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9. Maintenance
9.1. Precautions
l Backup Motor and Driver Unit
l Parameter and program data backup
l How to replace the Driver Unit.
l For custom made Systems, please refer to the respective specification documents for the
interchangeability.
l When replacing the Driver Unit, refer to "Appendix 4: How to Replace ESB Driver Unit."
l ESB Driver Unit has EEPROM and does not need a battery for memory backup.
(Life of the EEPROM: approximately 500 000 times of overwriting.)
à We recommend keeping the backup of Motor and Driver Unit for a quick recovery in
case of unexpected failure of the System.
à In case of an unexpected failure of the Driver Unit, all parameters and programs should
be recorded.
à For your convenience, we have provided the lists of parameter and program on the last
pages of this manual.
"Appendix 7: ESBB3 Driver Unit Parameter/Program Setting List"
"Appendix 8: ESB23 Driver Unit Parameter/Program Setting List"
"Appendix 9: ESBB5 Driver Unit Parameter /Program Setting List"
"Appendix 10: ESB25 Driver Unit Parameter/Program Setting List"
à The Driver Units listed below are interchangeable with each other. It may be replaced
simply by inputting same parameter settings of the old Driver Unit.
Following shows reference numbers of ESB type Driver Units.
Driver Unit reference number
M-ESB-YSB****AB3**, M-ESB-YSB****CB3**
M-ESB-YSB****A23**, M-ESB-YSB****C23**
M-ESB-YSB****AB5**, M-ESB-YSB****CB5**
M-ESB-YSB****A25**, M-ESB-YSB****C25**
à If you require frequent parameter changes in positioning with RS-232C
communication commands, etc, set the WM1 parameter to avoid unnecessary backup.
à Commands AD, AR, ID and IR do not affect the life of the EEPROM as they won't be
backed up to the memory. However, they will be backed up if they are programmed to
a channel.
à If the EEPROM reaches its life, the alarm of "E2>EEPROM Error" will occur.
— 9-1 —
9.1. Precautions
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Troubleshooting
