Delta PG-40 Specifications download pdf (Page 60)

VFD-B Series

5-25

Example 6:

In this example, a negative bias is used to provide a noise margin. Also a potentiometer

frequency gain is used to allow the Maximum Output Frequency to be reached.

Max. Output Freq.

60Hz

Pr.01-00

0Hz

10V

Factory Settings

Pr.01-00=60Hz--Max. output Freq.

Pr.04-11=10%--bias adjustment

Pr.04-12=1 -- bias polarity

Pr.04-13=111% -- pot. freq. gain

Pr.04-14=0 -- REV. motion disable in negative bias

Negative

bias 6.6Hz

Bias

adjustment

Calculation of gain

Pr.04-13=(

10V

)X100%=111%

Example 7:

In this example, the potentiometer is programmed to run a motor in both forward and reverse

direction. A motor will be idle when the potentiometer position is at mid-point of its scale.

Using this example will disable the external FWD and REV controls.

Max. Output Freq.

Pr.01-00

Factory Settings

Pr.01-00=60Hz--Max. output Freq.

Pr.04-11=50%--bias adjustment

Pr.04-12=1 -- bias polarity

Pr.04-13=200% -- pot. freq. gain

Pr.04-14=1 -- REV motion enable in negative bias

60Hz

30Hz

0Hz

10V

30Hz

60Hz

REV

FWD

Example 8:

In this example, the option of anti-slope is shown. Anti-slope is used in an application where

control of pressure, temperature, or flow is needed. Under a high pressure or flow situation, a

sensor will generate a large signal such as 20 mA or 10V. With anti-slope enable, the large

signal will slow or stop the AC drive. The limit in this application is can’t change the direction

of run. For AC drive, it just can run in reverse direction.

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Delta PG-40 Specifications Page 60

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