YASKAWA E-V-MD Series - Battery Replacement

5 Wiring and Connections
5.5.4 Battery Replacement
5-22
5.5.4 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
The battery voltage is monitored for approx. 4 seconds after the control power supply has been ON for
approx. 5 seconds.
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
The battery voltage is monitored for continuously after the control power supply has been ON for approx. 5
seconds.
• If you use the encoder as an absolute encoder, use one of the encoder cables with a
battery case specified by Yaskawa. Refer to 2.4.2 Servomotor/Encoder Relay Cables
for the model numbers of the cables.
Parameter Meaning
When Enabled
Classification
Pn008
n.0
[Factory
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)
OFF
ON
Battery
voltage being
monitored
Battery voltage
being monitored
Control power