2-14 Analog Inputs
Configuration #3:
• [Anlg In Config], bit 0 = “1” (Current)
• [Speed Ref A Sel] = “Analog In 1”
• [Speed Ref A Hi] = 60 Hz
• [Speed Ref A Lo] = 0 Hz
• [Analog In 1 Hi] = 20 mA
• [Analog In 1 Lo] = 4 mA
This configuration is referred to as offset. In this case, a 4-20 mA input
signal provides 0-60 Hz output, providing a 4 mA offset in the speed
command.
Configuration #4:
• [Anlg In Config], bit 0 = “0” (Voltage)
• [Speed Ref A Sel] = “Analog In 1”
• [Speed Ref A Hi] = 0 Hz
• [Speed Ref A Lo] = 60 Hz
• [Analog In 1 Hi] = 10V
• [Analog In 1 Lo] = 0V
This configuration is used to invert the operation of the input signal. Here,
maximum input (10 Volts) represents 0 Hz and minimum input (0 Volts)
represents 60 Hz.
Analog Scaling
[Speed Reference A Sel] = “Analog In 1”
[Analog In 1 Hi]
20 mA
[Speed Ref A Hi]
60 Hz
[Analog In 1 Lo]
4 mA
[Speed Ref A Lo]
0 Hz
4
8
12
16
20
601218
Output Hertz
Input mA
24 30 36 42 48 54 60
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