E6582233
C-18
3
Note 1: At extremely low speeds of lower than 1 Hz or over 150%, an overload trip (
) occurs in a short
period of time to protect the inverter.
Note 2: If an inverter overload occurs with the factor default settings, the inverter is set to lower the carrier
frequency automatically and overload tripping is (
) controlled. Although noise from the motor
increases when the carrier frequency is reduced, there is no effect on performance. When reducing the
carrier frequency is undesirable, set parameter
=
.
4) Electronic thermal memory
f632
When the power is OFF, it is possible to reset or maintain the overload totaling level.
This parameter's settings are applied both to the motor's electronic thermal memory and the electronic
thermal memory for inverter protection.
[Parameters settings]
Title
Function
Adjustment range
Default setting
Electronic
thermal
memory
0: Disabled
1: Enabled
=
is a function for complying with the U.S. NEC standards.
