Example: Use Negative Slope; Minimum Avi Voltage; Minimum Avi Frequency (Percentage Of Pr.01.00); Minimum Aci Current - Delta Electronics AC Motor Drive VFD-E User Manual

Chapter 4 Parameters|
60Hz
FWD
30Hz
0Hz
0V
5V
30Hz
REV
60Hz
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
negative slope
0Hz
0V
04.11

Minimum AVI Voltage

Settings
04.12

Minimum AVI Frequency (percentage of Pr.01.00)

Settings
04.13 Maximum AVI Voltage
Settings
04.14 Maximum AVI Frequency (percentage of Pr. 01.00)
Settings
04.15

Minimum ACI Current

Settings
04.16 Minimum ACI Frequency (percentage of Pr. 01.00)
Settings
4-72
Pr.01.00=60Hz--Max. output Freq.
Potentiometer
Pr.04.00 =50.0%--Bias adjustment
Pr.04.01 =1--Negative bias
Pr.04.02 =200%--Input gain
10V
Pr.04.03 =1--Negative bias: REV motion enabled
Gain:(10V/5V)*100%=200%
Bias adjustment:((60Hz/60Hz)/(Gain/100%))*100%=200%
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%
10V
Bias adjustment:((60Hz/60Hz)/(Gain/100%))*100%=100%
0.0 to 10.0V
0.0 to 100.0%
0.0 to 10.0V
0.0 to 100.0%
0.0 to 20.0mA
0.0 to 100.0%
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Unit: 0.1
Factory Setting: 0.0
Unit: 0.1
Factory Setting: 0.0
Unit: 0.1
Factory Setting: 10.0
Unit: 0.1
Factory Setting: 100.0
Unit: 0.1
Factory Setting: 4.0
Unit: 0.1
Factory Setting: 0.0