6. Description of Parameters
- 147 -
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Output frequency
Output voltage
f1
f2
f3
F3-04: V1
F3-06: V2
Rated voltage
Rated frequency
F3-08: V3
F3-03 F3-05
F3-07
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You must set multi-point V/F curve based on motor’s load characteristic. The three
voltage points and frequency points must satisfy: V1 < V2 < V3, f1 < f2 < f3. When
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F3-03.
3. Variable-torque Square V/F curve
Figure 6-38 Variable-torque Square V/F curve
Output frequency
Output voltage
F1-02
(Rated voltage)
F1-04
(Rated frequency)
F3-01
(Torque boost)
Output voltage and output frequency change according to square curve when below
rated frequency. It is applicable to applications such as centrifugal fans where the load
is inversely proportional to the speed.
Summary of Contents for MD290 Series
Page 1: ......
Page 79: ...3 Electrical Installation 78 3 ...
Page 80: ...4 Operating Panel Keypad Display 4 1 Introduction 80 4 2 Inbuilt LED Operating Panel 80 ...
Page 92: ...5 Quick Setup 5 1 Get Familiar With Operating Panel 92 5 2 Setup Flowchart 93 ...
Page 227: ...7 Interfaces and Communication 226 7 ...
Page 285: ...10 Troubleshooting 284 11 ...
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