Omron EasySpeed 3G3JE, Руководство пользователя

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Chapter 3
3-22
Operation
3-6-9 Selecting Reverse Rotation Prohibition
• This parameter is used to specify whether to enable or disable a reverse rotation command sent to
the Inverter.
• The parameter must be set to prohibit reverse operation when the Inverter is applied to applications
in which reverse rotation of the Inverter would cause problems.
3-6-10 Setting the Carrier Frequency
• With the 3G3JE, it is possible to switch between two carrier frequencies.
• Change the carrier frequency in the following cases.
Reduce the carrier frequency to 4 kHz if there are fluctuations in the speed or torque at low speeds
or if the wiring distance between the Inverter and motor is excessively long.
3-6-11 Initializing Parameters
• The parameters can be initialized to their default values.
• Parameters are initialize when P20 is set to “ini” and then the Enter Key is pressed.
• The frequency reference will also be initialized to the default value.
• The motor accumulated operating time will not be initialized.
P13 Reverse rotation prohibit selection Changes during
operation No
Selected item F.R/FWD Default setting FWD
Selected item Description
F.R (
f.r
) Allow reverse operation
FWD (
fwd
) Prohibit reverse operation (reverse operation disabled)
Wiring distance Carrier frequency (guideline)
50 m or less 4 kHz or 7 kHz
Longer than 50 m 4 kHz
P14 Carrier frequency selection Changes during
operation No
Setting range 4/7 (kHz) Default setting 4k
Set value Description
4 (
4k
) 4 kHz
7 (
7k
) 7 kHz
P20 Parameter initialization Changes during
operation No
Setting range ini/abt Default setting abt
Set value Description
ini (
ini
) Initialize
abt (
abt
) Abort