Omron MX2 Series User Manual page 384

7 Other Functions
• If 150% of overload capacity of your motor is large:
Set a small value for 1 minute relative to the time during which 150% of the overload capacity of
your motor is applied.
• If 150% of overload capacity of your motor is small:
Set a large value for 1 minute relative to the time during which 150% of the overload capacity of
your motor is applied.
• Setting the Motor Electronic Thermal Selection (b910) to 00 (Disabled) enables the electronic thermal
function to simultaneously detect the inverter and the motor.
This has the same characteristics as those of the conventional electronic thermal function, which the
electronic thermal detection characteristics for the inverter are the basic characteristics. Specifically,
the rated output current that serves as the reference value for overload detection changes to the set
b012/b212 value. The detection characteristics also change depending on whether the inverter is in
the heavy or light load mode.
For details on the electronic thermal detection function of the inverter, refer to 5-3-2 Electronic Ther-
mal Function on page 5-16. Note that the subtraction ratio is the same as when b911 is set to 01.
Parameter
No.
1st/2nd Electronic Thermal
b012/b212
Level
1st/2nd Electronic Thermal
b013/b213
Characteristics Selection
Motor Electronic Thermal
b910
Selection
Motor Electronic Thermal
b911
Subtraction Ratio
Motor Electronic Thermal
b912
Subtraction Time Constant
Motor Electronic Thermal
b913
Integration Gain
*1. When b910 is set to 01 to 03, the electronic thermal function is separated for the motor and for the inverter.
The electronic thermal function for the inverter works based on the constant torque characteristics with refer-
ence to the rated output current of the inverter, independent of the b012/b212 setting. For details on the elec-
tronic thermal detection function of the inverter, refer to 5-3-2 Electronic Thermal Function on page 5-16.
*2. When b910 is set to 01 to 03, the overload trip error is divided into the motor overload E05.
overload E38. .
b910=01: Enabled (Fixed subtraction rate)
The electronic thermal function is separated for the motor and for the inverter. For the motor, the
heat radiation is calculated with a fixed subtraction ratio.
This subtraction ratio is fixed and applied to electronic thermal values from 100% to 0% for 10 min-
utes.
Electronic thermal heat radiation total counter
100
[%]
7 - 74
Function name
0.20 × Rated current to 1.00 × Rated current
00: Reduced torque characteristics
01: Constant torque characteristics
02: Free setting
00: Disabled
01: Enabled (Fixed subtraction rate)
*1*2
02: Enabled (b911 subtraction rate)
03: Enabled (b912 time parameter subtraction)
0.10 to 100000.00
(Displays upper 4 digits)
0.10 to 100000.00
(Displays upper 4 digits)
1.0 to 200.0
Overload detection level
10 [min]
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Data
Time
Default
Unit
data
Rated
A
current
−
01
−
03
600.00 s
120.00 s
100.0 %
and the inverter