Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-03-17
Diagram 40
03-10
Reverse Setting When Analog Signal Input is Negative Frequency
Default: 0
Settings 0: Negative frequency input is not allowed.
The digital keypad or external terminal controls the forward and reverse
direction.
1: Negative frequency is allowed.
Positive frequency = run in a forward direction; Negative frequency = run
in a reverse direction.
The digital keypad or external terminal control cannot change the running
direction.
Use this parameter only for AVI or ACI analog input.
Requirements for negative frequency (reverse running)
1. Pr.03-10 = 1
2. Bias mode = Bias serves as the center
3. Corresponded analog input gain < 0 (negative); this makes the input frequency negative.
In using the additional analog input function (Pr.03-18 = 1), when the analog signal is negative
after the addition, you can set this parameter to allow or not allow the reverse running. The result
after adding depends on the “Requirements for negative frequency (reverse running)”.
03-11
AVI Analog Input Gain
03-12
ACI Analog Input Gain
03-13
AUI Analog Positive Input Gain
03-14
AUI Analog Negative Input Gain
Default: 100.0
Settings -500.0–500.0%
Pr.03-03–Pr.03-14 are used when the Frequency command source is the analog voltage or current
signal.
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