Yaskawa R1000 Series Power Regenerative Unit User Manual
Page 101
5.3 Fault Detection
YASKAWA ELECTRIC TOEP C710656 08B YASKAWA Power Regenerative Unit - R1000 Instruction Manual
101
Tr
ou
blesh
oot
ing
5
Digital Operator
Display
Fault Name
Details
Uv3
Undervoltage 3
(Soft-Charge Bypass
Circuit Fault)
The soft-charge bypass circuit failed.
Cause
Possible Solution
The relay or contactor on the soft-charge
bypass circuit is damaged.
• Cycle power to the regenerative unit and see if the fault reoccurs.
• If the problem continues, replace either the control board or the entire regenerative unit. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
• Check monitor U4-06 for the performance life of the soft-charge bypass.
• Replace either the control board or the entire regenerative unit if U4-06 exceeds 90%. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
<1> If the fault occurs when starting the regenerative unit, CPF00 or CPF20 is displayed. If it occurs during operation, CPF01 or CPF21 is
displayed.
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