LS ELECTRIC LSLV-H100 Series, User Manual

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Learning Advanced Features
•
In AUTO mode,
- if the auto restart is configured, the inverter restarts after a trip condition is released
(command via digital input is used to restart the operation).
- if the auto restart is not configured and the trip condition is released using the OFF
key, or the switches at the terminal input, the inverter stays in the OFF state.
Because the command information is reset along with the trip condition, a new
command is required to operate the inverter.
5.29 Operational Noise Settings (Carrier Frequency
Settings)
Group Code Name LCD Display Parameter Setting
Setting
Range
Unit
CON
04
Carrier
Frequency
Carrier Freq
3.0 0.75~90kW 1.0
–15.0
kHz 2.0 110~355kW 1.0~5.0
1.5 400/500kW 1.0~4.0
05 Switching Mode PWM* Mode 0 Normal PWM 0
–1
-
* PWM: Pulse width modulation
Operational Noise Setting Details
Code Description
CON-04
Carrier Freq
Adjusts motor operational noise by changing carrier frequency settings.
Power transistors (IGBT) in the inverter generate and supply high
frequency switching voltage to the motor. The switching speed in this
process refers to the carrier frequency. If the carrier frequency is set high, it
reduces operational noise from the motor. If the carrier frequency is set
low, it increases operational noise from the motor.
CON-05 PWM
Mode
The heat loss and leakage current from the inverter can be reduced by
changing the load rate option at CON-
05 (PWM Mode). Selecting ‘1
(LowLeakage PWM)’ reduces heat loss and leakage current, compared to
when ‘0 (Normal PWM)’ is selected. However, it increases the motor noise.
Low leakage PWM uses a 2 phase PWM modulation mode, which helps
minimize degradation and reduces switching loss by approximately 30%.
Item Carrier Frequency
1.0 kHz 15 kHz