Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Analog Voltage and Pulse Train Reference - Manual (Page 184)

5 Operation
5.9.3 Battery Replacement
5-70
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).
• 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.
• 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 cannot be OFF while the servomotor power is ON.
OFF ON (high level)
1.3 s min.
OFF ON
15 ms min.
SEN signal
Parameter Meaning
When
Enabled
Classification
Pn008
n. 0 [Fac-
tory setting]
Outputs the alarm A.830 when the battery voltage
drops.
After restart Setup
n. 1
Outputs the warning A.930 when the battery voltage
drops.
4 s 5 s max.
Warning A.930
(Pn008.0 = 1)
Alarm A.830
(Pn008.0 = 0)
ALM
OFF
Alarm status Normal status
ON
Battery
voltage being
monitored
Battery voltage
being monitored
Control
power
Rotation