Alarm List
Alarm Number (4000 to 4999)
Alarm List-931
EAXA21 board failure (1)Reset the alarm.(In case of major alarm, turn the power OFF then
back ON.)
(2)If the alarm occurs again, replace the EAXA21 and EAXB21 boards.
Save the CMOS.BIN before replacing the board to be safe.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4970 CONVTR POWER
ERR
(PHASE SEQ.)(SV)
Sub Code: Signifies the axis
in which the alarm occurred
Primary power supply
failure
Confirm that appropriate primary voltage is applied to the breaker.
Prescribed voltage: 200V (+10% to 15%)
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following cables and connectors.
∙ EAXA21-CN507,510
∙ EAXB21-CN531,532,533
∙ Converter-CN551,553
∙ EX1SV(External axis servo pack)-CN591,592
Module failure (converter) (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the converter.
EAXA21 board failure (1)Reset the alarm.(In case of major alarm, turn the power OFF then
back ON.)
(2)If the alarm occurs again, replace the EAXA21 and EAXB21 boards.
Save the CMOS.BIN before replacing the board to be safe.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4971 CONVTR POWER
ERR (PEAK) (SV)
Primary power supply
failure
Confirm that appropriate primary voltage is applied to the breaker.
Prescribed voltage: 200V (+10% to 15%)
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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