Handling - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Handling

Observe the following precautions when wiring or performing maintenance for an Inverter.
Wiring Check
The Inverter will be internally damaged if the power supply voltage is applied to output terminal U, V, or W.
Check wiring for any mistakes before supplying power. Check all wiring and control sequences carefully.
Magnetic Contactor Installation
Do not start and stop operation frequently with a magnetic contactor installed on the power supply line. Doing
so can cause the Inverter to malfunction. Do not turn the inverter power supply ON and OFF more than one
time every 30 minutes.
Maintenance and Inspections
After turning OFF the main circuit power supply, always confirm that the CHARGE indicator has gone out
before performing maintenance or inspections. The voltage remaining in the capacitor may cause electric
shock.
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