with PNU A015. As long as the input signal is smaller than the
value set in PNU A013, either 0 Hz (for PNU A015 = 00) or
PNU A011 (for PNU A015 = 01) is output.
Figure 50: Setpoint matching, terminals O–L
PNU A011
0 V
PNU A013 PNU A014
10 V
0 % 100 %
PNU A012
PNU A004
PNU A015 = 00
PNU A015 = 01
f
[Hz]
U
O-L
PNU Name Adjustable in RUN mode Value Function WE
Normal Extended
A011 Starting
frequency,
input O
– j 0.00 to
400 Hz
Here, you define the starting frequency for the minimum
setpoint voltage (PNU A013).
0.00
A012 End frequency,
input O
– j 0.00 to
400 Hz
Here, you define the end frequency for the maximum
setpoint voltage (PNU A014).
0.00
A013 Minimum
setpoint
voltage, input O
– j 0 to 100 % Minimum setpoint voltage as a percentage of the greatest
possible voltage (+10 V).
0
A014 Maximum
setpoint
voltage, input O
– j 0 to 100 % Maximum setpoint voltage as a percentage of the greatest
possible voltage (+10 V).
100
A015 Condition for
starting
frequency for
analog input O
– j Determines the behaviour at setpoint values below the minimum setpoint
value.
01
00 The frequency defined under PNU A011 is applied to the
motor.
01 A frequency of 0 Hz is applied to the motor.
A016 Analog input
filter time
constant
– j Averaging for attenuating any superimposed interference frequencies at
analog inputs O, O2 or OI. The value between 1 and 30 specifies the number
of values to be averaged.
8
1 Low filtering effect, fast response to setpoint value changes
....
30 Strong filtering effect, delayed response to setpoint value
changes
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