Hitachi SJ7002 Series Instruction Manual page 116

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Example 3, setting for SJ700-3150LFE2 (185 to
400kW) - The rated motor current is 600A. The
setting range is (0.2 * 64) to rated current, or 120A
to 600A. For a setting of B012 = 600A (current at
100% rated current), the curve is shown to the
right.
The electronic thermal characteristic adjusts the
way the inverter calculates thermal heating, based
on the type of load connected to the motor, as set
by parameter B013.
CAUTION: When the motor runs at lower
speeds, the cooling effect of the motor's internal
fan decreases.
The table below shows the torque profile settings.
Use the one that matches your load.
Function Code
B013 / B213 / B313
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.
SJ700-150LFE2;
rated current is 64A
Trip
time (s)
60
0.5
0
55.8 76.8
87.2% 120%
Reduced trip current at 20 Hz
Trip
time (s)
60
5.0
0
Data Function/Description
00 Reduced torque
0 1 Constant torque
02 Free-setting
Trip current
reduction
factor
x 1.0
x 0.8
x 0.6
0
Trip
time (s)
60
0.5
0
A
102.4
160%
SJ700 Inverter
2
SJ700-3150LFE2
636 900 1140
106% 150% 190%
Trip current at 60 Hz
5 20 60
SJ700-3150LFE2;
rated current is 600A
508.8 720 912
84.8% 120% 152%
Reduced trip current at 20 Hz
3–33
A
Hz
A