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6 Vector Control and Applied Functions
6 - 54
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
Precautions for Correct Use
• Check the maximum allowable current (limiting current beyond which demagnetization
occurs) for your PM motor.
The inverter could output approximately 300% of the rated output current of the inverter.
Select a PM motor as follows to prevent demagnetization.
When comparing each motor specification, note whether it is an effective value or a peak
value. The inverter’s rated current is an effective value.
• In the PM motor mode, some of the inverter functions are unavailable. Unavailable parame-
ters are not displayed on the Digital Operator.
Refer to
6-8-2 Functional Limitations in PM Motor Mode
on page 6-55.
• The PM motor control mode is applied to one single motor. It is not possible to drive more
than one PM motor with a single inverter.
• With an extremely large load, this control may not keep the PM motor in a synchronized
state.
As a guide, the motor-shaft conversion of the moment of load inertia shall be not more than
30 times as great as the moment of inertia of the PM motor.
• At frequency matching restart, the control mode may detect an overvoltage at high rotation
speeds of 120 Hz or higher, or at low rotation speeds under a low inductive voltage.
If an overcurrent is detected, instead of using frequency matching restart, use an external
brake or DC injection braking to stop the motor before restarting.
Maximum current of PM motor > Approx. 300% of rated output current of inverter
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 ...