IMPULSE•G+ Mini Advanced Instruction Manual – March 2014
5-40
Hunting Prevention
Occasionally, in an application, resonance between the internal control system and the mechanical
system causes current instability. This is called hunting, and may cause a crane to vibrate at a lower
speed (up to 30 Hz) and light load. The hunting prevention function monitors the motor flux and uses
a special control circuit to “smooth out” any peaks in the output current wave form.
Increase the set value of D11.02 when hunting is present while driving a light load. Decrease the set
value of D11.02 when the motor vibrates or stalls while driving a heavy load.
Parameter
Code
Name
Function
Range
Initial
Value
Control
Method
Access
Level
D11.01
Hunt Prevention Selection
Enable/Disable Hunt Prevention function
00 Disable
01 Enable
00, 01
01
V/f
Adv
D11.02
Hunt Prevention Gain
Hunting Prevention Gain
0.00–2.50
1.00
V/f
Adv
D11.03
Hunt Prevention Time
Constant
Hunting Prevention Time Constant
000–500ms
10
V/f
Adv
D11.05
Hunt Prevention Gain in
Reverse
Reverse Hunting Prevention Gain
0.00–2.50
0.00
V/f
Adv
Summary of Contents for 2001-G+M
Page 2: ......
Page 9: ...C h a p t e r 1 Introduction...
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Page 17: ...C h a p t e r 2 Installation...
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Page 25: ...C h a p t e r 3 Wiring...
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Page 39: ...C h a p t e r 4 Getting Started...
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Page 61: ...C h a p t e r 5 Programming Features...
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Page 153: ...Troubleshooting IMPULSE G Mini C h a p t e r 6...
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