8 Troubleshooting
32
YASKAWA ELECTRIC
TOEP C710656 09D YASKAWA Power Regenerative Unit - R1000 Quick Start Guide
Internal Circulation
Fan Fault
An internal circulation fan is faulty
(2A0105, 4A0210, 4A0300).
• Cycle the power supply and see if the fault occurs again.
• Check the operation of the internal circulation fans.
• Check U4-03 (Cooling Fan Operation Time) and U4-04 (Cooling
Fan Maintenance Display).
If the life of the internal circulation fans has expired or if a fan is faulty,
perform fan replacement according to instructions in this manual.
An internal circulation fan or MC power
supply is faulty (2A0105, 4A0210,
4A0300).
Cycle the power supply and see if the fault occurs again.
If the fault occurs repeatedly, replace the board or the regenerative
unit. For information on board replacement, consult with your
Yaskawa representative or the nearest Yaskawa sales office.
Power Supply
Frequency Fault
A momentary power loss occurred.
Investigate and correct the cause and reset the fault.
An input power supply wiring terminal is
loose.
The fluctuation in the voltage of the input
power supply is too large.
The AC power supply fuse burned out.
• A transistor inside the regenerative unit was destroyed.
• The input wiring or drive output has ground faulted or short
circuited.
Contact your Yaskawa representative or the nearest Yaskawa sales
office.
The phase rotation direction has changed
in the input power supply.
Correct the wiring.
The detected power supply frequency
exceeded the allowable value.
Improve the power supply.
AC Fuse Blowout
–
The power supply fuse burned out.
• A transistor inside the regenerative unit was destroyed.
• The input wiring or drive output has ground faulted or short
circuited.
Contact your Yaskawa representative or the nearest Yaskawa sales
office.
DC Fuse Blowout
–
The main transistor failed.
Replace the regenerative unit.
The DC circuit fuse burned out.
The drive failed.
Replace the drive.
For information on drive replacement, consult with your Yaskawa
representative or the nearest Yaskawa sales office.
Current Alarm
– Load is too heavy.
Reduce the load for applications with repetitive operations (i.e., stops
and starts), or replace the regenerative unit.
Digital Operator AL FL
Cause
Corrective Action
Fan
Fdv
FUA
FUd
HCA
D1000R1000_QSG_E_conditional.book 32 ページ ２０１８年２月２６日 月曜日 午後２時３８分
