6 - 49
6 Basic Parameter Settings
High-function General-purpose Inverter RX2 Series User’s Manual
6-6
Th
er
m
al Protectio
n o
f M
ot
or (
Ele
ctron
ic Th
ermal)
6
6-
6-1 Electr
onic
The
rmal Setting
Parameter
Optimal protection characteristics can be achieved with the deterioration of the cooling ability of the
motor at a low speed taken account of. ([bC111]=00)
Frequency-dependent characteristics can be set in the selection of the electronic thermal characteris-
tics. ([bC111]=02)
Precautions for Correct Use
• Autocooling motor needs to be used with reduced load (current) since the cooling function of
the autocooling fan becomes less effective when the motor rotation frequency decreases.
• The reduced torque characteristics are in accordance with the heat generation of the auto-
cooling motor.
Parameter
Item
Parameters
Data
Description
Default
data
First electronic thermal
level
[bC110]
In range of 20 to 300%
of the inverter rated
current (unit: A)
*1
*1. The inverter rated current is switched by the load type selection [Ub-03]. Even if [bC110] is set to be high,
[E001] excessive current error occurs when the current exceeds the excess current level.
Sets the protection current of motor.
1.00 ×
Inverter
rated
current
Electronic thermal
characteristic
selection, 1st-motor
[bC111]
00
Reduced torque characteristics:
Pattern for cooling function deteriora-
tion at a low speed
01
*2
*2. Default data when default data selection (UB-02) is set to 01.
01
Constant torque characteristics:
Pattern for constant output
02
Free setting:
Multiple patterns are available
according to the motor characteris-
tics.
Change of Electronic Thermal Characteristics
Item
Parameters
Data
Description
Default
data
Electronic thermal
characteristic
selection, 1st-motor
[bC111]
00
Reduced torque characteristics:
Pattern for cooling function deterioration at a
low speed
01
*1
*1. Default data when default data selection (UB-02) is set to 01.
01
Constant torque characteristics:
Pattern for constant output
02
Free setting:
Multiple patterns are available according to the
motor characteristics.
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
