Allen-Bradley PowerFlex 70 Enhanced Control, Справочное руководство, Страница: 11 / 170

Analog Inputs 7
Example 6
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[Anlg In Config], bit 0 = “0” (Voltage)
−
[Speed Ref A Sel] = “Analog In 1”
−
[Speed Ref A Hi] = 60 Hz
−
[Speed Ref A Lo] = 0 Hz
−
[Analog In 1 Hi] = 5V
−
[Analog In 1 Lo] = 0V
This configuration is used when the input signal is 0-5 volts. Here, minimum input (0 Volts) represents 0
Hz and maximum input (5 Volts) represents 60 Hz. This allows full scale operation from a 0-5 volt
source.
Example 7
−
[Anlg In Config], bit 0 = “0” (Voltage)
−
[Torque Ref A Sel] = “Analog In 1”
−
[Torque Ref A Hi] = 200%
−
[Torque Ref A Lo] = 0%
−
[Torque Ref A Div] = 1 (PowerFlex 700VC Only)
This configuration is used when the input signal is 0-10 volts. The minimum input of 0 volts represents
a torque reference of 0% and maximum input of 10 volts represents a torque reference of 200%.
1
2
3
4
5
6
6 0 12 18
Output Hertz
Input Volts
24 30 36 42 48 54 60
2
4
6
8
10
12
20 0 40 60
Torque Ref %
Input Volts
80 100 120 140 160 180 200