YASKAWA A1000 HHP Programming Manual page 212

2.5 Alarm Detection
Drive internal circuitry is worn.
The drive input power transformer is too
small and voltage drops when the power is
switched on.
Air inside the drive is too hot.
The CHARGE light is broken or
disconnected.
Digital Operator Display
Cause
Hardware is damaged.
212
• Check the maintenance time for the capacitors (U4-05).
• Replace either the control board or the entire drive if U4-05 exceeds 90%. For instructions on replacing
the control board, contact Yaskawa or your nearest sales representative.
• Check for an alarm when the magnetic contactor, line breaker, and leakage breaker are closed.
• Check the capacity of the drive input power transformer.
Check the temperature inside the drive.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Output Voltage Detection Fault
voF
There is a problem with the output voltage.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Minor Fault Name
Possible Solutions