Drive internal circuitry is worn.
• Check the maintenance time for the capacitors (U4-05).
•
Replace the drive if U4-05 exceeds 90%.
YES
The drive input power transformer is not
large enough and voltage drops when the
power is switched on.
• Check for a tripped alarm when the magnetic contactor, line breaker and leakage breaker
are turned on.
• Check the capacity of the drive input power transformer.
YES
Air inside the drive is too hot. • Check the temperature inside the drive. YES
The CHARGE indicator light is broken or
disconnected.
• Replace the drive. YES
6.5 Alarm Detection
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
143
6
Troubleshooting
http://nicontrols.com
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