Omron RX Series - Free-Electronic Thermal Function

7 Detailed Functions
7 - 70
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
 Examples of Actual Electronic Thermal Characteristics
Electronic thermal characteristics are as shown in the graphs below under the following four
conditions.
• The inverter (Model: G3RX-A2150-V1) is used. (Rated output current: 64 A in the heavy load
mode, 73 A in the light load mode) 1st Electronic Thermal Level (b012) is set to 64 A in the heavy
load mode, and 73 A in the light load mode.
• 1st Electronic Thermal Characteristics Selection (b013) is set to 00 (Reduced torque
characteristics).
• 1st Base Frequency (A003) is set to 60 Hz.
• While the output frequency is output at 20 Hz. (Reduction factor: x 0.8)
• The free-electronic thermal function enables you to change the electronic thermal characteristics
according to the motor or load in use.
• Set the desired electronic thermal characteristics in the Free-electronic Thermal Frequency 1 to 3
(b015/b017/b019) and the Free-electronic Thermal Current 1 to 3 (b016/b018/b020).
• Set the 1st/2nd/3rd Electronic Thermal Characteristics Selection (b013/b213/b313) to 02 (Free
setting).
Basic Characteristics in Heavy Load Mode Basic Characteristics in Light Load Mode
Free-electronic Thermal Function
Parameter
No.
Function name Data Default data Unit
b015
Free-electronic Thermal
Frequency 1
0. : Disabled
1. to Free-electronic Thermal Frequency 2
*1
*1. Setting the Free-electronic Thermal Frequency to 0 causes a warning (120).
0. Hz
b017
Free-electronic Thermal
Frequency 2
0. : Disabled
Free-electronic Thermal Frequency 1 to
Free-electronic Thermal Frequency 3
*1
b019
Free-electronic Thermal
Frequency 3
0. : Disabled
Free-electronic Thermal Frequency 2 to
400
*1
b016
Free-electronic Thermal
Current 1
0.00 to Rated current
(Set to match the rated current of your
motor.)
0.00 Ab018
Free-electronic Thermal
Current 2
b020
Free-electronic Thermal
Current 3
Overload detection time [s]
60
3.0
0.0 A
55.8 A
(87.2%)
76.8 A
(120%)
102.4 A
(160%)
Motor current
(percentage for rated
output current of
inverter heavy load)
Overload detection time [s]
60
3.0
0.0A
63.7 A
(87.2%)
70.1 A
(96%)
87.6 A
(120%)
Motor current
(percentage for rated
output current of
inverter light load)