Omron SYSDRIVE 3G3EV SERIES, User Manual

Page: 51 / 88

4-20
n36
Operation after Recovery from Power Interruption
Setting range 0, 1, 2 Factory setting 0
This constant is used to select the processing to be performed after recovery from an
instantaneous power interruption.
Value Description
0 Discontinues operation.
1 Continues operation only if power interruption is within 0.5 second.
2 Continues operation unconditionally (with no error output).
Note If “1” or “2” is selected to continue operation, the Inverter automatically searches
the motor speed (even when the motor is in a free-running state) and continues
smooth operation. This function is called the speed search function.
Explanation of Speed Search Function
Motor speed
Free-running state
Inverter starts operating
Time
n37
Carrier Frequency
Setting range 1, 2, 3, 4
(see note 1) Factory setting 4 (10 kHz)
(see note 2)
This constant is used to set a pulse-width-modulated (PWM) carrier frequency.
Value Carrier frequency
1 2.5 (kHz)
2 5 (kHz)
3 7.5 (kHz)
4 10 (kHz)
5 12.5 (kHz)
Note As the cable between the Inverter and the motor becomes longer, a high-frequen-
cy leakage current from the cable increases, causing the Inverter output current
to increase as well. This may also affect peripheral devices. To prevent this, ad-
just the carrier frequency according to the following standards:
S
Cable length of 50 meters or less: 10 kHz or less
S
Cable length of 50 to 100 meters: 5 kHz or less
Note 1. The setting range for the 400-VAC class is “1 to 5.”
Preparing for Operation
Chapter 4