Operation
Chapter 5
• The reference frequency is too low.
When the reference frequency is less than 1.5 Hz, the Inverter cannot operate.
Change the reference frequency to 1.5 Hz or more.
• The sequence input method is wrong.
If the 3-wire sequence input mode is selected as an external terminal function instead
of the actual 2-wire sequence input mode, the motor will not run, in which case change
the constant or change to the sequence input that matches the constant setting.
H The Motor Does Not Operate when an External Run Signal is
Input.
• Operation mode is selected incorrectly.
If “0,” “2,” or “4” is set in n02, the motor does not operate when a run signal is input.
Always set “1,” “3,” or “5” in n02.
• The reference frequency is too low.
When the reference frequency is less than 1.5 Hz, the Inverter does not operate.
Change the reference frequency to 1.5 Hz or more.
H The Motor Stops during Acceleration or when a Load is
Connected.
• Load is too high.
The 3G3EV has a stall prevention function and full automatic torque boost function.
However, if acceleration or load is too high, the motor response limit will be exceeded.
To prevent this, increase acceleration time or reduce load. Motor capacity should be
also increased.
5-2-3 Motor Rotates in the Wrong Direction
• The motor output line is connected incorrectly.
If terminals U, V, and W on the Inverter are correctly connected to terminals U, V, and W
on the motor, the motor rotates in the forward direction when a forward rotation com-
mand is input. Since the forward direction of rotation depends on the motor manufac-
turer and model, check the motor specifications.
5-9
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