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4-38
4-2 Function Mode
4
Func
tions
Overvoltage LAD Stop Function
This function helps avoid an overvoltage trip due to regenerative energy from the motor during
deceleration. Note that the actual deceleration time may be longer than the set value. If DC voltage
exceeds the set level, the Inverter stops deceleration. The aim of this function is the same as the
overvoltage control function during deceleration, described in b055 and b056. However, these
functions have different deceleration characteristics and you can select either function according to
your system.
•Select to enable or disable the overvoltage LAD stop function in b130.
•Adjust the overvoltage LAD stop function level in b131.
•The main circuit DC voltage rises because of regenerative energy from the motor once
deceleration starts. With the overvoltage LAD stop function enabled (b130: 01), the Inverter stops
deceleration temporarily once the main circuit DC voltage has reached the overvoltage LAD stop
function level, which is lower than the overvoltage level. Deceleration then resumes if the voltage
level falls below the overvoltage LAD stop function level.
•With the overvoltage LAD stop function enabled (b130: 01), the actual deceleration time may
become longer than the set value (F003/F203).
•This function does not aim to keep the main circuit DC voltage level constant. Therefore, an
overvoltage trip may occur if the main circuit DC voltage rises rapidly because of rapid
deceleration.
•The fluctuation of the internal DC voltage of this function is larger compared to the overvoltage
control function during deceleration, described in b055, b056, b133, and b134. These functions
aim to avoid overvoltage during deceleration, and you can select either function according to your
system.
Parameter No.
Function name
Data
Default setting
Unit
b130
Overvoltage LAD stop
function
00: Disabled
01: Enabled
00
⎯
b131
Overvoltage LAD stop
function level setting
200-V class: 330. to 395.
400-V class: 660. to 790.
380/760
V
Internal DC voltage
Overvoltage level
Overvoltage protection
level during deceleration
Time
Output frequency
Deceleration started
Deceleration suspended
Deceleration suspended
Time
Deceleration restarted
Summary of Contents for JX-A4004
Page 2: ......
Page 16: ...14 About This Manual ...
Page 19: ...Chapter 1 Overview 1 1 Functions 1 2 1 2 Appearance and Names of Parts 1 4 ...
Page 24: ......
Page 25: ...Chapter 2 Design 2 1 Installation 2 2 2 2 Wiring 2 7 ...
Page 79: ...Chapter 4 Functions 4 1 Monitor Mode 4 2 4 2 Function Mode 4 6 ...
Page 174: ...5 8 5 2 Troubleshooting 5 Maintenance Operations ...
Page 175: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 2 6 2 Storage 6 8 ...
Page 199: ...Appendix Appendix 1Parameter ListApp 2 Appendix 2Product Life CurveApp 18 ...
Page 217: ...INDEX ...
Page 220: ......