Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 119)

4 Operation
4.5.3 Battery Replacement
4-36
4.5.3 Battery Replacement
If the battery voltage drops to approximately 2.7 V, an absolute encoder battery error (A.830) or absolute
encoder battery warning (A.930) will be displayed.
If an alarm or warning is displayed, replace the battery using the following procedure.
Use Pn008 to set either an alarm (A.830) or a warning (A.930).
• If Pn008.0 is set to 0, an ALM signal is sent for a maximum of 5 seconds, and then the battery voltage is
checked for 4 seconds when the power is turned ON.
Note: After those initial 4 second, no alarm will be displayed even if the battery voltage drops to approximately 2.7 V.
• If Pn008.0 is set to 1, the battery voltage will constantly be monitored.
(1) Battery Replacement Procedure
Using an Encoder Cable with a Battery Case
1. Turn ON only the SERVOPACK control power supply.
2. Open the battery case cover. (Example: cable with battery and connectors at both ends)
Parameter Meaning When Enabled Classification
Pn008
n. 0
Outputs the alarm A.830 when the battery voltage
drops. [Factory setting]
After restart Setup
n. 1
Outputs the warning A.930 when the battery voltage
drops.
4 s Max 5 s
Warning A.930
(Pn008.0 = 1)
Alarm A.830
(Pn008.0 = 0)
ALM
OFF (close)
Alarm status Normal status
ON (open)
Battery
voltage being
monitored
Battery voltage
being monitored
Control
power
Open the cover.