Hitachi SJ300 Series User Manual

Using Intelligent Output Terminals
Operations
and Monitoring
4–56
The table below shows the settings and their meanings. Use the one that matches your load.
Reduced Torque Characteristic – The example below shows the effect of the reduced torque
characteristic curve (for example motor and current rating). At 20Hz, the output current is
reduced by a factor of 0.8 for given trip times.
Constant Torque Characteristic – Selecting the constant torque characteristic for the example
motor gives the curves below. At 2.5 Hz, the output current is reduced by a factor of 0.9 for
given trip times.
Free Thermal Characteristic - It is possible to set the electronic thermal characteristic using a
free-form curve defined by three data points, according to the table below.
Function Code Data Function/Description
B013 / B213 /B313
00 Reduced torque
01 Constant torque
02 Free-setting
Function
Code
Name Description Range
B015 /
B017 /
B019
Free-setting electronic
thermal frequency 1, 2, 3
Data point coordinates for Hz axis
(horizontal) in the free-form curve
0 to 400Hz
B016 /
B018 /
B020
Free setting electronic
thermal current 1, 2, 3
Data point coordinates for Ampere
axis (vertical) in the free-form curve
0.0 = (disable)
0.1 to 1000.
Tr ip
time (s)
Reduced trip current at 20 Hz
Trip current
reduction
factor
x 1.0
x 0.8
x 0.6
0
520 60
Hz A
60
0.5
0
73.642.7 55.2
92.8% 120% 160%
Tr ip
time (s)
Reduced trip current at 2.5 Hz
Trip current
reduction
factor
x 1.0
x 0.9
x 0.8
0
2.5 5 60
Hz A
60
0.5
0
82.847.8 62.1
104% 135% 180%

Hitachi SJ300 Series Specifications

General

Brand	Hitachi
Model	SJ300 Series
Category	Inverter
Language	English