Hitachi SH1 Series Basic Manual page 72

Chapter 4
[bC110]～[bC125]
Electronic thermal protection
Code/Name
bC110
Electronic thermal level
setting, 1st-motor
bC111
Electronic thermal characteristic
selection, 1st-motor
bC112
Electronic thermal Subtraction
function enable, 1st-motor
bC113
Electronic thermal
Subtraction time, 1st-motor
bC-14
Electronic thermal counter memory
selection at Power-off
bC120
Free electronic thermal
frequency-3, 1st-motor
bC121
Free electronic thermal
current-1, 1st-motor
bC122
Free electronic thermal
frequency-2, 1st-motor
bC123
Free electronic thermal current-2,
1st-motor
bC124
Free electronic thermal frequency-3,
1st-motor
bC125
Free electronic thermal current-3,
1st-motor
・With [bC112], it is possible to subtract the thermal
integral value of the motor. Please make appropriate
settings according to the heat dissipation
characteristics of the motor. When the set value is
reduced from the initial value, the motor is easily
damaged.
・The thermal of Inverter is operated separately.
(Example) When [bC111]=00, Inverter rated current:64A, [bC110]=64(A),
Base frequency [Hb104]=60Hz, Output frequency=20Hz
Reduction
scale
X1.0
X0.8
X0.6
0 5 16
0 6 20
Trip time (s)
Base frequency
60
3.0
0
55.8
(87.2%) (120%)
・In case of output frequency = 16Hz (base=50Hz) or 20Hz
(base = 60hz), the reduction scale is ×0.8, then the
inverter will trip when the output current of
120%(150%×0.8) flows continuously within 60s
according to the curve.
Range (unit) Initial value
Motor rated
Motor rated
current × current
(0.00～3.00) ×1.00
00(Reduced
torque (VT))/ 00(JPN)/
01(Constant 01(EU)(USA)
torque (CT))/ (ASIA)(CHN)
02(Free setting)
00(Disable)/
01
01(Enable)
1～1000(s) 600
00(Disable)/
01
01(Enable)
0.00
0.00
～bC122(Hz)
Inverter rated
current × 0.00
(0.00～3.00)
bC120
0.00
～bC124(Hz)
Inverter rated
current ×
0.00
×(0.00～3.00)
bC122
0.00
～590.00(Hz)
Inverter rated
current × 0.00
×(0.00～3.00)
Inverter output
frequency (Hz)
50
60
Motor current (A)
(Ratio to the inverter
76.8 102.4
rated current)
(160%)
For parameter configuration
(Example) When [bC111]=01, Inverter rated current:64A， [bC110]=64(A),
Base frequency[Hb103]=60Hz, Output frequency=2.5Hz
Reduction
scale
X1.0
X0.9
X0.8
2.5
0 5
Trip time(s)
60
3.0
0
62.8
(98.1%)
・In case of output frequency = 2.5Hz, the reduction scale
is x0.9, then, the inverter will trip when the output
current of 135%(=150%×0.9) flows continuously within
60s according to the curve.
(Example) When [bC111]=02, and there is Output frequency [bC122]
Current
output (A)
[bC125]
[bC123]
[bC125]
0 [bC120]
Trip time (s)
60
3.0
0
(x)：[bC123]×109%
(y)：[bC123]×150%
(z)：[bC123]×200%
2nd motor When Intelligent Input terminal 024[SET] is enabled.
Code/Name
bC210 Electronic thermal level, 2nd-motor
bC211 Electronic thermal characteristic
selection, 2nd-motor
bC212 Electronic thermal subtraction function
selection, 2nd-motor
bC213 Electronic thermal subtraction time,
2nd-motor
bC220 Free setting, electronic thermal
frequency (1), 2nd-motor
bC221 Free setting, electronic thermal current
(1), 2nd-motor
bC222 Free setting, electronic thermal
frequency (2), 2nd-motor
bC223 Free setting, electronic thermal current
(2), 2nd-motor
bC224 Free setting, electronic thermal
frequency (3), 2nd-motor
bC225 Free setting, electronic thermal current
(3), 2nd-motor
4-29
[bC210]～[bC225]
Inverter output
60 frequency (Hz)
Motor current (A)
(Ratio to the inverter
86.4 115.2 rated current)
(135%) (180%)
[bC124]
Maximum frequency (Hz)
[bC122]
[Hb105][Hd105]
Output current (A)
(x) (y) (z)
Range
(unit)
Same as bC110
Same as bC111
Same as bC112
Same as bC113
Same as bC120
Same as bC121
Same as bC122
Same as bC123
Same as bC124
Same as bC125
Initial
value