Overcurrent Suppression Function; Automatic Carrier Frequency Reduction Function; Rdy (Ready) Function - Omron 3G3JX User Manual

Overcurrent Suppression Function

•This function suppresses overcurrent caused by a steep current rise in rapid acceleration.
•Select to enable or disable the overcurrent suppression function in b140.
•This function does not operate during deceleration.
Parameter No. Function name
Overcurrent suppression
b140
(about 160% of the rating)

Automatic Carrier Frequency Reduction Function

This function automatically lowers the set carrier frequency when the temperature of the
semiconductor inside the Inverter becomes high.
Parameter No. Function name
Automatic carrier
b150
•While this function is activated, the noise from the motor may be heard differently because of
automatic change in career frequency.

RDY (Ready) Function

This function prepares for Inverter output to rotate the motor immediately after a RUN command is
input. When this function is enabled and the RDY signal is sent to the multi-function input terminal,
high voltage is applied to terminals U, V, and W on the main circuit terminal block. This happens
even if the motor is stopped with the RUN command turned off. Do not touch the main circuit
terminal block.
Parameter No. Function name
b151 Ready function selection
00: Disabled
function 01: Enabled
Desired
Output
frequency
Output
current
Suppression level
00: Disabled
reduction 01: Enabled
00: Disabled
01: Enabled
Data Default setting
Actual acceleration after
suppression operation
Time
Time
Data Default setting
Data Default setting
4-2 Function Mode
Unit
⎯
01
Unit
⎯
00
Unit
⎯
00
4-42
4