Start Frequency Setting (B082); Reduced Voltage Start Function (B036, B082) - Hitachi L700 SERIES Instruction Manual

4.2.33 Start frequency setting
The start frequency setting function allows you to specify the inverter
output frequency that the inverter initially outputs when an operation
command is input.
Use this function mainly to adjust the start torque.
If the start frequency (b082) is set too high, the inverter will start the motor with a full voltage, which will
increase the start current. Such status may trigger the overload restriction operation or make the inverter
prone to easily tripping because of the overcurrent protection.
Item
Start frequency
adjustment
Output frequency
Output voltage
4.2.34 Reduced voltage start function
The reduced voltage start function enables you to make the inverter
increase the output voltage gradually when starting the motor.
Set a small value for the reduced voltage start selection (b036) if you
intend to increase the start torque. On the other hand, setting a small
value will cause the inverter to perform full-voltage starting and to easily
trip because of overcurrent.
Item
Reduced voltage start
selection
Output frequency
Output voltage
Reduced Voltage Start
Function code Range of data
b082 0.10 to 9.99 (Hz)
FW
b082
Function code Range of data
b036
FW
Start frequency
b082
00
b036
Chapter 4 Explanation of Functions
Setting of the start frequency
00 Disabling the reduced voltage starting
01: Short (about 6 ms)
01 to 255
255: Long (about 1.53 s)
01 06
･･･
4 - 43
Related code
b082: Start frequency adjustment
Description
Related code
b036: Reduced voltage start selection
b082: Start frequency adjustment
Description