Delta CFP2000 Series User Manual page 303

Ip55 fan and pump drive
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Chapter 12 Description of Parameter SettingsCFP2000
Positive / Negative Bias Mode (AVI1)
Positive / Negative Bias Mode (ACI)
Positive / Negative Bias Mode (AVI2)
Settings
 In a noisy environment, use negative bias to provide a noise margin. Do NOT use less than 1V to
set the operation frequency.
In the diagram below: Black line: Curve with no bias. Gray line: curve with bias
1.
2.
0: No bias
1: Lower than or equal to bias
2: Greater than or equal to bias
3: The absolute value of the bias voltage while serving as the center
4: Serve bias as the center
12.1-03-2
Default: 0

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