Hitachi WJ200-001S Instruction Manual page 134

Electronic thermal characteristic curve: The characteristic curve depends on dual rate
setting in  as follows.
=
(HD)
Trip time (s)
60
3.0
0
110% 150%
Electronic thermal characteristic: The characteristic curve is unique, but reduction
rate depending on frequency is selected in .
 Reduced Torque (=)
Reduction rate
x1.0
x0.8
x0.6
0 5 16 50
0 6 60
20
Output frequency [Hz]
 Constant Torque (=)
Reduction rate
x1.0
x0.8
0
3 60
Output frequency [Hz]
Percentage of
200%
b012/b212
Example: WJ200-015L**, Base FQ=60Hz, ND setting (Rated current 9.6A= b012)
60Hz (Reduction rate: x1.0)
Trip time
[s]
60
3.0
0
10.56
Base FQ
(110%)
Motor current [A]
Example: WJ200-015L**, Base FQ=60Hz, HD setting (Rated current 8.0A= b012)
60Hz (Reduction rate: x1.0)
Trip time
[s]
60
0.5
0
8.8
(110%)
Motor current [A]
=
(ND)
Trip time (s)
60
0.5
0
110% 120% 150%
20Hz (Reduction rate: x0.8)
Trip time
[s]
60
3.0
11.5 14.4[A]
(120%) (150%)
0Hz (Reduction rate: x0.8)
Trip time
[s]
60
0.5
12.0 16.0[A]
(150%) (200%)
349
Percentage of
b012/b212
0
8.45 9.2 11.5[A]
(88%) (96%) (120%)
Motor current [A]
0
7.04 9.6 12.8[A]
(88%) (120%) (160%)
Motor current [A]