Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual User Manual
Page 23
Analog Inputs
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
23
Configuration #2:
•
[Anlg In Config], bit 0 = “0” (Voltage)
•
[Speed Ref A Sel] = “Analog In 1”
•
[Speed Ref A Hi] = 30 Hz
•
[Speed Ref A Lo] = 0 Hz
•
[Analog In 1 Hi] = 10V
•
[Analog In 1 Lo] = 0V
This is an application that only requires 30 Hz as a maximum output frequency,
but is still configured for full 10 volt input. The result is that the resolution of the
input has been doubled, providing only 3 Hz change per input volt
(Configuration #1 is 6 Hz/Volt).
Analog Scaling
[Speed Reference A Sel] = “Analog In 1”
[Analog In 1 Hi]
10V
[Speed Ref A Hi]
60 Hz
[Analog In 1 Lo]
0V
[Speed Ref A Lo]
0 Hz
Analog Scaling
[Speed Reference A Sel] = “Analog In 1”
[Analog In 1 Hi]
10V
[Speed Ref A Hi]
30 Hz
[Analog In 1 Lo]
0V
[Speed Ref A Lo]
0 Hz
2
4
6
8
10
12
6
0
12
18
Output Hertz
Input Volts
24
30
36
42
48
54
60
2
4
6
8
10
12
6
0
12
18
Output Hertz
Input Volts
24
30
36
42
48
54
60