Yaskawa MP940 Hardware Manual - Manual (Page 56)

MotionSuite™ MP940 Machine Controller Hardware Manual Section 11: Maintenance
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Section 11: Maintenance
Battery Life
The battery can preserve the program and data for a period of one year with power off.
The battery has a life expectancy of five years under normal operating conditions.
However, these values change depending on external conditions such as temperature.
Replace the battery within two weeks, when the “BAT” display LED is on. If the
battery is replaced beyond two weeks, programs and data stored in the MP940
memory will be lost.
Battery Replacement
Battery replacement is as follows.
„ Preparation
1. Save memory contents
Before replacing the battery, save programs and data to a floppy disk or hard
disk. The disk can be used if programs and data are accidentally erased due to
a mistake when replacing the battery.
2. Replacement battery
Use replacement battery type BA000518. This battery is not standard, and
must therefore be purchased from Yaskawa. The replacement battery appears
as in the diagram below.
Figure 11.1: BA000518 Battery with Cable