Yaskawa E7, G7, GA800 & GA500 Drive
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Mar 19, 2024 5:13 am
Cause : Input Phase Loss comes when rive input power supply has an open phase or has a large imbalance of input voltage
1. There is phase loss in the drive input power
• Check for wiring errors in the main circuit drive input power.
• Correct the wiring.
2. There is loose wiring in the drive input power terminals
• Ensure the terminals are tightened properly.
• Apply the tightening torque as specified in this manual.
3. There is excessive fluctuation in the drive input power voltage
• Check the voltage from the drive input power.
• Review the possible solutions for stabilizing the drive input power.
4. The main circuit capacitors are worn
• Check the maintenance time for the capacitors.
5. Check input voltage.
