Yaskawa Matrix Converter - Manual (Page 379)

MxC Application Precautions
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‹ Handling
Observe the following precautions when wiring or performing maintenance on the MxC.
„ Wiring Check
Internal damage will occur if the power supply voltage is applied to output terminal U, V, or W or to optional
connection terminal r2, s2, t2, p1, and n1. Check wiring for any mistakes before supplying power. Be sure to
check all wiring and sequences carefully.
„ Magnetic Contactor Installation
Do not start and stop the motor frequently when using a magnetic contactor installed on the power supply line.
Doing so can cause the MxC to malfunction. The MxC should not be switched on and off more than once
every 30 minutes when using a magnetic contactor.
„ Maintenance and Inspections
After shutting off the main circuit power supply, always confirm that the CHARGE light has gone out before
performing any maintenance or inspecting the MxC. Remaining voltage in the capacitor may cause electric
shock.