73
Stall Prevention Function
Chapter 6-3
6-3
Stall Prevention Function
A stall will occur if the motor cannot keep up with the rotating magnetic field
on the motor stator side when a large load is applied to the motor or a sudden
acceleration/deceleration is performed.
In the J7AZ, stall prevention functions can be set independently for
accelerating, running, and decelerating conditions.
Set Values
• If 1 is set, the motor will be decelerated according to the set deceleration
time. If the deceleration time is too short, the main circuit may result in
overvoltage.
• If 0 is set, the deceleration time will be automatically lengthened to
prevent overvoltage.
n55
Stall Prevention Level during Deceleration
Changes during
operation
No
Setting
range
0, 1
Unit of
setting
1
Default setting
0
Value Description
0
Stall prevention during deceleration
1
Stall prevention during deceleration
Stall Prevention during Deceleration with n55 Set to 0
Output
frequency
Deceleration time (Set value)
Deceleration time is controlled
to prevent overvoltage.
Time
Summary of Contents for J7 series
Page 12: ...XII...
Page 15: ...1 CHAPTER 1 Overview 1 1 Function 2 1 2 Nomenclature 3...
Page 54: ...40 Outline of Operation Chapter 3 2...
Page 102: ...88 Other Functions Chapter 6 7...
Page 158: ...144 Option Specifications Chapter 9 3...
Page 159: ...145 CHAPTER 10 List of Parameters List of Parameters 146...
Page 172: ...158 List of Parameters Chapter 10...
Page 173: ...159 CHAPTER 11 Using the Inverter for a Motor Using the Inverter for a Motor 160...