Chapter 4: AC Drive Parameters
4–40
Analog Parameters
Source of Frequency Command Default Setting: 01
Settings:
01 Frequency determined by digital keypad up/down.
02* Frequency determined by 0 to +10V input
(including remote potentiometer) on AI1 terminal.
03 Frequency determined by 4 to 20 mA input on AI2 terminal.
04 Frequency determined by 0 to 20 mA input on AI2 terminal.
05 Frequency determined by RS-485 communication interface.
06 Frequency determined by -10V to +10V input on AI3 terminal.
This parameter sets the input source for the AC drive frequency command.
* In order to set P4.00 = 02, you must first change the value of P4.13 to some
value other than two (02) in order to avoid the “Error: Duplicate Function” error
message. (P4.13 default value is 02)
Analog Input Offset Polarity
Default Setting: 00
Settings:
00 Offset disabled
01 Positive Offset
02 Negative Offset
This parameter sets the analog input bias frequency to be positive or negative.
• The Analog Input Offset calculation will also define the Analog Input Offset
Polarity. Refer to the note following P4.02.
• P4.01 to P4.04 are used when the source of frequency command is an analog
input signal (0 to +10V, -10 to +10V, 0 to 20 mA, or 4 to 20 mA).
Analog Input Offset
Default Setting: 0.0
Range: 0.0 to 100%
This parameter provides a frequency offset for an analog input.
• Use the equation below to determine the Analog Input Offset. For this equation,
you will need to know the necessary Minimum Frequency References and
Maximum Output Frequency needed for your application.
• P4.01 to P4.04 are used when the source of frequency command is an analog
input signal (0 to +10V, -10 to +10V, 0 to 20 mA, or 4 to 20 mA).
The result of the Analog Input Offset calculation will also define the Analog Input Offset
Polarity (P4.01). A positive answer means you should have a positive offset. A
negative answer means you should have a negative offset.
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