Motor Parameter Settings; Motor Capacity/Pole Number Selection; Electronic Thermal Function - Omron RX Series User Manual

5 Basic Settings
5-3

Motor Parameter Settings

5-3-1

Motor Capacity/Pole Number Selection

Set the following parameters according to your motor.
Parameter
No.
H003 1st Motor Capacity
H203 2nd Motor Capacity
H004 1st Motor Pole Number
H204 2nd Motor Pole Number
5-3-2

Electronic Thermal Function

The electronic thermal function prevents the motor from overloading and burning.
Set the rated current value of your motor in the Electronic Thermal Level parameters.
In the Electronic Thermal Characteristics Selection parameters, set the motor torque characteristics as
follows, according to the motor specifications.
Characteristics
Reduced torque
characteristics
Constant torque
characteristics
Precautions for Correct Use Precautions for Correct Use
• You cannot disable the electronic thermal function because it also provides overload protection
for the inverter.
• To connect several motors to a single inverter, set the Electronic Thermal Level to the rated
output current of the inverter and install a thermal relay etc. for each motor.
• Before setting the electronic thermal function, set the 1st/2nd Motor Capacity (H003/H203)
and the 1st/2nd Motor Pole Number (H004/H204) correctly according to your motor.
5 - 18
Function name
0.1/0.2/0.4/0.55/0.75/1.1/1.5/2.2/3.0/3.7/
4.0/5.5/7.5/11.0/15.0/18.5/22/30/37/45/55/
75/90/110/132
0.1/0.2/0.4/0.55/0.75/1.1/1.5/2.2/3.0/3.7/
4.0/5.5/7.5/11.0/15.0/18.5/22/30/37/45/55/
75/90/110/132
2/4/6/8/10
2/4/6/8/10
Use this setting for general-purpose motors.
In an air-cooled motor that uses the rear fan coupled directly to the motor shaft, the
cooling effect degrades as the motor rotation speed decreases. This characteristics
setting enables overload detection that takes into account such degradation of the
cooling effect at low speeds.
Use this setting for dedicated inverter motors.
Dedicated inverter motors are designed to prevent degradation of the cooling effect
that arises as the motor speed changes. This characteristics setting provides
overload detection independent of the motor rotation speed.
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Data Default data
Maximum
applicable
motor capacity
Maximum
applicable
motor capacity
4
4
Description
Unit
kW
kW
pole
pole