Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-03-27
03-69
Negative AUI Voltage Highest Point
Default: 0.00
Settings -10.00–0.00 V
03-70
Negative AUI Voltage Proportional Highest Point
Default: 0.00
Settings -100.00–100.00%
03-71
Negative AUI Voltage Mid-Point
Default: -5.00
Settings -10.00–0.00 V
03-72
Negative AUI Voltage Proportional Mid-Point
Default: -50.00
Settings -100.00–100.00%
03-73
Negative AUI Voltage Lowest Point
Default: -10.00
Settings -10.00–0.00 V
03-74
Negative AUI Voltage Proportional Lowest Point
Default: -100.00
Settings -100.00–100.00%
When you set the negative voltage AUI to the Frequency command, -100% corresponds to Fmax
(Pr.01-00 Maximum Operation Frequency) and the motor runs in the reverse direction.
The requirement for these three parameters (Pr.03-69, Pr.03-71 and Pr.03-73) is Pr.03-69 <
Pr.03-71 < Pr.03-73. The values for three proportional points (Pr.03-70, Pr.03-72 and Pr.03-74)
have not limits. There is a linear calculation between two points.
The output percentage becomes 0% when the negative AUI input value is lower than the lowest
point setting.
For example:
If Pr.03-69 = -1 V; Pr.03-70 = 10%, then the output becomes 0% when the AUI input is ≥ -1V. If
the AUI input swings] between -1 V and -1.1 V, the drive’s output frequency oscillates between
0% and 10%.
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