Operation In V/F Control; Setting The Rated Motor Current (N036); Setting The V/F Patterns (N011 To N017) - Omron SYSDRIVE 3G3MV User Manual

Basic Operation

5-3 Operation in V/f Control

This mode, which is used by conventional general-purpose inverters, is
convenient when replacing a conventional model with the 3G3MV Inverter
because the Inverter in this mode can be operated without considering the
constants of the motor. Furthermore, set the Inverter to this mode if the
Inverter is connected to than two or more motors or special motors, such as
high-speed motors.
To operate the Inverter in V/f control mode, be sure to set n036 for the rated
motor current and n011 through n017 for the V/f pattern.

5-3-1 Setting the Rated Motor Current (n036)

·Check the motor nameplate and set this parameter to the rated current.
·This set value is used for determining the electronic thermal characteristics to protect
the motor from overheating. The correct set value protects the motor from burning that
may result from overloading.
n036 Rated Motor Current
Setting 0.0% to 150% (A) of rated
range output current of the Inverter
Note 1. The default setting for this parameter is the standard rated current of the maxi-
mum applicable motor.
Note 2. Motor overload detection (OL1) is disabled by setting the parameter to 0.0.

5-3-2 Setting the V/f Patterns (n011 to n017)

·Set the V/f pattern so that the motor output torque is adjusted to the required load
torque.
·The 3G3MV incorporates an automatic torque boost function. Therefore, a maximum
of 150% torque can be output at 3 Hz without changing the default settings. Check the
system in trial operation and leave the default settings as they are if no torque charac-
teristic changes are required.
Maximum Frequency (FMAX)
n011
Setting 50.0 to 400.0 (Hz)
range
Register 0124 Changes during
Hex operation
Unit of 0.1 A Default setting
setting
Register 010B
Hex
Unit of 0.1
setting Hz
Chapter 5
No
See
note 1
Changes during
operation
Default setting
No
60.0
5-7