Battery Replacement - YASKAWA Sigma-V Series User Manual

For the details of the absolute data reception sequence, refer to 5.9.5 Absolute Data Reception Sequence.

5.9.3 Battery Replacement

If the battery voltage drops to approximately 2.7 V or less, an absolute encoder battery error alarm (A.830) or
an absolute encoder battery error warning (A.930) will be displayed.
If this alarm or warning is displayed, replace the batteries using the following procedure.
Use Pn008.0 to set either an alarm (A.830) or a warning (A.930).
Parameter
n.
[Factory setting]
Pn008
n.
• If Pn008.0 is set to 0, alarm detection will be enabled for 4 seconds after the ALM signal outputs max. 5 sec-
onds when the control power is turned ON.
No battery-related alarm will be displayed even if the battery voltage drops below the specified value after
these 4 seconds.
• If Pn008.0 is set to 1, alarm detection will be always enabled after the ALM signal outputs max. 5 seconds
when the control power supply is turned ON.
Control
power
ALM
Alarm A.830
(Pn008.0 = 0)
Warning A.930
(Pn008.0 = 1)
• Maintain the high level for at least 1.3 seconds when the SEN signal is turned OFF
and then ON, as shown in the figure below.
SEN signal
OFF ON (high level)
1.3 s min.
• SEN Signal cannot be OFF while the servomotor power is ON.
0 Outputs the alarm A.830 when the battery voltage
drops.
Outputs the warning A.930 when the battery voltage
1
drops.
ON
OFF
Alarm status Normal status
5 s max.
Battery
voltage being
monitored
being monitored
OFF ON
15 ms min.
Meaning
Rotation
4 s
Battery voltage
5.9 Absolute Encoders
When
Classification
Enabled
After restart Setup
5
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