Chapter 4: AC Drive Parameters
Page 4–121
DURApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
analog inPut ParaMeter exaMPle 9: zero volts out at low v
in
This example gives 0Hz output through the first 0V~2.5V of Analog Input. The rest of the 2.5V~10V
corresponds to 0~45 Hz
•
Minimum Frequency Reference = 0Hz
•
Maximum Frequency Reference = 45Hz
Results
0Hz
30Hz
60Hz
-15Hz
15Hz
45Hz
Output Frequency
The drive will not reverse direction unless the Frequency Command
is from an analog input, and reverse motion is enabled in P4.09.
0V 2.5V 5V 10V
-10V -5V0V 10V
0mA5mA 10mA 20mA
FORWARD
NOTE: Due to the way Bias, Gain, and Reverse works, the graph above cannot be achieved with the
Bias and Gain settings: If Reverse is enabled (P4.09), the motor will run reverse when the signal goes
below 2.5V. If reverse is disabled, the analog value will be evaluated as an absolute value (what would
have been negative motion will now result in positive motion).
Set P4.24 to uSe Low Point, Mid Point, and HigH Point SettingS for anaLog inPut conditioning (inStead of
BiaS and gain). uSe tHe foLLowing SettingS to create a deadBand froM 0~2.5V anaLog inPut:
•
Low Point = 0V input; 0Hz output; chart coordinates 0,0
•
Mid Point = 2�5V input; 0Hz output; chart coordinates 2�5,0
•
High Point = 10V input; 45Hz output; chart coordinates 10,45
NOTE: The Low/Mid/High Point method uses % output, instead of Hz. Therefore, the High Point value
in this example = 45Hz / 60Hz Max Output = 75%.
Parameter Settings
Analog Input AI1 or AI2 or AI3
Parameter Settings
Polarity
Positive (+) Positive (+) Positive (+) Negative (-)
AI V/Hz Calculated
Selection
P4�24 =
1, 3, 5, or 7
P4�24 =
2, 3, 6, or 7
P4�24 = 4, 5, 6, or 7
as shown to left, or
7: All Custom V/Hz
AIx Low V/A
P4�25 P4�31 P4�37 P4�43 0V
AIx Low Hz Percent
P4�26 P4�32 P4�38 P4�44 0%
AIx Mid V/A
P4�27 P4�33 P4�39 P4�45 2�5V
AIx Mid Hz Percent
P4�28 P4�34 P4�40 P4�46 0%
AIx High V/A
P4�29 P4�35 P4�41 P4�47 10V
AIx High Hz Percent
P4�30 P4�36 P4�42 P4�48 75%
Reverse Run Parameter
P4�09 0: Digital FWD/REV
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