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The operation method selection is wrong.
If constant b1-02 (reference selection) is set to 0 (Digital Operator), the motor will not operate when an exter-
nal operation signal is input. Set b1-02 to 3 (PLC) and try again.
Similarly, the motor will also not operate if the LOCAL/REMOTE Key has been pressed to switch to Digital
Operator operation. In that case press the LOCAL/REMOTE Key again to return to the original setting.
The LOCAL/REMOTE Key is enabled by setting o2-01 to 1 and disabled by setting o2-01 to 0. It is enabled
when the drive mode is entered.
INFO
The frequency reference is too low.
If the frequency reference is set below the frequency set in E1-09 (Minimum Output Frequency), the Matrix
converter will not operate. Raise the frequency reference to at least the minimum output frequency.
There is a multi-function analog input setting error.
If multi-function analog inputs H3-05, H3-09, and H3-13 are set to 1 (frequency gain), and if no voltage (cur-
rent) is input, then the frequency reference will be zero. Check to be sure that the set value and analog input
value are correct.
The motor stops during acceleration or when a load is connected.
The load may be too heavy. The Matrix converter has a stall prevention function, but the motor responsiveness
limit may be exceeded if acceleration is too rapid or if the load is too heavy. Lengthen the acceleration time or
reduce the load. Also consider increasing the motor capacity.
The motor does not accelerate.
If the torque limit settings (L7-01 to L7-04) are too small, the motor may not be able to accelerate. Check the
settings and input values.
The motor only rotates in one direction.
"Reverse run prohibited" is selected. If b1-04 (Prohibition of Reverse Operation) is set to 1 (reverse run pro-
hibited), the Matrix converter will not receive Reverse Run Commands. To use both forward and reverse oper-
ation, set b1-04 to 0.
If the Direction of the Motor Rotation is Reversed
If the motor operates in the wrong direction, the motor output wiring is faulty. When the Matrix converter's U,
V, and W are properly connected to the motor's U, V, and W the motor operates in a forward direction when a
Forward Run Command is executed. The forward direction depends on the manufacturer and the motor type,
so be sure to check the specifications.
The direction of rotation can be reversed by switching two wires among U, V, and W.
Troubleshooting
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Table of Contents
Troubleshooting
