YASKAWA DX200 Maintenance Manual page 1152

Alarm Name
Alarm Sub
Number
Code
4970 CONVTR POWER
ERR
(PHASE SEQ.)(SV)
4971 CONVTR POWER
ERR (PEAK) (SV)
Meaning Cause
EAXA21 board failure
other
Sub Code: Signifies the axis Primary power supply
in which the alarm occurred failure
Connection failure
Module failure (converter)
EAXA21 board failure
other
Primary power supply
failure
Remedy
(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.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
Confirm that appropriate primary voltage is applied to the breaker.
Prescribed voltage: 200V (+10% to 15%)
(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
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the converter.
(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.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
Confirm that appropriate primary voltage is applied to the breaker.
Prescribed voltage: 200V (+10% to 15%)