Yaskawa Varispeed-656 DC5 Converter - Manual (Page 22)

VS-656DC5 User’s Manual
20 - 20
Alarm Display Details
Alarms do not operate the error contact outputs, and will automatically return to the original
run state when their cause has been removed. Alarms flash when displayed.
Alarm
Display
Alarm Display
Content
Description Countermeasures
UV Undervoltage
Detected The main DC voltage was less than L2-05
(undervoltage detection level) while stopped
or during momentary power loss. –
OV OV While
Stopped The main circuit DC voltage has exceeded the
OV level. Excessive regen load
OL Converter
Input Overload Input load capacity level has been exceeded. Reduce load
OH Cooling Fin
Overheat Cooling fin temperature has exceeded L8-02 • Check fin, ambient temper-
ature
• Check filter, fin
EF3 Control Circuit
Terminal 3
External Error An external error (minor fault selection) was
input from control circuit terminal 3. Check input terminal.
EF4 Control Circuit
Terminal 4
External Error An external error (minor fault selection) was
input from control circuit terminal 4.
EF5 Control Circuit
Terminal 5
External Error An external error (minor fault selection) was
input from control circuit terminal 5.
EF6 Control Circuit
Terminal 6
External Error An external error (minor fault selection) was
input from control circuit terminal 6.
EF7 Control Circuit
Terminal 7
External Error An external error (minor fault selection) was
input from control circuit terminal 7.
EF8 Control Circuit
Terminal 8
External Error An external error (minor fault selection) was
input from control circuit terminal 8.