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6 Basic Parameter Settings
High-function General-purpose Inverter RX2 Series User’s Manual
6-6 Thermal Protection of Motor (Electronic Thermal)
6
6-6-1 Electronic Thermal Setting
When you set Electronic thermal Subtraction function enable, 1st-motor [bC112] to 01 (Enabled) when
the current is below the electronic thermal level, the temperature integration data can be reduced
according to the heat emission from the motor.
Precautions for Correct Use
• The electronic thermal of the inverter works independently even when the electronic thermal
subtraction time is made shorter.
• Appropriate setting should be made for the motor that you use.
• In case of [bC112]=00, resetting cannot be made in 10 seconds after occurrence of an error.
• [bC112]=00 to be set to be equivalent to 3G3RX-V1 Series.
Ex.1) Subtraction mode ([bC112]=01, for [bC113]=600 s (10 min.))
Ex.2) Constant period mode ([bC112]=00)
In the constant period mode, a motor overload error [E005] and a trip occurs when either of the dupli-
cated counters reaches 100%. In the constant period mode, the thermal subtraction data are cleared
every 10 minutes (fixed).
Note In the constant period mode, a trip occurs when either of the duplicated counters reaches 100%. In the con-
stant period mode, data are cleared every 10 minutes.
Parameter
Change of Heat Emission Characteristics of Electronic Thermal
Item
Parameters
Data Description
Default
data
Electronic thermal
Subtraction function
enable, 1st-motor
[bC112]
00
Invalid: constant period mode
The temperature integration data are cleared
every 10 minutes.
01
01
Valid: Subtraction mode
The temperature integration data are subtracted
in accordance with the heat emission of the
motor.
Temperature
integration
data
Time
10 min.
Stopped
10 min. (fixed)
Temperature
integration
data
Time
10 min. (fixed)
Temperature integration
data 2 is cleared
Temperature integration
data 1 is cleared
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