Chapter 4 Parameters|
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4-50 Revision 2016/03, 6ELE, V1.14
Example 8: Use negative slope
In this example, the use of negative slope is shown. Negative slopes are used in applications for control of
pressure, temperature or flow. The sensor that is connected to the input generates a large signal (10V) at high
pressure or flow. With negative slope settings, the AC motor drive will slow stop the motor. With these settings the
AC motor drive will always run in only one direction (reverse). This can only be changed by exchanging 2 wires to
the motor.
60Hz
0Hz
0V
10V
Pr.01.00=60Hz--Max. output Freq.
Potentiometer
Pr.04.00 =100%--Bias adjustment
Pr.04.01 =0--Positive bias
Pr.04.02 =100%--Input gain
Pr.04.03 =1--Negative bias: REV motion enabled
Gain:(10V/10V)*100%=100%
Bias adjustment:((60Hz/60Hz)/(Gain/100%))*100%=100%
negative slope
04.11
Minimum AVI Voltage Unit: 0.01
04.12
Minimum AVI Frequency (percentage of Pr.01.00) Unit: 0.01
04.13
Maximum AVI Voltage Unit: 0.01
04.14
Maximum AVI Frequency (percentage of Pr. 01.00) Unit: 0.1
04.15
Minimum ACI Current Unit: 0.1
04.16
Minimum ACI Frequency (percentage of Pr. 01.00) Unit: 0.1
04.17
Maximum ACI Current Unit: 0.1
04.18
Maximum ACI Frequency (percentage of Pr. 01.00) Unit: 0.1
Settings 0.0 to 100.0% Factory Setting: 100.0
The above parameters are used to set the analog input reference values. The min and max frequencies are
based on Pr.01.00 (during open-loop control) as shown in the following.
04.14
04.18
04.12
04.16
04.11
04.15
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