YASKAWA Sigma-7 SGD7S Series

Part Standard Replacement
Period
Remarks
Relays 100,000 power ON opera-
tions
Power ON frequency: Once
an hour
Battery 3 years without power sup-
plied
Surrounding temperature
without power supplied:
20°C
When any standard replacement period is close to expiring, contact your YASKAWA rep-
resentative. After an examination of the part in question, we will determine whether the
part should be replaced.
The parameters of any SERVOPACKs that are sent to YASKAWA for part
replacement are reset to the factory settings before they are returned to
you. Always keep a record of the parameter settings. And, always confirm
that the parameters are properly set before starting operation.
16.2.4 Replacing the Battery
If the battery voltage drops to approximately 2.7 V or less, an A.830 alarm (Encoder Bat-
tery Alarm) or an A.930 warning (Encoder Battery Warning) will be displayed.
If this alarm or warning is displayed, the battery must be replaced.
Refer to the following section for the battery replacement procedure.
Ä Chap. 16.2.4 ‘Replacing the Battery’ page 580
Whether to display an alarm or a warning is determined by the setting of Pn008 =
n.X (Low Battery Voltage Alarm/Warning Selection).
Parameter Meaning When Enabled Classification
Pn008
n.0
(default
setting)
Output alarm (A.830) for
low battery voltage.
After restart Setup
n.1
Output warning (A.930)
for low battery voltage.
n Pn008 = n.0
n The ALM (Servo Alarm) signal is output for up to five seconds when the control power
supply is turned ON, and then the battery voltage is monitored for four seconds.
No alarm will be displayed even if the battery voltage drops below the specified value
after these four seconds.
n Pn008 = n.1
The ALM (Servo Alarm) signal is output for up to five seconds when the control power
supply is turned ON, and then the battery voltage is monitored continuously.
Battery Alarm/Warning
Selection
Sigma-7 Series SERVOPACKs
Maintenance
Inspections and Part Replacement > Replacing the Battery
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