Replacing The Battery - YASKAWA SGD7S Product Manual

12.1.3

Replacing the Battery

If the battery voltage drops to approximately 2.7 V or less, an A.830 alarm (Encoder Battery
Alarm) or an A.930 warning (Absolute Encoder Battery Error) 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.
Battery Replacement Procedure on page 12-3
Battery Alarm/Warning Selection
Whether to display an alarm or a warning is determined by the setting of Pn008 = n.X
(Low Battery Voltage Alarm/Warning Selection).
Parameter
n.0
(default setting)
Pn008
n.1
• Pn008 = n.0
• 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.
• 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.
When displaying an alarm is specified:
Pn008 = n.
When displaying a warning is specified:
Pn008 = n.
Battery Replacement Procedure
 When Installing a Battery on the Host Controller
1.
Turn ON only the control power supply to the SERVOPACK.
2.
Remove the old battery and mount a new battery.
3.
Turn OFF the control power supply to the SERVOPACK to clear the A.830 alarm
(Encoder Battery Alarm).
4.
Turn ON the control power supply to the SERVOPACK again.
5.
Make sure that the alarm has been cleared and that the SERVOPACK operates normally.
Output alarm (A.830) for low battery voltage.
Output warning (A.930) for low battery voltage.
OFF
Control power supply
ALM
Alarm
0
1
12.1 Inspections and Part Replacement
Meaning
ON
Normal status
5 s max. 4 s
Battery voltage
monitored
Battery voltage monitored

12.1.3 Replacing the Battery

When Enabled Classification
After restart Setup
12
12-3