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5 Basic Settings
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
5-3 Motor Parameter Settings
5
5-
3-2 Elect
ronic T
hermal F
unction
z
Constant torque characteristics
Use the torque characteristics setting for dedicated inverter motors.
Dedicated inverter motors are designed to prevent degradation of the cooling effect that arises as
the motor speed increases, except at 5 Hz or less.
For constant torque characteristics, the reduction factor is not defined for frequencies of 5 Hz or
more.
Specifically, the following reduction factor is applied to the current value set in the 1st/2nd Electronic
Thermal Level (b012/b212) to calculate a reduced current value, which is equivalent to 100% of the
basic characteristics.
Reduction Factor Characteristics
z
Examples of actual electronic thermal characteristics
Under the following four conditions, electronic thermal characteristics are shown in the graph below,
where the reduction factor at 20 Hz is
×
0.8 according to the reduction factor in the reduced torque
characteristics, which is reflected on the basic electronic thermal characteristics.
• 1st Electronic Thermal Level (b012) is set to 60 A.
• 1st Electronic Thermal Characteristics Selection (b013) is set to 00 (Reduced torque characteris-
tics).
• 1st Base Frequency (A003) is set to 60 Hz.
• 20-Hz output frequency is output (Reduction factor:
×
0.8)
x1.0
x0.8
x0.6
0
2.5
5
60
Reduction
factor
Inverter
Output frequency [Hz]
Base Frequency (A003/A203)
60
3.0
0.0 A 52.3 A
(87.2%)
72.0 A
(120%)
96.0 A
(160%)
Overload detection time [s]
Motor current
(Percentage of Electronic Thermal Level)
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...